Data/hora: 21/06/2024 11:34:53

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 14/04/2015
Data da última atualização: | 06/07/2022
Autoria: | FAGERIA, N. K.; FERREIRA, E. P. de B.; KNUPP, A. M.
Afiliação: | NAND KUMAR FAGERIA, CNPAF; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; ADRIANO MOREIRA KNUPP, CNPAF.
Título: | Micronutrients use efficiency in tropical cover crops as influenced by phosphorus fertilization.
Ano de publicação: | 2015
Fonte/Imprenta: | Revista Caatinga, v. 28, n. 1, p. 130-137, jan./mar. 2015.
ISSN: | 1983-2125
Idioma: | Inglês
Conteúdo: | Deficiency 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.
Thesagro: | Adubo verde; Crotalaria; Fósforo; Guandu; Leguminosa forrageira; Microelemento; Mucuna; Planta de cobertura.
Thesaurus Nal: | Cajanus; Green manures.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/122316/1/amk.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (33299-1) - UPC - AP - DD - 2015 -  - 2015 - DIS