Effect of water deficit on growth and yield of sweet sorghum | ผลของการขาดน้ำที่มีต่อการเจริญเติบโตและผลผลิตของข้าวฟ่างหวาน
2009
Pornpun Yanaso(สถาบันเทคโนโลยีพระจอมเกล้าเจ้าคุณทหารลาดกระบัง คณะเทคโนโลยีการเกษตร ภาควิชาเทคโนโลยีการผลิตพืช) | Somyot Detpiratmongkol(King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology. Department of Plant Production Technology)
Lack of water is one of the main constraint to plant growth and crop yield. Thus, the aim of this research was to study the effect of water deficit on growth and yield of sweet sorghum. The experiment was conducted under field condition at Faculty of Agricultural Technology, KMITL, during April to August, 2008. A split plot in randomized complete block design with three replications was employed. Main plots was 18 sweet sorghum cultivars and water deficit and non-water deficit were as sub plots. The results shown that among 18 sweet sorghum cultivars, plant height, stem dry weight and stem fresh weight yield of E36-1 cultivar was the highest whereas ICSR 93031 cultivar was the lowest. Water deficit caused stomata close, decreased total stomata conductance, transpiration rate and relative water content while increased leaf temperature. Water deficit mainly affected growth and yield of sweet sorghum. Water deficit reduced plants height, stem dry weight and stem fresh weight yield. Non-water deficit did not affect growth and yield of sweet sorghum. However, it was not found the relationship between sweet sorghum cultivars and water deficit.
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