Влияние агротехнических и химических приемов уничтожения сорняков на продуктивность зернотравяного севооборота | Effect of agrotechnical and chemical weed control methods on productivity of grain-grass crop rotation
2012
Bulavin, L.A., National Academy of Sciences (Belarus). Scientific and Practical Center for Arable Farming
In course of the research there was studied the effectiveness of different methods of weed destruction in main agricultural crops in 9-field grain-grass crop rotation. The research was realized in 2001-2010 in the conditions of the Republic of Belarus in Smolevichi (Minsk region). As a result of realized research it was revealed that in Belarus, at the existing infestation level of plough land, its highest productivity was provided by the application of the recommended rates of herbicides on all crops of the сrop rotation. The complex of agrotechnical methods including bastard fallow soil cultivation and harrowing of crops was significantly inferior to chemical methods, however, their combination made it possible to lower herbicidal stress in the crop rotation from 0.40 to 0.27 kg/ha of active substance, i.e. by 32.5% not reducing essentially plough land productivity. On average cultivated sod-podzolic light loamy soil application of the recommended herbicide application rates for all crops of crop rotation at the level of herbicide load 0.40 kg/ha of active substance reduced the average contamination of crops by 80.7% in number and 79.2% by wet mass of weeds, providing an additional fee of 8.5 t/ha of fodder units (23.7%). At herbicide load of 0.27 kg/ha of active substance these figures were respectively 52.4%, 56.3% and 6.5 t/ha of fodder units (18.1%).
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