Bacillus thuringiensis drift deposits on foliage and physical samplers : a summary of the Utah drift studies 1991-1993

70 Pages·1995·3.9 MB·English

by  Teske, Milton E

Historic, Archive Document
Do not assume content reflects current
scientific knowledge, policies, or practices.

aSB763.C2F45
United States Bacillus thuringiensis Drift
DAgerpiacrutlmteunrte of Depositwiie ons on Foli° age and
Physical Samplers - A Summary of
Forest Service
the Utah Drift Studies 1991-1993
Forest Health
Protection
Davis, CA
FPM 95-18
June 1995
Pesticides used improperly can be injurious to human beings, ‘animals,
and plants. Follow the directions and heed all precautions on labels. Store
pesticides in original containers under lock and key—out of the reach of
children and animals—and away from food and feed.
Apply ‘pesticides so that they do not endanger humans, livestock, crops,
beneficial insects, fish, and wildlife. Do not apply pesticides where there
is danger of drift when honey bees or other pollinating insects are visiting
plants, or in ways that may contaminate water or leave illegal residues.
Avoid prolonged inhalation of pesticide sprays or dusts;.wear protective
clothing and equipment, if specified onthe label.
If your hands become contaminated with a pesticide, do not eat or drink
until you have washed. In case a pesticide is swallowed or gets in the eyes,
follow the first aid treatment given on the label, and get prompt medical
attention. If a pesticide is spilled on) your skin or clothing, remove clothing
immediately and wash skin thoroughly.
NOTE: Some States have restrictions on the use of
certain pesticides. Check your State and local regulations.
Also, because registrations of pesticides are under constant
review by the U.S Environmental Protection Agency,
consult your local forest pathologist, county agriculture
agent, or State extension specialist to be sure the intended
use is still registered.
FPM 95-18
(C. D. I. Technical Memo 95-11)
July 1995
Bacillus thuringiensis Drift Deposits
on Foliage and Physical Samplers -
A Summary of the Utah Drift Studies
1991-1993
Prepared by:
Milton E. Teske
Continuum Dynamics, Inc.
P. O. Box 3073
Princeton, NJ 08543
Contract No. 53-0343-1-00153
Prepared for:
USDA Forest Service
Forest Health Technology
Enterprise Team
Davis Service Center
2121C Second Street
Davis, CA 95616
[phone] voice
[phone] fax
John W. Barry
Project Officer
ie
yo) ri oer
SUMMARY
This Memorandum summarizes results of the three Utah drift studies performed in
late spring of the years 1991, 1992 and 1993 in the mountain canyons above Salt Lake
City, Utah, as part of a gypsy moth (Lymantria dispar L.) eradication project. The
biopesticide Bacillus thuringiensis var. kurstaki was sprayed aerially to protect stands of
Gambel oak (Quercus Gambelii Nutt). Previous reports (Barry et al. 1993a and Teske
1995a) detail the 1991 and 1992 studies. This report re-examines the 1991 study (with
new information about the spray material physical properties) and details the 1993 study. It
is intended that this report form the basis of a more complete examination of the goals and
objectives of the combined spray projects, to be written with the help of the enclosed
Statistical information.
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TABLE OF CONTENTS
Section Page
SUMMA B:Yaegee tee Spe cee tern Pe searisec. See. oy,. nestlorins: 9. ces ii
INTRODUGTIO Naseer fe, heey ner srt, eel test aol! 1
BIEUDIS LUD eS UIVIAdMy Yaeeemrnns tens SRSSS Ie et os ene sn ssn esses ens 3
SOAMPBEER/ SUA DISTICSae terre eee crea trite. ceethnaa cnet e ne. oe 7
7eESGBG MODEE COMPARISONS Sr Gee. sevice stat eevee acs. bees 15
a lLO9RAND 1992S TUDYACOMPARISONS#e Sots tins nisc ccseeee 34
SDA TAISUM MAR Yeeererncwen sett, tec ni.c sate ferent sc AMi be tas. ss0c es 47
MICONGEU SIONS were mete: Se Seer ocr eer aes ere 52
- ACKNOWLEDGMENTS. .............::seseeseeeeeeeeeeeeeeeseeeeeeeeees 53
PREG EREN CES Mpeg cme cctewe oe perctre oases Sorts. da s'ees ee sess oo 54
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