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IJSTR >> Volume 5 - Issue 10, November 2016 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Evaluation For High Water Productivity And Yield Assessment Of Lowland Paddy Rice Under Controlled Drainage And Irrigation Using The System Of Rice Intensification (SRI)

[Full Text]



Victoriano Joseph Pascual, Yu-Min Wang



Agriculture, climate change, drainage, irrigation, rice, SRI, water productivity



The pressure to limit water supply in irrigated agriculture while producing more food with less water is being exacerbated by population growth and climate change. Rice is a very important and valuable crop to Taiwan’s economy; but production is being hampered by water shortage. This research was therefore conducted during the rainy season with the intent of saving irrigation and rain water while maintaining a suitable drainage depth for sustaining rice yield under SRI management. Three different drainage depths T2cm, T4cm, T6cm and a control Tsat was used alongside irrigation under a complete randomized block design having four replications. Results revealed water reduction after panicle initiation significantly affected plant height in T2cm and T4cm, and grain yield in T2cm. The lowest grain reduction (4.92%) and grain production loss (0.09 kg) was produced by T4cm.The highest total water productivity (0.52kg/m3) and irrigation water productivity (1.88 kg/m3) was produced in T2cm followed by T4cm (0.44 kg/m3) and (1.14kg/m3) respectively. The draining of excess rainfall at 4cm depth and providing irrigation of the same amount provided the best results under SRI management in terms of yield and irrigation water saving.



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