and Integrated Pest Management - part - usaid

ORGANIZATION OF TIIE SURVIEII ,ANCF AND FARLY WARNING SYSTEMS
GROWTH STAGE CODE The following numeric code is used:
0 Gcrmination to emergence
I Seedling or transplanting
2 Tillcring
3
4
5
Stem elongation
Booting (bcginning with panicle initiation)
Heading
6
7
Flowering
Milk stage
8
9
Dough stage
Mature grain
YIELD Five randomly selected plots with 2 nj
surveillance field at harvest time. After threshing, the paddy rice is weighed and
2 each are harvested in every
its moisture content measured. The average of the five plots is recorded.
OTHER AGRONOMIC DATA Every season agronomic and economic data are
collected from each surveillance field in order to find out the impact of the
farmer's agricultural practices on harmful organisms, the impact of the farmer's
crop protection measures and their change in effectiveness, and the farmer's costs
and returns from crop protection. This information serves as an essential
extension aid for future recommendations. The agronomic data sheets are
forwarded to the Regional Plant Protection Office ror evaluation at the end of
each season.
Sampling Procedures for Other Organisms
PREDATOf.S Actual co)unts are taken of predator numbers per ten sweeps.
The main predators are spiders, dragonflies, damselflics, Coccinellidae,
Staphilonidac, Dcrnaptera, Carabid beetle, and Cyrthorhinus sp.
WEEDS Total weed infestation is indicated as a percentage of soil cover per
surveillance field. For Broadlcaved weeds, the frequency in terms of percentages
in the whole weed population is taken. The same is done with sedges, grasses
and algae.
TREATMENT THRESIIOLDS FOR MAJOR RICE PESTS
The specific treatment thresholds, with their accompanying sampling
techniques, are presented in Appendix I.
CONCLUDING REMARKS
Based on our experience so far with implementing the SEWS in Thailand,
we can conclude that:
1. the PPSUs know the pest situation of the duty area by analyzing the pest
data collected,
243