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Climate change may impact on cotton growth and development through increases in atmospheric carbon dioxide concentration, reduced water availability, increased atmospheric evaporative demand (lower humidity), and increases in temperature. Increased carbon dioxide levels may increase photosynthesis and water use efficiency leading to higher yields in the absence of water stress. The increases in atmospheric evaporative demand may increase water use in well-watered crops and increase the impact of stress when water is limited. The temperature increases at the start and end of seasons may have a positive effect on yield by extending time for cotton growth. An increase in the frequency of days with very high temperatures will negatively impact on both growth and development. Climate change will impact on many facets of cotton physiology. An integrative research process is needed to assess the exact effect of climate change on cotton production.
|Pages:||41 - 45|
carbon dioxide, carbon dioxide enrichment, climatic change,cotton, crop yield, growth, humidity, irrigation, photosynthesis, plantdevelopment, plant water relations, water use efficiency, Gossypium,Malvaceae, Malvales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, carbon assimilation, carbon dioxide fixation, climatechange, watering, Field Crops (FF005) (New March 2000), Plant Physiologyand Biochemistry (FF060), Plant Water Relations (FF062), Soil WaterManagement (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management], Meteorology and Climate (PP500)