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Conservation and sustainable management of beneficial microorganisms in cropped ecosystem of western ghats region

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Title Conservation and sustainable management of beneficial microorganisms in cropped ecosystem of western ghats region
 
Creator M, Raghavendrakumar
 
Contributor A. N, Balakrishna
 
Subject farmyard manure, fungi, enzymes, fertilizers, planting, biomass, organic fertilizers, application methods, azotobacter, nitrogen
 
Description Field experiments were conducted in Kuthi village of Somvarpet taluk in
Coorg district of Karnataka to conserve and manage the beneficial
microorganisms through amendment of soil with organic and inorganic
fertilizers and by inoculating the proven microbial inoculants and indigenous
beneficial microorganisms into the rhizosphere of coffee and chilli. In coffee
plantations, application of farmyard manure and inorganic fertilizers along
with microbial consortium consting of seven different indigenous arbuscular
mycorrhizal (AM) fungi, N-fixing and PO4-solubilizing bacteria Azotobacter
chroococcum and Pseudomonas sp. respectively, resulted in significantly higher
mycorrhizal spore density, abundance of A. chroococcum and Pseudomonas sp.
in the rhizosphere soils of coffee plants. The soil enzyme activities such as
dehydrogenases, acid phosphatases, alkaline phosphatases, ureases and soil
microbial properties such as soil microbial biomass-C, N, P and glomalin
content were also significantly higher. The soil N, P and K recorded were higher
compared to other treatments. The application of inorganic fertilizers alone had
deleterious effects but along with organic manures nullified the effects of
inorganic fertilizers. Similar results were also observed with chilli crop due to
amendment of soil with both organic and inorganic fertilizers along with the
microbial consortia containing either indigenous or proven cultures of AM
fungi, N-fixing and PO4-solubilizers. But, application of only inorganic fertilizers
significantly reduced the proven as well as the indigenous mycorrhizal fungi.
There was significant increase in the indigenous population of Azotobacter
chroococcum in all the treatments compared to the proven A. chroococcum. The
PO4-solubilizers, both indigenous and proven species showed significant
increase due to the application of farmyard manure compared to the other
treatments. The application of farmyard manure and inoculation of benificial
microorganisms recorded higher soil biochemical properties and microbial
properties.
 
Date 2016-05-19T13:33:13Z
2016-05-19T13:33:13Z
2013-04-02
 
Type Thesis
 
Identifier Th-10454
http://krishikosh.egranth.ac.in/handle/1/66132
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru