Potential for managing Meloidogyne konaensis on coffee in Hawaii with resistance and a nematicide.

Abstract

Potential for managing Meloidogyne konaensis on coffee in Hawaii with resistance and a nematicide. Nematropica 31:67-73. The goal of this research was to determine if Meloidogyne konaensis could be managed with a nematicide and/or with resistant rootstocks. Coffea arabica cv. typica selection [sub1]Guatemala[sub2] grafted onto C. dewevrei stocks was compared to Guatemala and C. arabica cv. typica selection [sub1]502[sub2] grown on their own roots. Whole plots consisted of four trees (rootstock selection), two of which were treated bimonthly with 5.6-ml fenamiphos in 8-L water for two years and two trees were untreated. The Guatemala scions grafted onto C. dewevrei roots were more vigorous and gave greater yields than 502 and Guatemala grown on their own roots. The nematicide treated Guatemala and 502 on their own roots grew at a slightly faster rate than those growing in untreated soil. The growth rate of the grafted trees was the same in nematicide treated and untreated soil. Nematode numbers in the so