Research Papers: Nematodes Parasitic on Peanuts in Alabama and Evaluation of Methods for Detection and Study of Population Dynamics
Authors
E. G. Ingram
R. Rodriguez-Kabana
Keywords:
Nematode Survey, Root-Knot, Lesion, Stubby, Dagger, And Ring Nematodes, Meloidogyne arenaria, Meloidogyne hapla, Pratylechus brachyurus
Abstract
A study was made to determine the nematode genera present in the peanut producing area of Alabama, observe their seasonal population development, and to evaluate different methods of nematode detection. Field plots were located throughout the peanut producing area of Alabama in 1976 and 1977 Soil and plant samples were taken in June, July, September, and November-December of each year. Nematodes were extracted from soil and corn and tomatoes were used as bioassay plants for Pratvlenchus spp. and Meloidogyne spp., respectively. Soil extractions showed fields infested (season maximum) with Criconemoides spp., Trichodorus spp., Tylenchorhynchus spp., Xiphinema spp. and tylenchoid nematodes at 83.0, 50.9, 3.6, 19.6, and 69.6 percent, respectively. Corn bioassays showed fields (season maximum) with aphelenchoid nematodes, Pratylenchus spp. and Helicotylenchus spp. at 97.3, 83.9, and 33.0 percent, respectively. Tomato bioassays indicated fields infested with Meloidogyne spp. (season maximu
