Philippe Vaast
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View article: Contrasted agronomical and physiological responses of five Coffea arabica genotypes under soil water deficit in field conditions
Contrasted agronomical and physiological responses of five Coffea arabica genotypes under soil water deficit in field conditions Open
Introduction Breeding programs have developed high-yielding Coffea arabica F1-hybrids as an adaptation against adverse conditions associated with climate change. However, theresponse to drought of coffee F1 hybrids has seldom been assessed…
View article: Cocoa Under Heat and Drought Stress
Cocoa Under Heat and Drought Stress Open
Cocoa ( Theobroma cacao L.) is an important cash crop in many tropical countries, particularly in West Africa. Heat and drought are both known to affect the physiology of cocoa plants through reduced rates of photosynthesis and transpirati…
View article: Can Agroforestry Provide a Future for Cocoa? Implications for Policy and Practice
Can Agroforestry Provide a Future for Cocoa? Implications for Policy and Practice Open
Climate change is threatening cocoa production in Ghana, the world’s second largest cocoa exporter. Yet, as we have shown in this book, the impacts of climate change must be understood in the context of the multiple socioeconomic and bioph…
View article: Genotypic differences in water deficit effects on leaf and crown traits in mature field-grown cocoa
Genotypic differences in water deficit effects on leaf and crown traits in mature field-grown cocoa Open
Cocoa trees are highly sensitive to water stress but these negative effects may differ genetically and may be mitigated by potassium (K) application. We studied these effects on six-year-old adult trees, five genotypes produced by somatic-…
View article: Genetic‐environment interactions and climatic variables effect on bean physical characteristics and chemical composition of <i>Coffea arabica</i>
Genetic‐environment interactions and climatic variables effect on bean physical characteristics and chemical composition of <i>Coffea arabica</i> Open
BACKGROUND The effects of the environment and genotype in the coffee bean chemical composition were studied using nine trials covering an altitudinal gradient [600–1100 m above sea level (a.s.l.)] with three genotypes of Coffea arabica in …
View article: “« Coffee agroforestry business-driven clusters »: an innovative social and environmental organisational model for coffee farm renovation
“« Coffee agroforestry business-driven clusters »: an innovative social and environmental organisational model for coffee farm renovation Open
Background: Worldwide coffee production, especially Arabica coffee, is threatened by climatic change, plants diseases and vulnerability of smallholders. Meanwhile, consumers’ demand for socially and environmentally sustainable products is …
View article: Effect of genotype and climate on the agronomic performance of 3 genotypes of Coffea Arabica
Effect of genotype and climate on the agronomic performance of 3 genotypes of Coffea Arabica Open
Source Agritrop Cirad (https://agritrop.cirad.fr/608164/)
View article: <scp>ShadeTreeAdvice</scp> methodology: Guiding tree‐species selection using local knowledge
<span>ShadeTreeAdvice</span> methodology: Guiding tree‐species selection using local knowledge Open
Selection of shade tree species for agroforestry systems must take the complexity of these systems into account. Tree species selection should maximize the provision of ecosystem services while minimizing disservices. Selected species must…
View article: Shade effects on yield across different Coffea arabica cultivars — how much is too much? A meta-analysis
Shade effects on yield across different Coffea arabica cultivars — how much is too much? A meta-analysis Open
The coffee research community has maintained a long ongoing debate regarding the implications of shade trees in coffee production. Historically, there has been contrasting results and opinions on this matter, thus recommendations for the u…
View article: Local value-chains dedicated to sustainable production (coffee agroforestry business-driven clusters or CaFC): a new organizational model to foster social and environmental innovations through farm renovation
Local value-chains dedicated to sustainable production (coffee agroforestry business-driven clusters or CaFC): a new organizational model to foster social and environmental innovations through farm renovation Open
Background: Worldwide coffee production, especially Arabica coffee, is threatened by climatic change, plants diseases and vulnerability of smallholders. Meanwhile, consumers’ demand for socially and environmentally sustainable products is …
View article: Shaded-Coffee: A Nature-Based Strategy for Coffee Production Under Climate Change? A Review
Shaded-Coffee: A Nature-Based Strategy for Coffee Production Under Climate Change? A Review Open
Coffee is deemed to be a high-risk crop in light of upcoming climate changes. Agroforestry practices have been proposed as a nature-based strategy for coffee farmers to mitigate and adapt to future climates. However, with agroforestry syst…
View article: Disentangling effects of altitude and shade cover on coffee fruit dynamics and vegetative growth in smallholder coffee systems
Disentangling effects of altitude and shade cover on coffee fruit dynamics and vegetative growth in smallholder coffee systems Open
Increases in temperature and more erratic rainfall patterns due to climate change threaten the already fragile livelihood of smallholder coffee farmers. Shaded coffee in agroforestry systems appear to be a good alternative to protect coffe…
View article: Water-use efficiency of new Coffea arabica F1 hybrids undergoing different water availability in an agroforestry system
Water-use efficiency of new Coffea arabica F1 hybrids undergoing different water availability in an agroforestry system Open
RATIONALE - Previous studies have shown that new F1 hybrids of Coffea arabica produce higher yield than commercial varieties in both full-sun and agroforestry systems (AFS). However, the physiological and molecular mechanisms controlling t…
View article: Evaluation of genotype – environment interactions of new Coffea arabica F1 hybrids planted in North-West provinces of Vietnam
Evaluation of genotype – environment interactions of new Coffea arabica F1 hybrids planted in North-West provinces of Vietnam Open
RATIONALE - The H2020 BREEDCAFS (http://www.breedcafs.eu) project aims to test new F1 hybrids of Coffea arabica (high yielding, stress resistant and adapted to agroforestry) in coffee producing countries, such as Vietnam. In 2018, these hy…
View article: Coffee Microbiota and Its Potential Use in Sustainable Crop Management. A Review
Coffee Microbiota and Its Potential Use in Sustainable Crop Management. A Review Open
Intensive coffee production is accompanied by several environmental issues, including soil degradation, biodiversity loss, and pollution due to the wide use of agrochemical inputs and wastes generated by processing. In addition, climate ch…
View article: Local Knowledge about Ecosystem Services Provided by Trees in Coffee Agroforestry Practices in Northwest Vietnam
Local Knowledge about Ecosystem Services Provided by Trees in Coffee Agroforestry Practices in Northwest Vietnam Open
In recent decades in northwest Vietnam, Arabica coffee has been grown on sloping land in intensive, full sun monocultures that are not sustainable in the long term and have negative environmental impacts. There is an urgent need to reverse…
View article: Coffee, Farmers, and Trees—Shifting Rights Accelerates Changing Landscapes
Coffee, Farmers, and Trees—Shifting Rights Accelerates Changing Landscapes Open
Deforestation and biodiversity loss in agroecosystems are generally the result of rational choices, not of a lack of awareness or knowledge. Despite both scientific evidence and traditional knowledge that supports the value of diverse prod…
View article: Effect of cropping system, shade cover and altitudinal gradient on coffee yield components at Mt. Elgon, Uganda
Effect of cropping system, shade cover and altitudinal gradient on coffee yield components at Mt. Elgon, Uganda Open
Coffee is a key export commodity of East Africa, but average smallholders’ yields are low. To guide sustainable yield improvements of smallholders’ coffee systems, we investigated coffee yield components in three different types of coffee …