Thrips (Scirtrothrips dorsalis Hood) and Helicoverpa armigera (Hubner) are the major pests contributing for reduction in yield potentiality. Damage due to thrips and borer may be up to 75-100 and 50-75 percent respectively. Exorbitant use of insecticide to manage the target pests with indiscreminate application of insecticides has led to the development of resistance in India. The potentiality of pre-mixes of insecticides in terminating the resistance is well known. Hence, attempt was made in a organised coconut orchard at  Gangetic alluvial plains at West Bengal India, during the 2011-12 to reveal the bio-efficacy of pre-mixture of indoxacarb 14.5 + acetamiprid 7.7 SC (RIL-042 222 SC) against thrips and fruit borer. RIL-042 222 SC @ 500 and  400 ml/ha were significantly superior in reducing the incidence of  thrips and fruit damage by borer in both the seasons followed by acetamiprid 20 SP @ 200 g/ha. The treatment with 500 ml/ha registered highest green chilli yield (49.6 and 49.53 q/ha, respectively). The result from the present experiments revealed that the ready mix combination of indoxacarb 14.5 + acetamiprid 7.7 SC (RIL-042 222 SC) was very effective for the management of pest of chilli thrips and fruit borer.Natural enemies remained unaffected in the treated plots at varying dosages and the pre-mix did not cause any phytotoxic symptoms even after 15 days of application.References:Singhal, V., 2003, Chillies. In Indian Agriculture 2003, Indian Economic Data Research Centre, Mayapuri, New Delhi, pp. 565-570.

Bio effectiveness of pre-mix formulation of indoxacarb 14.5 + acetamiprid 7.7 SC (RIL-042 222 SC) against thrips and fruit borer on chilli in coconut-based intercropping ecosystem

248th National Meeting (2014)

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