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Interpretive Summaries:
1998 - Effects of Chloride Rates and Sources on Winter Wheat in Kansas
1997 - Effects of Chloride Rates and Sources on Winter Wheat in Kansas
1996 - Effects of Chloride Rates and Sources on Winter Wheat in Kansas
Effects of Chloride Rates and Sources on Winter Wheat in Kansas, 1998
Research on chloride (Cl) fertilization of wheat has shown significant yield response in Kansas in about 60 percent of the studies. Chloride seems to affect progression of some leaf diseases by suppressing or slowing infection. However, responses have been noted even in the absence of disease, suggesting that some Kansas soils may not be able to supply sufficient Cl. Field research was continued in 1998 at three sites to evaluate Cl rates (0, 10, 20 lb/A) and sources potassium chloride, magnesium chloride, and sodium chloride on winter wheat yield.
Grain yields in 1998 were average to excellent and Cl fertilization increased yields at all three study sites. Chloride significantly increased wheat grain yields at two sites by an average of 6.5 bu/A. At $3/bu wheat this would increase gross return by $19.50/A. Chloride fertilization consistently and significantly increased wheat tissue Cl concentrations. All Cl sources performed similarly. Soil test Cl continues to be an excellent predictor of potential response. Both responsive sites tested less than 20 lb Cl/A (0 to 24 inch sample). This study has furthered the understanding of conditions that favor wheat response to Cl in the Great Plains. KS-21F
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