Abstract
This study was conducted in the farmer field between the years 2014 and 2015. In this study, 3 doses of potassium (K) (0, 10, and 20 kg da−1) of K2SO4 (50% K2O) fertilizer and 3 doses of humic acid (HA) (0, 20, and 40 kg da−1) (85% HA) were used. Increase in the HA dose reflected significant effects on pH, salt, organic matter, phosphorus, magnesium, iron, and manganese contents of the experiment area at p < .01 level. It was determined that increased potassium applications affected the salt, magnesium (Mg), iron (Fe), and copper (Cu) contents at p < .01 level. Increased HA application on plant growth criteria had a significant effect on biological yield, grain yield, and harvest index (p < .01). However, K did not reflect any effect on the growth stage of wheat. Increased number of HA applications on grain and straw nutrient content were found to have significant (p < .01) effects on P, K, Ca, Mg, Fe, and Zn. Increased potassium applications had an effect on the P, K, Mg, Fe, and Zn contents with a significant level (p < .01). It was observed that HA applications were more effective than potassium applications on both general soil properties and yield and nutrient content.
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Acknowledgements
This manuscript consist a part of M.sc thesis of Mehmet DİNÇSOY and the authors express their gratitude to Van Yuzuncu Yıl University.
Disclosure statement
No potential conflict of interest was reported by the authors.