MANAGEMENT OF PHYTOPARASITIC NEMATODES ASSOCIATED WITH FRENCH BEAN (Phaseolus vulgaris L.) THROUGH INTERCROPPING PRACTICES

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dc.contributor.advisorSHARMA, G.C.
dc.contributor.authorSANGEETA, KUMARI
dc.date.accessioned2016-12-26T13:12:00Z
dc.date.available2016-12-26T13:12:00Z
dc.date.issued2013
dc.description.abstractABSTRACT The present investigations on “Management of sphytoparasitic nematode associated with French bean (Phaseolus vulgaris L.) through intercropping practices” were carried out in the research farm of Department of Entomology of the university during the year 2011. While estimating the initial nematode status of the experimental field it was found harbouring populations of plant parasitic nematodes viz., Meloidogyne incognita, Helicotylenchus dihystera, Mesocriconema xenoplax, Pratylenchus coffeae and Tylehchorhynchus mashhoodi in the range of 11-585 indiviguals per 200 cc soil. Six antagonistic/non preferable host crops were evaluated for their antinematodal action through their intercropping with French bean which were soybean, sesame, chenopod, bellpepper, maize and marigold.The final nematode population exracted from the field at harvesting of the crop showed predominance of M. incognita, H. dihystera, and M. xenoplax. Excluding soybean, whereas all the intercrops restricted the multiplication rate of M. incognita, maize marigold and sesame did not support the nematode and rather reduced its population by 0.26, 0.61 and 0.68 times.The overall nematode population was also found reduced to the tune of 0.78, 0.85 and 1.53 times in marigold, sesame and maize intercropped French bean rhizosphere, respectively. With highest reduction in root-gall index and overall nematode population, improved yield of 55 and 50 per cent in French bean were recorded from the sesame and chenopod intercropped plots. At 20 per cent concentration, no egg hatching was recorded in any of the root extracts (except for marigold) up to 72 hours exposure. At 10 per cent concentration, root extracts of all the intercrops (except for bellpepper) were effective enough to restrict the egg hatching. At both the concentrations (20 per cent and 10 per cent) of root extracts although, all the intercrops (except for soybean) resulted considerable juvenile mortality (52.23-100 per cent) over control, marigold was most effective. Among ten commercial cultivars of French bean, tested for their reaction (M. incognita), three viz., BS-2, Rajguni and DS-999 showed resistant reaction.en_US
dc.identifier.other47891
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/92881
dc.language.isoenen_US
dc.subEntomologyen_US
dc.these.typeM.Sc
dc.titleMANAGEMENT OF PHYTOPARASITIC NEMATODES ASSOCIATED WITH FRENCH BEAN (Phaseolus vulgaris L.) THROUGH INTERCROPPING PRACTICESen_US
dc.typeThesisen_US
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