tailieunhanh - Evaluation of effect of different nitrogen sources on major insect pests infesting okra, Abelmoschus Esculentus (L.) Moench. under semi arid region of Rajasthan, India

Investigations on evaluation of effect of different nitrogen sources on major insect pests infesting okra was carried out at the Department of Entomology, Rajasthan Agricultural Research Institute, Durgapura, Jaipur during kharif 2016 and 2017. The major insect pests infesting okra observed during two consecutive seasons were leaf hopper, A. biguttula biguttula; whitefly, B. tabaci and okra shoot and fruit borer and E. vittella. Different sources of nitrogen were applied as different treatments to the okra crop. The fertilizers applied were urea, vermicompost and farm yard manure and their different combinations. Maximum nitrogen content in leaf of okra was observed in treatment where, 75 percent nitrogen was applied through urea and 25 per cent was applied through vermicompost. Maximum population of leaf hopper and whitefly was observed in treatment where, all the nitrogen was applied through urea ( & per plant) and minimum population was recorded from treatment where, all the nitrogen was applied through vermicompost ( and per plant). Maximum fruit infestation was recorded in treatment, where all the nitrogen was applied through urea . (on number basis) and (on weight basis). | Evaluation of effect of different nitrogen sources on major insect pests infesting okra, Abelmoschus Esculentus (L.) Moench. under semi arid region of Rajasthan, India

• Sinh học
• Different nitrogen sources
• Nitrogen sources on major
• Insect pests
• Nitrogen levels
• Vermicompost and farm yard manure
• Abelmoschus Esculentus L
• Grain yield
• Straw yield
• Nitrogen on growth of barley
• Yield of barley
• Different sources of nitrogen
• Response of chilli
• Chilli (Capsicum annuum L )
• Combination of nitrogen
• Inorganic sources
• Nitrogen received
• Planting density
• Different planting density
• Inorganic sources of nitrogen
• Growth and yield of pearlmillet
• Yield of pearlmillet
• Poly β hydroxybutyric acid
• Nitrogen sources
• Streptomyces species
• Synthesized PHB
• Streptomyces halstedii
• Sheath blight
• Rhizoctonia solani
• Calcium pentothenate
• Nitrogen and vitamins
• Sources of carbon
• Sclerotia formation as well
• Bio fertilizer
• Integrated nutrient management
• Direct seeded rice
• Rice (Oryza sativa)
• Combination of nitrogen sources
• Banded leaf and sheath blight
• Pseudomonas fluorescens
• Bio control
• Polymer coated urea (PCU)
• Normal urea
• Slow releasing fertilizer
• Rice (Oryza sativa L )
• Growth and yield of rice
• Nitrogen application on growth
• Agricultural science
• Water requirements
• Planting date
• Mineral and organic nitrogen fertilization
• Essential oil and oil yield
• Carbon sources
• Temperatures and pH
• Czapex’sdox agar
• Cyamopsidis (Rang and Rao)
• Poly β hydroxybutyrate
• Rhizobium japonicum
• Different carbon
• Bradyrhizobium japonicum USDA 110
• Randomized block design
• Gross returns
• Net returns
• Neem coated urea
• Neem coated urea + nitrification inhibitor
• Rice straw compost
• Polymer coated urea
• Wheat (Triticum aestivum L )
• Growth and yield of wheat