Institution:Oklahoma State University
Project Fiscal Year:2018
Report Received Date:
Project NPB Budget:$6,000
Conditions at the Caddo Research Station were generally favorable for development of the peanut crop and diseases. Rainfall during the cropping period (May through October) totaled 3.5 inches for May; 3.75 inches for June; 4.03 inches for July; 1.61 inches for August; 7.31 inches for September; and 6.02 inches for October. Monthly rainfall totals were below normal in May, June and August, but were from 1.7 to 4.3 inches above normal in the other months. Average daily temperatures were above normal in May and June and below normal for the remaining months. The cool wet conditions favored severe foliar disease development. Web blotch was unusually severe in 2018 on Spanish varieties. Pod rot was a minor concern while levels of Sclerotinia blight and southern blights were somewhat below normal. However, locations where seed was inoculated with Sclerotium rolfsii, southern blight pressure was extreme. Adverse weather late in the season including excessive rainfall, cool temperatures and an early freeze, made harvest conditions challenging statewide. Harvest losses due to weather were a problem in commercial fields, but not in the trials reported here.
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