Irrigation water productivity of rice grown with resource conservation technologies
Date
2010
Authors
Kukal, S. S.
Humphreys, Elizabeth
Yadav, Sudhir
Singh, Yavinder
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings 19th World Congress of Soil Science: Soil solutions for a changing world, Brisbane, Australia, 1-6 August, 2010 / R. J. Gilkes and N. Prakongkep (eds.): pp.28-31
Statement of Responsibility
S. S. Kukal, E. Humphreys, S. Yadav and Yadvinder-Singh
Conference Name
World Congress of Soil Science (19th : 2010 : Brisbane, Queensland)
Abstract
Rice being one of the biggest users of world’s developed fresh water resources, the agricultural scientists are facing a big challenge to improve its irrigation water productivity (WPIW) so as to arrest the declining surface and ground water resources. Different resource conservation technologies (RCTs) are being developed and evaluated for their suitability both in submerged and aerobic system of rice production. This paper highlights the irrigation water use when practising the resource conservation technologies under different irrigation scenarios. The intermittent irrigation scheduling on the basis of soil matric tension (16 kPa at 20 cm depth) could save irrigation water by 30%. Growing of puddle transplanted rice (PTR) on raised beds does not help save irrigation water when similar irrigation schedules are followed in both in direct seeded rice (DSR) and PTR with full furrow-depth of irrigation water. Applying water with half furrow depth could help in improving irrigation water productivity. The water balance for direct-seeded rice needs to be computed under differential irrigation scenarios to achieve highest irrigation water productivity.
School/Discipline
School of Agriculture, Food and Wine
Dissertation Note
Provenance
Description
Access Status
Rights
© 2010 19th World Congress of Soil Science, Soil Solutions for a Changing World 1 – 6 August 2010, Brisbane, Australia.