Survey of Nematodes Associated with Almond Production in California. Michael V. McKenry, Extension Nematologist, University of California, Kearney Agricultural Center, Parlier 93648. Joe Kretsch, Staff Research Associate, University of California, Kearney Agricultural Center, Parlier 93648. Plant Dis. 71:71-73. Accepted for publication 11 June 1986.. Copyright 1987 The American Phytopathological Society. DOI: 10.1094/PD-71-0071.

Soil samples (350) from 14 of 17 almond-producing counties of California were analyzed for presence of plant-parasitic nematodes. The presence of Criconemella xenoplax is associated with bacterial canker complex and sandy soils. Pratylenchus vulnus was detected in one-fourth of the almond production region. Xiphinema americanum was most prevalent in the cooler Sacramento Valley region. Paratylenchus hamatus was most common, and Meloidogyne spp. were among the rarest parasitic taxa detected. Gracilacus epacris is reported for the first time on Prunus spp. in California.

Keyword(s): fumigation, peach.