The Insect pest survey bulletin

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Material Information

Title:
The Insect pest survey bulletin
Physical Description:
v. : maps ; 26 cm.
Language:
English
Creator:
United States -- Bureau of Entomology
United States -- Bureau of Entomology and Plant Quarantine
Publisher:
Bureau of Entomology, U.S. Dept. of Agriculture
Place of Publication:
Washington, D.C.
Publication Date:
Frequency:
monthly, mar-nov. plus annual[1926-]
monthly, apr.-nov.[ former 1922-1925]
monthly, may-nov.[ former 1921]

Subjects

Subjects / Keywords:
Insect pests -- Periodicals   ( lcsh )
Entomology -- Periodicals   ( lcsh )
Genre:
serial   ( sobekcm )
federal government publication   ( marcgt )

Notes

Dates or Sequential Designation:
Vol. 1, no. 1 (May 1, 1921)-
Numbering Peculiarities:
Vol. 14, no.9 issued only as a supplement..
Issuing Body:
Vols. for May 1, 1921-1934, issued by the U.S. Bureau of Entomology; 1935- by the U.S. Bureau of Entomology and Plant Quarantine.
General Note:
"A monthly review of entomological conditions throughout the United States" (varies slightly).
General Note:
Includes annual summary starting in 1926.
General Note:
Includes some supplements.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 030368280
oclc - 08816534
lccn - sn 86033699
Classification:
lcc - QL1 .I56
System ID:
AA00023228:00111

Table of Contents
    Front Cover
        Page i
        Page ii
    Hessian fly infestation at harvest time 1936
        Page 309
        Page 310
        Page 311
        Page 311-A
    Back Cover
        Page 312
Full Text

(

2


THE INSECT PEST SURVEY

BULLETIN


Volume 16 Supplement to Number 6 August 31, 1936


BUREAU OF

ENTOMOLOGY AND PLANT QUARANTINE

UN I TED STATES

DEPARTMENT OF AGRICULTURE

AND

THE STATE ENTOMOLOGICAL


AGENCIES COOPERATING


" ..















Digitized by the Internet Archive
in 2013


http://archive.org/details/insectl1936no66









PEST SURVEY


Vol. 16 Supplement to No. 6 August 31,1936



HESSIAN FLY INFESTATIOIT AT HARDEST TIME 1936

C. M. Packard, Senior Entomologist,
Division of Cereal and Forage Insect Investigations,
Bureau of Entomology and Plant Quarantine,
U. S. Department of Agriculture.


The following information on current hessian fly conditions was
obtained through surveys conducted principally by the staffs of Bureau of
Entomology and Plant Quarantine field laboratories located at Manhattan and
Wichita, Kans.; Lafayette, Ind.; and Carlisle, Pa. Credit for assistance
in such surveys is given the Entomologists of the States of Illinois and
Ohio.

As shownm by the accompanying map, these surveys include the main
winter-wheat regions of the Central and Eastern United States. The severity
of the outbreak observed in progress of development last fall was consider-
ably moderated by subsequent weather- conditions unfavorable to fly activity.
The unusually heavy late fall brood suffered considerable winter mortality.
Unfavorable spring weather conditions, such as drought, sudden freezes, pro-
longed subnormal temperatures, and heavy rains, at critical times during the
development of the spring brood combined to check the progress of the out-
break to a considerable extent. However, moderate to severe spring infes-
tations developed throughout a rather large area extending from east-central
Missouri through central and southern Illinois, widening to include most of
western Indiana and narrowing again to continue across southern Indiana into
southwestern Ohio (see map). Light to moderate infestations also occurred
in some localities of southern Michigan, east-central Ohio, and north-central
Pennsylvania. The most severely infested area included southern Illinois,
southern Indiana, and southwestern Ohio. In this area most of the fields
observed were injured to some extent and much fallen straw was in evidence.
It is in this area thn.t the greatest danger of serious fall infestation is
apparent.

Judging from rather fragvmntary evidence from Illinois, Indiana, and
Ohio, the rate of mortality in the aestivating puparia due to desiccation
and parasites is unusually high. Several dissections made at Lafayette
during early August showed only 1 to 9 percent live puparia. Summer mortali-
ty, however, is al-'i.ys high and, at least in the areas of moderate to heavy
spring infestation, enough flies will undoubtedly survive the summer to
produce a heavy fall brood if normal or above-normal rainfall should occur


-309-


BULLE T IN


I NSE CT






-310-


in late August and early Septemnb-r. Tho farmers in those areas should be
advised to observe the safe sowing dates, plow wheat stubble under well
before seeding time, and to destroy volunteer wheat wherever possible.
The last two measures are more practicable than usual in the East Central
States because of the death fr.-n drought of the clover stands in many wheat
stubble fields.

Following is a summary of the data on which this report is based.


_____Aroen


Nc-'b raska
Southwest-- --
South-central .---- :
Southeast---------

Kansas
Northwest-.-------
North-central----
Northeast---------
So ith-central-----
Southeast---------

OCklnhoma
Yorth-central--- -
Northeast---------

.Missouri
Northwest---------
West-central------
Ea.st-contra.l-------
Southwest---------
Southeast---------

Illinois (Mostly from
Northern ----------
West-central _-- --
East-central------
Southern-._-------*


Mi Qhian
Southern----------


Northwestern_
1orthcastern------
'3Ist-cuntral------
Easft-ccntral------
Southwestern -----
So athacs tern------


Fields
amplcd

INumbc r


21
25


22
29
45
35
64


21
31


23
35
44
33
26

survey
29
77
24
51


4s


35
31
31
55
43
33


1 Trace.


by St


Stems infested
Av',r ar.-e .!'-txiir, ir __ ,nimrji
P, rcont : Percent : Percent

0 0 0
0 2 0



4 0
3 4 0o
1 8 0
1 16 0
3 22 0
S
0 0 0
(1) 4 o
S
S
3 20 0
7 30 0
11 38 0
.4 : 0
7 50 0o

ate entomoioxists.)
10 83 0
21 74 0
23 64 2
41 94 10


12 44 0


25 S 0
7 0
25 74 0
39 36 0
33 82 6
34 : 0
3)4* .-









-311-


Fields :Stems infested.
Area : sampled A Aver ac : Maximum : Minimum
Number Percent : Percent : Percent
Ohio (From survey bby- State entomologists)
Northwestern------ 90 6 0 0
Northeastern ---- : 130 11 0 0
Southeicstern------- 110 iS 0 0

Pennsylvania
West-central ---- : 15 4 22 0
North-central---- : 20 1' l1g 0
Southeastern-----: 70 4 14 0

Maryland -------------.- 4o- 5 0

Delaware--------------.. 15 1 6 0

Virginia
Northwest---------- 20 : 20 0
Northeast---------- 45 4o 0
South-central.. 15 1 4 0

North Carolina
Central ------------ 30 1 06
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