Potential of Crops Uncommon to Alabama for Management of Root-Knot and Soybean Cyst Nematodes
Abstract
Vigna unguiculata, Cassia fasiculata, and Sesamum indicum did not support Meloidogyne arenaria, M. incognila, or Heteradera glycines race 4 in greenhouse studies with soils from peanut and soybean fields. Fagopyron eseulentum, Cyamopsis tetragonoloba, and Cucurbita pepo were hosts to the two Meloidogyne spp. but were nonhosts to H. glycines. Meloidogyne arenaria and M. incognita galled but reproduced poorly in the roots of three types of Amaranthus cruentus, and low densities of these two Meloidogyne spp. ( 10 second-stage juveniles/100 cm³ soil) occurred in soil cultivated with this crop. In a field study no juveniles of M. arenaria determined at peanut harvest were recovered from plots with Ricinus communis, Gossypium hirsutum, Aeschynomene americana, C. fasiculata, or S. indicum. Peanut plots averaged 120 juveniles/100 cm³ soil. Application of aldicarb (12 kg a.i./ha broadcast) in peanut resulted in an average of 27 juveniles/100 cm³ soil. Several crops were as effective as aldicarb treatment for reducing soil juvenile population densities of M. arenaria. Key words: Amaranthus cruentus, Arachis hypogaea, Cassia fasiculata, cropping system, Cucurbita pepo, cultural practice, Cyamopsis tetragonoloba, Fagopyron esculentum, Glycine max, Heterodera glycines, Meloidogyne arenaria, Meloidogyne incognita, peanut, pest management, population dynamics, root-knot nematode, rotation, Sesamum indicum, soybean cyst nematode, Vigna unguiculata.Downloads
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