A scientific breakthrough led by Costa Rican researchers has revolutionized the use of live microalgae. as a tool for more sustainable agriculture, placing the country's name on the international scene of nature-based solutions. The technology developed, which harnesses the bioactive properties of these microorganisms, allows for the rehabilitation of degraded soils and increases crop productivity in a natural and sustainable manner.
The development of agricultural biostimulants based on live microalgae Not only does it offer an environmentally friendly alternative to conventional fertilizers, but it also responds to the growing need to adapt to the challenges of climate change and soil degradation in modern agriculture.
The birth of an innovative solution
In Costa Rica, the scientist Maritza Guerrero and his team have driven the development of Phyco-Plus, a natural biostimulant based on live microalgae. This product regenerates depleted soils and boosts the growth of crops such as lettuce, watermelon, melon, zucchini and sweet peppers., achieving an increase in performance of between 20% and 30% in the tests carried out.
The highlight of this trailer is that Phyco-Plus is produced in large-capacity tanks located in Barva de Heredia., and the process has been optimized to reduce by a 95% manufacturing costs compared to international standards. This fact facilitates access for small and medium-sized farmers to a technology that was previously almost exclusive to large companies.

How microalgae biostimulant works
The microalgae They are unicellular aquatic organisms capable of photosynthesis, generating oxygen and capturing carbon. In their development, they produce proteins, vitamins, lipids, pigments and minerals which are essential for plant growth. By incorporating these live microalgae into the soil, its biodiversity increases and key processes such as water retention, biological nitrogen fixation and improvement of soil structure are activated.
After cultivation and harvesting via centrifugation, the biostimulant is bottled and applied directly to agricultural fields. Its benefits include: better root development, larger leaves, more vigorous plants, and crops with better flavor and quality. In addition, reduce dependence on fertilizers and pesticides, promoting the sustainability and profitability of the farmer.
Tangible results in the field
Producers like Jacob RamÃrez They have verified the advantages of using live microalgae on their own land: faster plant growth, larger leaves, deeper roots, and a noticeable increase in the quality and quantity of their crops. According to RamÃrez, One of the greatest strengths of this system is the diversity of microorganisms in the soil, since the application of living matter favors both present and future crops, maintaining a more balanced agricultural ecosystem.
Microalgae also contribute as carbon cycle enhancers, allowing a flow of between 0,7 and 1,8 grams of carbon per square meter, and increasing the resilience of crops to drought, pests, and other threats related to climate change.