DISEASES
 
Growth Stage Leaf Blast and/or Panicle Blast Sheath Blight (SHB) Bacterial Leaf Blight (BLB)

Rice Tungro (RT)

Nursery/Seedbed >20% of seedbed has leaf blast None Negligible None
Early Tillering >20% of the field infected with leaf blast Negligible Negligible >20% of the field infected with RT
Mid to Maximum Tillering/EPI >30% of the field infected with leaf blast >40% of the field infested with SHB >30% of the field infected with BLB >40% of the field infected with RT
Flowering >10% of the field infected with neck blast >40% of the field infested with SHB seen on flag leaves >30% of the field infected with BLB seen on flag leaves Tolerable
Milking Stage >10% of the field infected with panicle blast >40% of the field infested with SHB seen on spikelets >30% of the field infected with BLB and with undeveloped spikelets Tolerable
Grain Filling >10% of the field infected with panicle blast >40% of the field infested with SHB and >10% of unfilled grains >30% of the field infected with BLB and with undeveloped spikelets Tolerable
Maturity >10% of the field infected with panicle blast >40% of the field infested with SHB and >10% of unfilled grains >30% of the field infected with BLB and with undeveloped spikelets Tolerable