Comparison of real plant water consumption values and reference plant water consumption values of wheat plant under Tekirdağ conditions

In this study, it was aimed to determine the plant water consumption of wheat between the spring months, when plant water use increases, and the harvest. In addition, it was aimed to determine the most appropriate method by comparing the Penman-Monteith and Blaney-Criddle methods, which are reference plant water consumption methods that can give good results under regional conditions, with the actual plant water consumption results. In the 2018-2019 wheat growing season, soil moisture measurements started at the end of March and continued until harvest at approximately 7-day intervals. Soil moisture monitoring was carried out on a gravimetric basis every 30 cm to a depth of 90 cm. 395 mm of precipitation fell during the growing period, and 95 mm of precipitation was measured during the measurement period. The average plant water consumption results calculated according to the water budget method were determined as 291.61 mm. While the reference plant water consumption value obtained by the Penman-Monteith method, one of the reference plant water consumption methods, was 272.22 mm, it was obtained as 251.1 mm according to the Blaney-Criddle method. The Penman-Monteith method gave results closer to the actual plant water consumption results. Therefore, it can be recommended to use the reference plant water consumption results obtained from the Penman-Monteith method in wheat irrigation in the region.