Fabricio Camacho: The Cognitive Composter


Why do humans produce double the amount food that the entire world needs, but one billion people are still left hungry every day? How can we reduce the global impact of an agricultural industry that takes up 38 percent of Earth’s land mass?

On his childhood farm, a young Fabricio was wondering the same: why are they clearing the trees from the coffee plantations? Why do the coffee plants need chemicals? Why are the chemicals held in a room that I am not allowed in? These are questions Fabricio Camacho asked on his grandparent’s coffee farm in the 1980’s in the southern region of San Isidro, Costa Rica.

Now as the director of UGA Costa Rica, Fabricio is asking similar questions for his PhD research. This time, it’s through a more scientifically polished and globally pertinent lens.

He has a vision to fuse traditional methods of farming with the latest science. The goal is to produce coffee plants just as efficiently with a fraction of the emissions, cutting out synthetic fertilizers that deteriorate soil quality and emit greenhouse gases. Fabricio believes that we can sequester carbon and safeguard our water supply inside a rich soil that is facilitated by waste products that are already abundant.

Fabricio thinks that by using microorganisms and compost that is accessible to farmers, we can make a steep turn towards improving global health – and he’s got 1,600 plants outside the campus nursery to prove it.

Young Fabricio saw many of the fields on his home farm become degraded because of chemical use. This translated to special consideration for the long-term health of coffee plantations.

The first goal is substitution of synthetic fertilizers by purely organic matter. Because coffee production is the second largest crop in Costa Rica, the outcome could become a nationally adequate solution for carbon gas emissions.

“The idea could be adopted by just coffee farmers in Costa Rica, or the model could be introduced around the whole world” – Fabricio Camacho

He has eight different soil mixes randomly placed within each of the 64 blocks. The blocks are placed together to organize soil treatment throughout the experiment. Two of the eight are standard controls that farmers already use: basic soil and synthetically produced treatments. Two of these formulas are renditions of what Fabricio calls “optimized compost.”

The two optimized compost treatments have food waste products like banana leaves, wood chips, biodigestor sludge, and microorganisms that are available in the area, making his solution accessible to everyone.

Fabricio’s project delves into microbiology to understand how the MM (Mountain Microorganisms) and biodigestor sludge can facilitate nutrient absorption by the coffee plants and how much more carbon can be sequestered.

All of the plants are located in the same area to standardize lurking variables such as sun cover, rainfall, insect herbivory, and the microclimates of each block. His study will be able to be reproduced with 95 percent accuracy. This is lively science to be seen in an outdoor classroom where we can share the process with guests, students, and other researchers.

Fabricio takes every opportunity to share and crowd-source his ideas. The first planting day involved our UGACR maintenance team, most of whom have their own farms, to help weigh and mix the composts for the soil testing. A group of local farmers came to see and study the experiment due to their desire for new solutions.

Fabricio gladly shares the recipe, like teaching students from Fit4Earth how to bake a compost cake. These are young ticos who can apply the knowledge in their country, where 8% of the citizens work on coffee farms.

Fabricio’s hypothesis is that the optimized compost with purely organic material will facilitate coffee plant growth equally or better than the synthetic alternatives. The main objective is promoting sustainability by utilizing the natural resources that we have available. It can be more cost efficient because this method is easily obtainable within our environment.

CAB_2017_00026_Women's March

San Luis is a great example of a sustainable and organic model. If we prove this hypothesis correct, our community can serve as an inspiration to others. Through research and technological innovation we can bring the Costa Rican ecosystems back up to health by transitioning back to agro-forestry across the country.

The sustainable farms present in the community could use more strength for their plants. We could prove these soils to create more strength to grow, absorb nutrients, and contain water to hold throughout the dry season.

The common goal of Fabricio and participating interns is to bridge the gap between the practical farming community and the latest scientific breakthroughs. This experiment using unique ingredients is still one-of-a-kind on Earth. Fabricio is branching out by traveling to Germany for a month this summer to learn more about carbon sequestration.

It is already known that agro-forestry is more sustainable than monocultures. The questions Fabricio will resolve may prove that we don’t need any synthetic chemicals to maximize production. We can return to traditional methods with a newfound knowledge to gradually improve global health.

Blog post and photos by Photojournalism Intern Charles Austin Boll

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