Authors:
V. V. RZAEVA,
candidate of agricultural sciences, associate professor, head of department, Northern Trans-Ural State Agricultural University
(7 Republic Str., 625003, Tyumen)
Abstract. The article presents the results of studies on the effect of methods and depth of primary processing on contamination of crops of spring wheat. Good difference of contamination between the processing means can be seen best in the phase of tillering (before herbicide application), since by this time already created favourable conditions for germination of weeds. This explains the large weed infestation during this period. Reducing the depth of treatment methods of treatment contributed to the increase of weeds 3.7 PCs/m2 at the dump, 4.9 PCs/m2 — at subsurface, 4.4 PCs/m2 — at a differential. Zero treatments number of weeds amounted to 55.9–63.4 per PCs/m2, which exceeds the control by 16.8–24.3 PCs/m2. An annual tillage and application of herbicides, i. e. respecting the culture of agriculture, a contamination of crops of spring wheat in 2008–2016 decreased 2.0 times in the moldboard treatment, 1.9 times — at the subsurface, 2.1 times — for the differentiated treatment in comparison with 2000–2002. Considering the soil treatment methods, confirm that the moldboard treatment contributes to a better weed control. A decrease in depth of processing and rejection contribute to the increase of contamination.
Keywords: soil treatment, method of treatment, depth of treatment, the contamination of crops, spring wheat.
