Effect of ameliorating cultural practices on cation content in saturated water extract of solonetz soil
2001
Belic, M. | Hadzic, V. (University of Novi Sad, Novi Sad (Yugoslavia). Faculty of Agriculture)
This paper shows the results of a study of the effect of long-term ameliorating cultural practices on the content and qualitative composition of cations in saturated water extract of the solonetz soil. Based on the results of field visits and laboratory analyses, chemical and agrochemical ameliorating practices have been selected (amounts of phosphogypsum and fertilizers, tillage system and crops) and applied on a solonetz soil, subtype typical, variety non-saline, form medium deep. The content and qualitative composition of cations have been determined in soil samples taken in all variants established at an experimental field, including the control variant. The analyses have shown that calcium and sodium cations prevailed over magnesium and potassium cations in saturated water extracts from all variants and all depths. Comparisons among variants and soil layers have shown that the contents of individual cations varied significantly. A high positive correlation existed between the contents of calcium and magnesium. Calcium was negatively correlated with sodium and positively correlated with potassium. The results have shown that the application of the ameliorating cultural practices caused changes in the comparison and proportions of cations in the layers of the solonetz soil to the depth of 50 cm.
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