International Journal of Agriculture, Environment and Biotechnology
  • Year: 2015
  • Volume: 8
  • Issue: 2

Effect of moisture regimes and pesticides of different biodegradability on transformation of different forms of inorganic and organic N in a dominant soil series of West Bengal

1Office of the Assistant Director of Agriculture, Bankura, Government of West Bengal, India

2Department of Soil Science and Agricultural Chemistry, College of Agriculture, Tripura, India

3Department of Soil Science & Agricultural Chemistry, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, India

*Corresponding author: nilupaul82@rediffmail.com

Online published on 6 August, 2015.

Abstract

A laboratory experiment was conducted to study the effect of pesticides of different biodegradability on changes in inorganic and organic forms of N in soil maintained under two different moisture regimes. Results revealed that irrespective of pesticides and N treatment, comparatively higher amount of available N is recorded in waterlogged then the soil kept at 60% MHC. Addition of pesticides at lower dose affects the transformation process of organic N in soil. Irrespective of pesticide treatment, in general, hydrolysable NH4 + -N decreased but on the other hand amino acid N increased in soil. Again, the intensity of decrease or increase is more in waterlogged than the soil maintained under 60% of the MHC.

The changes in different N forms in comparison to different moisture regimes in soil.

Affectivity of pesticides on different N forms is evaluated in both waterlogged and 60% MHC conditions.

Keywords

Moisture regimes, pesticides, hydrolysable NH4+ -N and amino acid N