Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 May 1977
Published in Agron J 69:381-383 (1977)
© 1977 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Peanut Seed Germination as Related to Soil Water Regime During Pod Development1

J. E. Pallas, Jr., J. R. Stansell and R. R. Bruce2

The problem of poor peanut (Arachis hypogaea L.) seed germination has appeared to follow exceptionally dry years in Georgia; consequently, the interaction of soil water availability during the growing season and subsequent seed germination were studied. These results are a composite of 4 years of study under controlled rainfall shelters on Tifton loamy sand, a member of the fine-loamy, siliceous, thermic Plinthic Paleudults, at six soil water levels. Soil water levels involved irrigation at specified soil water tensions in surface 30 or 60 cm. Soil water tension ranged from + 0.2 to > 15 bar. Good germination of all varieties was obtained when the average soil water tension in the surface 30 cm was maintained at less than 0.6 bars. On the other hand, allowing ‘Florigiant’ to reach a soil water tension greater than 15 bars during the growing season lowered its percentage of sound mature kernels 34%. Of those sound mature kernels, germination was lowered on an average 20%. By contrast, under the similar treatment, SMK's of ‘Florunner’ and ‘Tifspan’ were lowered 22 and 7%, respectively, and the germination of either cultivar was lowered only about 5%. Thus, the large-seeded Virginia type peanut, Florigiant, was found to be the most susceptible to droughty soil conditions. Irrigation appears to be good insurance against poor peanut seed germination in the following year.

Key Words: Soil water tension • Arachis hypogaea • Cultivar response to drought

1 Contribution from Southern Piedmont Conservation Research Center, Watkinsville, GA 30677, Athens, Georgia Area, Southern Region, ARS-USDA, in cooperation with the Coastal Plain Exp. Stn., Univ. of Georgia College of Agriculture, Tifton, GA 31794. This research was supported in part by the Georgia Agricultural Commodity Commission for Peanuts.

2 Plant physiologist, USDA-ARS, Watkinsville, GA 30677; assistant professor, Agricultural Engineering Dep., Coastal Plain Exp. Stn., Tifton, GA 31794, and soil scientist, USDA-ARS, Watkinsville, GA 30677.

Received for publication May 21, 1976.




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Environmental Quality		 The Plant Genome
Copyright © 1977 by the American Society of Agronomy.