Potential yield and nutrient requirements of direct-seeded, dry-season rice in Cambodia

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cg.coverage.countryCambodia
cg.coverage.iso3166-alpha2KH
cg.identifier.doihttps://doi.org/10.1017/s0014479719000346
cg.issn0014-4797
cg.issue2
cg.journalExperimental Agriculture
cg.volume56
dc.contributor.authorKong, Kea
dc.contributor.authorHin, Sarith
dc.contributor.authorSeng, Vang
dc.contributor.authorIsmail, Abdelbagi M.
dc.contributor.authorVergara, Georgina
dc.contributor.authorChoi, Il-Ryong
dc.contributor.authorEhara, Hiroshi
dc.contributor.authorKato, Yoichiro
dc.date.accessioned2024-12-19T12:54:06Zen
dc.date.available2024-12-19T12:54:06Zen
dc.identifier.urihttps://hdl.handle.net/10568/164610
dc.titlePotential yield and nutrient requirements of direct-seeded, dry-season rice in Cambodiaen
dcterms.abstractThe area of dry-season rice (Oryza sativa L.) has rapidly increased in Cambodia owing to the large-scale development of irrigation infrastructure. But little is known of potential productivity and adaptive crop management. The objective of our study was to evaluate potential yield and nutrient requirements of dry-season rice in Cambodia, and the economic feasibility of soil-specific management recommended by the government. Field experiments were conducted on four soil types (Bakan, equivalent to Alfisol; Krakor, Inceptisol; Prateah Lang, Plinthustalfs; and Toul Samroung, Endoaqualfs) in four provinces (Battambang, Kampong Thom, Pursat, and Siem Reap) during the 2016 and 2017 dry seasons to compare 14 (2016) and 8 (2017) N-P-K combinations. Grain yield ranged from 1.0 to 5.5 t ha−1 in 2016 and from 1.3 to 6.7 t ha−1 in 2017. Potential yield from the experiments was 6–7 t ha−1 on Toul Samroung soil, 5–6 t ha−1 on Bakan soil, and 3–5 t ha−1 on Prateah Lang and Krakor soils. A rate of 140-60-60 kg ha−1 of N-P2O5-K2O was more than enough to achieve the best yields on any soil group. On the other hand, modest application rates in soil-specific management (44–78 kg ha−1 of N, 23–28 kg ha−1 of P2O5, 0–30 kg ha−1 of K2O) proved reasonable for resource-poor farmers in Cambodia, since the treatment always provided >75 % of the highest economic profit in high-input plots.en
dcterms.available2019-10-11
dcterms.bibliographicCitationKong, Kea; Hin, Sarith; Seng, Vang; Ismail, Abdelbagi M.; Vergara, Georgina; Choi, Il-Ryong; Ehara, Hiroshi and Kato, Yoichiro. 2020. Potential yield and nutrient requirements of direct-seeded, dry-season rice in Cambodia. Ex. Agric., Volume 56 no. 2 p. 255-264en
dcterms.extentpp. 255-264
dcterms.issued2020-04
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherCambridge University Press
dcterms.subjectagronomyen
dcterms.subjectcrop scienceen
dcterms.typeJournal Article

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