Simulation of yield responses in sugar beet under different climate change scenarious using the lintul multi̇crop model

In recent years, environmental changes such as climate change, global temperature increase and decrease in water resources have been experienced due to the increase in atmospheric CO2 levels. Predicting the effects of these changes on agricultural products is of great importance in terms of adaptation and taking precautions. The study aims to examine the effects of climate change on sugar beet cultivation carried out in 10 different provinces of Türkiye. Using the LINTUL-MULTICROP plant model, yield, plant development and water requirement analyses were carried out under current climate conditions and temperature increase scenarios (2°C and 4°C) and when CO2 level was increased by 200 ppm. The findings show that temperature increase decreases day of emergence and cover level and increases harvest time. While it was observed that CO2 increase increased yield in all regions, it was determined that temperature increase caused yield loss in provinces in Csa climate class. While Afyonkarahisar obtained the highest yield with temperature increase, Malatya provided the highest yield with CO2 increase scenario. As a result, increasing temperature in different regions of Türkiye shortens the development periods of sugar beet and increases water requirement. However, increasing CO2 leads to increased efficiency.