Abstract

Systematic studies of physicochemical composition of potato starch waste water (PSWW) used to irrigate grassland have been performed. The application of PSWW results in changes in chemical composition of the soil. Shortly after irrigation, (i.e., 1 month), an increase in content of nitrogen, potassium, magnesium, phosphorus and organic carbon took place. After the next 8 months, a decrease in the content of these elements was noticed. Application of PSWW caused a decrease in the content of calcium and in soil pH as well as an increase in hydrolytic acidity of soils especially when a high PSWW dose was used.

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