A carregar...
Publicação
Impacts of water availability on macronutrients in fruit and leaves of conilon coffee
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.56 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The objective of this work was to evaluate the concentrations and accumulation of macronutrients
in conilon coffee (Coffea canephora) fruit, and their concentrations in leaves, over two years, in irrigated and
nonirrigated coffee plants. Three-year-old conilon coffee plants of the cultivar Emcapa 8111 genotype 02 were
used. An experimental design was carried out in randomized complete blocks, in a split-plot arrangement, with
14 replicates. The main plot factor was irrigation versus nonirrigation of coffee plants, and the split-plot factor
was different fruit and leaf collection times. Collections began 10 days after the beginning of flowering and were
performed on average every 28 days, until full fruit ripening. At each sampling date, five plants per treatment
were picked out, by collecting one plagiotropic branch by plant, separated into fruit and leaves. Each part was
dried, weighed, and subjected to the chemical analysis. Macronutrient accumulations and their accumulation rates
were determined. According to the regression analysis of the data, fruit macronutrient accumulation curves fit
best to sigmoidal equations. Irrigation affects the macronutrient dynamics in fruit and leaves during the fruiting
phase of conilon coffee, and increases the accumulation of nutrients in the plant tissues. The macronutrients
found in greater quantities are N, K, and Ca, in fruit and leaves, regardless of the irrigation treatment
Descrição
Palavras-chave
coffee mineral nutrition nutrient accumulation water deficit
Contexto Educativo
Citação
Pesq. agropec. bras., Brasília, v.53, n.9, p.1025-1037, Sept. 2018
Editora
EMBRAPA