Effect of Waterlogging at Different Growth Stages on Growth and Yield in Hibiscus cannabinus (Kenaf), H. sabdariffa (Roselle) and Corchorus olitorius (Jute)

บทคัดย่อ

The objective of this study was to investigate the effects of waterlogging on growth and yield of fiber crops. A greenhouse experiment was conducted at the Agronomy Farm at Khon Kaen University in 2005. The experiment was a 3 x 5 factorial in a completely randomized design with four replications. The two factors were waterlogging treatments (30 DAS, 60 DAS, 90 DAS and 120 DAS for 30 days, and well-drained as the control) and fiber crop species (H. cannabinus, H. sabdariffa and C. olitorius). The results showed that the waterlogging at different growth stages significantly affects the plant height, stem diameter, leaf area, biomass production and root growth. In addition to waterlogging at 30, 60 and 90 days after sowing decreased fiber yield by 48.8, 31.7 and 13.4% compared to the control, respectively. However, waterlogging at 120 days after sowing did not show any significant difference on fiber yield compared to the control.Fiber crop species significantly affected on plant growth and fiber yield. H. cannabinus generally gave the higher plant growth and fiber yield than with H. sabdariffa and C. olitorius.