, Volume 51, Issue 11, pp 361-368

Control of early blight in eastern and southcentral Idaho

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Abstract

Early blight foliage infection can be adequately controlled in eastern and southcentral Idaho with relatively few applications of fungicide if the initial application is properly timed. The initial application should occur near the time when secondary infection is beginning in the field. Spray schedules which began when the plants were small and continued every 12–14 days throughout the season were no more effective in controlling the disease than were three applications properly timed. Early season applications were of no apparent economic value in the overall blight control program.

Approved by Director of Idaho Agricultural Experiment Station as Research Paper 74718.
Mention of a trademark name or a proprietary product does not imply its improval by the U.S. Department of Agriculture to the exclusion of other products that may be available.