THE DEPENDENCE OF THE YIELD OF MILLET ON THE WEATHER FACTORS IN THE CONDITIONS OF THE TAMBOV PROVINCE

Many cultural plants including millet grow in the Tambov province. Their productivity depends on forming conditions of the weather. Not all weather factors render the solving influence upon value of the harvest. The leading role belongs to the total precipitates and temperature of the air. The given factors influence on productivity of the plants in determined period of their development. Discovery of leading factors of the weather and period of their influence on plants allows forecast the productivity of the crops. The purpose of the study is to study dependence of productivity of the millet’ plants on weather conditions of vegetative period. The long-term data of field experience and results of the meteorological observations were used in work. The mathematical calculations were conducted with use of computer technology and program Excel. It was established that the factors of the weather of the May and June have significant influence on productivity of the culture. This factor in the most degree depended on hydrothermal conditions. The value of correlations ( R ) between productivity of millet and hydrothermal coefficient (HTC) of the May was 0.735, June - 0.600, for the whole period - 0.931. The high level of productivity of the culture (2.11-2.93 t/h) was registered in years, when HTC for above named period was on the level 1.16-2.00. In years with low productivity of millet (1.32-1.89 t/h) the hydrothermal coefficient for period May-June was at a rate of 0.21-0.83. Equation of rectilinear regression was received, reflecting given dependency. The retrospective analysis shows satisfactory convergence of expected and actual productivity of the culture.

millet, harvest, hydrothermal coefficient (HTC), equation to rectilinear regression, forecast