Influence of Gypsum Application on Peanut Yield and Quality
- Pawel J. Wiatrak *,
- David L. Wrighta,
- Jim J. Maroisb and
- David Wilsonc
Peanut (Arachis hypogaea L.) yield and quality can be influenced by gypsum application. The objective of this study, conducted in 2001 and 2002, was to evaluate the influence of two gypsum applications (0 and 500 lb/acre) on yields and quality of two peanut cultivars ('Georgia Green' and 'C-99R'). Peanut quality test included sound mature kernels riding screen (SMKRS); sound splits; total sound mature kernels (TSMK); other kernels; and total damage, kernels, and hulls. Peanut yields were higher with gypsum application (4343 lb/acre) compared to the treatment without gypsum application (3926 lb/acre) in one of two years. A lower percentage of TSMK (72 and 74%) and greater percentage of total hulls (23 and 22%) were observed when gypsum was applied in one of two years compared to the treatment without gypsum. Averaged across years, a greater percentage of other kernels was observed with gypsum application (4.6%) than without gypsum (4.0%). Cultivar did not influence peanut yields. The percentage of total damage was greater in 2001 (0.8 and 0.1%) and less in 2002 (0.4 and 1.3%) for Georgia Green than C-99R peanuts, respectively. Greater percentages of SMKRS, TSMK, total kernels, and less sound splits and total hulls were obtained for Georgia Green than C-99R peanuts. The results of this study indicate that gypsum applications may help to increase peanut yields in years with higher yields likely due to adequate availability of Ca in the fruiting zone.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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