pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/pnut.12.2.0005 10.3146/i0095-3679-12-2-5 Articles Yield and Quality Response of Florunner Peanut to Applied Drought at Several Growth Stages1 J. R Stansell and J. E Pallas Jr. 2 Assistant Professor, University of Georgia, Agricultural Engineering Department, Coastal Plain Experiment Stations, Tifton, GA 31793 and Plant Physiologist, ARS, USDA, Watkinsville, GA 30677

1Contribution from University of Georgia, Agricultural Engineering Department, Coastal Plain Experiment Station, Tifton, GA and ARS USDA, Watkinsville, GA. Supported by State, Hatch and Georgia Agricultural Commodity Commission for Peanuts and funds allocated to the University of Georgia College of Agriculture Experiment Stations.

 7 1985 12 2 64 70 21 9 1985 American Peanut Research and Education Society 1985 American Peanut Research and Education Society Abstract

Florunner peanuts (Arachis hypogaea L.) were subjected to 35 and 70-day drought periods during several growth stages (days after planting). Drought conditions were maintained by the use of automatic rainout shelters covering groups of drainage lysimeter plots.

Detrimental effects of 35-day drought periods were greatest from 71–105 days after planting, least for 106–140, and intermediate for 36–70 days after planting. Seventy days of drought extending from 36 through 105 days after planting effectively eliminated pod production, whereas 70 days of drought during the period of 71 through 140 days after planting reduced but did not completely eliminate the production of marketable pods.

 Key Words Irrigation; , rainfall shelters; , available water; , drought