Evaluation of the use of a biocarbon on the absorption of cadmium from the soil and the productivity of the cocoa crop (Theobroma cacao L.) in the Ecuadorian Amazon. rias [Internet]. 2019 Jun. 28 [cited 2026 Mar. 14];2(1):6-15. Available from: https://rias.unesum.edu.ec/index.php/revista/article/view/33