Data/hora: 10/06/2024 01:08:59

Provedor de dados: | 53
País: | Brazil
Título: | Mineral nutrition and caffeine content in coffee leaves
Autores: | MAZZAFERA,PAULO.
Data: | 1999-01-01
Ano: | 1999
Palavras-chave: | Caffeine; Coffea arabica L.; Mineral nutrition.
Resumo: | The effect of nutrient supply on the caffeine content of coffee (Coffea arabica L.) leaves was investigated. Seeds were germinated in nutrient-agar media lacking N, P, K, Ca, Mg, S, Zn, B or Mo. The control treatment contained all essential nutrients. The caffeine concentration was determined seven months after seed sowing when the seedlings have 3 to 4 pair of leaves. The omission of K induced the highest caffeine content in the leaves (24.5 g.kg-1). Caffeine in the control treatment was 21.9 g.kg -1. Absence of P induced the lowest content, 17.5 g.kg-1.
Tipo: | Info:eu-repo/semantics/report
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051999000200018
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/S0006-87051999000200018
Formato: | text/html
Fonte: | Bragantia  v.58 n.2 1999
Fonte: | info:eu-repo/semantics/openAccess