期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2020
卷号：39
期号：20
页码：67-71
DOI：10.9734/cjast/2020/v39i2030809
语种：English
出版社：Sciencedomain International
摘要：A field experiment was carried out at the Agricultural CollegeandResearch Institute, Coimbatore in research farm during samba season 2018-2019 to assess the water use and its efficiency in different rice varieties comprising aromatic rice, land races, popular cultivars and recent released variety under modified irrigation practices. The experimental design was a split plot with three replications. The main plots with contionous flooding and modified irrigation practices and sub plots with eight varieties as treatments viz., (S1) Kalanamak, (S2) Jeeragasamba, (S3) Kavuni, (S4) Mappilaisamba, (S5)Improved TNAU White ponni, (S6) Bhavani, (S7) CO 51 and (S8) CO 52. Irrigation practice of alternate wetting and drying, monitoring with field tube registered lower consumption of water (900 mm) with less number of irrigation(14), higher water use efficiency (7.3 kg ha-1mm-1) and water productivity (1682 lit.kg-1) in rice, compared to flood irrigation practices. In Sub plot with different rice varieties viz., aromatic, landraces, popular cultivar and recently released rice variety among these varieties the recent released variety CO52 recorded higher grain yield (6.6 t ha-1), compared to other varieties.
关键词：Irrigation practices;water use efficiency;water productivity.
