Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Soil microbial population as affected by different legume crops
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Total bacterial
count (x 104 g-1
of soil)
Rhizobium
count (x 104 of
soil)
azotobacter
count (x 104 g-1
of soil)
Actinomycetes
(X 104 g-1 of
soil)
fungal count (x
104*cfu g-1of
soil)
Initial Cowpea Fieldbean Greengram
Soil microbial population as influenced by different types of legume crops
Soil incorporation of legume crop residues has further improved the microbial population by two
folds during first year. The maximum number of bacteria and 352 X 10 4 g -1 ) was noticed with
incorporation of cowpea residues as depicted in the figure below. The improvement in soil
microbial population might be due to the addition of all the residues which might have added a
fair quantity of organic matter to the soil which inturn acted as a substrate for the multiplication
and development of microbes either over the initial or against the residue removal during both
the years.
Soil microbial population as influenced by residue management practices
The decreasing in trend in the entire micro flora was noticed after the harvest of rabi maize
during both the years by maintaining more or less similar trend as that was observed in the initial
as well as at the end of harvest of kharif crops. Increase in microbial population was seen with
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
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