[Ecological and economic efficiency of application of methods of soil-protective agriculture in conditions of hilly-moraine lake agrolandscapes of Belarus Poozerje]
2007
Chernysh, A.F. | Yukhnovets, A.V. | Dubovik, A.Eh.,National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
The estimation of ecological and economic efficiency of various soil-protective techniques on eroded sod-podzolic soils developing on moraine loams has shown that combined application of organic-mineral fertilizer system and soil-protective tillage not reducing productive ability of studied soils, essentially raises antierosion stability, promotes the greatest decrease humus losses and nutrients and provides economic benefit of 198,5 thousand ruble/ha on a non eroded soil, 108,2 thousand ruble/ha on middle eroded and 50,5 thousand ruble/ha on strongly eroded soil. Replacement of moulded plowings for mold chisel has not decreased productive ability of sod-podzol soils, developing on moraine loams, however, noticeably reduces economic and energetic expenses for manufacture of agricultural production. Application of mold plowing in combination with organo-mineral system of fertilizer promotes improvement of structure (Coefficient of water stability has increased on 0,13-0,16), increases water durability of structural units for 8,5-10,7%. The prevented losses make 106,9 kg/ha humus, 5,9 kg/ha nitrogen, 2,4 kg/ha phosphorus, 3,0 kg/ha potassium. Application of organo-mineral fertilizer system has promoted more noticed increase in erosion-preventive stability. Decrease in coefficient of instability has made 1,16-2,25 in comparison with the control variant. Maximum increase in content of water stable agregate of arable horizons of eroded soils has been received at combination of organo-mineral fertilizer system with the mould tillage (on 8,5-10,7%)
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