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dc.contributor.authorArregocés, Oscar
dc.date.accessioned2017-10-12T08:03:16Z
dc.date.available2017-10-12T08:03:16Z
dc.date.issued1983
dc.identifier.citationArregocés, Oscar. 1983. Evaluación de la eficiencia agronómica de cuatro formas de urea en el cultivo del arroz. Arroz (Colombia). 32(326):19-31.
dc.identifier.urihttps://hdl.handle.net/10568/88513
dc.description.abstractNitrogen is the nutrient with greatest influence on yield and cost production of rice; it is then necesary to look for its most efficient use. Three field experiment were carried out to determine the agornomic efficiency of four urea forms (prilled, forestry grade, supergranules and sulfur-coated) at different rates and plant growth stages of CICA 8 variety. Results indicate that application before of three urea form-sulfurcoated urea excepted-brings about the loss of nitrogen; the related rice yield thus depended on the native nitrogen. Puddling allows a better plant use of soil nitrogen and increases rice yield by 76 percent with respect to dry soil planting but does not improve applied nitrogen efficiency. Split applicatin of 100 kg/ha N of all the above urea forms (1/3 before planting and 2/3 at panicle onset) increases the applied nitrogen absorption and greatly enhances nitrogen agronomic efficiency. Similar application of sulfurcoated urea increase rice yield by 20 percent and also improve nitrogen agronomic efficiency (44.0) when compared to the conventional system (27.4)
dc.language.isoes
dc.sourceArroz (Colombia)
dc.subjectRICE
dc.subjectFERTILIZERS
dc.subjectFERTILIZER APPLICATION
dc.subjectNITROGEN FERTILIZERS
dc.subjectUREA
dc.subjectVARIETY TRIALS
dc.subjectYIELD COMPONENTS
dc.subjectYIELDS
dc.subjectARROZ
dc.subjectABONOS
dc.subjectAPLICACIÓN DE ABONOS
dc.subjectABONOS NITROGENADOS
dc.subjectUREA
dc.subjectENSAYOS DE VARIEDADES
dc.subjectCARACTERES DE RENDIMIENTO
dc.subjectRENDIMIENTO
dc.titleEvaluación de la eficiencia agronómica de cuatro formas de urea en el cultivo del arroz
dc.typeJournal Article
cg.subject.ciatRICE
cg.identifier.statusLimited Access


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