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Patil, Jagadeesh
- Compatibility of Steinernema carpocapsae and Heterorhabditis indica with Insecticides Registered against Helicoverpa armigera (Lepidoptera:Noctuidae)
Authors
1 Indian Institute of Pulses Research, Kanpur – 208024, Uttar Pradesh, IN
2 National Bureau of Agricultural Insect Resources, Bengaluru – 560024, Karnataka, IN
3 Indian Institute of Vegetable Research, Varanasi – 221305, Uttar Pradesh, IN
Source
Journal of Biological Control, Vol 31, No 2 (2017), Pagination: 95-101Abstract
The gram pod borer, Helicoverpa armigera (Lepidoptera: Noctuidae) is considered as a key pest of pigeonpea and is also a major polyphagous pest of several agricultural and horticultural crops in India. Combining chemical insecticides with Entomopathogenic Nematodes (EPNs) could be an effective alternative to reduce the use of harmful chemicals. Experiments were conducted to determine the compatibility of Steinernema carpocapsae and Heterorhabditis indica with registered insecticides used for H. armigera control in pigeon pea, under laboratory conditions. Compatibility of the insecticides with EPNs was evaluated by observing infective juveniles (IJs) survival and virulence of Galleria mellonella at 24 and 48 h after dipping in insecticide solutions. It was observed that, insecticides showed moderate effect on IJs survival. IJs were able to infect G. mellonella larvae after exposure to these chemicals, but their progeny production was significantly (P < 0.05) reduced. Both nematode species showed differential sensitivity to the tested insecticides, with H. indica exhibiting better tolerance than S. carpocapsae. The studies revealed that the chemicals showed a strong sub lethal effect on the nematode reproductive potential, limiting seriously their possible recycling in the field.Keywords
Compatibility, Galleria mellonella, Helicoverpa armigera, Heterorhabditis indica, Steinernema carpocapsae.References
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- Invasion of Fall Armyworm (Spodoptera frugiperda) in India: Nature, Distribution, Management and Potential Impact
Authors
1 ICAR-Indian Institute of Maize Research, Punjab Agricultural University Campus, Ludhiana 141 004, IN
2 ICAR-National Bureau of Agricultural Insect Resources, Bengaluru 560 024, IN
3 ICAR-Indian Institute of Millets Research, Hyderabad 500 030, IN
4 DBT-National Institute of Plant Genome Research, New Delhi 110 067, IN
5 ICAR-Indian Agricultural Research Institute, New Delhi 110 012, IN
Source
Current Science, Vol 119, No 1 (2020), Pagination: 44-51Abstract
Fall armyworm (FAW; Spodoptera frugiperda (J. E. Smith)) is emerging as the most destructive pest of maize in India since its report in May 2018. Its rapid spread to more than 90% of maize-growing areas of diverse agro-ecologies of India within a span of 16 months presents a major challenge to smallholder maize farmers, maize-based industry, as well as food and nutritional security. FAW has been reported from other crops as well like sorghum and millets with varied proportion of economic damage. In this review, the transboundary movement of FAW, role of ecology, its spread and damage are discussed. Management of FAW by developing and deploying various pest management tools is elaborated. The role of agro-ecological measures for reducing FAW damage with African experiences has also been highlighted.Keywords
Agro-Ecology, Fall Armyworm, Host Plant Resistance, Integrated Pest Management, Transgenics.- Management of white grub, Holotrichia consanguinea (Blanchard) using biocontrol agents in sugarcane in coastal Andhra Pradesh
Authors
1 ICAR-National Bureau of Agricultural Insect Resources, H.A. Farm Post, Bellary Road, Hebbal, Bengaluru, Karnataka, IN
2 Regional Agricultural Research Station, ANGRAU, Anakapalli, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 34, No 4 (2020), Pagination: 288-297Abstract
White grubs are one of the major pests of sugarcane crop in coastal Andhra Pradesh, India. The present study was taken up to assess the efficacy of biocontrol agents viz., entomopathogenic fungi and entomopathogenic nematodes for management of white grub, Holotrichia consanguinea in sugarcane ecosystem during 2015-16 and 2016-17. Two entomopathogenic fungi, Metarhizium anisopliae (NBAIR Ma4 strain) and Beauveria bassiana (NBAIR Bb5a), two entomopathogenic nematodes (Heterorhabditis indica NBAIR-H38 and Steinernema carpocapsae NBAII Sc 05), Neem cake, Phorate 10G were evaluated through soil application as different treatments in white grub infested sugarcane field in coastal Andhra Pradesh for two seasons during 2015 and 2016-17. All biocontrol agent treatments were better than the insecticidal/neem cake application in the management of sugarcane white grubs.However, based on cost benefit ratio of the treatments, soil application of M. anisopliae @ 2.5 kg along with 250 kg farm yard manure per hectare (twice application in July and August) proved superior to other biocontrol agent treatments. Soil application of biocontrol agents, Phorate and Neem cake did not show anydeleterious effect on non-target organisms like, earthworms, earwigs, spiders, coccinellids and chrysopids.
Keywords
Biocontrol agents, Holotrichia consanguinea, sugarcane, white grubsReferences
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