Productive capacity of crop rotation and changes in the fertility of clay loam in organic and intensive soil management
2002
Kristaponyte, I. (Lithuanian Inst. of Agriculture, Joniskelis, Pasvalys reg. (Lithuania). Joniskelis Research Station)
A high content of physical clay particles and low humus content in clay loam soils result in the manifestation of negative physical properties of the soil. At the Lithuanian Institute of Agriculture's Joniskelis Research Station trials were carried out over the period 1996-2000 on Endocalcary-Endohypostagnic Cambisols (CMg-n-w-can), clay loam on silty clay soil. In a five-course crop rotation we investigated mineral and organic fertilization system with a view to increasing humus content and improving physical properties of clay soils. The trial involved the following crop rotation: sugar beet, barley undersown with perennial grasses, perennial grasses of the first year of use, perennial grasses of the second year of use, winter wheat. Organic fertilizer (farmyard manure) 80 t ha*[-1) were applied to the member of the first rotation-sugar beet. Farmyard manure had a greatest effect on soil humus content as compared with unfertilized variant and mineral fertiliser treatment.
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