CALCULATION AND VISUALIZATION OF WATER CONSUMPTION RATES OF CROPS WHEN USING INFORMATION TECHNOLOGIES

The article analyzes existing approaches to determining water consumption rates of crops for irrigation in Ukraine. They were estimated at the level of weather stations and regions, in view of climate change and the need for their constant updating using the developed automated system and information technologies. It was found that water need for growing crops has increased significantly, especially in the southern regions of Ukraine. This work is a continuation of the study of evapotranspiration, its components and dynamics based on remote sensing data and calculations when using the Penman-Monteith-Leuning method. The obtained results are presented in an interactive database and as visualized cartographic information. The rate calculation was carried out based on the potential evapotranspiration for the period 2005–2024, when using the biophysical Shtoiko method, which allows determining water consumption rates taking into account a natural moisture deficit. Meteorological data from regional weather stations operating in automatic mod as well as the information systems developed at the Institute of Water Problems and Land Reclamation were used for calculations. Water consumption was estimated based on water balance equations and multi-year series of agricultural and meteorological observations. The average annual sowing dates and development phases of the main crops in the regions of Ukraine were also specified, with reference to weather stations, and the maps of water consumption spatial distribution were built. A database of crop water consumption rates was created with integrating geospatial parameters. Python software was developed using the Folium, Shapely, and Django libraries for data analysis and visualization. For geospatial presentation of the results, the zones of weather stations influence were calculated using the Thyssen-Voronyi polygon method. The study revealed a significant increase in water consumption rates for crops in Ukraine over the past two decades compared to the control climatic period of 1960-2000. In the Steppe zone, water consumption increased by 40%, in the Forest-Steppe and Polissya zones - by 15%. Data analysis for 2005-2024. Analysis of data for 2005-2024 confirmed a further increase in water consumption in all climatic zones by an average of 18-25%. Combining these data with web tools increases the availability of information and promotes its practical use in agriculture. Maps of water consumption deficits for the warm period of the year, water consumption rates for corn and wheat for the years of 50%, 75% and 95% water supply deficit, which reflect regional variability in their distribution, were built. The study confirmed the need for constant updating of water consumption rates and their consideration in planning agricultural policy and water management.