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Relative efficacy of on-farm weeds as soil-amendment for managing dry root rot of clusterbean in an arid environment

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Title Relative efficacy of on-farm weeds as soil-amendment for managing dry root rot of clusterbean in an arid environment
Not Available
 
Creator Mawar Ritu
Lodha Satish
 
Subject Macrophomina phaseolina, Aerva persica, Celosia argentea, Polycarpaea corymbosa, Euphorbia hirta.
 
Description Not Available
The effectiveness of certain on-farm weeds as soil amendments was ascertained against Macrophomina
phaseolina, a soil-borne pathogen causing dry root rot of crops grown under rainfed conditions in arid regions. Populationchanges in M. phaseolina were determined in soils amended separately with residues (1%, w:w) of Aervapersica, Celosia argentea, Corchorus depressus, Euphorbia hirta, Heliotropium subulatum and Polycarpaea corymbosa,
for a period of 90 days. Significant reductions by 90.4–100% in the population of M. phaseolina were achieved with allthe weed residues except P. corymbosa. Celosia and Euphorbia residues completely eradicated viable propagules of M. phaseolina. A strong increase (44–61%) in the population of antagonistic actinomycetes was also found in soil amended with Corchorus and Euphorbia. In field tests, soil amended (50 g m2) with Euphorbia, Aerva and Celosiaresidues significantly reduced dry root rot incidence on clusterbean and also reduced M. phaseolina propagules in thesoil. However, dry root rot incidence in Polycarpaea-amended soil (5.8–24.6%) was not significantly different fromthat in non-amended soil (4.3–25.3%) in both years of the experiment. P. corymbosa also increased the number ofpropagules of M. phaseolina in the soil. The results demonstrate that dry root rot of rainfed-cultivated annual cropsin arid land can be managed with certain weeds as a soil amendment.
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Date 2019-07-26T05:17:55Z
2019-07-26T05:17:55Z
2006-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/21715
 
Language English
 
Relation Not Available;
 
Publisher Not Available