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Evaluation of Use-Pattern Alternatives with Metalaxyl to Control Foliar Diseases of Spinach. F. J. Dainello, Horticulturalist, Texas Agricultural Experiment Station, Uvalde 78801. R. K. Jones, Plant Pathologist, Texas Agricultural Extension Service, College Station 77843. Plant Dis. 70:240-242. Accepted for publication 26 August 1985. Copyright 1986 The American Phytopathological Society. DOI: 10.1094/PD-70-240.

Metalaxyl at rates 0.13.7 kg a.i./ha, applied in-furrow as granules or to the soil surface as a bed spray, controlled white rust of spinach for 4860 days after planting. Seed treatments with metalaxyl at rates of 0.51.0 g a.i./kg of seed controlled white rust and blue mold of spinach for 30 days. Such use patterns may provide alternate strategies to foliar sprays in the deployment of metalaxyl on spinach.

Keyword(s): Albugo occidentalis, Peronospora effusa.