Author(s):

DS Masolkar, RW Gawande, Puja G Chandrawanshi and SS Shinde

Abstract: Wheat (Triticum aestivum.) is nutritionally important cereal crop and comprises major source of protein with minerals and vitamins. In Maharashtra, it is grown in rabi season. Trogoderma granarium is one of the most important and destructive pest of various stored cereals grains in India including wheat. The khapra beetle is not only causing quantitative losses but also cause qualitative losses in nutrition that makes most cereals unfit for marketing as well as human consumption. Utilization of insecticides is one of the important components of IPM programmes. Insecticides targeted against insect pest in field conditions and also damage the beneficial fauna in nature. Due to their several drawbacks, researchers are trying to adopt alternative methods of pest control. (Mahmud et al. 2002). Laboratory experiment was conducted to study “Management of khapra beetle on stored wheat with organic products” at Insectory Field laboratory of Entomology Section, College of Agriculture, Nagpur during 2016-2017 with the two plant powders i.e., black pepper powder, vekhand powder @ 10 g/kg seeds and five vegetable oils i.e., Neem oil, castor oil, mustard oil, karanj oil and coconut oil @ 10ml/kg seeds tested till120 days of storage against khapra beetle (Trogoderma granarium) infesting stored wheat seeds. The observations on 100 seeds at 30, 60, 90 and 120 days on oviposition, adult emergence, grain damage, grain weight loss and per cent germination due to infestation of Trogoderma granarium were recorded. Considering the parameters like oviposition, adult emergence, seed damage, seed weight loss and per cent seed germination and ICBR, neem oil @ 10 ml/kg, found effective treatments against dermestid, Trogoderma granarium infesting wheat in storage. The findings of the present investigation indicated that organic derivatives might be useful as insect control agent for commercial use. On the basis of interpretation of data it can be concluded that, without wheat seed treatment the insect species Trogoderma granarium causes maximum damage to the extent of Rs. 519.30 during the storage at 120 days as against the organic seed treatment neem oil @ 10 ml/kg seed incurred expenditure Rs. 194.71 towards seed protectant. And hence it is advised for seed treatments.

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