Strip and Broadcast Treatments of Dichloropropene Compared for Controlling Criconemella xenoplax and Short Life in a Peach Orchard. E. I. Zehr, Professor, Department of Plant Pathology and Physiology, Clemson University, Clemson, SC 29634-0377. J. K. Golden, Associate Professor, Department of Plant Pathology and Physiology, Clemson University, Clemson, SC 29634-0377. Plant Dis. 70:1064-1066. Accepted for publication 14 April 1986. Copyright 1986 The American Phytopathological Society. DOI: 10.1094/PD-70-1064.

A broadcast treatment of dichloropropene in soil before peach trees were planted was not more effective than a strip treatment (50% of surface area) for control of Criconemella xenoplax or improving tree growth, but the broadcast treatment was more effective for improving tree longevity and reducing Pseudomonas syringae pv. syringae infection. The effects were transitory, however, and tree mortality in all treatments was severe by the sixth year after planting. Broadcast treatments might improve yield during the first years of production but cannot be substituted for supplementary nematicide treatments after planting for significantly extending peach tree longevity.