INSECT PESTS
 
Growth Stage Stemborer (SB) Rice Black Bug (RBB) Brown Planthopper (BPH) or White-backed Planthopper (WBPH)

Rice Bug (RB)

Nursery/Seedbed >5 egg-masses/sq m (case in Mindanao) None None None
Early Tillering >30% deadheart >10% (nymph and adult) and >20% deadheart >25 all stages of insects/hill None
Mid to Maximum Tillering/EPI >1% eggmass/sqm >20% (nymph and adult) and >30% deadheart >50 all stages of insects/hill None
Flowering >18% whitehead >20% (nymph and adult) and >20% whitehead >50 all stages of insects/hill Negligible
Milk Stage >18% whitehead >20% (nymph and adult) and >20% whitehead Tolerable >5 (nymph and adult) / sqm
Grain Filling >18% whitehead >20% (nymph and adult) and >20% whitehead Tolerable >10 (nymph and adult) / sqm
Maturity >18% whitehead >20% whitehead Tolerable Tolerable
         
NOTE: Early tillering, maximum tillering/early panicle initiation (EPI), flowering, grain filling, and maturity are the stages wherein a Farmers' Meeting is held. Insect pests are monitored in the early morning (5 am) or late afternoon (5 pm). Other pests are usually monitored in the afternoon (5 pm.)