Nematode densities associated with corn and sorghum cropping systems in Florida.
Final densities (Pf) of Meloidogyne incognita and Pratylenchus spp. increased more than ten-fold over initial densities (Pi) on corn (Zea mays) cultivars grown at three sites in north Florida. The Pf of M. incognita following sorghum (Sorghum bicolor) were much lower (P </=0.001) than Pf following corn at the two sites in which sorghum was grown. At one of these sites, Pf of M. incognita was </= 5/100 cm(3) soil, and at the other site Pf < Pi. At one site, population densities of Criconemella sphaerocephala increased to higher levels on sorghum than on corn, but Pf of Pratylenchus spp. were greater (P </= 0.01) on corn. Few differences in nematode densities were observed among the different corn cultivars tested.
Gallaher
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McSorley
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