The effect of different doses of lime on the potash state in sod-medium podzolic medium loamy soil

Abstract

To study the transformation of soil potassium under the action of lime doses, long-term microfield experience was used. The one-factor experiment is laid in sixfold repetition. The location of plots is systematic with an offset. During three years of research, the following cultures of the crop rotation link were cultivated: annual grasses (vetch-oat mixture), winter triticale (variety - Izhevsk 2), spring wheat (variety - Yoldyz). In a long-term experiment on sod-medium podzolic medium loamy soil, it was found that the use of various doses of lime did not reduce the content of water-soluble and easily exchangeable potassium, but significantly increased the amount of mobile potassium to 8 mg/kg and non-exchangeable potassium to 13 mg/kg in the soil. In addition, liming affected the productivity of agricultural crops. Depending on the lime dose, it increased by 4 - 20%.