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 |
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Creator |
Mawar Ritu
Lodha Satish |
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Subject |
Macrophomina phaseolina, Aerva persica, Celosia argentea, Polycarpaea corymbosa, Euphorbia hirta.
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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. Not Available |
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Date |
2019-07-26T05:17:55Z
2019-07-26T05:17:55Z 2006-01-01 |
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Type |
Research Paper
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Identifier |
Not Available
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/21715 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Not Available
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