Abstract
Van Steenwyk, R. A., Kirkpatrick, B. C., Purcell, A. H., Fouche, C. F., Grant, J. A., and Uyemoto, J. K. 1995. Evaluation of an abatement program for western X-disease in sweet cherry. Plant Dis. 79:1025-1028. The components of a western X-disease (WXD) abatement program for sweet cherry in California were evaluated in nine cherry orchards from 1986 through 1990. Components of the program included removal of WXD-infected trees to reduce WXD inoculum in the orchards and post-harvest application of long-residual insecticides to reduce leafhopper populations. A stepwise linear regression of the percentage of new WXD infections against the percentage of WXD-infected trees remaining in the orchards from one year to the next and insecticide residual longevity showed that WXD-infected tree removal was primarily responsible for reduction in new WXD infections and that insecticide residual longevity contributed only a minor amount in suppression of new infections.
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