Кvasnitska L. The influence of legumecrops on the productivity of short-term rotations and podzolized chernozem fertility of the Right-Bank Forest-Steppe.

Subject of research - the process of change of podzolized chernozem fertility and short-term rotation productivity indices under the influence of legume crop saturation and fertilizing system. The purpose - to work out the optimal legume crop sowing structure in the short-term rotations for the agroformations of various specialization. The methods are field, laboratory, quantitativelly-weight, chemical, mathematical, computational-comparative. The regularity of the effect of legume crops on crop rotation productivity is revealed, the complex soil fertility evaluation is adduced depending on crop rotation factor, the parameters of biologicfl nitrogen uptake in the crop rotation system at the expense of nitrogen fixatiion are determned. The economically and energetically expedient short-term rotations with legume crops are worked out for the farms of different specialization of the sufficient moistening zone of the right-bank Ukrainian Fores-Steppe. The research results are introduced at the State enterprise "Experimental Farm "Pasichna" of the Khmelnytskyi State Agricultural Experimental Station of of the UAAS" of the Starosynyavskyi districh of Khmelnytskyi region in 2007 over an area 250 ha and at agroformations of the Starokostyantynivskyi district of Khmelnytskyi region in 2005-2009 over an area 750 ha yearly. The field of application - the agricultural production.