Data/hora: 25/06/2024 00:24:58

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Pecuária Sudeste.
Data corrente: | 11/12/2009
Data da última atualização: | 15/03/2023
Autoria: | MOREIRA, A.; FAGERIA, N. K.
Afiliação: | ADONIS MOREIRA, CPPSE; NAND KUMAR FAGERIA, CNPAF.
Título: | Yield, uptake, and retranslocation of nutrients in banana plants cultivated in upland soil of central amazonian.
Ano de publicação: | 2009
Fonte/Imprenta: | Journal of Plant Nutrition, London, v. 32, n. 3, p. 443-457, mar. 2009.
DOI: | 10.1080/01904160802660750
Idioma: | Inglês
Conteúdo: | Banana cultivation is considered one of the most important agricultural activities of economic and social importance in Brazil. The objective of this work was to investigate the uptake, retranslocation and the effect of fertilization on the yield and uniformity of banana bunches (Musa spp.) cultivated in Central Amazonian, region with approximately 1.5 million km2 or 150 million hectares. Two experiments were conducted in a Xanthic Ferralsol (dystrophic Yellow Latosol), the predominant soil of the region, examining: i) the nutrient uptake and translocation rate in twelve plants; and ii) the efficiency of zinc use, in a completely randomized blocks in a 4×2 factorial scheme in split plot design with four zinc sulfate (ZnSO4) rates (0, 30, 60, and 120 g plant?1 cycle?1) and two application times (in the hole together with the seedling or as surface broadcast in the fifth month after planting), with four replicates. Uptake of macronutrients was in the order of potassium (K) > nitrogen (N) > calcium (Ca) > magnesium (Mg) > phosphorus (P) and micronutrients in the order of manganese (Mn) > iron (Fe) > boron (B) > zinc (Zn) > copper (Cu). The N, P, K, Mg, and Cu have a high retranslocation rate compared to other nutrients investigated. The bunch yield increased significantly in a quadratic fashion with increasing Zn rate and hole application method of zinc was more efficient compared to broadcast application. At high concentration, Zn presents a low mobility in the phloem from the leaves to the fruits. The critical leaf concentration of zinc at the start of inflorescence was 12.9 mg kg?1.
Palavras-Chave: | Amazonas; Critical zinc concentration; Mobility nutrients; Musa spp; Plant nutrients.
Thesagro: | Banana; Musa sp; Nutriente; Solo.
Thesaurus Nal: | Plant nutrition.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)

Exemplares:

CPPSE - (18883-1) - UPC - AP - DD - PROCI-2009.00262 - MOR - 2009.00262 - DIS
CNPAF - (29481-1) - UPC - AP - PP - 2009.068 -  - 2009.068 - DIS