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Mahal, M. S.
- Diversity of Natural Enemy Fauna in Rice Ecosystem in Relation to Different Levels of Nitrogen
Abstract Views :202 |
PDF Views:115
Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Punjab, Ludhiana -141004, IN
2 Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Punjab, Ludhiana-141004, IN
3 Division of Entomology, Indian Agricultural Research Institute, New Delhi -110012, IN
1 Department of Entomology, Punjab Agricultural University, Punjab, Ludhiana -141004, IN
2 Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Punjab, Ludhiana-141004, IN
3 Division of Entomology, Indian Agricultural Research Institute, New Delhi -110012, IN
Source
Journal of Biological Control, Vol 22, No 1 (2008), Pagination: 125-130Abstract
Effect of nitrogen levels on the natural enemy fauna on rice variety PR118 was studied at Balloke village (Dist. Ludhiana) during kharif 2005 and 2006. The mean per cent populations of insect predators and parasitoids were higher at 103.69kg N ha−1 (225kg urea), whereas spider fauna was more abundant at higher dose of nitrogen (172.81kg N ha−1: 375kg urea). During 2005 and 2006, the overall diversity index in the crop season was higher (2.162 and 1.948, respectively) when higher dose of N was applied (172.81kg N ha−1).Keywords
Diversity, Insect Predators, Parasitoids, Nitrogen Level, Rice, Spider.- Integration of Chemical and Biocontrol Approaches for the Management of Leaffolder, Cnaphalocrocis medinalis Guenee and Stem Borer, Scirpophaga incertulas Walker on Basmati Rice
Abstract Views :224 |
PDF Views:119
Authors
Affiliations
1 Department Of Entomology, Punjab Agricultural University, Ludhiana, 141 004, Punjab, IN
1 Department Of Entomology, Punjab Agricultural University, Ludhiana, 141 004, Punjab, IN