Didenko V. The estimation of deflation processes in conditions of various technological loading and ways of soil protection in Ukrainian Northern Steppe

Object - deflation stability of chernozem ordinary depending from agrotechnology and natural conditions of Ukraine Northern Steppe. Purpose - scientific substantiation the deflation criteria , prediction of soil losses in Northern Steppe of Ukraine, taking into account the processes of daily deflation. Methods - the spatial - temporary analysis of deflation processes in chernozeming soils of Northern Steppe of Ukraine, methods of field researches, laboratory modeling and statistical processing. Theoretical results - the mechanism, dynamics and criterion of a quantitative estimation an agricultural dusting as compound of soil deflation is investigated. Are processed prediction estimations of potential soil losses from deflation in Northern Steppe of Ukraine depending on a relief, granulometrical structure of the top layer of soil, crumbing, coherence in view of protective action field-protective wood strips, is proved the offers concerning soil protection of Northern Steppe of Ukraine. Practical results - the dependence between speed of movement the machine-tractor units and formation of erosive soil particles is established. Is determined and proved the mechanisms of air-cole flow transformation during display the daily deflation or agrotechnical dusting. The device for diagnostics of daily soil deflation is developed and tested; the forecast of deflation evolution for the territory of Ukrainian Northern Steppe is carrying out. Novelty - for the first time in Ukraine the quantitative parameters of daily deflation (agrotechnical dusting), speed of mass movement for soil particles <0,25 mm of chernozem ordinary heavy-loaming in field and laboratory conditions are determined. Is received the dependence between speed of movement the machine-tractor unit and erosive particles formation. Is determined and proved mechanisms of air-cole flow transformation during display the daily deflation (agrotechnical dusting). The agrotechnical dusting factor is estimate and the place of this phenomenon in general processof soil losses from deflation is determined. Degree of application - the results of research are used in the network of NSC " Institute for soil science and agrochemistry research named after A.N. Sokolovsky"; the basic positions of dissertation are used in the system of agriculture of a steppe zone of Ukraine and in agricultural production of the Kharkov area; the theory of deflation processes development is entered into research-education process of Eastern-Ukraine national university named after V. Dal'; the patent on soil conservation method contour-stripping soil cultivation for Northern Steppe of Ukraine is received. The field is agricultural and scientific-educational.