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dc.contributorDevkota, K.Pen_US
dc.contributorAcharya, Salinen_US
dc.contributorMcDonald, Andrewen_US
dc.creatorDevkota Wasti, Minaen_US
dc.identifier.citationMina Devkota Wasti, K. P Devkota, Salin Acharya, Andrew McDonald. (1/7/2019). Increasing profitability, yields and yield stability through sustainable crop establishment practices in the rice-wheat systems of Nepal. Agricultural Systems, 173, pp. 414-423.en_US
dc.description.abstractThe rice-wheat rotation is the dominant cropping pattern in the Terai ‘food basket’ of Nepal. Current production practices require significant labor, water, and energy which erode profitability and, hence, incentives for intensification. Dry direct seeded rice (DSR) and zero tillage wheat (ZTW) have been widely tested on experiment stations as alternative establishment technologies in South Asia. However, adoption at the farm level is low, perhaps in part due to the absence of systematic technology assessment across production ecology gradients under ‘real world’ conditions. A series of participatory on-farm experiments were conducted over seven-years (2011–2017) for performance verification and refinement of DSR and ZTW technology in the western Terai region of Nepal. DSR and ZTW produced a similar or higher grain yield with lower total production cost (by $ 160 ha−1 in DSR and $ 70 ha−1 in ZTW); and higher water productivity (by 4–18% in DSR and 30% in ZTW) and net profit (by $ 122–232 ha−1 in DSR and $ 115 ha−1 in ZTW) as compared to conventional practices. When early rainfall is deficient, DSR permits timely establishment which significantly boosts yields and produced stable yield with farmers' adoption. Agronomic adjustments to DSR practices further boosted performance, with pre-sowing irrigation followed by shallow tillage reducing early weed pressure (by 30–45%) and increasing grain yield in contrast to DSR established with post-sowing irrigation. DSR can be cultivated using the same varieties and fertilizer rates as PTR, whereas ZTW can be cultivated using the same variety as conventionally tilled wheat, but fertilizer rates should be adjusted. When adopted in tandem, results confirm that DSR followed by ZTW increased rice-wheat system productivity by 0.5 to 1.9 t ha−1, reduced total production cost by $ 237 ha−1, and increased net profit by $ 347–572 ha−1 and minimized the climatic risk compared to conventional practices in rainfed or limited irrigation areas. While the benefits are clear, coordinated efforts are required to overcome technology scaling bottlenecks that have kept adoption rates of these technologies at a nascent state in Nepal.en_US
dc.publisherElsevier Massonen_US
dc.sourceAgricultural Systems;173,(2019) Pagination 414-423en_US
dc.subjecton-farm evaluationen_US
dc.subjectdry direct seeded riceen_US
dc.subjectpuddled transplanting riceen_US
dc.subjectzero tillage wheaten_US
dc.subjectclimatic risken_US
dc.titleIncreasing profitability, yields and yield stability through sustainable crop establishment practices in the rice-wheat systems of Nepalen_US
dc.typeJournal Articleen_US
cg.creator.idDevkota Wasti, Mina: 0000-0002-2348-4816en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_US
cg.contributor.centerAfrica Rice Center - AfricaRiceen_US
cg.contributor.centerInternational Rice Research Institute - IRRIen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionSouthern Asiaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalAgricultural Systemsen_US

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