SOIL BIOLOGICAL ENVIRONMENT AS AFFECTED BY RESIDUE INCORPORATION
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Date
2013
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Birsa Agricultural University, Kanke, Ranchi, Jharkhand
Abstract
Continuous cropping without application of adequate quantity of
nutrients in balanced doses or without addition of organics leads to loss of soil
productivity. For restoration of soil productivity there is an urgent need to look
forward to other options of plant nutrient supply besides the use of chemical
fertilizers. Continuous recycling of crop residues with chemical fertilizers
restores the organic matter content. Precise information on the long term effect
of recycling of crop residues along with chemical fertilizers on an acid loam
soil under climatic condition of Ranchi is needed for enhancing the nutrient
availability of soil.
Field experiment conducted during 2012-2013 revealed that in situ
incorporation of crop residues significantly increased the grain and straw yield
of groundnut and wheat grown in sequence. The highest crop yield and nutrient
uptake were recorded in the plot receiving 100% NPK + crop residue.
Incorporation of crop residue enhance the available nutrients status of soil
microbial biomass and enzymatic activity and thus helped to sustain soil health
with increased crop productivity. Continuous incorporation of crop residue @
5 ton/ha along with recommended dose of fertilizer recorded higher grain yield
of both the crop as well as favourable condition for soil properties.
It is conducted that (i) It significant increased organic carbon content,
microbial, microbial population. (ii) In situ incorporation of crop residues
significantly increased the crop yield and nutrient uptake as well as improved
the soil physical, chemical and biological environment.
Description
SOIL BIOLOGICAL ENVIRONMENT AS AFFECTED BY RESIDUE INCORPORATION
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