Influences of different irrigation rates on some physiological parameters of various cotton varieties were assessed in Diyarbakır conditions, located in the Southeast Anatolia region of Türkiye. Three different cotton varieties (FiberMax, Stoneville 468 and Kartanesi) were evaluated in the years 2017 and 2018 under three levels of drip irrigation. The data acquired from Class-A pan evaporation included the treatments of I50 (50% water stress), I75 (25% water stress), and the fully irrigated. In the study, the application of water stress resulted in decreased fiber yield, chlorophyll content, normalized difference vegetation index value (NDVI) photosynthesis rate, stomatal conductance, and transpiration rate. In contrast, canopy temperature values increased. In the two-year study, it was revealed that water stress adversely affected cotton fiber yield and many physiological parameters. In light of these findings, it was concluded that water stress should be avoided to achieve optimum efficiency in cotton production.
That trial was financially supported by the Republic of Türkiye the Ministry of Agriculture and Forestry. TAGEM (General Directorate of Agricultural Research and Policies) with TAGEM/TBAD/A/18/A7/P5/192 project number and also funded by the Scientific Research Projects Coordination Unit of Siirt University with the project number 2017-SIUFEB-DR-25.
| Primary Language | English |
|---|---|
| Subjects | Irrigation Systems |
| Journal Section | Research Article |
| Authors | |
| Submission Date | April 10, 2025 |
| Acceptance Date | June 1, 2025 |
| Early Pub Date | June 30, 2025 |
| Publication Date | June 30, 2025 |
| Published in Issue | Year 2025 Volume: 9 Issue: 1 |