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Plant growth promoting bacteria from cow dung based biodynamic preparations

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Title Plant growth promoting bacteria from cow dung based biodynamic preparations
 
Creator T.K. Radha
D.L.N. Rao
 
Subject Bacillus spp. Biofertilizer BD500 Cow pat pit Fermentation Lysinibacillus sp. Panchagavya
 
Description Not Available
Indigenous formulations based on cow dung fermentation are commonly used in organic farming. Three biodynamic preparations viz., Panchagavya (PG), BD500 and ‘Cow pat pit’ (CPP) showed high counts of lactobacilli (109 ml-1) and yeasts (104 ml-1). Actinomycetes werepresent only in CPP (104 ml-1) and absent in the other two. Seven bacterial isolates from these ferments were identified by a polyphasic approach: Bacillus safensis (PG1), Bacillus cereus (PG2, PG4 PG5), Bacillus subtilis (BD2) Lysinibacillus xylanilyticus (BD3) and Bacillus licheniformis (CPP1). This is the first report of L. xylanilyticus and B. licheniformis in biodynamic preparations. Only three carbon sources—dextrose, sucrose and trehalose out of 21 tested were utilized by all the bacteria. None could utilizearabinose, dulcitol, galactose, inositol, inulin, melibiose,raffinose, rhamnose and sorbitol. All the strains producedindole acetic acid (1.8–3.7 lg ml-1 culture filtrate) and ammonia. None could fix nitrogen; but all except B. safensis and B. licheniformis could solubilize phosphorous from
insoluble tri-calcium phosphate. All the strains except L. xylaniliticus exhibited antagonism to the plant pathogen Rhizoctonia bataticola whereas none could inhibit Sclerotium rolfsi. In green house experiment in soil microcosms, bacterial inoculation significantly promoted growth of maize; plant dry weight increased by *21 % due to inoculation with B. cereus (PG2). Results provide a basis forunderstanding the beneficial effects of biodynamic preparations and industrial deployment of the strains
Not Available
 
Date 2019-10-19T09:32:26Z
2019-10-19T09:32:26Z
2014-05-14
 
Type Article
 
Identifier Not Available
10.1007/s12088-014-0468-6
http://krishi.icar.gov.in/jspui/handle/123456789/23655
 
Language English
 
Relation Not Available;
 
Publisher Not Available