Affiliation:
1. Bangladesh Agricultural Research Institute
Abstract
An experiment was conducted during the 2009-2010 Boro season at the Shahjalal Science and Technology University campus, Sylhet, Bangladesh, to investigate the impact of alternate wetting and drying irrigation (AWDI) on rice production. Using a randomized complete block design (RCBD), four irrigation treatments were applied to a modern variety (MV) of rice (BRRIdhan 28). One control treatment, T0, maintained a continuous standing water depth of 1-5 cm. Water was irrigated to three AWD treatments, T1, T2, and T3 when the water level dropped 10, 20, and 30 cm below ground level, respectively. In spite of the fact that treatment T0 produced the highest grain yield (4.90 t/ha), its water use efficiency was 38.64 kg/ha/cm. Compared to treatment T1, which produced 4.68 t/ha, treatment T1 had a water use efficiency of 41.86 kg/ha/cm. Treatments T2 and T3 yielded 3.96 t/ha and 3.63 t/ha, respectively. When water levels fall below 10 cm below ground level, treatment T1 may be the best option for rice cultivation in conditions of limited water availability.
Publisher
International Journal of Agriculture Environment and Food Sciences
Reference33 articles.
1. Aguilar, M. and F. Borjas. (2005). Water use in three rice flooding management systems under Mediterranean climate conditions. Spanish J. Agril. Res. 3(3): 344-351.
2. Anbumozhi, V., E, Yamaji and T. Tabuchi. (1998). Rice crop growth and yields as influenced by changes in ponding water depth, water regime, and fertigation level. Agril. Water Mgt. 37:241-253.
3. Arthonoitik Somiksha, (2003). Ministry of Finance. Government of the people’s Republic of Bangladesh. Dhaka, Bangladesh.
4. Balasubramanian, R., J. Krishnarajan and S. Ramesh. (2001). Economical use of water for direct seeded rice. Rice Research for Food security and poverty alleviation. Proceedings of the International Rice Research Conference, Los Banos.
5. Bangladesh Institute of Nuclear Agriculture (BINA). (2007). Achievements of Non-Commodity Technologies; Water saving in rice cultivation. Online publication (http://www.bina.gov.bd) of BINA, Mymensingh, Bangladesh.