Effect of potassium fertilization in 'Rica' guava (Psidium guajava) cultivation

• Autor(a) principal: Natale, W. [UNESP]
• Data de Publicação: 1996
• Outros Autores: Coutinho, E. L.M. [UNESP], Boaretto, A. E. [UNESP], Pereira, F. M. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/219750

A field experiment was conducted from 1989-90 to 1991-92 to study theeffect of potassium fertilization on guava (Psidium guajava L.). using 1-year-old plants of 'Rica', grown in a Kanhapludalf soil in the Jaboticabal region, in Brazil. During the first year the K doses used were: 0, 24.9, 49.8, 99.6, 149.4 and 199.2 g K/plant, which were doubled during the second year and tripled during the third. In the third year the increase in K level showed positive response in yield. About 90% of the maximum yield observed was associated with 527 g K/plant and with a leaf content of 18.9 g K/kg.