15 Dec Neem biopesticides: well suited for integrated pest management
नीम के बायोपेस्टीसाइड: एकीकृत कीट प्रबंधन के लिए उपयुक्त जैव कीटनाशक Continuous and excessive use of chemical pesticides over a period of time has resulted in serious problems such as development of insect resistance, insecticide-induced resurgence of insect-pests, toxicity to non-target organisms and also to human beings. Now there is an urgent need to evolve an alternate coherent pest management programme, which is effective and environment friendly. It would be appropriate to identify chemicals, which render crop plants unattractive or unpalatable for feeding by insect-pests, and at the same time are fully biodegradable. Several plant products possess the property of making crop foliage unattractive for feeding, and hence, form an important component of the current strategy of pest control called “Integrated Pest Management (IPM)”. It involves planned execution of combination of different pest management practices, including cultural control, use of resistant varieties, biological control, use of synthetic chemicals, whenever necessary, use of pheromones, use of botanical products such as those derived from neem. Making Neem water extract At first collection of ripe fruits placing a net below the neem tree. Fruits are dissolved in water and pressure is given by hands. In this way seeds are separated. Then seeds are collected from it and sun dried and if it is rainy season a machine is used for...