[Role of various factors in fertility evaluation of arable soils of Belarus]
2007
Shibut, L.I.,National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry | Radchenko, N.V.,Belarus State Academy of Agriculture, Gorki (Belarus)
The territory of Belarus is characterized by a significant variety of soil cover as under genetic characteristics (type, granulometric structure, humidifying), and under other factors influencing on productivity of agricultural crops (climatic conditions, soil agrichemical properties, crop technical condition of fields). Soil diversity and their modern condition are considered at soils estimation. The closed 100-mark scale is used in Belarus for soil estimation. Sod-carbonated automorphic light loam soil located in optimum climatic and crop technical conditions is accepted for the standard of soils estimated in 100 points. If soils parameters or characteristics are below, or are worse than optimum, the estimation decreases proportionally to decrease in productivity of agricultural crops on these soils. Ten characteristics of soil cover and areas are considered at an estimation of soils in Belarus in total. Each of them influences on estimation of fertility of arable lands. Granulometric structure (26,5 points) and soil type (17,3 points) render the greatest influence, a little bit less - climatic conditions (8,4 points), humidifying (5,8 points), cultivation (5,7 points) and contour (2,9 points). Influence of erosion, stones, heterogeneity and reclamation condition has made on 0,5-0,6 points. As a result of carrying out of estimated works and accounting all the characteristics influencing on productivity of agricultural crops, the final estimation of arable lands of Belarus has made 31,2 points
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