Control of Criconemella xenoplax and Meloidogyne incognita and Improved Peach Tree Survival Following Multiple Fall Applications of Fenamiphos. David F. Ritchie, Assistant Professor, Department of Plant Pathology, North Carolina State University, Raleigh 27695-7616. Plant Dis. 68:477-480. Accepted for publication 24 January 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-477.

No significant decrease in Criconemella xenoplax was detected within 2 mo of the initial fenamiphos application to peach (Prunus persica). After 1 yr, however, multiple or split applications of fenamiphos in the fall significantly reduced C. xenoplax and Meloidogyne incognita populations. The reduction of C. xenoplax populations to below detection levels did not prevent the occurrence of trunk cambial browning (winter injury); however, by the following spring, the fenamiphos-treated trees had better foliage condition than the untreated trees. Multiple foliar or soil oxamyl applications in the fall did not control C. xenoplax or M. incognita or improve tree survival compared with untreated trees.