Research Papers: Assessment of Peanut Yield Losses Caused by Meloidogyne arenaria
Authors
R. Rodriguez-Kabana
J. C. Williams
R. A. Shelby
Keywords:
Population Dynamics, Nematode Control, Methods, Integrated Pest Management, Dowfume, Furadan, Nemacur, Soilbrom, Temik, Vydate
Abstract
Regression analyses were performed on data from 16 peanut (Arachis hypogaea L) field experiments to determine the relation between yield and larval numbers of Meloidogyne arenaria (Neal) Chitwood. The experiments were located in southeastern Alabama and consisted of nematicide treatments applied during 1979, 1980, and 1981. Treatments included a fumigant (EDB) and systemic nematicides (aldicarb, carbofuran, oxamyl, and phenamiphos). Each experiment consisted of 14 treatments replicated 8 times. Results indicated that yields were negatively related to larval numbers determined near harvest. Quadratic equations described the relation between the two variables better than the linear models. Results indicated the possibility of significant seasonal influences on the values of regression coefficients. The average yield loss caused by the average number of larvae/100 cm soil ranged from 427-539 Kg/ha. The equations obtained suggested that yield losses caused by M. arenaria occur even on li
