Population Densities of Plant-Parasitic Nematodes in Multiple-Cropping and Tillage Systems
نویسندگان
چکیده
Hairy vetch (Vicia sativa L.) succeeded by corn (Zea mays L.)or grain sorghum (Sorghumbicolor L. Moench) were seeded insplit plots randomized within whole plots of no-tillage versus conventional tillage over four growing seasons (1980-83). The vetch-corn cropping system increased the density of Meloidogyne incognita 2.9 X more than the vetch-grain sorghum cropping system. I n contrast, the vetch-grain sorghum croppingsystem increaseddensity of Criconemellaornata 0.7 X more than the vetch-corn cropping system. Meloidogyne incogni ta and C. ornata were affected more by these cropping systems than were Pratylenchus hrachyurus or Paratrichordorus minor. Multiple cropping systems, and crop host preference affected nematode popula tion densities, whereas tillage treatments, conventional or no-tillage, had little effect on them.
منابع مشابه
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