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Trends in Agronomy   Volumes    Volume 1 
Abstract
Reaction of four runner peanut (Arachis hypogaea L.) cultivars to foliar disease development and peanut yield under four disease management programs
A. J. Jaks, B. A. Besler, W. James Grichar
Pages: 35 - 44
Number of pages: 10
Trends in Agronomy
Volume 1 

Copyright © 1997 Research Trends. All rights reserved

ABSTRACT

Peanut (Arachis hypogaea L.) pod yield and response to early and late leaf spot (caused by Cercospora arachidicota S. Hori and Cercosporidium personatum (Berk. & M.A. Curtis) Deighton, respectively) were evaluated on four cultivars: Florunner, GK-7, Southern Runner, and Sunrunner under four leaf spot spray programs using tebuconazole at 0.58 L/ha in combination with chlorothalonil at 1.75 L/ha. The four leaf spot spray programs included unsprayed, 14-day schedule, 21-day schedule, and 28-day schedule. Under conditions of heavy leaf spot disease pressure where no fungicide was applied, Southern Runner had 8-11% less leaf spot late-season than other cultivars. Less leaf spot was present in the 14-day spray schedule plots compared to 21- or 28-day spray schedule plots. There was no differences in yield across cultivars between 14-, 21-, and 28-day spray schedules; however, these yields were greater than those from the untreated check.

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