Growing coffee in the shade: Towards agricultural sustainability in Colombia. (2024)

Interview with Rudolf Agricola PhD Grant winner William Andrés Cardona

24 June 2024

William Andrés Cardona is the winner of a Rudolf Agricola PhD Grant. With this grant, he can evaluate different sustainable indicators in forty coffee farms in the Meta department in central Colombia for his research:

'In Colombia, coffee plantations are often established in mountainous areas at an altitude of about 1200 meters. The Meta department is an exception to this; it is lower and much flatter. Farmers there now cultivate monocultures of coffee plants, but we believe it can be much better with agroforestry. There is a lot of space between the coffee plants where other crops and trees can be planted, which benefits sustainability.'

Growing coffee in the shade: Towards agricultural sustainability in Colombia. (1)

There is an awful lot of coffee in Brazil!' goes the famous song. Colombia however, is often associated with an infamous product: cocaine. The Colombian government now is trying to change that. Coffee can grow well in many parts of Colombia also, and it offers a good alternative for Colombian farmers. But how do you grow coffee as sustainably as possible? This is being researched by William Andrés Cardona, a PhD student at the University of Groningen, under the guidance of Professor Pablo Tittonell. Cardona: 'Colombia has an agricultural institute that has been researching coffee cultivation for a hundred years. Yet they do not conduct scientific research in Meta because the area is still considered too dangerous and not significant.'

Trees to reduce heat

Cardona's research began in September 2022, and in August 2023, farmers planted coffee plants according to principles developed together with Cardona and Tittonell. Latin America was once known for its 'three sisters agriculture.' Indigenous farmers planted corn, beans, and squash together. Europeans, used to monocultures, found that messy, but this mix worked well for the soil, against pests, and yielded a good harvest without pesticides and fertilizers. Cardona's new system seems to be a modern variation of this.

Cardona: 'Despite the presence of illegal groups in the region, coffee production offers a good opportunity for legal economic development. However, the agro-ecological conditions in the south of Meta require a different approach to coffee cultivation than in other Colombian regions. Farmers have now, in consultation with us, planted other crops and trees between the coffee plants. Trees can help reduce extreme heat with their shade and increase the yield of food crops. This creates systems that make the depleted soil fertile again by adding organic matter. Meta is known for producing plantains and cassava, which have a growing demand. Avocado cultivation also offers potential for the local market, creating opportunities to sell the additional crops.'

Growing coffee in the shade: Towards agricultural sustainability in Colombia. (2)

What's the best mix?

While monoculture plantations can increase production in the short term, they are harmful to the environment. The soil quickly loses its fertility, and biodiversity decreases. Moreover, these plantations are vulnerable to climate change. Cardona hopes that his method of crop diversification will increase biodiversity and agricultural productivity and be good for the soil. By growing different plants together, they are more resistant to diseases and there is less need for fertilizers and pesticides. However, the question remains: what is the best mix of plants?

Cardona: 'We have established plantations with different ground covers and crops, including avocado, plantain, corn, beans, pigeon peas, and cassava. We measure the effects on ecosystem services such as carbon sequestration, soil quality, and food security. We conducted measurements before introducing the new plants and are now monitoring how the soil and plants develop.

Coffee plants only yield after two years, so farmers would not have earned anything until now. By growing other crops between the coffee plants, they earn from the beginning. We are also investigating what the farmers do with those products: do they sell the yield, eat it themselves, or use it to feed animals?

With climate change in mind, we are also looking for alternative crops for areas becoming less suitable for coffee. Ultimately, we expect to gain a lot of knowledge that will make coffee cultivation more sustainable and environmentally friendly, and also ensure farmers a good yield.'

Growing coffee in the shade: Towards agricultural sustainability in Colombia. (3)

How this Rudolf Agricola School Grant is being used

The grant will be used to study how sustainable an agroforestry system (SAFS) is for growing coffee in Mesetas and Uribe (Meta), Colombia.

The grant money will fund soil sampling on 40 coffee farms (17 in Mesetas and 23 in Uribe) to understand the ecosystem services related to coffee crops.

Various factors will be measured to assess the sustainability of the farms, such as weather conditions, plant growth (e.g., height and size), coffee production (e.g., yield and quality), and greenhouse gas emissions.

Overall, the grant will support activities that evaluate the sustainability and ecological performance of coffee agroforestry systems, generate valuable data on sustainable farming practices, improve coffee productivity, and help farmers cope with climate change.

Last modified:25 June 2024 1.13 p.m.

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Growing coffee in the shade: Towards agricultural sustainability in Colombia. (2024)

FAQs

What are the environmental benefits of shade-grown coffee? ›

The presence of trees in shade-grown coffee farms, then, can help keep carbon out of the atmosphere, as well as act as a possible buffer to future temperature increases brought on by climatic change.

Is Colombian coffee shade-grown? ›

Shade coffee in Colombia

Various sources [1,2,3] indicate that the proportion of coffee grown under traditional shade ranges from 16 to 40%.

How can coffee farming be more sustainable? ›

Agroforestry – Planting trees

Agroforestry models – where coffee is grown under the canopy of other trees – are uniquely valuable to coffee cultivation. Trees help absorb carbon dioxide, enrich the soil, reduce erosion, regulate water use and increase biodiversity.

Why buy shade-grown coffee? ›

Shade-grown coffee works within the natural ecosystem, contributing to and receiving help from the system. Shade trees provide many nutrients to the coffee plants and the surrounding soil, natural predators help control coffee pests, and the shade trees help protect the coffee crops from frost.

What is one disadvantage of shade-grown coffee farming? ›

The one disadvantage of shade-grown coffee farming is that it generates lower profits due to the reduced yield of coffee beans.

What is one type of sustainable coffee is grown in the shade? ›

Shade-grown coffee is Arabica coffee cultivated at high altitudes under the canopy of bigger plants and trees in the rainforest. The coffee bush is a shade-loving plant that flourishes in this micro-ecosystem and produces more even higher quality coffee beans.

Why is Colombia perfect for coffee growing? ›

Colombia is home to dozens of micro-climates, making it a land that is particularly well-suited for coffee growing. The thousands of nutrient-thick hills and mountains, wet climate, and the high elevation make it easy to grow great authentic Colombian Coffee.

Why is shade-grown coffee more expensive? ›

Raise coffee quality, which can lead to higher prices for farmers, as shaded coffee trees generally produce slow-maturing, larger beans with a better flavor profile. Provide farmers with access to specialty markets that reward shade-grown coffee with premium prices.

What are some of the major environmental problems with coffee production? ›

Coffee production is altering rainforest ecosystems which negatively affect plant and animal species living within. Worldwide, the use of monocrop coffee production is leading to deforestation, soil erosion, and water pollution.

What are the sustainability issues in coffee? ›

One of the main sustainability challenges facing the coffee industry is deforestation. Coffee production is a major driver of deforestation in many countries, as farmers clear land to make way for new coffee plants.

Why is coffee farming unsustainable? ›

Coffee production in its current state is unsustainable. Just like most agricultural practices, mainstream, commercial coffee production takes a huge toll on the environment because it uses a monocultural method of maximizing crop yields while relying heavily on chemical inputs like fertilizers and pesticides.

What is the most sustainable way to make coffee? ›

Most Sustainable Coffee Brewing Method

From coffee pods and filters to expensive bean to cup machines, it turns out that the most sustainable way to make your coffee is using a French press. The French press, also known as a cafetière, requires no filters, no electricity, no fancy pods.

Is Starbucks shade-grown coffee? ›

Starbucks started selling its first Mexican coffee in the 1990s, then known as Starbucks Shade Grown Mexico, from the Sierra Madre de Chiapas Mountain range; this variety is now called Chiapas.

Is shade-grown coffee more sustainable? ›

Higher quality coffee beans, more often than not, taste better than lower quality beans. It is clear that shade grown coffee is superior to sun grown coffee for multiple reasons, especially for its sustainability, ecological, and flavor benefits.

Which of these outcomes is an advantage of shade-grown coffee? ›

Better coffee quality: Shade-grown coffee plants grow more slowly, resulting in denser beans with better flavors. Shade-grown coffee farming is an eco-friendly and sustainable way of coffee production that not only benefits the environment but also produces better quality coffee beans.

What are the environmental benefits of coffee growing? ›

Coffee growing helps reduce soil erosion, is a useful carbon sink (especially with plantations grown under shade trees), aids good watershed management, helps to maintain a degree of biodiversity, particularly in systems with mixed cropping on small family farms, and can provide a good habitat for many migrant birds ...

What are some of the environmental issues involved in shade versus sun grown coffee? ›

Shade grown coffee conserved the soil and original forests. But the huge increase in demand for coffee has transformed more and more production from shade to sun grown coffee. Sun grown coffee requires clearing of forests and because the topsoil is eroded also the use of chemical fertilizers.

Why is shade-grown coffee better for the environment quizlet? ›

On a shade-grown coffee plantation, smaller coffee plants grow in the shade of forest trees. The practice produces fewer coffee beans than growing coffee in the sun, but it is more sustainable because it provides habitat for forest birds.

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