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 A spray schedule for citrus














Group Title: Bulletin - University of Florida. Division of Agricultural Extension ; no. 18
Title: A spray schedule for citrus
CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00026364/00001
 Material Information
Title: A spray schedule for citrus
Series Title: Bulletin
Physical Description: 1 sheet (folded) : ; 27 x 37 cm.
Language: English
Publisher: University of Florida, Division of Agricultural Extension
Place of Publication: Gainesville Fla
Publication Date: 1919
 Subjects
Subject: Citrus -- Diseases and pests -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
General Note: "March 1919".
Funding: Bulletin (University of Florida. Agricultural Extension Division)
 Record Information
Bibliographic ID: UF00026364
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: aleph - 002569298
oclc - 47285075
notis - AMT5600
 Related Items
Other version: Alternate version (PALMM)
PALMM Version

Table of Contents
    Historic note
        Historic note
    Title Page
        Page 1
    A spray schedule for citrus
        Page 2
Full Text





HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida







March 1919


COOPERATIVE EXTENSION WORK IN
AGRICULTURE AND HOME ECONOMICS

UNIVERSITY OF FLORIDA DIVISION OF AGRICULTURAL
EXTENSION AND UNITED STATES DEPARTMENT
OF AGRICULTURE COOPERATING

P. H. ROLFS, Director









A SPRAY SCHEDULE FOR

CITRUS












COPIES OF THIS BULLETIN MAY BE HAD FREE
BY ADDRESSING EXTENSION DIVISION,
UNIVERSITY OF FLORIDA, GAINESVILLE, FLA.


Bulletin 18




TACK UP IN A CONVENIENT PLACE
WHERE THE SCHEDULE
CAN BE REFERRED TO READILY


A SPRAY SCHEDULE FOR CITRUS


COPIES OF THIS BULLETIN MAY BE HAD FREE
BY ADDRESSING EXTENSION DIVISION,
UNIVERSITY OF FLORIDA, GAINESVILLE, FLA.


FRUIT


ENEMY


MATERIALS


TIME OF APPLIC TION


REMARKS


Apply if scab is abundant on old leaves. When
rapefruit Scab Bordeaux mixture JUST BEFORE THE FIRS FLUSH OF Bordeaux Mixture is used it must be followed
3-3-50 GROWTH by two of the specified lime sulphur applica-
tions within two months to reduce scale in-
sects

Scab Lime sulphur solution To be applied if scab infections appear on the
GrapefRust mites 32 Baume; 21/2 gal. in JUST BEFORE THE PETA OPEN new growth, or if rainy weather favorable for
Grapefruit Red spiders 100 gallons scab follows the first application



Grapefruit Scab, Thrips Lime sulphur solution,
3 and Rust mites 21 gal. in 100 gallons plus 13 oz. WHFN 1/3 TO 1/2 T PETALS Add the nicotine if 25 or more thrips per bloom
Oranges Red spiders Nicotine sulphate to 100 gal. of the ARE OFF are present
spray solution


Scab, Thrips R
S Grapefruit Rust mites Lime sulphur solution, 7 TO 10 DAYS AFT R 1/3 TO
Red spiders 21 gal. in 100 gallons 1/2 THE PETALS A OFF



Scab, Scale
Grapefruit Rust mites Lime sulphur solution, 14 TO 20 DAYS AFTER :/3 TO 1/2 To be given if rainy weather favorable for scab
G Crawlers 21/ gal. in 100 gallons THE PETALS ARE OFF .. infection follows the fouhthappjicatin


Rust mis Lime sulphur solution, If any two out of Nos. 3, 4, and 5 have been
Sust mites 2 gal. in 100 to 11/ gal. in 100 APRIL 5TH TO 15TH given, this can be omitted; otherwise this is
Grapefruit Tearstain gallons the critical spraying for rust mite on grape-
fruit

The oil emulsion should be used so that the di-
Grapefruit White fly IN MAY WHEN TTI FRUIT IS luted spray material should contain 1% of oil,
and Scale insects Oil emulsion 1% plus dry soda sul AT LEAST 1 INC I DIAM- that is, if the emulsion contains 66% of oil,
7 Oranges Rust mites phur 2 lbs. in 100 gallons ETER 11/2 gallons would be required for 100 gallons of
S._ water

Grapefruit Lime sulphur solution, On oranges this is the critical rust mite spray,
and ust mites 2 gal. in 100 to 11/ gal. in 100 IN JUNE if the fruit has not received any previous lime
8 Oranges Tearstain gallons sulphur applications



Grapefruit PROBABLY IN SEP OR OCT.,
9 and White fly Oil emulsion 1% BUT CERTAINLY BEFORE FEB. To be given if scale insects or white fly are
Oranges Scale insects 1ST. noticeable


Grapefruit
and
Oranges


Rust mites


Lime sulphur solution,
2 gal. in 100 to 11/2 gal. in 100
gallons


NOVEMBER TO JANUARY


To be given only if rust mites are noticeable


The following spray schedule is the result of a
conference held at Orlando, Fla., Feb. 27, 1919,
participated in by H. R. Fulton, J. R. Winston
and J. J. Bowman, pathologists, and W. W.
Others, entomologist, U. S. Department of Agri-
culture; H. E. Stevens, pathologist, and J. R.
Watson, entomologist, Florida Experiment Sta-
Stion; and E. W. Berger, entomologist, State Plant
Board.

This combined schedule is based on the work
to date of state and federal investigators and
represents their composite judgment regarding
the control of certain citrus insects and diseases
by spraying. The five applications in heavy type
(Nos. 3, 4, 7, 8 and 9) are recommended as suf-
ficient for the control of the enemies usually
destructive on grapefruit in an average season,
provided the spraying is done thoroly. Oranges
will ordinarily require only three applications
(Nos. 7, 8 and 9). Under conditions usually
favorable for disease or insect increase certain
or all of the remaining applications will also be
required.'

The scab applications indicated for grapefruit
may also be required on highly susceptible vari-
eties of oranges of the kid glove type.

Application number 3 will be required on
oranges only when thrips are abundant.

Be cautious about using lime-sulphur solution
when the temperature is above 900 F. If applied
under this condition, use the weaker strength
and be sure of the accuracy of the Baume test
and diluting.

Bordeaux mixture requires 3 pounds of blue-
stone and 3 pounds of lime in 50 gallons of water.
Get the best grade of fresh stone lime obtainable.
Never use air slaked lime. If hydrated lime or an
inferior grade of quick lime must be used make it
four pounds.


______________


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