Effect of biofertilizers based on mountain microorganisms on mycorrhizal colonization and yield of lettuce and carrot crops, in Argentinean Patagonia
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Abstract
A main objective of agroecology is the development of productive practices that reduce the use of external inputs and are environmentally friendly. This is achieved through co-innovation. In particular, reducing the use of imported and/or chemically synthesized fertilizers represents a significant concern among vegetable producers in the Andean Region along the 42nd parallel in Argentine Patagonia. This study evaluated the impact of biofertilizers derived from mountain microorganisms collected from native forests on mycorrhizal colonization and from yields from lettuce and carrot crops. The study specifically examined the use of artisanal "bioestimulantes" and "supermagro" compared to established farmers' fertilization practices. Trials were conducted in three fields, one under conventional management and two under agroecological practices. Results demonstrated that agroecological fields exhibited elevated levels of mycorrhizal colonization compared to conventional management. The application of supermagro increased mycorrhizal colonization in agroecological lettuce fields, while the effects of different treatments on carrots were less pronounced. The application of supermagro resulted in a slight reduction in lettuce yield compared to the established farmer's fertilization or Bioestimulante. Conversely, the bioestimulante treatment demonstrated a favorable impact on carrot yield, particularly in the context of agroecological fields. The utilization of locally sourced biofertilizers represents a promising avenue for maintaining or enhancing the productivity of intensive vegetable crops. These bioinputs enhance soil functionality and reduce reliance on external inputs, contributing to a transition towards more sustainable and resilient practices.
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