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Information × Registration Number 0222U001550, 0121U000051 , R & D reports Title 02.02.02.07.P Theoretically substantiate crop rotations with a high level of competitiveness to segetal vegetation popup.stage_title Head Kravchenko Vitalii P., Registration Date 28-01-2022 Organization Cherkasy State The Agricultural Experimental Station of National Scientific Center "Institute of Agriculture of National Academy of Agrarian Sciences of Ukraine" popup.description2  In agrocenoses of crop rotations, weed populations are represented mainly by several species of spring weeds: mouse blue (Setaria glauca L.) - 34.5 - 49.1%; white quince (Chenopodium album L.) - 22.9 - 38.4%, pepper bitter (Polygonum scabrum Moench.) - 1.6 -21.8%, buckwheat (Polygonum convolvulus L.) -2%, black sorrel (Solanum nigrum L.). 7.8 - 22%. In winter wheat crops from wintering weeds were dominated by common buckthorn (Capsela bursa pastoris L.), white cuckoo (Melandrium album L.), talasan field (Thlaspi arvense L.), curly Sophia (Descurainia Sophia L.) in the amount of 0, 1-5 pcs / m2. In the weed coenosis of ten-field crop rotations, annual weeds are 95-99.8%, the most common are: setaria glauca 32-34%, white quinoa (Chenopodium album) - 27-33%, black sorrel (Solanum nigrum) ) - 11 - 18%, pepper bitter (Polygonum scabrum Moench.) –14 - 26%, buckwheat (Fallopia convolvulus.) - 2%. The total number of weeds in ten-field crop rotations at the beginning of the growing season was 357 - 293 pieces / m2. With long-term use of uncultivated tillage, the number of weed seedlings in spring crops (peas, barley, corn, sunflower) is 1.4 to 3.2 times higher than during plowing. The average weediness of one field in a five-field grain-grass crop rotation during surface tillage is higher (269 - 299 pieces / m2) than for plowing (145 - 202) pieces / m2. In order to determine the economic efficiency of different methods of tillage, it was found that 257-771 UAH / ha higher net profit was obtained from surface and shelf-free tillage, the cost of 1 ton of grain - 2762-2831 UAH. compared to plowing 2947 UAH. / t. Higher profitability on options with a single dose of fertilizer. Product Description popup.authors popup.nrat_date 2022-03-09 Close