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Bangalore, India

Sakthivel N.,Central Sericultural Research and Training Institute | Qadri S.M.H.,NBAII
Indian Silk | Year: 2010

A survey revealed the incidence of papaya mealyug infestation in tapioca, the primary food plant of en silkworm in Namakkal, Salem, and Dharmapuri districts of Tamil Nadu, India. The highest infestation of 70% of garden surveyed during September-October, 2009, was recorded in Namakkal district followed by 43.3% in Salem, and 36.6% in Dharmapuri. The infestation was observed as clusters of cotton like masses on whole length of green and tender stem and veins of tapioca leaves as the insects settled in mass and secrete a white waxy coat over the body. Another study was conducted to find out the incidence of papaya mealybug in different ruling varieties of tapioca cultivated in Namakkal district and foliage loss revealed that MVD-1 among the different varieties was highly susceptible and recorded high leaf loss. One of the control measures included transporting papaya mealybug infested tapioca stems without treatment for seed cutting needed to be avoided. Source

Qadri S.M.H.,Central Sericultural Research and Training Institute | Rabindra R.J.,NBAII | Shekhar M.A.,Central Sericultural Research and Training Institute | Shylesha A.N.,NBAII
Indian Silk | Year: 2010

The scientists of Central Silk Board, the Departments of Sericulture, Tamil Nadu Agriculture University, Coimbatore, and National Bureau of Agriculturally Important Insects, conducted joint studies to investigate the causes and extent of damage to mulberry plantation from papaya mealybug infestation. The researchers decided to conduct intensive awareness programs to educate the farmers about this pest and its control measures, as a joint effort of different related departments of the government was essential. A modified IPM was adopted in the infested mulberry gardens for management of papaya mealybug. It was proposed to conduct a detailed study of the pest to investigate its biology, mode of infestation, damage caused by it, and develop an IPM package, as the pest was new to India and no information was available for its management under the prevailing conditions. Source

Vasanthi P.,Government Science College | Raviprasad T.N.,DCR ICAR | Nagesh M.,NBAII | Nikhita K.,NBAII
Journal of Biopesticides | Year: 2014

A Survey was conducted in the cashew plantations of the Directorate of Cashew Research and Karnataka Cashew Development Corporation at Puttur, Karnataka to observe the presence of entomopathogenic nematodes and fungi which could be potent natural enemies of cashew stem and root borer, Plocaederus species. Entomopathogenic nematodes were obtained by baiting them from soil samples using Galleria mellonella larvae. Out of the 110 soil samples collected from various cashew plantations, 10 soil samples indicated the existence of nematodes, which was noticed by the mortality of wax moth larvae due to infection. These entomopathogenic nematodes were identified by utilizing currently available molecular tools, four isolates matched with Heterorhabditis bacteriophora and two with Steinernema abbasi. The results revealed that, field collected fungus, was pathogenic to laboratory reared larvae of cashew stem and root borers and was identified as Metarhizium anisopliae (Metsh). © 2014, JBiopest. All rights reserved. Source

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