Effect of Different Spacings and Fertilizer Levels on Incidence of Thrips (Thrips Tabacilindman) and Whitefly(Bemisia Tabaci) on BT Cotton

Field experiments were conducted to study effect of different spacing and fertilizer levels on incidence of sucking pest viz. Thrips (Thrips tabaci Lindman) and whitefly (Bemisia tabaci) in Bt cotton. Results indicated that the lowest incidence of Thrips (Thrips tabaci Lindman) was observed in S4 180×30 cm (18518 plants/ha) plant spacing at 30 DAS (3.22). As regards to the fertilizer levels, lowest incidence of thrips was observed under the influence of F1–120: 60: 60 NPK kg/ha at 30 DAS (5.85). Lowest incidence of whitefly (Bemisia tabaci) was recorded under the plant spacing of S5 150×30 cm (22222 plants/ha) plant spacing at 30 DAS (3.54). The effect of fertilizer levels showed that lowest incidence of whitefly was recorded in F1–120: 60: 60 NPK kg/ha. At 30 DAS (6.62).