Plant and Soil Science

Field experiment found that the refusal of mechanical soil tillage of typical black earth with a periodic its disking one year after in the Right-bank Forest-steppe of Ukraine leads to a significant increase in crops weed infested and a 23 % decrease in arable land productivity. The result was the following provisions: the refusal of the primary soil tillage with periodic surface treatment of 8-10 cm disk harrow causes a significant increase in weeds: the abundance of weeds in 4.2 times and their mass - in 3.1 times. In this case, the effectiveness of herbicides is significantly reduced by 2.3 times and by weight - by 7.6 times; The yields of all crops (spring barley, soybean, winter wheat, and oat mix) significantly decrease, respectively: 18, 39, 12 and 2, 4, and productivity of arable land in crop rotation by – 23 %; The prospect of minimizing the mechanical cultivation of soil in conditions of ecologization of agriculture will be the search and introduction of effective biological control means of weeds. 

number and weight of weeds, productivity, mechanical soil tillage, herbicides