Division of Crop Protection
Pollinator Ecology; Fruit Crop Entomology
M. Sc (Ag). Ph. D
(During the Period of 2019-2023)
- A non-chemical management schedule involving entomopathogen, Metarhizium anisopliae (oil formulation @ 0.5ml/L) and azadirachtin was standardized for management of leafhoppers (Idioscopus sp.) on mango and thrips (Scirtothrips dorsalis) on grapes.
- Studies on mango stem borer, Batocera rufomaculata: A simple stem trapping technique was standardised to collect and monitor tree trunk borers. It also helped in capturing and killing the beetles. Borer infestation was studied in relation to spacing and rootstock. Trees of ‘Alphonso’ planted at a closer spacing (3 x 3 m) with Vellaikulamban root stock suffered significantly highest damage (42.5%).
- Developed a product viz., ‘Arka Borer Control’ (ABC) to manage trunk borers especially Batocera rufomaculata on mango
- Developed distribution map of invasive mango fruit borer, Ctripestis eutraphera and also an IPM module to manage the pest. Varietal preference and infestation pattern was also studied.
- Sterile Insect Technique (SIT) for fruit fly management: For the first time studies were taken up in collaboration with BARC, Mumbai and optimized the radiation dose for sterilization. A dose of 50 Gy was found to be optimum while the dose above 60Gy resulted in higher mortality.
- Compatibility of insecticides and fungicides in mango: Through field and laboratory studies, established the physical and chemical compatibility of 6 insecticides with 7 fungicides to manage insect pests and diseases in mango, onion, chillies and tomato.
- Pollinator Studies
- Standardised a technology to use native honey bees (Apis cerana) and stingless bees (Tetragonula iridipennis) for poly-house pollination of cucurbitaceous crops like muskmelon, ridge gourd, cucumbers and watermelon.
- Mass rearing of pollinator: Developed an artificial diet and a protocol for mass multiplication of Chrysomya megacephala, an important pollinator of mango and several other horticultural crops. This technology enables farmers to augment pollinator population in the field during flowering period.
- A simple bottle trap with a semi synthetic diet was developed to augment mango pollinator, Chrysomya megacephala in the field.
- Conducted in depth studies to understand the impact of climate change on pollinators of mango, onion and watermelon. Established the thermal sensitivity of major pollinators and found that Dipteran pollinators like Chrysomya megacephala are more adoptable to temperature variations than bees.
- Documented the pollinator diversity of mango across major mango belts in India. Five species viz., Apis florea, Chrysomya megacephala, Stomorhina discolor, Eristalis arvorum and Tetragonula iridipennis were found to be the major pollinators is different regions. Impact of pollinators on seed and fruit set in mango, onion and watermelon was studied and quantified.
- Impact of elevated temperature and CO2 on the biology and foraging behaviour of pollinators (Apis cerana, Chrysomya megcephala) was studied.
Varieties / Technologies Developed:
- Protocol for pollination of polyhouse grown vegetables using native bees 2.'Arka Borer Control' - a product to manage mango stem borer
(Best 10/High Impact)
- Reddy, P. V. R. 2021. Leafhopper (Idioscopus spp.) excreted honeydew distracts honey bees (Apis spp.) from visiting mango (Mangifera indica L.) flowers: an indirect loss inflicted by the sucking pests hitherto unaccounted. Journal of Apicultural Research. Vol 60. https://doi.org/10.1080/00218839.2021.1987742 (NAAS 8.58)
- Reddy, P. V. R., Todoriki, S., Miyanoshita, A., Imamura, T and Hayashi, T. 2006. Effect of soft electron treatment on adzuki bean weevil, Callosobruchus chinensis (L.) (Coleoptera: Bruchidae). Journal of Applied Entomology, 130 (6-7), 393–399. 9NAAS 8.21)
- Reddy, P. V. R., Varun Rajan, V. and Verghese, A. 2015. A non-meat-based artificial diet and protocol for mass rearing of Chrysomya megacephala (Fab.) (Diptera: Calliphoridae), an important pollinator of mango. Current Science,108 (1) :17-19. 9NAAS 7.10)
- Reddy, P. V. R., Srivastava, K. and Vishalnath. 2016. Litchi fruit borers. Current Science, 110 (5): 758 -759. (NAAS 7.10)
- Vageeshbabu S. H., Reddy, P. V. R., Boopal, K.., Srividya, K. N., Poovarasan, S. and Shraddha, B. 2011. Solanum macrocarpon, a wild brinjal, is not a source of resistance against brinjal shoot and fruit borer, Leucinodes orbonalis Guenee. Current Science, 101, (11): 1427-1429 9 (NAAS 7.17)
- Vinod Kumar, Reddy, P. V. R., Ajit kumar Dubedi Anal and Vishal Nath. 2014. Outbreak of semilooper, Perixera illepidaria (Lepidoptera: Geometridae) - a new record of pest of litchi, Litchi chinensis (Sapindales: Sapindaceae) in India. Florida Entomologist, 97 (1):22-29. (NAAS 7.43)
- Hanur, V. S., Reddy, B., Arya, V. V. and Reddy, P. V. R. 2015. Genetic Transformation of Tomato Using Bt Cry2A Gene and Characterization in Indian Cultivar Arka Vikas. Journal of Agr. Sci. Tech.17: 1805-1814. (NAAS 7.10)
- Reddy P.V.R., and Aswath., C. 2008. Resistance of exotic collections of gerbera (Gerbara jamesonii) against whitefly (Bemesis tabaci) and thrips (Thrips palmi) under polyhouse conditions. Indian Journal of Agricultural Sciences, 78 (5): 449-452( NAAS 6.73)
- Reddy, P.V.R. and Vasugi. C. 2004. Screening of guava germplasm for resistance to tea mosquito bug, Helopeltis antonii Sign. in relation to certain morpho - characters of fruit. Indian Journal of Agricultural Sciences, 74 (2): 1-4 9 (NAAS 6.37)
- Srivastava, K., Kumar, A., Pandey, S., Reddy, P. V. R. and Vishal Nath. 2017. Integrated management of litchi fruit and shoot borer (Conopomorpha sinensis) using insect growth regulators under subtropics of Bihar. Indian Journal of Agricultural Sciences 87 (11): 1515–8 (NAAS 6.37)
- Reddy, P. V. R., Mani. M. and Rashmi, M. A. 2022. Pests and Their Management in Mango. In: Mani. M (eds).Trends in Horticultural Entomology. Springer Nature . ISBN: 978-981-19-0342-7
Awards & Recognitions:
- Fellow of Royal Entomological Society, London, UK
- United Nations University (UNU)-Kirin Fellowship, Tokyo, Japan
- Dr. Anand Prakash award – 2021 by Applied Zoologists Research Association (AZRA), Bhubaneswar
- Dr. B. Vasantharaj David Outstanding award – 2019
Address for Communication:
16 Sreevihar, Narayanappa Layout, Nagashetty halli, RMV II Stage, Bangalore-94
080-23086100 Extn 340