Analysis of coffee (Coffea arabica L.) performance in relation to radiation levels and rates of nitrogen supply I. Vegetative growth, production and distribution of biomass and radiation use efficiency

Adugna Debela Bote, Biruk Ayalew, Fikre L. Ocho, Niels P.R. Anten, Jan Vos

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Intensively managed full-sun coffee (Coffea arabica L.), is potentially highly productive, but has shown disappointingly low yield performance, as adequate resource supplies (especially plant nutrition) are needed to sustain the productivity. In order to underpin rational radiation and nutrient management, the current study focussed on growth and development of 2.5 years old trees in relation to nitrogen supply in combination with several degrees of radiation. Three coffee varieties were grown under four levels of radiation (30–100% full sun) and four rates of nitrogen supply (0–88 g tree−1 y−1), arranged in a randomized split-split plot design at Jimma University horticultural farm, Ethiopia, and their biomass increment (growth) and allocation, and crown characteristics were measured. Growth responded positively to both radiation and nitrogen supply, with positive interactions for several plant attributes (including number and length of branches, numbers of pairs of leaves per branch, radiation use efficiency). Plant height and area per leaflet declined with higher radiation level, while the positive effect of larger N supply on these attributes declined with increase in radiation. Branch length and leaf dry weight showed the most positive plasticity in response to higher radiation. Specific leaf area declined from 187 in shade (reducing sunlight to 30%) to 109 cm2 g−1 in full sun without effect of N. Positive effects of nitrogen on growth and biomass production were mediated through higher radiation-use efficiency, RUE, ranging from 0.23 to 0.46 g MJ−1 (PAR). Variables associated with dry matter partitioning were modestly responsive to either N or radiation. All these responses were consistent across the three varieties. The study enhanced the understanding of vegetative growth and biomass production of coffee trees and explored traits that underlie these patterns. The study also yielded essential information for managing shade and nitrogen supply in both open sun and agroforestry systems and yielded basic information for developing coffee growth models

Original languageEnglish
Pages (from-to)115-122
JournalEuropean Journal of Agronomy
Volume92
DOIs
Publication statusPublished - Jan 2018

Fingerprint

light use efficiency
radiation use efficiency
Coffea arabica
coffee
vegetative growth
nitrogen
biomass
biomass production
shade
nutrient management
dry matter partitioning
plant nutrition
agroforestry
Ethiopia
growth models
tree crown
rate
analysis
radiation
distribution

Keywords

  • Light extinction
  • Orthotropic stem
  • Plagiotropic branch
  • Radiation interception
  • Shade avoidance

Cite this

@article{63314440ae774b73bdae31a79be7f87f,
title = "Analysis of coffee (Coffea arabica L.) performance in relation to radiation levels and rates of nitrogen supply I. Vegetative growth, production and distribution of biomass and radiation use efficiency",
abstract = "Intensively managed full-sun coffee (Coffea arabica L.), is potentially highly productive, but has shown disappointingly low yield performance, as adequate resource supplies (especially plant nutrition) are needed to sustain the productivity. In order to underpin rational radiation and nutrient management, the current study focussed on growth and development of 2.5 years old trees in relation to nitrogen supply in combination with several degrees of radiation. Three coffee varieties were grown under four levels of radiation (30–100{\%} full sun) and four rates of nitrogen supply (0–88 g tree−1 y−1), arranged in a randomized split-split plot design at Jimma University horticultural farm, Ethiopia, and their biomass increment (growth) and allocation, and crown characteristics were measured. Growth responded positively to both radiation and nitrogen supply, with positive interactions for several plant attributes (including number and length of branches, numbers of pairs of leaves per branch, radiation use efficiency). Plant height and area per leaflet declined with higher radiation level, while the positive effect of larger N supply on these attributes declined with increase in radiation. Branch length and leaf dry weight showed the most positive plasticity in response to higher radiation. Specific leaf area declined from 187 in shade (reducing sunlight to 30{\%}) to 109 cm2 g−1 in full sun without effect of N. Positive effects of nitrogen on growth and biomass production were mediated through higher radiation-use efficiency, RUE, ranging from 0.23 to 0.46 g MJ−1 (PAR). Variables associated with dry matter partitioning were modestly responsive to either N or radiation. All these responses were consistent across the three varieties. The study enhanced the understanding of vegetative growth and biomass production of coffee trees and explored traits that underlie these patterns. The study also yielded essential information for managing shade and nitrogen supply in both open sun and agroforestry systems and yielded basic information for developing coffee growth models",
keywords = "Light extinction, Orthotropic stem, Plagiotropic branch, Radiation interception, Shade avoidance",
author = "Bote, {Adugna Debela} and Biruk Ayalew and Ocho, {Fikre L.} and Anten, {Niels P.R.} and Jan Vos",
year = "2018",
month = "1",
doi = "10.1016/j.eja.2017.10.007",
language = "English",
volume = "92",
pages = "115--122",
journal = "European Journal of Agronomy",
issn = "1161-0301",
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TY - JOUR

T1 - Analysis of coffee (Coffea arabica L.) performance in relation to radiation levels and rates of nitrogen supply I. Vegetative growth, production and distribution of biomass and radiation use efficiency

AU - Bote, Adugna Debela

AU - Ayalew, Biruk

AU - Ocho, Fikre L.

AU - Anten, Niels P.R.

AU - Vos, Jan

PY - 2018/1

Y1 - 2018/1

N2 - Intensively managed full-sun coffee (Coffea arabica L.), is potentially highly productive, but has shown disappointingly low yield performance, as adequate resource supplies (especially plant nutrition) are needed to sustain the productivity. In order to underpin rational radiation and nutrient management, the current study focussed on growth and development of 2.5 years old trees in relation to nitrogen supply in combination with several degrees of radiation. Three coffee varieties were grown under four levels of radiation (30–100% full sun) and four rates of nitrogen supply (0–88 g tree−1 y−1), arranged in a randomized split-split plot design at Jimma University horticultural farm, Ethiopia, and their biomass increment (growth) and allocation, and crown characteristics were measured. Growth responded positively to both radiation and nitrogen supply, with positive interactions for several plant attributes (including number and length of branches, numbers of pairs of leaves per branch, radiation use efficiency). Plant height and area per leaflet declined with higher radiation level, while the positive effect of larger N supply on these attributes declined with increase in radiation. Branch length and leaf dry weight showed the most positive plasticity in response to higher radiation. Specific leaf area declined from 187 in shade (reducing sunlight to 30%) to 109 cm2 g−1 in full sun without effect of N. Positive effects of nitrogen on growth and biomass production were mediated through higher radiation-use efficiency, RUE, ranging from 0.23 to 0.46 g MJ−1 (PAR). Variables associated with dry matter partitioning were modestly responsive to either N or radiation. All these responses were consistent across the three varieties. The study enhanced the understanding of vegetative growth and biomass production of coffee trees and explored traits that underlie these patterns. The study also yielded essential information for managing shade and nitrogen supply in both open sun and agroforestry systems and yielded basic information for developing coffee growth models

AB - Intensively managed full-sun coffee (Coffea arabica L.), is potentially highly productive, but has shown disappointingly low yield performance, as adequate resource supplies (especially plant nutrition) are needed to sustain the productivity. In order to underpin rational radiation and nutrient management, the current study focussed on growth and development of 2.5 years old trees in relation to nitrogen supply in combination with several degrees of radiation. Three coffee varieties were grown under four levels of radiation (30–100% full sun) and four rates of nitrogen supply (0–88 g tree−1 y−1), arranged in a randomized split-split plot design at Jimma University horticultural farm, Ethiopia, and their biomass increment (growth) and allocation, and crown characteristics were measured. Growth responded positively to both radiation and nitrogen supply, with positive interactions for several plant attributes (including number and length of branches, numbers of pairs of leaves per branch, radiation use efficiency). Plant height and area per leaflet declined with higher radiation level, while the positive effect of larger N supply on these attributes declined with increase in radiation. Branch length and leaf dry weight showed the most positive plasticity in response to higher radiation. Specific leaf area declined from 187 in shade (reducing sunlight to 30%) to 109 cm2 g−1 in full sun without effect of N. Positive effects of nitrogen on growth and biomass production were mediated through higher radiation-use efficiency, RUE, ranging from 0.23 to 0.46 g MJ−1 (PAR). Variables associated with dry matter partitioning were modestly responsive to either N or radiation. All these responses were consistent across the three varieties. The study enhanced the understanding of vegetative growth and biomass production of coffee trees and explored traits that underlie these patterns. The study also yielded essential information for managing shade and nitrogen supply in both open sun and agroforestry systems and yielded basic information for developing coffee growth models

KW - Light extinction

KW - Orthotropic stem

KW - Plagiotropic branch

KW - Radiation interception

KW - Shade avoidance

U2 - 10.1016/j.eja.2017.10.007

DO - 10.1016/j.eja.2017.10.007

M3 - Article

VL - 92

SP - 115

EP - 122

JO - European Journal of Agronomy

JF - European Journal of Agronomy

SN - 1161-0301

ER -