Table 11 Seasonal incidence of sucking pests and spider population on different cotton cultivars (Pooled over years 2016─2018)

Main plot treatment

 Protected

3.52 ± 0.34^a

4.80 ± 0.64^a

1.13 ± 0.09^a

2.27 ± 0.41^a

0.07 ± 0.02^a

0.22 ± 0.02^a

 Unprotected

6.09 ± 0.61^b

7.57 ± 0.87^b

2.11 ± 0.10^b

4.15 ± 0.38^b

0.30 ± 0.09^b

0.43 ± 0.02^b

Sub plot treatment (Cultivar)

 DCH 32

6.28 ± 1.15^b

9.29 ± 1.28^d

1.59 ± 0.34^ab

4.58 ± 0.35^c

0.16 ± 0.05^a

0.40 ± 0.06^a

 RCH 2

5.42 ± 0.49^b

6.36 ± 0.78^c

1.69 ± 0.13^b

4.58 ± 0.38^c

0.03 ± 0.01^a

0.28 ± 0.07^a

 Phule Dhanvantary

2.70 ± 0.40^a

1.83 ± 0.42^a

1.32 ± 0.32^a

1.22 ± 0.33^a

0.11 ± 0.03^a

0.34 ± 0.06^a

 Suraj

6.15 ± 0.96^b

4.82 ± 0.36^b

1.63 ± 0.14^ab

3.32 ± 0.88^b

0.52 ± 0.19^b

0.29 ± 0.05^a

 Suvin

3.47 ± 0.52^a

8.64 ± 0.50^d

1.86 ± 0.29^b

2.35 ± 0.48^b

0.11 ± 0.02^a

0.32 ± 0.04^a

Variance ratio (F)

 Main plot treatment

26.977*

293.587**

51.360*

189.543**

19.177*

64.641*

 Sub plot treatment

14.628***

202.728***

4.319*

37.909***

22.585***

NS

 Main plot treatment × Sub plot treatment

3.433*

6.904**

4.519*

4.611**

11.478***

NS

 r²

0.885

0.985

0.907

0.941

0.921

0.792