Micronutrients use efficiency in tropical cover crops as influenced by phosphorus fertilization.

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dc.contributorNAND KUMAR FAGERIA, CNPAF; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; ADRIANO MOREIRA KNUPP, CNPAF.
dc.creatorFAGERIA, N. K.
dc.creatorFERREIRA, E. P. de B.
dc.creatorKNUPP, A. M.
dc.date2015-04-14T11:11:11Z
dc.date2015-04-14T11:11:11Z
dc.date2015-04-14
dc.date2015
dc.date2016-03-29T11:11:11Z
dc.date.accessioned2026-07-01T00:01:16Z
dc.descriptionDeficiency of micronutrients is increasing in the recent years in cropping systems in many parts of the world and cover crops are important components of cropping systems. A greenhouse experiment was conducted to evaluate copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) use efficiency in 14 tropical leg-ume cover crops grown on an Oxisol. The P levels used were low (0 mg kg-1), medium (100 mg kg-1) and high (200 mg kg-1). The P X cover crops interactions were significant for Cu, Fe, Mn, and Zn use efficiency (tops dry weight/unit nutrient uptake). Hence, cover crop species varied in nutrient use efficiency with change in P levels. The micronutrient use efficiency was in the order of Cu > Zn > Mn > Fe. Higher Cu use efficiency was associated with lower uptake of this element, in the cover crop tops compared to other micronutrients. Similar-ly, lower efficiency of Fe and Mn was associated with their higher uptake in the tops of cover crops. Overall, Cu and Mn use efficiency was decreased when P level was raised from low to medium level and then it was constant. Iron use efficiency was increased with increasing P level but Zn use efficiency was constant with the addition of P fertilizer.
dc.identifierRevista Caatinga, v. 28, n. 1, p. 130-137, jan./mar. 2015.
dc.identifier1983-2125
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1013492
dc.identifier.urihttp://hdl.handle.net/123456789/395593
dc.languageeng
dc.rightsopenAccess
dc.subjectAdubo verde
dc.subjectCrotalaria
dc.subjectMucuna
dc.subjectLeguminosa forrageira
dc.subjectGuandu
dc.subjectMicroelemento
dc.subjectPlanta de cobertura
dc.subjectFósforo
dc.subjectGreen manures
dc.subjectCajanus
dc.titleMicronutrients use efficiency in tropical cover crops as influenced by phosphorus fertilization.
dc.typeArtigo de periódico

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