Effects of Humic Acid and Phosphorus Applications on Growth and Phosphorus Uptake of Corn Plant (Zea maysL.) Grown in a Calcareous Soil

Authors: İBRAHİM ERDAL, MEHMET ALİ BOZKURT, KERİM MESUT ÇİMRİN, SİYAMİ KARACA, MUSTAFA SAĞLAM

Abstract: The aim of this study is to investigate the effects of different humic acid and phosphorus levels on corn plant ( Zea mays L.) growth and P availability in a calcareous soil. Four levels of P (0, 20, 40, 80 mgkg^{-1}) and 3 levels of humic acid (0, 250, 500 mgkg^{-1}) were used in the experiment. The results showed that the dry weight, plant P concentration, P uptake and residual available P amount increased with humic acid applications, and that the effect of humic acid on the above parameters combined with P fertilisation was higher than that of humic acid alone.

Keywords: phosphorus availability, soil factors, humic acid, cereals

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