Submitted to: American Peanut Research and Education Society Abstracts
Publication Type: Abstract only
Publication Acceptance Date: 2/1/2001
Publication Date: 3/1/2002
Citation: Lamb, M.C., Bostick, J., Sorensen, R.B., Butts, C.L., Balkcom, K.S. 2002. Interactions of peanut seed size, planting depth, and water to emergence. American Peanut Research and Education Society Abstracts. Interpretive Summary: not required.
Technical Abstract: Due to extended early season drought during the 2000 crop year, planting decisions were complicated for non-irrigated peanut producers in the Southeast. Soil moisture content in most soils was depleted throughout the majority of the planting season. However, producers faced a deadline of May 25th to plant irregardless of environmental conditions to qualify for full crop insurance coverage. A replicated greenhouse study was conducted to address the interactions of seed size, planting depth, and water (amount, timing, and frequency) to moisture imbibe and final emergence. Greenville fine sandy loam soil (fine, kaolinitic, thermic Rhodic Kandiudults) was collected from a local field whre peanuts had not been planted for two years. The soil sifted over a vibratory screening to ensure any volunteer peanuts were removed. Soil was packed into planter boxes at an average bulk density of 1.34 Mg m-3 (83.6 lbs/ft3). Soil moisture at planting was 0.08 m3 m-3 (in3 in-3). Peanuts, Georgia Green, were sized into three commercial whole kernel categories of number ones, mediums, and jumbos and planted at depths of 1.5 and 3.0 inches (3.8 and 7.6 cm). Four water amounts of 0.0, 0.1, 0.3, and 0.7 inches (0, 2.5, 7.6, and 17.8 mm) were applied. The timing and frequency of the water applications were varied resulting in 56 different water scenarios. One of the primary objectives was to determine possible recommendations relative to seed size and planting depth could be formulated to assist non-irrigated peanut producers facing drought at planting.