Population Densities of Root-knot Nematodes following Corn and Sorghum in Cropping Systems
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چکیده
Densities of the root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood,were compared following summer crops of tropical corn (Zea mays L.) and sorghum (Sorghum bicolorL.) at several locations in north Florida. Densities of M. incognita remained low soil) following the sorghum cultivars DeKalb FS25E and DeKalh BR64 and the sorghum sudangrass (S. sudanense [Piper] Stapf) hybrid DeKalb SX-17, and were lower than population densities following any of the corn cultivars tested. Results were consistent, regardless of location, planting date, or tillage practices. Densities of M. incognita following the sorghum cultivar Asgrow Chaparral were not consistently lower than those following corn. Sorghum can be an effective rotation crop for keeping M . incognifa populations low, but cultivar choice is critical.
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