Geoinformation components of sunflower yield simulation in arid climate using the model aquacrop
2021
Summary In Ukraine the crop losses associated with adverse weather and climatic conditions in agriculture can range from 10 to 70%. The main reason for these losses is the drought. In the last decade, the repetition and the duration of hot weather periods in Ukraine increased significantly. The consequences of climate change for agriculture will be related to changes in temperature and humidity conditions, but also to the reduction of soil fertility, desertification, etc. In the conditions of climate change, when water is a key limiting factor in crop production, it is necessary to use modern methodologies of agrometeorological research based on numerical multiparameter models with using a wide range of geographic information resources and technologies. This paper presents the methodology and results of modeling the conditions of heat and moisture supply of sunflower and their impact on the formation of crop productivity in the Kherson region using the model AquaCrop. Correct use of geoinformation parameters, soil and vegetation characteristics allows to obtain reliable results that can be used for early regulation of soil water balance by irrigation.
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