Nível de sombreamento, umidade do solo e morfologia do cafeeiro em sistemas agroflorestais

Coelho, Raquel Fernandes; Matsumoto, Sylvana Naomi; Lemos, Carmem Lacerda; Souza, F. A. de

doi:10.1590/s0034-737x2010000100016

Cited by 12 publications

(11 citation statements)

References 22 publications

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“…Também foi observado incremento de AF com o fornecimento de n até a dose correspondente a 122 mg n kg -1 de solo, reduzindo-se nas doses subsequentes (Figura 4). o aumento de AF, em plantas submetidas a ambientes sombreados, deve-se ao incremento da expansão foliar para captar maior quantidade de energia solar disponível, garantindo, assim, seu processo fotossintético (AlMEiDA et al, 2005;SABBi et al, 2010;CoElho et al, 2010). Além disso, o aumento da superfície fotossintetizante é uma forma de as plantas assegurarem um aproveitamento maior das baixas intensidades de radiação luminosa (AgUilERA et al, 2004).…”

Section: Parâmetros De Crescimentounclassified

Características morfofisiológicas de plantas clonais de Passiflora alata crescidas em diferentes doses de nitrogênio e níveis de sombreamento

Freitas¹,

Almeida²,

Lago³

et al. 2012

Rev. Bras. Frutic.

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Plantas clonais de Passiflora alata foram submetidas a quatro níveis de sombreamento (0; 25; 50 e 75%) aos 75 dias após o estaqueamento (DAE). Dez dias após, aplicou-se nitrogênio (N) nas dosagens de 0; 25;50; 100 e 200 mg N kg-1 de solo. Verificou-se, aos 175 DAE, interação significativa (p<0,05) entre níveis de sombreamento (NS) e doses de N, para todos os parâmetros fotossintéticos avaliados. Observou-se um aumento na taxa fotossintética líquida com a elevação de NS e de N até a dose de 146 mg N kg-1. A taxa transpiratória apresentou efeito quadrático tanto para NS quanto para N, tendendo a aumentar com o incremento de NS e N até 50% de sombreamento e 137 mg N kg-1, respectivamente. A espessura dos tecidos do mesofilo foliar foi reduzida com a intensificação de NS. Os teores de clorofila a, b e total aumentaram com a elevação de NS e N. Todos os parâmetros de crescimento analisados não apresentaram diferenças significativas (p<0,05) para a interação NSxN. O maior acúmulo de biomassa seca total foi obtido em 69% de sombreamento e na dose de 113 mg N kg-1, ocorrendo um declínio nos NS nas e doses de N subsequentes. Em suma, os resultados demonstraram que o sombreamento moderado (50%), associado a um suprimento moderado de N, promoveu maior eficiência fotossintética e, consequentemente, incremento na biomassa seca, na planta toda.

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Section: Parâmetros De Crescimentounclassified

Características morfofisiológicas de plantas clonais de Passiflora alata crescidas em diferentes doses de nitrogênio e níveis de sombreamento

Freitas¹,

Almeida²,

Lago³

et al. 2012

Rev. Bras. Frutic.

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“…Coffee was brought to Brazil in 1727, and as early as 1731, there were reports of the first exports of coffee have been found with shade tree intercropping in coffee plantations, such as: increased air humidity (Araújo, Partelli, Oliosi, & Pezzopane, 2016;Partelli et al, 2014); increased soil organic matter (Melloni et al, 2018); lower soil density, penetration resistance, and higher total porosity, microporosity, and soil water content (Souza et al, 2017); decreased nutrient leaching, improved soil fertility, and reduced fertilizer requirements (Babbar & Zak, 1995;Cuenca, Aranguren, & Herrera, 1983;Fassbender, 1987;Jaramillo-Botero et al, 2010); reduced incidence of Cercospora coffeicola (Berkeley & Cooke;Salgado, Macedo, Carvalho, Salgado, & Venturin, 2007), Leucoptera coffeella (Guérin-Mèneville & Perrottet; Teodoro, Klein, Reis, & Tscharntke, 2009), several species of fruit flies (Diptera: Tephritoidea; Aguiar-Menezes et al, 2007), and weeds (Concenço et al, 2014;Silva, Perdoná, Soratto, & Negrisoli, 2013); as well as improvement in the quality of the harvested coffee beans (Vaast, Bertrand, Perriot, Guyot, & Génard, 2006). On the other hand, the following disadvantages can be noted: lower soil moisture in the dry season (Coelho, Matsumoto, Lemos, & Souza, 2010;Neves, Martinez, Souza, & Cecon, 2007), higher incidence of Hypothenemus hampei (Ferrari; Wrigley, 1988), need for pruning to regulate shading provided by trees to coffee plants, and, mainly, limitation of coffee production potential and mechanized cultural practices, especially mechanized coffee harvesting (Perdoná & Soratto, 2016).…”

Section: Introductionmentioning

confidence: 99%

Arabica coffee–macadamia intercropping: Yield and profitability with mechanized coffee harvesting

Perdoná

Soratto

2020

Agronomy Journal

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Arabica coffee (Coffea arabica L.)–macadamia (Macadamia integrifolia Maiden & Betche) intercropping presents benefits at the initial phase; however, coffee yields gradually decline because of shading, and mechanized coffee harvesting may be impeded by the growth of macadamia trees. An experiment was conducted under irrigated conditions in southeastern Brazil to evaluate whether coffee–macadamia intercropping and the use of pruning to allow mechanized coffee harvesting offers agronomic and economic advantages over continuously cropped coffee monoculture (monocropped coffee). In addition, we aimed to evaluate which macadamia cultivar (Hawaiian cultivars; HAES 344, HAES 660, and HAES 816; Brazilian cultivars: IAC 9–20, IAC 4–12B, and IAC 4–20) is most suitable for long‐term intercropping with mechanized coffee harvesting. Hawaiian macadamia cultivars have a narrower canopy, requiring less pruning of the lateral branches to allow the traffic of the mechanical coffee harvester. The macadamia cultivar IAC 4–12B had the highest kernel yield and IAC 4–20 had the lowest yield. Because intercropped treatments have 33.3% fewer coffee plants and their production per plant was reduced by shading, the coffee yield in these treatments was on average 38% lower than that in monocropped coffee. However, due to the sale of the macadamia kernel, coffee–macadamia intercropping was economically superior to coffee monoculture. Depending on the macadamia cultivar, the economic benefit of intercropping was from 9% (IAC 4–20) to 206% (HAES 816 and IAC 4–12B) higher than that achieved with monocrop coffee cultivation.

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“…Another hypothesis for the early maturation could be competition for water among coffee trees and shade trees due to shared soil volume by roots of both species in D1L, such as the case observed by Coelho et al [25]. According to Morais et al [26], hydric stress associated with high temperature can quicken cherries maturation.…”

Section: Resultsmentioning

confidence: 96%

Shade Trees Spatial Distribution and Its Effect on Grains and Beverage Quality of Shaded Coffee Trees

Neto

Morinigo

Guimarães

et al. 2018

Journal of Food Quality

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Shading coffee trees has gained importance, especially among smallholders, as an option to improve the products' quality, therefore acquiring place at the specialty coffee market, where consumers are willing to give bonus for quality. This work aims to evaluate the influence of shade trees' spatial distribution among coffee trees' agronomic characteristics, yield, and beans and cup quality of shaded coffee trees. The experimental design consisted of completely randomized blocks with six repetitions and four treatments: coffee trees on shade trees planting rows, distant one meter from the trunk; coffee trees on shade trees planting row, distant six meters from the trunk; and coffee plants between the rows of shade trees, parallel to the previous treatments. The parameters analyzed were plant height, canopy diameter, plagiotropic branches' length, yield, coffee fruits' phenological stage, ripe cherries' Brix degree, percentage of black, unripe, and insect damaged beans, bean size, and beverage quality. Shade trees quickened coffee fruits' phenological stage of coffee trees nearest to them. This point also showed the best beverage quality, except for overripe fruits. The remaining parameters evaluated were not affected by shade trees' spatial distribution.

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Nível de sombreamento, umidade do solo e morfologia do cafeeiro em sistemas agroflorestais

Cited by 12 publications

References 22 publications

Características morfofisiológicas de plantas clonais de Passiflora alata crescidas em diferentes doses de nitrogênio e níveis de sombreamento

Características morfofisiológicas de plantas clonais de Passiflora alata crescidas em diferentes doses de nitrogênio e níveis de sombreamento

Arabica coffee–macadamia intercropping: Yield and profitability with mechanized coffee harvesting

Shade Trees Spatial Distribution and Its Effect on Grains and Beverage Quality of Shaded Coffee Trees

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