Nitrate reductase activity of soil influenced by neem (Azadirachta indca L.Juss.) products

Authors

  • Ashok Kumar Singh Department of Soil Science and Agricultural Chemistry Banaras Hindu University, Varanasi-221 005, India Author
  • B.R. Maurya Department of Soil Science and Agricultural Chemistry Banaras Hindu University, Varanasi-221 005, India Author
  • Hanuman Ram Department of Soil Science and Agricultural Chemistry Banaras Hindu University, Varanasi-221 005, India Author
  • Shailesh K. Singh Department of Soil Science and Agricultural Chemistry Banaras Hindu University, Varanasi-221 005, India Author

Keywords:

Nitrate reductase activity, Types of soil, neem products, paddy and wheat

Abstract


A pot culture experiments were studied to evaluate the effect of different neem products and their formulation on change in nitrate reductase activity (NRA) in different submerged and aerobic soil under paddy wheat grown of oxygen unstressed and stressed condition of vertisols, inceptisols and alfisols. The inhibitors used were all the neem-based products viz. neem cake (@20 % w/w of urea, neem oil (@ 1.0 % w/v of urea), Nimco® (@ 2 % w/w of urea) and Neemagold® (@ 1.0 % w/w of urea) respectively to the applied urea. NRA significantly decreased in inhibitors coated treatment samples than the control, but the activity was high in submerged soil than aerobic and decreased in both conditions from tillering to harvesting stage of crop. Neem oil coating of 1 % applied urea to curtail the loss of N due to limits the NRA in all the soil at every stage among the neem products. NR activity was considerably low in Inceptisols than Vertisols and alfisols also.

Downloads

Published

2010-06-16

Issue

Vol. 2 No. 1 (2011): Journal of Progressive Science

Section

Articles