EFFECT OF CHLORIDE FERTILIZERS AND LIME ON WHEAT GRAIN YIELD AND TAKE-ALL DISEASE

Autor:	Gordon V. Johnson, William R. Raun, E. V. Lukina, R. W. Mullen, Wade Everett Thomason, R. L. Westerman, K. W. Freeman, K. J. Wynn
Rok vydání:	2001
Předmět:	biology Physiology Potassium Crop yield food and beverages chemistry.chemical_element engineering.material Take-all biology.organism_classification Chloride Soil management chemistry Agronomy Soil pH engineering medicine Fertilizer Agronomy and Crop Science Lime medicine.drug
Zdroj:	Journal of Plant Nutrition. 24:683-692
ISSN:	1532-4087 0190-4167
Popis:	One experiment was initiated in the fall of 1991 to evaluate the effect of chloride (Cl) fertilizers on the suppression of take-all disease (Gaeumannomyces graminis var. tritici Walker) in winter wheat (Triticum aestivum L.). Preplant and topdress rates of potassium chloride (KCl) and calcium chloride (CaCl2) (0, 34, 67 and 101 kg Cl ha−1) were applied each year. In 1995, plots were split in half whereby one half received 2.24 Mg of 76% ECCE lime ha−1 to elevate the pH and potentially increase disease incidence. Wheat grain yield was not affected by lime applications in any year (1995–1999). Plots exhibited visual symptoms of take-all in almost all years, however, grain yields increased in only two of eight years by the application of CaCl2 and KCl. Applied fertilizer Cl for take-all disease suppression was inconsistent, even following the application of lime where increased soil pH can increase disease severity. Contribution from the Oklahoma Agricultural Experiment Station.
Databáze:	OpenAIRE
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