EVALUATION OF SOME IPM MODULES AGAINST INSECT PESTS OF CHILLI

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dc.contributor.advisorRajkumari, Prarthna
dc.contributor.authorBorgohain, Arundhati
dc.date.accessioned2024-06-29T12:49:46Z
dc.date.available2024-06-29T12:49:46Z
dc.date.issued2023
dc.description.abstractChilli (Capsicum annuum L.) is a crucial vegetable crop and spice in India which is valued for its colour (capsanthin) and pungency (capsaicin). In India, chilli cultivation faces several challenges, including biotic and abiotic factors which affect its yield. Insect pests such as aphid, thrips, fruit borer, leafhopper and whitefly cause substantial damages leading to yield losses of 50 to 90 percent. Indiscriminate use of pesticides in India has led to increased cultivation costs, destruction of natural enemies, while increase in pesticide residues raises concerns for exports. To address these issues sustainably, non-chemical pest management techniques are necessary. Integrated pest management (IPM), employing bio-controls and newer generation insecticides, is recommended as an alternative to conventional pesticides. This approach can effectively control pests, minimize negative impacts, and ensure the production of healthy and nutritious chilli crops. In this investigation, evaluation was done on 8 different integrated pest management modules against insect pests of chilli in Randomised Block Design with 3 replications. The experiment was conducted in the experimental farm for PG research, Biswanath College of Agriculture, Sonitpur during rabi season of 2022-2023. Four sucking pests viz., aphid, Aphis gossypii; thrips, Scirtothrips dorsalis Hood; whitefly ,Bemisia tabaci; leafhopper, Amrasca biguttula biguttula and a fruit borer, Helicoverpa armigera were found infesting the chilli crop. The treatments were applied at different intervals according to its recommendation. It was observed that M4 treatment containing mulching (polyethene) + marigold trap crop + neem cake @ 250kg/ha was found the most effective in controlling thrips, whitefly and fruit borer. M6 seed treatment with Imidacloprid 70% WS at 3 g/kg of seed + foliar application of neem oil @3ml/l was the most effective against aphids, Aphis gossypi. The highest number of coccinelids i.e., natural enemies were found in M8 untreated control and lowest was found in M4. Lowest leafhopper population was recorded in M3 consisting of neem oil 3ml/l + reflecting mulch. All of the treatment modules showed reduction in pest population during the weeks of observation over control. The highest yield was recorded in M4 (yield- 64.80q/ha, B:C ratio- 2.36) and was found to be the most effective module. Standard meteorological correlation with insect pests showed significant negative correlation with minimum temperature, bright sunshine hours and relative humidity in some insects. As we seek into the future aspects we can say that pest management modules prioritize the long-term health of agricultural ecosystems and can help achieve consistent, long-term pest suppression and increased yield.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810211188
dc.language.isoEnglish
dc.subAgricultural Entomology
dc.themeEVALUATION OF SOME IPM MODULES AGAINST INSECT PESTS OF CHILLI
dc.these.typeM.Sc
dc.titleEVALUATION OF SOME IPM MODULES AGAINST INSECT PESTS OF CHILLI
dc.typeThesis
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