|Lamb, Marshall - AUBURN UNIVERSITY|
Submitted to: American Peanut Research and Education Society Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: April 13, 1995
Publication Date: N/A
Technical Abstract: During CY 1994 in Southwest Georgia, Tropical Storm Alberto and other smaller storms produced excessive rainfall, flooding and excessive soil moisture conditions. While the excessive rainfall produced good yields and good quality peanuts on high elevated, well drained land, the excessive amounts of rain disrupted field operations and caused plant stunting and sometimes death in low and poorly drained areas. By taking samples at different elevations above the water table, some relationships were developed showing the effects of elevation and drainage on peanut yield, grade, maturity, shelling outturns and economic returns. The elevations and drainage needed to provide the maximum yield, grade, maturity, shelling outturns and economic returns were obtained by differentiating the regression equations; setting the resulting equations to zero; and then solving for the optimum elevations. The optimum elevation values above the water table at field capacity for an Orangeburg soil was 5.3', 4.4', 5.0', 3.9' and 5.0' for yield, grade, maturity, outturns and economic returns, respectively. These elevations, root studies and field data indicated that peanut yield, quality, and maturity would be lowered if the water table approached and stayed within 3.3' of the top of the ground for at least 7 days. The amount of reduction would depend upon the amount of root pruning, the plant stage and subsequent weather.