Ecophysiological constraints on the production of shaded and unshaded coffee: a review

DaMatta, Fábio M.

doi:10.1016/j.fcr.2003.09.001

Cited by 378 publications

(378 citation statements)

References 56 publications

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“…The coffee cultivar grown in Timor Leste, HDT, is a natural hybrid discovered in Timor between Robusta Coffee canephora and Arabica Coffee arabica coffee species, Robusta species have a higher temperature tolerance than Arabica species. Research needs to be conducted to determine whether HDT exhibits its Robusta genetic tolerance for higher temperatures rather than the less tolerant pure Arabica species grown in other parts of the world (DaMatta 2004). Unless the hybrid can adjust to higher temperatures coffee production may have to move to higher areas with steeper slopes to maintain production.…”

Section: Impact Of Climate Change On Cropping Systemsmentioning

confidence: 99%

Climate Change and Population Growth in Timor Leste: Implications for Food Security

Molyneux

Cruz²,

Williams

et al. 2012

AMBIO

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The climate in Timor Leste (East Timor) is predicted to become about 1.5°C warmer and about 10 % wetter on average by 2050. By the same year, the population is expected to triple from 1 to 2.5-3 million. This article maps the predicted changes in temperature and rainfall and reviews the implications of climate change and population growth on agricultural systems. Improved cultivars of maize, rice, cassava, sweet potato and peanuts with high yield performance have been introduced, but these will need to be augmented in the future with better adapted cultivars and new crops, such as food and fodder legumes and new management practices. The requirements for fertilizers to boost yields and terracing and/or contour hedgerows to prevent soil erosion of steeply sloping terrain are discussed. Contour hedges can also be used for fodder for improved animal production to provide protein to reduce malnutrition.

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Section: Impact Of Climate Change On Cropping Systemsmentioning

confidence: 99%

Climate Change and Population Growth in Timor Leste: Implications for Food Security

Molyneux

Cruz²,

Williams

et al. 2012

AMBIO

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“…No entanto, em cultivos de cafeeiros sombreados, observa-se que as plantas devem adaptarse à baixa disponibilidade de radiação e, por isso, em geral, apresentam uma diminuição na produtividade de pelo menos 20% em relação a cafeeiros a pleno sol (FOURNIER, 1988;DA MATTA & RENA, 2002;MORAIS et al, 2003;DA MATTA, 2004). Porém, alguns autores apontam que cafeeiros sob sombra apresentam maiores taxas fotossintéticas, maior crescimento, maior resistência à seca e produções mais constantes ao longo dos anos, uma vez que a redução da radiação pelas árvores e a manutenção do microclima ao longo do ano pode evitar danos por fotoinibição e fotooxidação, reduzindo o efeito da bianualidade sobre a produção (BEER et al, 1997;FAHL et al, 1989;FREITAS et al, 2003;CAMPANHA et al, 2004).…”

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Alterações morfofisiológicas em folhas de Coffea arabica L. cv. "Oeiras" sob influência do sombreamento por Acacia mangium Willd

et al. 2008

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“…It was observed, however, that quality of these seeds was favored by shading, presenting better vigor when under 35% and 50% protection of solar radiation (Table 1). According to DaMatta (2004), reduction on productivity and higher "investment" of plants in their vegetative growth occur on shaded coffee plantations. As consequence of small number of beans per plant, these receive higher amounts of photosynthates, which allow for increases on their weight and can also influence chemical composition and vigor when produced under shading.…”

Section: Resultsmentioning

confidence: 99%

“…Its adaptation to shaded conditions favors its cultivation in agroforestry systems, a practice widely used in the majority of Latin-American producing countries (DaMatta, 2004;Morais et al, 2004). In Brazil, with wider and more suitable areas for coffee cultivation, the cultivars were genetically improved for high productivity under full sunlight (DaMatta, 2004;Kanten and Vaast, 2006;Gomes et al, 2008). Although in Brazil coffee cultivation is done under full sunlight, the use of agroforestry systems can lead to socioeconomic advantages mainly for the small and median rural producers.…”

Section: Introductionmentioning

confidence: 99%

“…Although in Brazil coffee cultivation is done under full sunlight, the use of agroforestry systems can lead to socioeconomic advantages mainly for the small and median rural producers. Several factors may be cited as examples of these advantages: significant reductions on production costs; exploitation of other commercial products (fruits, crude latex, hardwood, and firewood, among others) within the same cultivation area; independence of external nutrient inputs, due to higher recycling of nutrients from decomposing of leaves and branches from trees; besides allowing that the coffee beans produced are of differentiated quality, thus widening new market and price options (DaMatta, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Physiological quality of coffee seeds produced under different levels of solar radiation and maturation stages

Baliza

Caixeta

Pinho

et al. 2012

Rev. bras. sementes

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-In Brazil, although the coffee plantations are predominantly grown under full sunlight, the use of agroforestry systems can lead to socioeconomic advantages, thus providing a favorable environment to the crop by promoting its sustainability as well as environmental preservation. However, there is a lack of information on physiological quality of the coffee seeds produced under different levels of solar radiation. Within this context, the objective of this study was to evaluate the influence of different levels of solar radiation and maturation stages on the physiological quality of coffee (Coffea arabica L.) seeds, cv. Acaiá Cerrado MG-1474. Three levels of solar radiation (plants grown under full sunlight; under plastic screens of 35% shading; and under plastic screens of 50% shading) and three maturation stages (cherry, greenish-yellow and green) were assessed. Physiological quality of seeds was assessed by using germination test, first count of germination, abnormal seedlings, dead seeds, and seedlings with open cotyledonary leaves. Electrophoretic analysis of isoenzymes catalase, esterase, superoxide dismutase and peroxidase was also performed. With the evolution of development the coffee seeds presents increases on physiological quality, and at its beginning the seeds show improvements on quality with the reduction of solar radiation.Index terms: Coffea arabica, germination, vigor, isoenzymes.Qualidade fisiológica de sementes de café produzidas sob diferentes níveis de radiação solar e estádios de maturação RESUMO -No Brasil, embora haja predomínio do cultivo do cafeeiro a pleno sol, o uso de sistemas agroflorestais pode induzir vantagens sócioeconômicas apresentando um ambiente favorável para a cultura, promovendo sustentabilidade e preservação do ambiente. No entanto, faltam informações sobre a qualidade fisiológica das sementes de café produzidas sob diferentes níveis de radiação solar. Neste contexto, o objetivo deste trabalho foi avaliar a influência de diferentes níveis de radiação solar e estádios de maturação, na qualidade fisiológica de sementes de café (Coffea arabica L.), cultivar Acaiá Cerrado MG-1474. Foram utilizados três níveis de radiação solar (plantas a pleno sol e sob sombrites de 35% e de 50% de sombra) e três estádios de maturação (cereja, verde-cana e verde). A qualidade fisiológica das sementes foi avaliada por meio do teste de germinação, primeira contagem, plântulas anormais, sementes mortas e plântulas com folhas cotiledonares abertas. Foi realizada ainda a análise eletroforética das isoenzimas catalase, esterase, superóxido dismutase e peroxidase. As sementes de café apresentam aumento da qualidade fisiológica com a evolução do seu desenvolvimento e, no início do seu desenvolvimento, apresentam melhoria da qualidade com a redução da radiação solar.Termos para indexação: Coffea arabica, germinação, vigor, isoenzima.

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Ecophysiological constraints on the production of shaded and unshaded coffee: a review

Cited by 378 publications

References 56 publications

Climate Change and Population Growth in Timor Leste: Implications for Food Security

Climate Change and Population Growth in Timor Leste: Implications for Food Security

Alterações morfofisiológicas em folhas de Coffea arabica L. cv. "Oeiras" sob influência do sombreamento por Acacia mangium Willd

Physiological quality of coffee seeds produced under different levels of solar radiation and maturation stages

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