Aerobic rice: water saving rice production technology

E. Subramanian, G. J. Martin, E. Suburayalu and R. Mohan

Conference Papers from International Water Management Institute

Abstract: Field experiments were conducted at Central Farm, Coimbatore to develop a technology package for aerobic rice cultivation from 2004 to 2007. Among 12 rice varieties evaluated, PMK 3 proved to be the best variety in terms of production. The study of plant population in aerobic rice revealed that 100 hills/m2 (20 x 5 cm) was comparable with 50 hills/m2 (20 x 10 cm) in terms of grain yield. Irrigation at IW/ CPE of 1.2 (with water requirement of 618 mm) registered a grain yield of 4.9 ton/ha and was comparable with the grain yield of 4.8 ton/ha in irrigation at IW/CPE of 1.0 (with water requirement of 556mm). Among the N levels, N at 175 kg/ha produced the highest grain yield of 4183 kg/ha and it was comparable with N at 150 kg/ha (4030 kg/ha). To find out the suitability of aerobic rice in Cauvery delta region, a field experiment was initiated in PAJANCOA & RI, Karaikal to screen suitable rice varieties (ADT 36, ADT 43, ADT 48, PMK 3, MDU3 and ADS 18) for aerobic cultivation in comparison with other rice production systems. The grain yield of rice is higher in transplanting and wet seeding when compared to aerobic rice system. However, the most salient feature of this study is that about 92, 42 and 40.6% of water (including rainfall) was used for evapo-transpiration or consumptive purpose while remaining 8.0, 58.0 and 59.4% of water would have left the root zone as seepage and deep percolation, respectively.

Keywords: Rice; Crop; production; Irrigation; management; Nitrogen (search for similar items in EconPapers)
Date: 2008
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