Effect of Sorghum-Sudangrass and Velvetbean Cover Crops on Plant-Parasitic Nematodes Associated with Potato Production in Florida
Keywords:
belonolaimus longicaudatus, cover crop, cropping sequence, dolichodorus heterocephalus, hemicycliophora sp., management, meloidogyne incognita, mesocriconema sp., modeling, mucuna pruriens, nematode, paratrichodorus minor, population dynamics, potato, root-knot nematode, solanum tuberosum, sorghum bicolor ×, s. arundinaceum, sorghum-sudangrass, sting nematode, stubby root nematode, tylenchorhynchus sp., velvetbeanAbstract
In a 3-year field study, population densities of Belonolaimus longicaudatus and other plant-parasitic nematodes and crop yields were compared between potato (Solanum tuberosum) cropping systems where either sorghum-sudangrass (Sorghum bicolor × S. arundinaceum) or velvetbean (Mucuna pruriens) was grown as a summer cover crop. Population densities of B. longicaudatus, Paratrichodorus minor, Tylenchorhynchus sp., and Mesocriconema sp. increased on sorghum-sudangrass. Population densities of P. minor and Mesocriconema sp. increased on velvetbean. Sorghum-sudangrass increased population densities of B. longicaudatus and Mesocriconema sp. on a subsequent potato crop compared to velvetbean. Potato yields following velvetbean were not greater than following sorghum-sudangrass despite reductions in population densities of B. longicaudatus.Downloads
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