Effect of Various Control Measures on Predator Incidence and Production Performance in Lac Insect...

A field study was conducted in numerous sites in two lac-growing districts in Jharkhand, namely Bokaro and Ranchi, to evaluate the efficacy of various predator control tactics and to see the impact of these measures on the production and profitability of Kusumi lac. T1 (Farmers' practise: no use of nylon net and/or insecticide); T2 (Use of insecticide); T3 (Nylon netting); and T4 (Nylon netting). Twenty lac farmers were divided into four groups: T1 (Farmers' practise: no use of nylon net and/or insecticide); T2 (Use of insecticide); T3 (Nylon netting); and T4 (Nylon netting) (Nylon netting with insecticide application). For data collecting on predator incidence, lac yield, and B:C ratio, Kusumi lac growers were identified. The number of predators/m encrustation for predators such as Eublemma amabilis and Pseudohypatopa pulverea was considerably (p0.05) reduced in T4 following the third pesticide application when compared to T1 (7.5 vs. 22.0 for Eublemma amabilis and 8.0 vs. 41.0 for Pseudohypatopa pulverea). In T4, the total incidence of predators was reduced by 74.5 percent (p0.05) when compared to T1. Lace yield was substantially (p0.05) lower in T1 than in T4 (20.0 kg/5 plants vs. 65.0 kg/5 plants). T4 had a higher B:C ratio than the other treatment groups. The present study found that the usage of nylon netting (60 mesh) combined with three applications of insecticide (Ethofenprox 10 Ec. @ 2 ml/l) was highly successful against the lac's common predator insects and had a substantial impact on the lac's productivity and profitability.

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