COMPARATIVE ASSESSMENT OF ADAPTIVE PROPERTIES AND THE EFFICIENCY OF THE BLUE LUPINE VARIETYIES CULTIVATION
Important reserve that determining the efficiency of agriculture with developed dairy cattle breeding is the selection of field crops for universal use, ensuring the procurement of high-quality fodder. The aim of the research is to study the adaptive properties of the lupine culture in the Udmurt Republic, analysis of the blue lupine varieties cultivation efficiency. The studies were carried out in the southern agroclimatic region of the Udmurt Republic, on the grey forest soil. The arable soil layer was characterized by a humus content of 2,1-2,6 %, mobile phosphorus by 100-101 mg/kg of soil, mobile potassium by 101-170 mg/kg of soil and from medium acid to close to neutral soil with pHKCl reaction (5,0-5,6). Research included four varieties of blue lupine: Snezhet', Kristall, Vector, Fazan. In the run of the years of research the yield of blue lupine varieties had a significant variation, as indicated by the collection of dry matter of the Kristall variety 5,26 t/ha and 0,81 t/ha of the Fazan variety. During the research period a relatively high yield of 1,36-4,95 t/ha was formed by the Snezhet' variety. This variety formed a significantly high yield by 0,51 t/ha or 17 % in 2005 (LSD<sub>05</sub> = 0,37 t/ha), by 0,16 t/ha or 13% in 2009 (LSD<sub>05</sub> = 0,12 t/ha), by 0,31 t/ha or 28 % in 2010 (LSD<sub>05</sub> = 0,06 t/ha) regarding the yield of the Kristall variety. The Snezhet' and Vektor varieties (S<sup>2</sup>d = 0,05...0,14) were distinguished by their high resistance to changes in agro-ecological conditions. The combination of indicators of ecological plasticity (bi = 0,60) and phenotypic stability (S<sup>2</sup>d = 0,60) of the Kristall variety indicates its high adaptive properties. The difference in productivity of blue lupine varieties influenced the economic efficiency of their cultivation. Green mass with the lowest cost price of 1370 rubles/t and a level of profitability of its production of 9 % has been provided by the Snezhe't variety.