Front Cover
 Table of Contents
 Group picture of the organizational...
 Philippine Phytopathology...
 Gerardo o. Ocfemia, 1891-1959
 Constitution of the Philippine:...
 Abstracts of papers accepted for...
 Charter members
 Back Cover

Title: Journal of Tropical Plant Pathology
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00090520/00008
 Material Information
Title: Journal of Tropical Plant Pathology
Series Title: Journal of Tropical Plant Pathology
Physical Description: Serial
Language: English
Publisher: Philippine Phytopathological Society
Place of Publication: Philippines
Publication Date: 1965
 Record Information
Bibliographic ID: UF00090520
Volume ID: VID00008
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 1624346
electronic_oclc - 54382605
issn - 0115-0804

Table of Contents
    Front Cover
        Front Cover 1
        Front Cover 2
    Table of Contents
        Page 1
    Group picture of the organizational meeting, May 11, 1963, College, Laguna
        Page 2
    Philippine Phytopathology Journal
        Page 3
        Page 4
    Gerardo o. Ocfemia, 1891-1959
        Page 5
    Constitution of the Philippine: Phytopathological society
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
        Page 13
        Page 14
    Abstracts of papers accepted for presentation at the first annual meeting of the Philippine phytopathological society, Baguio City, May 7-8, 1964
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20
        Page 21
    Charter members
        Page 22
        Page 23
        Page 24
        Page 25
        Page 26
        Page 27
        Page 28
    Back Cover
        Page 29
        Page 30
Full Text

Vol.~~- I aury-~





Group Picture of the Organizational
Meeting, May 11, 1963, College,
Laguna ............ ......................... ...... 2

Philippine Phytopathology Journal .......................... 3
E. F. Roldan

Gerardo 0. Ocfemia, 1891-1959 ............................. 5
Victoria Mendiola-Ela

Constitution of the Philippine
Phytopathological Society .............................. 6

Abstracts of Papers Accepted for Presentation
at the First Annual Meeting of the
Philippine Phytopathological Society,
Baguio City, May 7, 8, 1964 ........................... 15

Charter Members .......... ............ ............. 22




a\t011 j* fiZe"a

January/ (5.

Vol. I


Founded October 10, 1962

The P. P. S. Council

President, BERNARO S. CASTILLO, Bureau of Plant Industry, Region No. 1,
Dagupan City, Pangasinan
Vice-President, OFELIO R. EXCONDE, University of the Philippines, College,
Secretary, MA. SALOME E. DEL ROSARIO, University of the Philippines, Col-
lege, Laguna
Treasurer, PRISCILLA T. CHINTE, International Rice Research Institute, Los
Bafios, Laguna
Retiring President, MARIO O. SAN JUAN, University of the Philippines, College,


FAUSTINO T. ORILLO, University of the Philippines, College, Laguna (Luzon)
LEODEGARIO C. OREJUDOS, Samar Institute of Technology, Catarman, Sa-
mar (Visavas)
ALFREDO L. ELOJA, Bureau of Plant Industry, Davao Experiment Station,
Davao City (Mindanao)


Official Organ of the Philippine Phytopathological Society

EMILIANO F. ROLDAN, Editor-in-Chief, Araneta University, Victoneta Park, Rizal
MARTIN S. CELINO, Philippine Coconut Administration, Diliman, Quezon City
JOSE R. DEANON JR., University of the Philippines. College, Laguna
AUREO L. MARTINEZ, Bureau of Plant Industry, Lipa City
ALFREDO V. PALO, Bureau of Plant Industry, Economic Garden, Los Bafios, Laguna
GAUDENCIO M. REYES, Central Azucarera de Tarlac, San Miguel, Tarlac


RENATO I. CAPINPIN, Shell Company. P.O. Box 441, Manila
Subscriptions: The Philippine Phytopathology is published semi-annually dur-
ing the months of January and June by the PPS, College, Laguna, Philippines.
The subscription rates are P2.00 per copy for domestic and $1.00 (U.S. currency)
elsewhere. All communications should be addressed to the Business Manager,
Renato 1. Capinpin, Shell Company, P.O. Box 441, Manila.
Authors ofthe Philippine Phytopathology are solely responsible for the opic
lions expressed therein.


Official Organ of


Group Picture of the Organizational
Meeting, May 11, 1963, College,
Laguna ........................ .................... 2

Philippine Phytopathology Journal .......................... 3
E. F. Roldan

Gerardo O. Ocfemia, 1891 1959 ............................ 5
V. M. Ela

Constitution of the Philippine
Phytopathological Society .............................. 6

Abstracts of Papers Accepted for
Presentation at the First Annual
Meeting of the Philippine
Phytopathological Society, Baguio City,
May 7, 8, 1964 ........................ ........... 15

Charter Members ........... ........................... 22


Front Row: Eloga, A. L., Raymundo, S. A., Benigno, D. A., Manzanilla, A. S.,
Alaban, C. A., Lapis, D. B., Luistro, A. O., Baluyot, S. C., Fuentes,
F. D., Martinez, A. L., Bombay, B. B.,
Second Row: Napi, G. N., Non-member, Magnaye, L. V. (Mrs.), Agregado, B. A.,
Divinagracia, F. N., Ela, V. M. (Mrs.), Roldan, E. F., Rosario, M. S.
del, Chinte, P. T., Orillo, F. T., Castillo, B. S., Reyes, J. C., San Juan,
M. O., Lopez, M. E., Exconde, O. R., Respicio, C. C., Calo, R. P.,
Third Row: Divinagracia, G. G., Reyes, J. C., Gandia, I. M., Nuque, F. L., Santa-
Maria, P. A., Quifiones, S. S., Reyes, T. T., Roperos, N. I., Alabanza,
A. A., Protacio, D. B., Juliano, J. P., Tidon, F. R. Silva, C. V.,
Palo, A. V., Valdez, R. B., Nora, D. M.,
Fourth Row: Pacumbaba, R. P., Quimio, A. J., Ventura, P. F., Quebral, F. C.,
Escober, J. T., Cortado, R. V., Angeles, O. R., Bergonia, H. T., Por-
desimo, A. N., Orolfo, M. P., Alicbusan, R. V., Gavara, M. R., Boncato,
A. A., Baniqued, C. A., Acedo, J. R.


The Philippine Phytopathology Journal was adopted as the of-
ficial organ of the Philippine Phytopathological Society after it was
formally organized on May 11, 1963. The publication of a journal is
a significant step toward the fulfillment of a long felt need to ex-
press the society's views on varied issues concerning plant disease
problems. The journal will play an important role in the promotion
and development of improved technological schemes in the different
areas of research on plant diseases and allied fields. The benefits
of research will not only be limited to the Philippines but will be
far reaching. Through the journal, the findings will be exchanged
with those of other nations and various international organizations
engaged in plant pathological research.
Currently, one of our foremost objectives is to search constant-
ly for and formulate appropriate measures with which to cope and
effectively control or at least reduce to the minimum the prevalence,.
damage, and destruction of plant diseases to crops. There have been
serious threats of plant diseases resulting in underproduction of
our prime agricultural crops. Some of them are the abaca mosaic,,
which at the height of its epidemic, almost wiped out the Philip-
pine monopoly of abaca industry; cadang-cadang of coconut which
is annually causing million-peso losses, tristeza which is threaten-
ing to annihilate the developing citrus industry; and the rice blast
which in some districts has been reported to be exceptionally severe
causing total crop failure. These diseases and many others are for
the moment the salient problems and challenges that plant patho-
logists have to face and solve. With untiring efforts and dedication,
however, they shall constantly strive and devote their technical re-
sourcefulness to discover the solution to these problems and thus
to contribute to and share in the upgrading of agricultural and farm


q %7


Dr. Gerardo 0. Ocfemla (t)


By Victoria Mendiola-Ela

There is probably no name more closely associated with Plant
Pathology in the Philippines than that of Dr. Ocfemia whose whole
life was devoted fully to this field of science. Born 74 years ago
on April 23, at Guinobatan, Albay, his career with the UPCA cov-
ered a rich and fruitful period of 42 years for which he deserved
to be called "Dean of Filipino Plant Pathologists".
Immediately after obtaining his Bachelor of Agriculture from
the college in 1915, he served as assistant instructor in the Depart-
ments of Agronomy and Plant Pathology until 1920. As a recipient
of the University Fellowship for advance study, he took his M.S.
in 1920 and his Ph.D. in 1923 at the University of Wisconsin.
Upon his return to the Philippines he went up the professorial
ranks from assistant professor to full professor. He was head of
the Department of Plant Pathology for 22 years. Upon retirement
on April 10, 1957, he became the head of the Department of Plant
Pathology at Araneta University until death claimed him on Nov-
ember 17, 1959.
His outstanding contributions lie in the field of virus diseases
of plants, specifically the bunchy-top of abaca and Fiji disease of
sugar cane. He published various scientific and popular papers.
He also served as managing editor of the Philippine Agriculturist
from 1938 to 1941 and 1947 to 1955.
He was a member of numerous local and foreign scientific and
honor societies among which are the Society for the Advancement
of Research, National Research Council of the Philippines, Amer-
ican Association for the Advancement of Science, the American
Phytopathological Society, Botanical Society of America, New York
Academy of Science, Sigma Xi, Gamma Sigma Delta, and Phi Kap-
pa Phi.
In recognition of his brilliant records of accomplishments in
Research, Teaching and Public Service, he was one of the 10 scien-
tists awarded the distinguished service medal and diploma of honor
in the 1955 Science Celebration in the Philippines.
Dr. Ocfemia, in spite of the demands of science was able to
maintain a happy balance between his professional and family life.
He was married to the former Epifania San Valentin by whom
he had five children.


The name of this Society shall be PHILIPPINE PHYTOPA-
THOLOGICAL SOCIETY. Its objectives are to promote: (1) the
increase and diffusion of all aspects of knowledge relating to plant
diseases and their control, (2) effective working relations between
persons professionally engaged in this field of study, and (3) co-
ordination of various interests and services pertinent thereto.

Section 1. The Society shall consist of Charter members, Annual
members, Student members, Patrons and Sustaining Associates.
Section 2. -
a) Charter Members. The Charter members are those who ac-
cepted the invitation of the Organization Committee of October 10,
1962, to form the Society.
b) Annual Members. Any person interested and/or engaged in
the study of and control of plant diseases shall be eligible for mem-
bership. Application for membership must be endorsed by at least
one member of the Society and forwarded to the Treasurer with
such dues as prescribed in the Standing Rules. Applicants may be
elected at any regular meeting of the Society.
c) Student Members. Any person interested in the study and
control of plant diseases who is a major student in Plant Pathology
enrolled in any credited University or College is eligible for mem-
bership. Applications must be endorsed by a member of the Society,
and the student and employment status must be certified by the
major professor or appropriate department head of the educational
institution. His/Her membership as student member expires upon
graduation. Applicants may be elected at any regular meeting of
the Society.
d) Patron. Any person making payment to the Society of such
amounts as may be prescribed in the Standing Rules shall be desig-
nated as a Patron upon election to membership, shall enjoy all the
privileges of an Annual Member.


e) Sustaining Associates. Any firm making an annual contri-
bution to the Society of such amount as prescribed in the Standing
Rules shall be designated a Sustaining Associate and shall receive
the official journal without charge.
Section 3. Election of members. Applicants whose names are
endorsed by any member shall be elected members during any re-
gular meeting of the Council of the Society.
Section 4. Privileges. Any member of good standing is entitled
to vote, publish article in the Journal of the Society and receive

Section 1. The officers of the Society shall be a President, a
Vice-President, a Secretary and a Treasurer.
Section 2. The duties of the officers shall be those customarily
pertaining to these offices, but action of the officers should be
approved by the Society.

Section 1. The government of the Society and its corporate
authority as defined in the Society's Articles of Incorporation shall
be vested in a Council which shall consist of the contemporary
officers, the retiring President, the President-elect, and the Editor-
in-Chief and the Business Manager of the Journal, a Councilor from
each unit of the Society that is organized as a Division, and two
Section 2. The President shall call meetings of the Council at
his discretion or upon the written request of three of its members.
He or in his absence the Vice-President, shall preside at meetings
of the Council. In the absence of both the President and Vice-Pres-
ident, the President-elect shall preside at meetings of the Council.
Section 3. The presence of a majority of the Council shall con-
stitute a quorum for the transaction of business.
Section 4. All actions of the Council or officers must be autho-
rized or approved by the Society at the annual meeting except as
specified in Article VII, Section 3.

Section 1. The President-elect, Vice-President, and Councilors-
at-large shall be elected by ballot. The Secretary shall send a nomi-
nation ballot for those offices to all members of the Society in time


to allow nominations to be returned not less than two months be-
fore the date of the annual meeting. The Council shall designate
the nominees for any office when such nominations are wanting, or
tied. The names of the three persons who receive the highest num-
ber of nominating votes for each office shall be placed on a final
ballot, which shall be sent to each resident member not less than
one month before the annual meeting. If the same person should
receive sufficient ballots to qualify for nomination to more than
one office, his name shall be placed on the final ballot as a candidate
for only the office for which he receives the greater number of
ballots, and in case of an equal number of ballots, he shall be en-
tered as a candidate for only the higher office as listed in Article
III, Section 1. These ballots shall be returned to the Secretary and
shall be canvassed by the Council. A plurality vote shall elect the
nominees for the above named positions.
Section 2. The Secretary and the Treasurer shall be appointed
by the Council, ordinarily for terms of three years, which shall not
expire concurrently, and the Council may adjust the term or the
date of assuming office to avoid this contingency.
Section 3. The President-elect shall become President and as-
sume the duties of the office upon final adjournment of the annual
meeting next succeeding the annual meeting at which he is elected.
The Vice-President shall assume office upon final adjournment of
the annual meeting at which he is elected. The President and Vice-
President shall not be eligible to immediate reelection to the same
Section 4. The terms of the Councilors-at-large shall be two
years beginning with the final adjournment of the annual meeting
at which they are elected, or until their successors are elected.
Section 5. Division Councilors shall be elected by their cor-
responding Divisions or Regions in such manner and for such terms
as the Divisions or Regions may prescribe.
Section 6. The Council shall fill by appointment any vacancy,
except that of a Division Councilor, occurring within the prescribed
term, such appointment to continue for the unexpired balance.
Section 7. The President shall appoint Alternates-at-large for
the Councilors-at-large who are unable to attend the official Coun-
cil meetings.

Section 1. The official publication of the Society shall be the


Section 2. The Council shall appoint an Editor-in-Chief and a
Business Manager of the Journal for terms of three years not ex-
piring concurrently, and also an Editorial Board as prescribed in the
Standing Rules.
Section 3. The Council may authorize the Editor-in-Chief and
the Business Manager to employ such assistants as may be necessary
for the proper conduct of their work.

Section 1. The Council shall appoint such standing and special
committees as may be appropriate for conducting the business of
the Society.
Section 2.
a) Standing Committees. Committees whose functions include
the general policies and Internal relations of the Society, and its
relations with other organizations, shall be known as Standing Com-
mittees. They shall have a revolving membership and shall submit
an annual report to the Council at the Society's annual meeting.
b) Special Committees. Committees whose function is to deal
with special subject of concern to the Society shall be designated
Special Committees. Each special committee shall be continued for
such period as in the judgment of the Council may be necessary
for the accomplishment of its purpose. Interim reports may be re-
quested and a final report shall be made to the Council at the close
of this period.
c) Temporary Committees. Committees for the accomplishment
of a specific purpose, limited in scope and time, may be appointed
by the President to serve during his term and to make such reports
to the Council as he may direct.
Section 3. In the interim between regular meetings of the So-
ciety the Council may undertake and carry out such actions as: it
deems advisable or necessary, including the reference of particular
questions to the Society members by mail or by notices in the offi-
cial Journal, subject to approval by the Society at its next meeting.

The control of funds of the Society received from dues, sub-
scriptions to the Journal, gifts, bequests and endowments shall be
vested in the Council to administer through the appropriate fiscal
officers and committees. An audit of the receipts and disbursements
shall be made annually by a temporary committee, or at the dis-


creation of the Council by a certified public accountant. The reports
of the Treasurer and the Business Manager, together with that of
the auditing committee, shall be published annually in the Journal.

A general meeting of the Society shall be held each year, unless
prevented by a national emergency, at such place, and time as the
Council may direct. Special or local meetings for the presentation
of scientific papers or demonstrations of experimental results may
be arranged at the discretion of the Council.

Section 1. Branch organizations or units within the Society
known as Regional Divisions, may be established within the geo-
graphical area of the Philippines, provided that a formal application
setting forth the reasons for such establishment is made to, and ap-
proved by, the Society.
Section 2. The organizations and the operations of Regional
Divisions shall be governed by the specifications relative to Divisions
in the Standing Rules.

For the purpose of promoting international collaboration be-
tween professional organizations in the field of plant pathology, the
is authorized to establish affiliated relations with other phytopatho-
logical societies in accordance with the provisions pertaining thereto
in the Standing Rules.

Section 1. This Constitution shall become effective upon its
Section 2. This Constitution may be amended at any annual
meeting of the Society provided that any proposed amendment must
be approved by the Council and published in the official journal, or
otherwise communicated to all resident members, at least one month
before the annual meeting, and that it must receive the affirmative
votes of three-fourths of the members voting at a regularly scheduled
business session.


(a) Dues
Charter Member .................... .... P 10.00
Annual Member ........................ 10.00
Student Member ................ ...... 5.00
Patron ............. ................... 100.00
Sustaining Associates ............... .. . 50.00
Life memberships (payable in 1 year) .... 100.00
(b) All dues shall be payable by December 31, and those who
fail to make payment to the Treasurer by this date shall be consi-
dered in arrears and dropped from membership. Members in arrears
may be reinstated, without the formality of reelection, by payment
of current dues and, in the case of students, certification of student
status as specified in Section 2 (c) of Article II of the Constitution.
(c) The payments received from Patrons and Sustaining Asso-
ciates shall be credited to the current funds of the Society. These
funds shall be transferable to the account of PHILIPPINE PHYTO-
PATHOLOGICAL SOCIETY, or may be used for other purposes
authorized by the Council.

(a) Editorial Board. The editorial policy of the official jour-
nal, PHILIPPINE PHYTOPATHOLOGY, shall be vested in the
Editorial Board consisting of an Editor-in-Chief and ten Editors;
the business control shall be vested in a Business Manager and an
Advertising (or Assistant Business) Manager.
(b) Selection of Board Members. This Board aside from the
Editor-in-Chief and the Business Manager, the manner of whose
appointment is prescribed in Article VI Section 2 of the Constitution
shall be selected from the membership by the Council in consultation
with the Editor-in-Chief, and approved by the Society.
(c) Term of Offce. The term of each member of the Board
shall be three years and the appointments, exclusive of the Editor-
in-Chief, shall be staggered so that five members are appointed each
year. The Council is authorized to make any adjustments in these
terms of office necessary to effect non-concurrence.
(d) Compensation of Advertising Manager. The Advertising
Manager may receive compensation for his services on a commis-
sion basis as determined by the Council.
(e) Subscription and Back Numbers. Subscriptions to the jour-
nal shall be P10.00 per year, domestic and foreign. The price of


single current numbers, within 60 days of publication, shall be P1.00.
The sale and price of back volumes or numbers shall be determined
by the Business Manager with the approval of the Council. Request
to supply lost copies of the journal without charge must be made
within sixty days from date of issue (January 15 and month there-
(f) Income from advertising. Income received from the sale
of advertising space in the journal shall be devoted to the production
of the journal.

The program committee for the annual meeting shall be in
charge of a temporary committee consisting of the President, Vice-
President, Secretary, Editor-in-Chief, and such additional members
as the President may select. This committee shall have full autho-
rity over the scheduling of sessions and demonstrations, and the
allocation of papers.

The Secretary, the Treasurer, the President, or in his place
the Vice-President, are authorized to receive reimbursement from
the Society for travel expenses in connection with their attendance
at the annual meeting. In addition the Editor-in-Chief of the jour-
nal is also authorized to receive reimbursement for travel expenses
to the annual meeting.

An auditing committee shall be appointed by the President each
year which shall, prior to the annual meeting, audit the accounts
of the Treasurer and the Business Manager, and certify their audit
in a written report to the Society at the final business session.
The Council may at its discretion authorize an audit by a certified
public accountant as well as an auditing committee. Such audit
shall be published in the official journal.

(a) Three typewritten copies of each abstract of a paper to be
presented at the annual meeting must be submitted to the Secretary
on or before the closing date specified in the Preliminary Announce-
ment. This date shall be set by the Secretary and when possible
shall be sixty days prior to the annual meeting. The Secretary
shall return to the authors all abstracts received after the closing


(b) At least one author of eaeh paper must be a member of
the Society. An author cannot appear on more than two papers.
(c) The abstracts must be in clear, concise English and con-
tain no tabular data. The text must not exceed 1300 typewriter
spaces in length. Only unpublished information may be included.
Reports of progress, or the disease occurrence, or of routine test,
or of ordinary control measures are not desired unless new and
significant developments are clearly indicated.
(d) The abstracts shall be subject to final acceptance and edit-
ing by a review committee appointed by the Editor-in-Chief. Ac-
cepted abstracts will be published in the journal at the expense of
the Society.
(e) All copies of the abstract must have the following informa-
tion 1) title of paper, 2) name, address, affiliation and member-
ship status of each author, 3) sectional preference, 4) time required
for presentation (maximum 15 minutes), 5) projection equipment
required, including slide size.
(f) Abstracts of papers solicited by the Program Committee
or submitted to other societies for inclusion in joint programs will
be published in the journal provided they meet the above require-
ments, except that the rules regarding unpublished data and mem-
bership in the Society will be waived.

The following provisions shall govern the organization and re-
gulation of the Regional Divisions of the Society.
a) Name. Regional divisions shall use the name of the parent
Society with appropriate geographical term: e.g. PHILIPPINE
b) Membership. Regional Divisions shall elect to full mem-
bership only members of the PHILIPPINE PHYTOPATHOLOGI-
CAL SOCIETY, but each Regional Division may elect associate mem-
bers under such rules as it may adopt.
c) Publication. Summaries of proceedings of the annual meet-
ings of Regions shall be published in the journal at the Society's
expense. Abstracts of papers presented at Regional meetings may
also be published in the journal, subject to the rules governing
preparation and publication of abstracts as stated in Rule 6, except
that no more than two abstracts presented by any one member (as
sole or joint author) at the annual meeting of the Society and the
corresponding annual meeting at the Divisions shall be published
at the Society's expense.
d) Constitution. The constitution or articles of organization
of all Regions shall contain a provision or provisions ratifying the


above rules. The constitution of all Regions shall contain nothing
in conflict with the constitution of the PHILIPPINE PHYTO-
PATHOLOGICAL SOCIETY. With the exceptions defined by the
above rules, the Regional divisions shall enjoy complete autonomy.

The following provisions shall govern the establishment of af-
filiated relations with other phytopathological societies.
a) Upon advise to the Council that affiliation is desired, the
Council may invite to affiliation with the PHILIPPINE PHYTO-
PATHOLOGICAL SOCIETY any other professional society in the
field of plant pathology.
b) The existence of affiliation of other societies with this So-
ciety shall be indicated by listing the names of affiliated societies
in each number of journal.
c) The Council may at its discretion authorize the publication
of summaries of the proceedings of annual meetings of affiliated
societies in the journal.
d) The Council may at its discretion authorize the publication
of research papers of members of affiliated societies who are not
for limited periods, subject to annual renewal of the privilege.

These rules may be amended by a majority vote of the mem-
bers voting at any regular meeting of the Society, or by a majority
vote of the members voting by referendum.

May 7, 8, 1964

Test of fungicides for the control of soybean rust. C. R.
Batoon, E. V. Palis and A. V. Palo. The fungicides used were
Copper Lonacol, Shell Copper Fungicide, Dithane Z-78, Dithane X,
and Sulbar at the rate of 0.8, 1.1, 0.9, and 1.3 pounds per 100 gal-
lons, respectively. Unsprayed plots were included to serve as con-
trols. Spraying was made when the plants were exhibiting very mild
symptoms of infection. The experimental design was randomized
blocks with 4 replicates. Five spray applications were made at
intervals of 7 to 10 days. One week after spraying, the efficacy
of the different treatments was determined by taking the average
number of spots per leaf from 20 leaves of plants selected at ran-
dom. Two weeks after the fifth spraying, the average height, total
weights of pods and seeds of 40 uprooted plants selected at random
were determined. Statistical analysis of leaf spot data taken 1
week after the fourth spraying showed that Copper Lonacol was
the most effective of the chemicals used, followed by Shell Copper
Fungicide, Dithane Z-78, Dithane X, and Sulbar. The height of
plants from the different treatments did not differ significantly.
The weight of seeds from plants treated with Copper Lonacol, Shell
Copper Fungicide and Dithane Z-78 did not differ significantly
but were significantly better than Dithane X, Sulbar and control.
Although Copper Lonacol showed superiority in reducing infection
over the other treatments it was observed that Copper Lonacol, Shell
Copper Fungicide and Dithane Z-78 treated plants equally pre-
vented premature drying and falling of the leaves.
Effectiveness of fungicides for seed treatment of rice. -
J. M. Bandong, D. B. Lapis and F. T. Orillo. Five new and 2
standard fungicides were evaluated as rice-seed treatment materials
against 3 soil-borne organisms under greenhouse conditions. The
new fungicides were Omadine, Terraclor, PRB-32, G-1143, and
Chemical 1763; Arasan and Granosan were used as standards. All
were applied in dust form at the rate of 2 ounces per bushel of seed
except Granosan at 1 ounce. The inoculum used individually and
in combination (mixture of the 3), were Sclerotium rolfsii, Rhizoc-
tonia solani and a species of Pyth'ium from corn. Baked soil con-
tained in seedflats were infested with 8-day-old pure cultures of the


organisms. Treated seeds were sown in seedflats (100 seeds per
seedflat) 24 hours after treatment. Evaluation of the different
treatments was based on the general vigor of the seedlings, emer-
gence and final stand counts taken 5 and 10 days, respectively,
after sowing. No striking differences in growth and vigor of
seedlings were observed among treatments. From the Sclerotium-
infested soil, Arasan, Omadine, PRB-32, and Terraclor significant-
ly increased the stand of seedlings over the check. Only the first
two treatments had significantly higher mean count of seedling
emergence than the control. With Pythium sp. as the soil infesting
fungus, Omadine, Arasan, and Granosan had significantly increased
the final stand counts over Terraclor and the check. Omadine also
differed significantly from Chemical 1763. Based on mean seedling
emergence, G-1143, Omadine, Arasan, and Terraclor was significant-
ly better than the check. No significant difference was obtained
between treatments in soil infested with Rhizoctonia solani and the
3 organisms used in combination.
Effect of seed treatment fungicides on germination of corn un-
der field conditions. O. R. Exconde, F. D. Fuentes, and S. A.
Raymundo. Effect of 20 seed protectant fungicides on germina-
tion of corn under field conditions was tested on Philippine Hybrid
No. 3 for 3 successive seasons (1962-1963). One liter of seed was
treated with different seed protectants at the rates of 3/4, 1, and
2 oz. per bushel. Three plantings were made in the field and after
each planting the rest of the treated seeds were stored inside a
cold storage. The experimental design was randomized blocks with
4 replicates. In 3 plantings the treated seed gave significantly
higher germination than the untreated seed. No significant inter-
action was obtained between fungicides and rates in all plantings.
In the first planting, Captan 75, Omadine, Ortho-Cop, Semesan,
Captan-Dieldrin, and Tersan-Thiram gave, respectively, 57, 55, 55,
53, 53, and 52% germination compared with 29% from untreated
seed. In the second planting Vancide Z-65, Captan-Dieldrin, Seme-
san.Ortho-Cop, Omadine and Ceresan M had 61, 60, 60, 60, 59, and
58% germination, respectively, while the untreated seed had 46%.
The untreated seed, Captan-Dieldrin, Delson A-D, Omadine, Captan
75, Panoram 75, Semesan and Vancide Z-65 had 53, 70, 70, 69, 68,
65, 63, and 63% germination, respectively, in the third planting.
A preliminary test on the effect on mushroom production, of
straws rendered sterile with fumigant Dow'fume MC-2. V. M.
Madic and E. F. Roldan. The test was aimed at determining how
effectively rice straws after having been rendered sterile by treat-
ment with fumigant, Dowfume MC-2 might increase mushroom pro-
duction. The results obtained from the test showed that yields on
weight basis from a given unit volume of straws were considerably


higher for beds with sterile than for beds with non-sterile straws.
There was no significant difference between sterile clean old straws
and sterile clean fresh dry straws. Incidence of fungal and bacterial
contamination was relatively heavier in beds with non-sterile straws
than in those with sterile straws.
Virus diseases of weeds in the Philippines: II. Phaseolus lathy-
roides mosaic virus. Onofre R. Paguio, Dante A. Benigno and Ma.
Salome del Rosario. A virus isolate from a new cover crop,
Phaseolus lathyroides was studied through symptomatology, host
range, methods of transmission and physical properties. The virus
was found to be readily transmitted mechanically by sap or aphids,
with an incubation period ranging from 4 to 20 days. Four aphids
vectored the virus: Aphids citricidus, A. gossypi, A. laburni, and
A. maydis. The disease is seed-borne. In vitro and in vivo studies
showed that the virus was still infectious up to 72 hours and 1
week period, respectively, at laboratory and at freezer temperatures.
The dilution end-point was 1:1000 and the thermal inactivation
point ranged from 60 to 67C for 10 minutes. Infectivity was de-
stroyed by exposure to 50% ethyl alcohol and phenol at a dilution
of 1:100 for 10 minutes.
Plant parasitic nematodes associated with some agricultural
crops of the Philippines. -A. V. Palo and R. H. Califiga. Survey
of plant parasitic species of nematodes on major agricultural crops
has been started in the provinces of Laguna, Quezon, and Batangas
in 1962. A number of parasitic species has been discovered but
only the following have thus far been identified. (1) Rice root
nematode (Radopholus oryzae) is strictly parasitic in the roots.
This parasite has been observed to be widely distributed in the low-
land rice cultures of Laguna and Quezon. (2) White tip of rice
nematode (Aphelenchoides besseyi) is an ectoparasite on the bud
of rice plants. This pasarite is seed-borne. This has been observed
in lowland rice fields of Calamba, Laguna, In laboratory tests, the
rice varieties BPI 121, BPI 76, Raminad str. 3, Bengawan, Intan,
Sk 36 str. 482. Tjeremas, Peta, and BE3 have been observed to
be susceptible. (3) Corn lesion nematode (Pratylenchus zeae) feeds
within the roots (endoparasitic). This species occurs in large num-
ber in corn roots and soil samples obtained from corn fields in
various places. It has been found also associated with cane fields
in the areas surveyed. (4) Stunt nematode of sugar cane (Tylen-
chorynchus martini) is an ectoparasite on sugar cane roots. It is
also parasitic on roots of upland rice. High population density has
been observed in sugar cane fields of Laguna. (5) Lance nematode
of corn and sugar cane (Hoplolaimus coronatus) is ectoparasitic
on roots but has been found occasionally in sugar cane and corn roots


as facultative endoparasite. Population density is nil, hence, it does
not seem to be of economic consequence. (6) Burrowing nematode
of banana and abaca (Radopholus similis), an endoparasite of roots,
is an entirely different strain from that on citrus. This nematode
has been observed to exist in abaca fields in the Bicol region. (7)
Root lesion nematode of banana (Pratylenchus cofeae) an endo-
parasite of banana roots, produces dark brown lesions which result
into root rot. This species is the most common nematode of bananas
in Laguna, Quezon, and Batangas. (8) Reniform nematode on abaca
(Rotylenchus reniformis) is a sedentary parasite on roots of abaca.
Larvae of this species has been observed in abundance in soils
around the roots of abaca in the experimental plots of the Econo-
mic Garden. The same species has been reported to occur in abaca
fields at Davao Experiment Station of the BPI. (9) Citrus root
nematode (Tylenchulus semipenetrans) is not wide-spread in the
areas surveyed as it is in California. (10) Spiral nematodes (Heli-
cotylenchus spp.) The species of this genus are frequently asso-
ciated with many of our agricultural crops. Large numbers can
be found in the soil where they persist as ectoparasite of roots.
The common species are Helicotylenchus digonicus and H. nanus.
Bacterial soft rot of papaya in the Philippines. A. N. Por-
desimo and A. J. Quimio. A bacterial disease of papaya (Carica
papaya) was discovered at Pola, Oriental Mindoro in December,
1963. The early symptom is manifested by hydrotic areas on almost
any part of the plant particularly the reticulative veins, lamina,
petioles, and whorls. This diagnostic characteristic also occurs on
any part of the seedlings, and on any portion of the upper quarter
of the suffrutescent trunk of bearing plants. However, it has not
been observed on flowers and fruits. In advanced stage, leaves whose
petioles are infected droop, wilt, turn yellow but unsevered from
the trees. Necrotic spots on leaves, petioles and primordium turn
brown to black accompanied by a foul odor. Epiphytotic outbreak
has been corelated with insect population, rainfall, and humidity.
The bacterium isolated from infected tissues of naturally infected
plants and that reisolated from inoculated tissues is facultative
7 anaerobe rod which attains a size of 0.6-1.9 x 0.2-0.5 microns. It
is motile by peritrichous flagella, forming no spores, occurring
singly or occasionally in pairs, and gram negative. Nutrient agar
colonies are dull-white, round, raised, glistening and with entire
margins. In steamed potato cylinders, growth is dull-white, raised,
and glistening and smooth. Nutrient broth clouds rapidly with
formation of a very thin imperfect pellicle. Gelatin is liquefied,
nitrates reduced to nitrites, free ammonia produced, hydrogen sul-
fide produced, and starch not hydrolized. In tests for pathogenecity,
the bacterium infected excised leaves and petioles placed in: moist
chambers and killed 1-month-old seedlings. Carrot discs turned soft


but not disintegrated. On the basis of morphological, cultural, and
physiological characters, the bacterium is hereby identified to be-
long to the genus Erwinia.
Virus diseases of weeds in the Philippines: I. Passiflora foetida.
Ma. Salome del Rosario, Dante A. Benigno and Lucia Libed. -
An undescribed virus on wild passion vine (Passiflora foetida),
occurring abundantly in the Philippines was studied for its identity
through symptomatology, host range, methods of transmission, phy-
sical properties and electron microscopy. The virus was readily sap
transmitted to Passiflora foetida, P. edutis and to Chenopodium
amaranticolor plants (with an incubation period from 4 to 10 days).
In vivo and in vitro studies showed that the virus was infectious
for 24 hours only. However, it withstood dilution up to 1:10,000
and even after 1-hour exposure seemed very resistant to alcohol
(25, 50, 75 and 95%) and phenol and formaldehyde each with con-
centration of 1:100, 1:200, 1:500 and 1:1000. Aphis gossypii did
not transmit the disease from infected to healthy plants of Passi-
flora foetida and P. edulis. Two of the 8 families and 3 of the 14
species inoculated were susceptible to the disease: Passiflora and P.
edulis were systemic hosts but Chenopodium amaranticolor was a
local lesion host. Electron micrographs of this virus revealed rod-
shaped particles. The virus seems to be identical to that of the
Passion fruit mosaic virus reported by Van Velson in New Guinea.
Identification and host-parasite relationships of root-knot nema.
todes (Meloidogyne spp.) occurring in the Philippines R. B.
Valdez. A survey of host plants of root-knot nematodes was
conducted in 16 localities scattered in 11 provinces. In this survey,
170 species of plants belonging to 126 genera and 44 families were
found to be affected by root-knot. As far as can be determined,
23 genera and 57 species have not been previously reported as hosts
of root-knot nematodes. Out of a total of 203 collections of plants
infested by root-knot nematodes, 69 were used as sources of single
egg-mass isolates. These isolates were subsequently identified to
species. The species found were Meloidogyne incognita, M. incognita
acrita, M. javanica, M. arenaria, M. arenaria thamesis and M. hapla.
Meloidogyne incognita was the most common and widely distributed.
Forty-two plant species and varieties, including some common
weeds, were tested for their susceptibility to the 69 culture isolates.
Of these, 11 species were found to be susceptible to all the isolates;
9' species were highly resistant. Results of studies following the
proposed host-reaction method of identifying 4 species and 1 variety
of root-knot nematodes failed to corroborate the findings of Sasser


Cytoplasmic inheritance of susceptibility to Helminthosporium
maydis. R. L. Villareal and R. M. Lantican. A new case of
maternally inherited susceptibility to Helminthosporium maydis has
been demonstrated in the Fi and F2 reciprocal crosses and in any
progeny carrying the "T" cytoplasm. The constancy of the suscepti-
ble reaction in later generations has also been shown. Suceptibility.
to H. maydis is postulated to be controlled by a factor or factors
present in the "T" cytoplasm.


S iMeptox
Mepto^u x^y 50 / ^i~y^c

Ce i'SAe//A 4~,s A'/eyn eo M4e AQrn/er
'The h14.Se, 141 AYI1a A"e, hakati. Rial P, 9. Box 441. Tel. 865-61.

:,~ .e





Acedo, Juanito R.

Aclan, Francisco
Agregado, Belen A.

Alaban, Cesar A.

Alabanza, Armagedon A.

Alicbusan, Romeo V.

Ancajas, Rosabel R.

Angeles, Oscar R.

Baluyot, Sancho C.

Bandong, Jose M.

Baniqued, Ceferino A.

Belda, Lagrimas C.

Benigno, Dante A.

Dept. of Plant Pathology, UPCA
College, Laguna
Villanueva, Misamis Oriental
Bureau of Plant Industry
Bicol Rice & Corn Expt. Station
Pili, Camarines Sur
Dept. of Plant Pathology
University of Hawaii, Honolulu 14,
Hawaii, U.S.A.
Dept. of Botany & Plant Pathology
University of Minnesota
St. Paul, Minnesota, U.S.A.
Dept. of Plant Pathology, UPCA
College, Laguna
Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Plant Industry
Plant Quarantine Service
Port Area, Manila
AIA Feed Mills, Inc., Pioneer St.
Pasig, Rizal
Plant Protection Dept., IRRI
Los Bafios, Laguna
Bureau of Plant Industry
Baguio Experiment Station
Baguio City
Bureau of Plant Industry
Maligaya Experiment Station
Muiioz, Nueva Ecija
Dept. of Plant Pathology, UPCA
College, Laguna



Bergonia. Hilario T. Bureau of Plant Industry
San Andres, Manila
Bombay, Buenaventura B. 674-A E. Delos Santos, Cubao,
Quezon City

Boncato, Arturo A. Bureau of Plant Industry
Davao Experiment Station
Davao City
Calo, Ruth P. Bureau of Plant Industry
Baguio Experiment Station
Baguio City
Capinpin, Renato I. Shell Chemical Company
P.O. Box 441, Manila
Castillo, Bernardo S. Bureau of Plant Industry
Region No. 1, Dagupan City
Celino, Martin S. PHILCOA, Quezon City
Chanliongco, Rosauro C. Dept. of Plant Pathology, UPCA
College, Laguna
Chinte, Priscilla T. Plant Protection Dept., IRRI
Los Bafios, Laguna

Cortado, Rosendo V. Bureau of Plant Industry
Ilagan Experiment Station
Ilagan, Isabela
Diaz, Gorgonia S. PTA, Central Tobacco Expt. Station
Ilagan, Isabela
Divinagracia, Fe N. Bureau of Plant Industry
Bicol Rice & Corn Expt. Station
Pili, Camarines Sur

Divinagracia, Gil G. Dept. of Plant Pathology, UPCA
College, Laguna
Ela, Victoria M. Dept. of Plant Pathology, UPCA
College, Laguna
Eloja, Alfredo L. Bureau of Plant Industry
Davao Experiment Station
Davao City
Escober, Jaime T. Philippine Atomic Research Center,
PAEC, Diliman
Quezon City


Estrada, Bienvenido A.

Eugenio, Cesaria P.

Exconde, Ofelio R.

Feliciano, Alberto N.

Fuentes, Feliciano D.

Gaminde, Esperanza C.

Gandia, Isidro M.

Gavarra, Mario R.

Gibe, Lucio N.

Juliano, Jorge P.
Lapis, Delfin B.

Lawas, Orencio M.

Lopez, Melencio E.

Luistro, Adolfo O.

Magnaye, Lydia V.

Manzanilla, Jr., Arturo S.

Philippine Tobacco Administration
Ilagan, Isabela
Dept. of Plant Pathology
University of Minnesota
St. Paul 1, Minnesota, U.S.A.
Dept. of Plant Pathology, UPCA
College, Laguna
Dept. of Agronomy, UPCA
College, Laguna
Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Soils, CCRF
Camarines Sur National School
Pili, Camarines Sur
Bureau of Plant Industry
Davao Experiment Station
Davao City
Bureau of Plant Industry
Davao Experiment Station
Davao City
Chemical Dept., Macondray & Co., Inc.
P.O. Box 768, Manila
CLAC, Mufioz, Nueva Ecija
Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Plant Industry
Cagayan Valley Rice & Corn Expt. Sta.
San Mateo, Isabela
Philippine Sugar Institute
College, Laguna
80 San Jose
Zamboanga City
Bureau of Plant Industry
Davao Experiment Station
Davao City
Dept. of Plant Pathology, UPCA
College, Laguna


-Martinez, Aureo L.

Mayol, Perpetuo S.

Mendoza, Eleuterio M.

Napi, Gregoria N.

Nora, Dionisio M.

Nuque, Fausto L.

Orejudos, Leodegario C.

Orillo, Faustino T.

Orolfo, Mauro P.

Pacumbaba, Rodulfo P.

Palo, Alfredo V.

Parel, Alejo R.

Pordesimo, Agustin N.

Protacio, Domingo B.

Pusag, Cecilio C.

Plant Pathology Section
Bureau of Plant Industry
Lipa, Batangas
Dept. of Agronomy, Oklahoma State
University, Stillwater,
Oklahoma, U.S.A.
Forest Products Research Institute
College, Laguna
Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Plant Industry
Lipa Expt. Station, Lipa City
Plant Protection Dept., IRRI
Los Bafiios, Laguna
Samar Institute of Technology
Catarman, Samar
U.P. College of Agriculture
College, Laguna
Bicol Abaca Experiment Station
Calasgasan, Daet, Camarines Norte
Dept. of Plant Pathology
Kansas State University
Manhattan, Kansas, U.S.A.
Bureau of Plant Industry
Economic Garden, Los Bafios,
Dept. of Entomology, UPCA
College, Laguna
Dept. of Plant Pathology
Cornell University
Ithaca, New York, U.S.A.
Dept. of Plant Pathology
University of Wyoming
Laramie, Wyoming, U.S.A.
Research Dept., Canlubang
Sugar Estate
Canlubang, Laguna


Quebral, Florendo

Quimio, Arcadio J.

Quiniones, Sebastia

Quintana, Imelda J

Ramos, Ester A.
Raymundo, Severin

Respicio, Corazon

Reyes, Gaudencio

Reyes, Juanito C.

Reyes, Tiburcio T.

Rivera, Jacinto R.

Roldan, Emiliano I

Roperos, Nerius I.

Rosario, Ma. Salom.

San Juan, Mario 0

Santamaria, Pedro


C. Dept. of Plant Pathology
University of Illinois
Urbana, Illinois, U.S.A.
Dept. of Plant Pathology, UPCA
College, Laguna
n S. Mindanao Agricultural College
Musuan, Bukidnon
Dept. of Plant Pathology, UPCA
College, Laguna
LTAO, Land Authority, Manila
1o A. Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Plant Industry
Luna Experiment Station
Luna, Apayao, Mt. Province
M. c/o Guest House, Central Azucarera
de Tarlac, San Miguel, Tarlac
Dept. of Plant Pathology
Kansas State University
Kansas, U.S.A.
Dept. of Plant Pathology, UPCA
College, Laguna
Philippine Sugar Institute
Bacolod City
Dept. of Plant Pathology
Araneta University, Victoneta Park
Bureau of Plant Industry
Davao Experiment Station
Davao City
e E. del Dept. of Plant Pathology, UPCA
College, Laguna
Dept. of Plant Pathology, UPCA
College, Laguna
A. Bureau of Plant Industry
San Andres, Manila


Santos, Leonardo G.

Silva, Cesar B.

Tamayo, Bienvenido P.

Teodoro, Nicanor G.

Tidon, Felicito R.

Valdez, Rodrigo B.

Ventura, Pedro F.

Bureau of Plant Industry
Cagayan Valley Experiment Station
San Mateo, Isabela
Bureau of Plant Industry
Plant Quarantine Service
Port of Iloilo, Iloilo City
ESSO Standard Fertilizer & Chemical
Co., Inc. (Phil.), Leviste Bldg.
215 Buendia Avenue, Makati, Rizal
Q.M.C. Bldg., Espafia Ext.
Corner Sampaloe Ave., Quezon City
Bureau of Plant Industry
Iloilo City
Dept. of Plant Pathology, UPCA
College, Laguna
Bureau of Plant Industry
San Andres, Manila


S Republic'of the Philippines
.- iartMat of PNblic Works and Communications
S- Manila
(Required by ACT 2580)
S The-undersigned; RENATO I. CAPINPIN, business manager of the
PHILIPPINE PHYTOPATHOLOGY published semi-annually in English
at College, Laguna, after having duly sworn in accordance with law,
heieby submits the .following statement of ownership, management,
circulation, etc, which is required by Act 2580, as amended, by Com-
monwealth Act No. 201:
Editor: Emiliano F. Roldan .................. Araneta University
Victoneta Park,' Rizal
Managing Editor:
Business Manager: Renato I. Capinpin ....... Shell Chemical Co.
P.O. Box 441, Manila
Owner: Philippine Phytopathology .......... College, Laguna
Publisher: Philippine Phytopathology ........ College, Laguna
Printer: G. Rangel & Sons .................. 400 M. dela Fuente St.,
Sampaloc, Manila
If publication is owned by a corporation, stockholders owning
one per cent or more of the total amount of stock ........... none.
Bondholders, mortgages, or other security holders owning one per
cent or more of the total amount of security ........ Not applicable.
In case of daily publication, average number of copies printed and
circulated of each issue during the preceding month ............, 19....
1. Sent to paid subscribers ........................... 400
2. Sent to other than paid subscribers ............... 100
In case of publication other than daily, total number of printed
and circulated of the last issue dated .................... 19....
1. Sent to paid subscribers ............ ............. 400
2. Sent to other than paid subscribers .............. 100

T O T A L .................... 500
Business Manager
Republic of the Philippines )
City of Manila
Subscribed and sworn to before me this 23rd day of March, 1965,
at Manila, the affiant exhibiting his Residence Certificate No. A-5509306,
issued at Makati, Rizal, on 24th February, 1965.
Page No. 63 Notary Public
Book No. I
Series of 1965
NOTE: This form is exempt from the payment of documentary
stamp tax.






an 87% copper oxychlo-
ride with 10% spread-
ing and sticking agents

an 80% colloidal sulfur

a 65% zineb formulation

contains 80% maneb mi-
croline wettable powder

the only curative fungicide
with lasting effect.

For animal health products, rely on
Buendia Ave., Mkoati, Rizal M. C. Briones/Lopu Lopu Sis., Cebu City
Bacolod llo;lo Manila Davao

Is -L

2020 Shaw Blvd., Pasig, Rizal
P.O. Box 3461, Manila
Tel. Nos. 6-66-21; 6-66-22
6-61-95; 6-84-21
Exclusive Philippine Distributor
on Agricultural Chemicals:
containing Bromophos, controls agricultural
and hygienic insect pests without hazards to
warm-blooded animals; LD 50 oral is 3.750
mg/kg. and dermal is 8,750 mg/kg.
A highly systemic insecticide
Maneb, Zineb, Copper Fungicides
Against fungus diseases infesting agricultural
2, 4-D Weedkillers
A selective weedkiller with a growth promo-
ter base.
Alferin Rodenticides
An anticoagulant.
Manufactured by:

O CELA Landw, Chemikalien,
G.m.b.R. Ingelheim / Rhein,
West Germany

University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs