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Thangjam, Rojeet
- Predatory Coccinellids of Insect Pests of Assam Lemon (Citrus limon L. Burmf) in Jorhat District of Assam
Abstract Views :380 |
PDF Views:126
Authors
Affiliations
1 Department of Entomology, Assam Agricultural University, Jorhat-785013, Assam, IN
1 Department of Entomology, Assam Agricultural University, Jorhat-785013, Assam, IN
Source
Journal of Biological Control, Vol 30, No 2 (2016), Pagination: 121-123Abstract
The diversity of predatory coccinellids of insect pest of Assam Lemon (Citrus limon L. Burmf) was studied in the citrus orchard of Assam Agricultural University, Jorhat during 2015-2016. Twelve species of coccinellid beetles viz., Coccinella transversalis (Fabricius), Coelophora bowringii (Crotch), Coelophora saucia (Mulsant), Cryptogonus bimaculatus (Kapur), Cryptogonus spp., Cryptolaemus montrouzieri (Mulsant), Harmonia conglobata (Linnaeus), Harmonia dimidiata (Fabricius), Illeis confusa (Timberlake), Propylea spp., Platynaspis kapuri (Chakraborty and Biswas) and Scymnus spp. were recorded feeding on various sucking pests. Among the coccinellids, Coccinella transversalis and Harmonia dimidiata were recorded in maximum number (9.0 and 8.4 per tree respectively) with a relative abundance of 17.79 and 16.60 per cent respectively while Cryptogonus spp. was recorded lowest (0.9 per plant with relative abundance of 01.79 per cent).Keywords
Assam Lemon, Coccinellids, Predators, Diversity, Relative AbundanceFull Text
References
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- Effect of IPM Modules on Major Pests and their Natural Enemies in King Chilli Capsicum Chinense in Northeast India
Abstract Views :103 |
PDF Views:60
Authors
Affiliations
1 College of Horticulture, Central Agricultural University (Imphal), Thenzawl, Mizoram 796186, IN
2 College of PG Studies in Agricultural Sciences, Central Agricultural University (Imphal), Umiam, Meghalaya 793103, IN
3 Department of Entomology, Assam Agricultural University, Jorhat, Assam 785013, IN
4 Department of Plant Pathology, Assam Agricultural University, Jorhat, Assam 785013, IN
5 KVK, Central Agricultural University (Imphal), Andro, Manipur 795049, IN
1 College of Horticulture, Central Agricultural University (Imphal), Thenzawl, Mizoram 796186, IN
2 College of PG Studies in Agricultural Sciences, Central Agricultural University (Imphal), Umiam, Meghalaya 793103, IN
3 Department of Entomology, Assam Agricultural University, Jorhat, Assam 785013, IN
4 Department of Plant Pathology, Assam Agricultural University, Jorhat, Assam 785013, IN
5 KVK, Central Agricultural University (Imphal), Andro, Manipur 795049, IN
Source
Indian Journal of Entomology, Vol 84, No 1 (2022), Pagination: 105-108Abstract
A field experiment to evaluate some IPM modules against major pests viz., Aphis gossypii, Myzus persicae, Bemisia tabaci and their natural enemies viz., coccinellids and spiders occurring in king chilli Capsicum chinense Jacquin was carried out during rabi (2014-16) at Jorhat, Assam. The results revealed that module M2 with seedling root dip treatment with imidacloprid 17.8 SL @ 40g a.i./ ha + growing of border crop (okra)+ spraying of imidacloprid 17.8SL @ 40g a.i./ ha at 20 days after transplanting at 15 days interval is the most effective in suppressing aphids and whitefly followed by lambdacyhalothrin instead of imidacloprid in both the seasons. The insecticidal treatment modules had a significant effect on the pest and the viral diseases, thereby increasing the yield, with maximum yield obtained in module M2 (3564.44 kg/ ha) and with a maximum cost-benefit ratio of 1: 4.85.Keywords
Capsicum chinense, IPM modules, Aphis gossypii, Myzus persicae, Bemisia tabaci, coccinellids, spiders, imidacloprid, lambdacyhalothrin, seed treatment, spray, yield, cost benefits, AssamFull Text
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