Treatments combination | Sowing dates | ||
---|---|---|---|
Early sowing | Mid-sowing | Late sowing | |
Insecticide application frequencies | |||
1. Control or untreated (F0) | T1 | T2 | T3 |
2. Once @ 2-WAE (F1) | T4 | T5 | T6 |
3. Twice @ 2 and 4-WAE (F2) | T7 | T8 | T9 |
4. Thrice @2,4 and 6-WAE (F3) | T10 | T11 | T12 |
5. Four times @ 2,4,6 and 8-WAE (F4) | T13 | T14 | T15 |
6. Weekly spray (positive control) (F10) | T16 | T17 | T18 |