Changes of soil-available P and K on eroded slopes of West Lithuania
2003
Feiziene, D. | Feiza, V. (Lithuanian Inst. of Agriculture, Dotnuva (Lithuania))
Levels of soil-available P and K responses to traditional deep plough tillage compared to three sustainable tillage systems with shallow ploughing to winter cereals and various combinations of ploughless tillage and glyphosate spraying to spring cereals were investigated at three fertilization levels in a crop rotation on sloping, nutrient-deficient agricultural land during 1995-2000. Sustainable tillage caused weak stratification of soil P content at the end of 4th year of experiment. Sustainable tillage decreased soil erosion by 68-90. In the sustainable tillage systems the fertilizer had no significant positive influence on soil P and K changes in the 0-10 cm layer. The sustainable tillage systems without deep soil mixing predetermined the best positive changes of available P and K in the 10-20 cm soil layerm
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