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and Integrated Pest Management - part - usaid

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86 PESTICIDE MANAGEMENT AND IPM IN SOUTHEAST ASIA<br />

BPH population<br />

HighF<br />

Rice WS Rice DS Secondary<br />

Crop<br />

on res<br />

Jos<br />

eSif n<br />

a...... ..<br />

Low I I I I I<br />

Mar Apr May June July Aug. Sept. Oct. No,. Dec<br />

Dec ion Feb<br />

Figure 1. Cropping system type I in well irrigated areas (in reality staggered<br />

planting).<br />

BPH population<br />

High<br />

Rice IS Secondary Rice DS<br />

Crop<br />

Low I<br />

I<br />

Jon Feb Mar Apr May June July Aug Slipt Oct Nov Dec<br />

Dec<br />

Figure 2. Cropping system type 2 in well irrigated areas (in reality staggered<br />

planting).

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