Olepir R. The efficiency of tillage and sowing methods used in soybean cultivation in Left Bank Forest-Steppe zone

The object is transformation process of main agrophysical parameters of typical heavy loam black soil at different ways of tillage and sowing, changes in weed-infested field influenced by technological measures of weed control, and soybean productivity formation. The aim of the study - optimize the methods of primary tillage, sowing and technological measures of weeds presence control in soybean crops, taking into account the soil and climatic conditions of Left-bank Forest-steppe zone. The methods are field, measuring -weighing, laboratory, mathematical-statistical, calculated and comparative. It is established the peculiarities of influence and scientifically justified the optimal combination of primary tillages, sowing and mechanical measures of weeds control in fields in soybean growing technology in order to form 2.0-2.2 t per ha of organic grain. Main research results implemented in 2013 in the farms of Poltava region on a total area 244 hа. Areas of use are agricultural production.