Skory N. Productivity of parents lines of sorise depending on the time sowing and methods of harvesting under conditions of the Southern Steppe of Ukraine.

Objekt of researches: paternal forms of sorise/ The purpose of research: to study the influence of the main agrotechnical methods on the produktivity of sorise lines in nonirrigated conditions in the South of Ukraine. To establash optimal? ekonomically justibied scheme and date of planting and harvecting of parental lines of sorise. Methods of researches: bield short-term one-and two-factor experiments according to the techniques of attendant reseaches standard in agricultury - for the first time in nonirrigated conditions of the South of Ukraine there has been studied the influens of the planting schemes on the formatin of the sound panicle; there has been established the dependance of the process of plant growth of planting to prowide high and stable crop productivity; it has been offered the technology of harvesting at different phases of grain maturity; there has been carried out the economic and biopower lines cultivation. 2) for practice the application of offered scheme and date of planting so as date and methods of harvesting will ensure 32,0 - 34,8 cent/ha of high - quality seeds with considerable economic and power ebbiciency. Sphere of use: farms of different forms of ownership with cultivation of cereals in nonirrigated conditions in the South of Ukraine.