Data/hora: 11/06/2024 08:03:30

Provedor de dados: | 94
País: | Brazil
Título: | Potassium fertilization for pineapple: effects on soil chemical properties and plant nutrition
Autores: | Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Cantarella,Heitor; Mellis,Estêvão Vicari.
Data: | 2011-06-01
Ano: | 2011
Palavras-chave: | Plant analysis; Soil analysis; Potassium chloride; Potassium sulphate; Ananas comosus; K.
Resumo: | A field experiment was carried out on an Ultisol located at the city of Agudos (22º30'S; 49º03'W), in the state of São Paulo, Brazil, in order to determine the effects of rates and sources of potassium fertilizer on nutritional status of 'Smooth Cayenne' pineapple and on some soil chemical properties. The experiment was a complete factorial design with four rates (0, 175, 350, and 700 kg ha-1 of K2O) and three combinations of K sources (100% KCl, 100% K2SO4 and 40% K2SO4 + 60% KCl). Soil samples were taken from the depths 0-20 cm, 20-40 cm and 40-60 cm at planting and 14 months after. Nutritional status of pineapple plants was assessed by means of tissue analysis. Soil K availability increased with application of K fertilizer, regardless of K sources. Soil chlorine and Cl concentration in pineapple leaves increased with application of KCl or K2SO4+KCl. Plant uptake of potassium was shaped by soil K availability and by the application rates of K fertilizer, independently of K sources.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000200036
Editor: | Sociedade Brasileira de Fruticultura
Relação: | 10.1590/S0100-29452011000200036
Formato: | text/html
Fonte: | Revista Brasileira de Fruticultura  v.33 n.2 2011
Fonte: | info:eu-repo/semantics/openAccess