INFLUENCE OF PRIMARY TILLAGE AND CHEMICALS ON GARDEN PEA YIELD IN SUB-TAIGA ZONE OF WESTERN SIBERIA

The publication studies influence of the primary tillage and complex chemicals on crop yield and quality of garden pea in respect to the climate conditions of sub-taiga zone in Western Siberia. It outlines interactions between elements of crop yield and plants productivity; it estimates economic and bioenergetics efficiency of applying of different agricultural technologies on garden pea cultivating. The most favourable agrophysical condition of the layer equal to 0–30 sm and density 1,15 g/sm3 was observed when surface tilling. Sub-surface tillage and surface tillage resulted in soil density up to 1,18 g/sm3. Deeper fall tillage (on average 193–194 mm) favours to great moisture content in the soil layer. Surface tillage favours to moisture concentration less (on 16mm or 8.5 %) and is equal to the lowest level of moisture. Subsurface tillage and surface tillage with no herbicides prevent weeds less than ploughing. The paper points out that content of impurity in soil-protective covers was increased on 21–34 un/m2, or 88–107 g/m2, and dangerous, hazardous and harmful species are increased. The authors recommend applying of resource saving technologies of soil protection tillage in cases of applying mineral fertilizers and herbicides for good pea yield. They reckon it is efficient to  apply technologies of high energy in order to get high pea yields and conserve the soil fertility.

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