Agroforestry systems may show low CO2 efflux. and CO2 efflux contributes to sustainability. This work aimed to evaluate the soil CO2 efflux in coffee plantations cultivated in agroforestry and full-sun systems during the winter in high-altitude tropical climate regions. The work was carried out at three family farms (RO. https://parisnaturalfoodes.shop/product-category/chest-rub-stopitcold/