Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname.

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dc.contributorADRIANO STEPHAN NASCENTE, CNPAF; RUBY KROMOCARDI, MINISTRY OF AGRICULTURE, Paramaribo, Suriname.
dc.creatorNASCENTE, A. S.
dc.creatorKROMOCARDI, R.
dc.date2017-08-25T19:07:45Z
dc.date2017-08-25T19:07:45Z
dc.date2005-04-20
dc.date2017
dc.date2017-08-25T19:07:45Z
dc.date.accessioned2026-07-01T00:03:15Z
dc.descriptionThe upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.
dc.identifierActa Amazonica, Manaus, v. 47, n. 3, p. 185-194, 2017.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/203846
dc.identifier10.1590/1809-4392201603374
dc.identifier.urihttp://hdl.handle.net/123456789/396355
dc.languageeng
dc.rightsopenAccess
dc.subjectArroz
dc.subjectOryza sativa
dc.subjectMelhoramento genético vegetal
dc.subjectVariedade
dc.subjectNitrogênio
dc.subjectFósforo
dc.subjectPotássio
dc.subjectFertilizante
dc.subjectSuriname
dc.titleGenotype selection and addition of fertilizer increases grain yield in upland rice in Suriname.
dc.typeArtigo de periódico

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