New Crops with Potential for Management of Soybean Nematodes
Autores
R. Rodriguez-Kabana
P. S. King
D. G. Robertson
C. F. Weaver
E. L. Carden
Palavras-chave:
Cowpea, Cultural Practices, Glycine max, Hairy Indigo, Heterodera spp., Host Range, Jointvetch, Lespedeza, Meloidogyne spp., Pest Management, Rotations, Soybean
Resumo
American jointvetch (Aeschynomene americana), 'Florida 101' hairy indigo (Indigofera hirsuta), and 'Iron' cowpeas (Vigna unguiculata) were more effective in reducing root-knot nematodes (Meloidogyne arenaria and M. incognita) and soybean cyst nematode (Heterodera glycines) race 4 in a greenhouse experiment than were alyceclover (Alysicarpus vaginalis), Kobe lespedeza (Lespedeza striata), Korean lespedeza (Lespedeza stipulacea) and 'Davis' soybean (Glycine max). The effects of American jointvetch and hairy indigo on soil populations of the three nematode species were also studied in a field in Baldwin County, Alabama. Soil from plots with the two legumes was essentially free of juveniles of root-knot and cyst nematodes throughout the growing season. Juvenile populations in these plots were as low as those in plots planted to 'Pioneer 8222' sorghum (Sorghum bicolor). Plots with 'Kirby' soybean had large juvenile populations (150 juveniles/100 cm of soil) of root-knot nematodes 1 month
