and Integrated Pest Management - part - usaid

SAMPLING MElIODS FOR PEST SURVEIIIANCE IN RICV 121
compare time expenditure and agreement in control decisions, with other
sampling methods.
The sampling plans presented hcre are all based on tie current recommended
economic thresholds in Thailand. However, loss assessment studies and on-farm
trials to test these thresholds are still ongoing. Uthese activities should lead to
readjustments, it will only be a matter of recalculation to adapt the sequential
sampling plans. For the time being, it seems most essential to prove, in
collaboration with the extensive service, the feasibility of these sampling
methods for farmers.
ACKNOWLEDG ENIENTS
The authors express their sincere gratitude to Dr. Weerawooth Katanyukul,
Dr. Chalerm Sindhusake and Mrs. Chintana Tayatum for permission to use their
unpublished data in the development of the stemborer and g:Il midge models, to
Mr. Vanich Ya-Klai for assisting in data collection and to the Plant Protection
Service Unit, Khon Kaen, for cooperating in the testing of the stemborer
sampling plan.
LITERATURE CITED
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