Sira I. Salts of sodium and magnesium as agrosystem optimization factor under the growing of sugar beets on typical chernozem in Leftbank Forest Steppe of Ukraine

Object - physiological-agrochemical processes which cause influence of sugar beets plants spray fertilizations by sodium and magnesium salts solutions on living activity of plants and seeds. Purpose - investigation of influence spray fertilizations by sodium and magnesium salts solutions influence on sugar beets living indexes under the growing on typical chernozem in the Left-Shore Forest-Steep of Ukraine. Methods - long-term field, microvegetative and laboratory experiments with accompanying fenological observations, biometrical measuring, sampling and its analytical investigations of soil and plant samples. Theoretical results -has been found the influence of salt solutions foliar dressing on biometric indices of sugar beets plants; has been determined the biological productivity of sugar beets roots in depending of salts solutions forms and fertilization levels; has been found the influence of foliar dressing and nutritional levels on sugar content in the roots and sugar output per ha. It has beendetermined the peculiarities of the relations between foliar dressings, nutritional levels and soil exchange cations. Practical results - it is recommended to use the solutions of NaCl and MgSO4 in the forms spray foliar dressing under the growing of sugar beet on typical chernozem in the Left-Shore Forest-Steep of Ukraine for plants productivity and sugar output increasing. The dozation of chemical solution is 250 litres per ha which is equal to 6,8 kg per ha of NaCl and 0,9 kg per ha of MgSO4. This dozation is the same for fertilizers applying (N140P70K70) and without fertilizers. Novelty - at the first time it is conducted the investigations of sodium and magnesium salt solutions foliar spray dressing influence on development, nutrition, productivity of sugar beet on typical chernozem. Has been found the action peculiarities of studying salt solutions on agroecosystem status under the sugar beets growing from the point of view of ecologically agrochemical optimization and positive cost efficiency of investigated methods. Degree of application - obtained results have been passed to farms with sugar beets cropping in Velico-Pysarev region of Sumskaya oblast. The field is agricultural.