In agricultural contexts, a CDR intervention — like the application of a weathering mineral or biochar — could potentially change fertilizer use. Applied minerals may contain trace amounts of phosphorus and potassium, which could potentially reduce fertilizer requirements, and alkaline silicates could potentially improve plant nitrogen uptake. Applied biochar could shift nutrient retention or availability, dependent on its chemical and pyhsical properties. Due to the potentially difficult nature of the counterfactual scenarios involved, quantifying these impacts may be challenging. If they are quantified, we recommend any associated avoided emissions be understood as a co-benefit and excluded from the calculation of net carbon removal.