| Popis: |
Over three years of research, the number of weeds per 1 m2 in the direct seeding (DS) variant was 19 pcs. more. At the initial stage of the oil flax development, which was cultivated under conventional technology, the number of unwanted plants in the variant without inoculation was, on average, 32 pcs./m2; with complex microbial preparation (CMP) treatment – 31.5 pcs./m2. In the context of DS technology, there were 51 pcs./m2 in the variant with inoculation; 50 pcs./m2 – without CMP treatment. The increase in the weed component under DS is due to better moisture and nutrients availability. In the experimental plots with and without inoculation, the difference in the variants cannot be proved from the mathematical point of view. Before harvesting, as a result of the herbicidal treatment, the difference between the technologies levelled. The total number of weeds per 1 m2 under conventional technology with the application of CMP was 24 pcs./m2, its average weight – 34.6 g/m2; in the variant without CMP application – 22.4 pcs./m2 and 34 g/m2, respectively. Under DS, with CMP – 21.3 pcs./m2 and 41.2 g/m2; without CMP treatment – 21 pcs./m2 and 41 g/m2. Furthermore, the species composition of weeds did not differ depending on the cultivation technology. Their number, yet, was greater under DS in the stage of full emergence. In the full ripeness stage, the amount of the weed component decreased. At the time of harvesting, it caused no significant effect on the yield neither under DS nor conventional technology regardless of the CMP treatment. However, the weight of dry weeds was higher under DS, on average, by 7 g/m2 per three years. |
