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Titolo:
Simulation of water harvesting potential in rainfed ricelands using water balance model
Autore:
Panigrahi, B; Panda, SN; Mull, R;
Indirizzi:
Indian Inst Technol, Dept Agr & Food Engn, Kharagpur 721302, W Bengal, India Indian Inst Technol Kharagpur W Bengal India 721302 1302, W Bengal, India Univ Hannover, Inst Water Resources Hydrol & Agr Engn, D-30167 Hannover, Germany Univ Hannover Hannover Germany D-30167 r Engn, D-30167 Hannover, Germany
Titolo Testata:
AGRICULTURAL SYSTEMS
fascicolo: 3, volume: 69, anno: 2001,
pagine: 165 - 182
SICI:
0308-521X(200109)69:3<165:SOWHPI>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
AREAS; RICE;
Keywords:
economic analysis; probability; rainfed rice; simulation; supplemental irrigation; surface runoff; water balance; water harvesting;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Panda, SN Indian Inst Technol, Dept Agr & Food Engn, Kharagpur 721302, W Bengal, India Indian Inst Technol Kharagpur W Bengal India 721302 ngal, India
Citazione:
B. Panigrahi et al., "Simulation of water harvesting potential in rainfed ricelands using water balance model", AGR SYST, 69(3), 2001, pp. 165-182

Abstract

Using daily water balance simulation in rainfed ricelands, the study estimates the probable supplemental irrigation (SI) requirement to meet the water deficits during the reproductive stage of rice and surface runoff (SR) generated that can be harvested in OFR for meeting the aforesaid SI. Value ofSI of rice during reproductive stage at 25% probability of exceedence (PE)was found to be 144 mm., neglecting distribution and application losses. Water harvesting potential of the study area indicates that at 50% PE, 85% of SI of rice can be met from the SR generated from the ricelands and storedin OFR. Rest amount of SI can be met from the direct conservation of rainfall in a lined OFR of 2 m depth with 1:1 side slope occupying 9% ricelands. Economic analysis of OFR irrigation system reveals that OFR of 9% ricelands gives net profit (NP) of Indian Rupees (Rs.) 13445 (US $295.49) for I ha sown with dry seeded rainfed upland rice with benefit-cost ratio (BCR) of 1.25. Values of NP and BCR indicate that investment in OFR irrigation systemis profitable in the study region. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 06:22:33