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Impact of water management on yield and water productivity with system of rice intensification (SRI) and conventional transplanting system in rice

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Title Impact of water management on yield and water productivity with system of rice intensification (SRI) and conventional transplanting system in rice
Not Available
 
Creator Thakur, A.K.
Rajeeb Kumar Mohanty
Dhiraj U. Patil
Ashwani Kumar
 
Subject Conventional transplanting system
Irrigation
Rice
System of rice intensification
Water productivity
 
Description Not Available
The system of rice intensification (SRI) reportedly enhances yield with less water requirement. This claim was investigated to determine the effects of alternative cultivation methods and water regimes on crop growth and physiological performance. Treatment combinations compared SRI with the conventional transplanting system (CTS) using standard practices, evaluating both along a continuum from continuous flooding to water applications at 1, 3, 5, or 7 days after disappearance of ponded water (DAD), subjecting plants to differing degrees of water stress while reducing total water expenditure. SRI methods gave significant changes in plants’ phenotype in terms of root growth and tillering, with improved xylem exudation and photosynthetic rates during the grain-filling stage compared to CTS. This resulted in significant increases in panicle length, more grains and more filled grains panicle-1, greater 1,000-grain weight, and higher grain yield under SRI management. Overall, averaged across the five water regimes evaluated, SRI practice produced 49 % higher grain yield with 14 % less water than under CTS; under SRI, water productivity increased by 73 %, from 3.3 to 5.7 kg ha/mm. The highest CTS grain yield and water productivity were with the 1-DAD treatment (4.35 t/ha and 3.73 kg ha/mm); SRI grain yield and water productivity were the greatest at 3-DAD (6.35 t/ha and 6.47 kg ha/mm).
Not Available
 
Date 2018-07-26T06:52:05Z
2018-07-26T06:52:05Z
2013-09-17
 
Type Research Paper
 
Identifier 12
1611-2490
http://krishi.icar.gov.in/jspui/handle/123456789/6300
 
Language English
 
Relation Not Available;
 
Publisher Springer