Soybean yield forecasting under two-line seeding method

The research objective was to base the possibility of soy crops in the two-lower case way with the development of algorithm of productivity forecasting on the indicators of registration allotments. The research of the agrotechnology of soy cultivation in Primorsk Region was carried out on the territory of experimental field FSBEI HE ‘Primorsk State Agricultural Academy’. The forecasting of the productivity on the indicators of registration allotments was executed with the application of mathematical modeling. According to modern ways of crops one plant nutrition area can vary from 160 to 2000 cm2, however, the greatest productivity of the culture was reached at one plant nutrition area within 600-1200 cm2. This indicator was optimally realized when using a two-lower case way of crops (the patent RU No. 2604928). The seeds settle down the ranks located within alternating distance, thus the distance between nearby ranks had to make 0.866 from the distance of a step of an arrangement of seeds among, and the distance between remote ranks had to be 3-5 times more, than the distance between nearby ranks. The seeds in one of grooves settle down with the shift in relation to the seeds in the next groove on a half of distance of a longitudinal step, thus, each three nearby seeds of the next grooves in the plan settle down in tops of an equilateral triangle. The approbation of this way under production conditions was carried out. The seeding was carried out with a step of plants among 0.14 m respectively the ranks were placed with alternation of the distances of 0.12 and 0.58 m. It allowed to coordinate crops geometry with the track of installation of wheels of sowing car and aggregating mobile power means, and also to provide norm of seeding of seeds on 1 hectare of the area of 204 thousand pieces. The technique of the settlement forecasting of soy productivity when using of given way of the crops was offered. The calculation for test platforms, rather small on the area, will have a relative error, for its correction it is necessary to use correction coefficient.