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Relative Tolerance of Selected Soybean Cultivars to Hoplolaimus columbus and Possible Effects of Soil Temperature.

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Journal of nematology

ecology, infectivity, reproduction, tolerant

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      Abstract

      Eleven soybean [Glycine max (L.) Merr.] cultivars resistant to one or more plant-parasitic nematodes, and one resistant to the Mexican bean beetle (Epilachna varivestis Muls.), were tested for susceptibility to Hoplolaimus columbus. All cultivars were parasitized, but nematode reproduction varied. 'Pickett-71' was the most susceptible host among the cultivars tested. 'Dyer' and three 'P.I. cultivars' were most tolerant when yield /plant and total yield were compared for fumigated and unfumigated plots, even though their yield potential was low. 'Hardee,' 'Coker 4504,' 'W-4,' 'D71-9257,' and 'ED-371' appeared tolerant throughout the growing season and yielded well in unfumigated soil. Infection and reproduction of H. columbus in 'Forrest' soybean roots were greater at 30 +/- 1 C than at 20 or 25 +/- 1 C. Plant height and root weight varied with the soil treatments.

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      Journal
      J. Nematol.
      Journal of nematology
      0022-300X
      0022-300X
      Jan 1979
      : 11
      : 1
      19305524 2617930

      tolerant, reproduction, infectivity, ecology

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