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Information × Registration Number 0223U000342, 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 06-01-2023 Organization Cherkasy State The Agricultural Experimental Station of National Scientific Center "Institute of Agriculture of National Academy of Agrarian Sciences of Ukraine" popup.description2 According to Braun Blanke, the segetal vegetation of our agrophytocenoses belongs to the class Stellarietea mediae Centauretalia cyani R. Tx. 1950, order Secalietalia Br.-Bl. 1931 em J. et R.Tx. 1960 D.s. Ord. = D.s. C. In agrocenoses of crop rotation, the weed population is represented by several types of spring weeds: gray mouse (Setaria glauca L.) - 34.5 - 49.1%; white quinoa (Chenopodium album L.) - 22.9 - 38.4%, pepper mustard (Polygonum scabrum Moench.) - 1.6 -21.8%, buckwheat (Polygonum convolvulus L.) -2%, nightshade (Solanum nigrum L.). 7.8 - 22%. Evaluation criteria of the state of fertility of typical low-humus chernozem are the ratio of monocotyledonous and dicotyledonous plants in the coenosis, taking into account their mass; a significant part of the mouse is blue as an indicator of reduced soil fertility and, conversely; the presence of a significant number of such nitrophils, such as white quinoa, black nightshade, common sorrel, as an indicator of high soil fertility with a tendency to actively remove nitrogen from them. The largest losses of nutrients are observed in field-free cultivations with the introduction of a double dose of fertilizers 39 - 52.4 kg/ha, and the smallest in plowing 10.8 - 26.7 kg/ha. The removal of NRK increases by 2.1-1.5 times with increasing soil fertility: 10.8 kg/ha in the control without fertilizers, 23.3 kg/ha in the background of N31Р33К41, 26.7kg/ha in the background of N62Р66К82. With long-term use of tillage, the number of weed seedlings in spring crops (peas, barley, corn, sunflower) is 1.4-3.2 times higher than in plowing. Five-field crop rotations saturated with 40% corn have a productivity of 10.3-12 t/ha of fodder units, which ensured a net profit of 18.2-25.7 thousand hryvnias/ha and a profitability of 61-103%. In the case of no-shelf processing, the cost of 1 ton of grain is 420-580 hryvnias/t less compared to ploughing.  Product Description popup.authors Kravchenko Vitalii P. Chala Svitlana Volodymyrivna Yarmilko Svitlana Andriivna popup.nrat_date 2023-01-06 Close