Read the following excerpt from a journalistic article on agricultural innovation:
In Colombia's central coffee-growing region, decades of intensive monoculture cultivation and increasingly volatile precipitation patterns have accelerated topsoil erosion and depleted vital organic matter. To counteract this progressive degradation, regional agronomic cooperatives and environmental researchers have introduced an innovative soil restoration strategy: converting discarded coffee husks into biochar through low-emission pyrolysis. When integrated into the soil matrix, this porous, carbon-dense material significantly improves moisture retention during dry spells and stabilizes beneficial microbial communities without requiring synthetic chemical inputs. While local producers initially expressed concern that the thermal conversion equipment would impose prohibitive operational costs, field trials demonstrated a twenty-five percent increase in nutrient retention alongside verifiable long-term carbon sequestration. Agronomists emphasize that the fundamental value of this initiative extends beyond agricultural waste management, representing a sustainable, closed-loop soil remediation model that rebuilds ecological resilience across vulnerable farming landscapes.
Based on the excerpt, which of the following best expresses the main idea of the article?
- AThermal pyrolysis of coffee husks increases soil nutrient retention by twenty-five percent in regional field trials.
- Transforming coffee cultivation waste into biochar offers a closed-loop soil remediation system that restores degraded land and strengthens ecological resilience.Cevap
- CThe widespread implementation of biochar technology will entirely eliminate the need for chemical fertilizers throughout South American agriculture.
- DFarmers' initial economic hesitations prove that advanced thermal processing technologies are impractical for smallholder cooperatives.