The effect of climate on irrigated cotton yields under semi-arid conditions: Temperature-yield relationships
✍ Scribed by J. Lomas; M. Mandel; Z. Zemel
- Publisher
- Elsevier Science
- Year
- 1977
- Weight
- 906 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0002-1571
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✦ Synopsis
Lomas, J., Mandel, M. and Zemel, Z., 1977. The effect of climate on irrigated cotton yields under semi-arid conditions: Temperature--yield relationships. Agric. Meteorol., 18: 435--453.
Multivariate temperature yield analysis of commercial cotton production in the central coastal plain of Israel using Fisher's (1924) method clearly shows a wave-like response. Weekly maximum temperatures accounted for 28% and weekly minimum temperatures for 14% of the variability of cotton yields.
During the early stages of growth the positive response to lower minimum temperatures remains unexplained. During the main flowering period maximum temperatures above 29°C are required for higher cotton yields. While the flowering period indicates potential yield conditions, the boll formation period determines the extent to which this potential is realized. For optimum boll development mean maximum temperatures below 30°C are required. This period is, however, less significant under local climatic conditions, due to the relatively stable climate at the time (mean maximum 30.5 + 0.7°C and mean minimum 19.2 + 1.0°C). During the final ripening and harvesting period warm and rain-free weather will permit the cotton yield grown to be harvested under favourable climatic conditions.