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RELATIONSHIP OF NEMATODES TO YIELD OF MAIZE GROWN UNDER DIFFERENT CULTIVATION REGIMES

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dc.contributor.author MAHFOUZ M
dc.contributor.author ABD-ELGAWAD
dc.date.accessioned 2023-03-06T07:33:07Z
dc.date.available 2023-03-06T07:33:07Z
dc.date.issued 1990-07-11
dc.identifier.citation Abd-Elgawad, M. M. (1990). Relationship of nematodes to yield of maize grown under different cultivation regimes. Pakistan Journal of Nematology, 8(2), 117-125. en_US
dc.identifier.issn 0255-7576
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/17609
dc.description.abstract Relationships between population densities of different nematode species at harvest and yield of maize were examined for 4 cropping sequences on sandy loam soil in Ismailia, Egypt. Correlations calculated between the total plant-parasitic nematode population densities and yield were not significant for individual cropping sequences tested; whereas among the individual genera, population densities of Helicotylenchus pseudorobustus only had significant (P=0.05) negative correlation with yield in two cropping sequences. Log-transformed nematode densities, however, revealed additional negative correlation between maize yield and density of Heterodera zeae. The general relationship was described by Y = 409.1283 - 1.2113 X1 - -0.7330 X2 + 0.2430 X3 + 0.2429X4 where Y = yield or ear weight (g/plant), X1, X2, X3 and X4 nematode population densities of Helicotylenchus pseudorobustus, Heterodera zeae juveniles, Pratylenchus brachyurus and Tylenchorhynchus latusper 100 cm3 soil at harvest; respectively (P = 0.0628). Accordingly, maize yield loss estimate caused by the nematodes was 63 g/plant. At harvest, no significant correlations were found between population densities of the different nematode species in each site including a cropping sequence. Yield components of individual maize cv. Giza 2 plants were more than that produced by cv. Double hybrid 202. en_US
dc.language.iso en en_US
dc.publisher Karachi, National Nematological Research Centre (NNRC), University of Karachi, en_US
dc.title RELATIONSHIP OF NEMATODES TO YIELD OF MAIZE GROWN UNDER DIFFERENT CULTIVATION REGIMES en_US
dc.type Article en_US


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