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Abstract
Objective: to propose a new electrostatic theory for sap ascent in tall trees. Design/Methodology/Approach: we accomplished a detailed review of the different theories published regarding sap ascent by capillary in trees. The new theory proposed herein is based on some scientific studies of physiologists, biophysicists, and other branches of science, which expose the scientific bases of the water movement in the plant, but who have not proposed an integrated framework. Results: the proposed theory analyzed prior knowledge, then based on it, a new explanation is proposed for the ascent of sap in trees. Study Limitations/Implications: no field experiments were carried out to verify the increase in sap ascent in trees with heights greater than 40 m. Findings/Conclusions: this new theory helps to better explain water loss through transpiration and metabolic processes, since both are closely related to the water content in the mobile solution in conducting vessels.