Table 1 Larval population of H. armigera in different treatment combinations in berseem during vegetative growth stage
Treatments | H. armigera population/m row length in Egyptian clover | Pooled mean | Reduction (%) | ||||
|---|---|---|---|---|---|---|---|
1st week March | 2nd week March | 3rd week March | 4th week March | 1st week April | |||
T1: marigold + bird perches | 5.29 (2.50) | 5.15 (2.47) | 4.00 (2.23) | 3.23 (2.05) | 2.63 (1.90) | 4.06 (2.03) | 57.35 |
T2: marigold + bird perches + NSKE | 3.22 (2.05) | 2.33 (1.82) | 2.10 (1.76) | 1.90 (1.70) | 1.90 (1.69) | 2.29 (1.80) | 75.8 |
T3: chickpea + bird perches | 6.20 (2.68) | 5.51 (2.55) | 5.0 (2.44) | 4.66 (2.37) | 3.80 (2.19) | 5.03 (2.44) | 47.16 |
T4: chickpea + bird perches + NSKE | 3.78 (2.18) | 3.23 (2.05) | 2.96 (1.99) | 2.33 (1.82) | 1.96 (1.72) | 2.58 (1.95) | 72.8 |
T5: sunflower + bird perches | 6.16 (2.67) | 5.85 (2.61) | 5.40 (2.50) | 4.56 (2.35) | 3.96 (2.22) | 5.18 (2.47) | 45.6 |
T6: sunflower + bird perches NSKE | 4.71 (2.39) | 4.33 (2.30) | 3.60 (2.14) | 2.83 (1.95) | 2.20 (1.78) | 3.53 (2.11) | 63.0 |
T7: NSKE at 3% | 6.31 (2.70) | 5.86 (2.61) | 5.20 (2.48) | 4.36 (2.31) | 4.50 (2.34) | 4.37 (2.48) | 54.0 |
T8: sole crop | 7.48 (2.91) | 7.46 (2.90) | 8.50 (3.0) | 10.66 (3.41) | 13.66 (3.82) | 9.52 (3.20) | – |
CD (p = 0.05) | 0.13 | 0.13 | 0.15 | 0.20 | 0.25 | 0.56 | |