Abstract
This study was conducted to evaluate the effect of different water depths on the growth and yield of rice crop. Experiment was carried out in containers having an area of 0.64 m2 and the volume of 0.57 m3 at laboratory. Four water depths of 5, 10, 15 and 20 cm were taken in account; each water depth was replicated three times. This study was conducted in controlled condition to avoid the impact of rain. Result indicated that 5 cm is optimum water depth for vegetative and mid stage (transplanting to mid drainage) of the rice crop growth, while 10 cm water depth is appropriate for mid drainage till late stage (mid drainage to harvesting) of the rice crop and the same (10 cm) is found suitable for maximum yield. Key words: Water depth, rice crop, containers, plant growth, yield.
Highlights
Rice is an aquatic crop and mostly grown under submergence or variable ponding conditions
Result indicated that 5 cm is optimum water depth for vegetative and mid stage of the rice crop growth, while 10 cm water depth is appropriate for mid drainage till late stage of the rice crop and the same (10 cm) is found suitable for maximum yield
The similar water depth was applied in all the containers for first 2 weeks to avoid the damage of transplanted plants, whereas significant difference (p < 0.05) was observed in height of plants at the mid stage
Summary
Rice is an aquatic crop and mostly grown under submergence or variable ponding conditions. Variations in water depth due to irregularity of leveling, especially in large size paddy fields, often affect rice growth and yield (Anbumozhi et al, 1998). Effects of deeper ponding water depth on plant growth have received renewed attention because of the subsurface irrigation and water table conditions in large sized paddy fields (Murugaboopathi et al, 1991; Anbumozhi et al, 1994). Water depth is an important parameter for the prediction of rice growth. The simulation growth model without inclusion of water depth tends to over predict rice shoot dry mass production (Caton et al, 1999). The morphological cause of yield reductions in rice crop under partial submergence has been attributed to impaired tillering (Yoshida, 1981)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
