Effect of Environmental Factors on Fiber Properties and Yield of Deltapine Cottons¹

Abstract

Synopsis Fiber strength of Deltapine 15 was significantly correlated with all climatic factors studied except minimum temperature for the period July 6 to Sept. 13 of the years 1945 to 1955. Fiber length was correlated significantly with maximum minus minimum temperature and rainfall for the period July 6 to August 23. Lint percentage was not highly correlated with any of the factors. The average yield of the cottons tested was negatively associated with rainfall in June. A stress‐index based on the difference between maximum and minimum temperature and rainfall is advanced.