Clearly, all external inputs of organic matter are desirable. The problem is with the overall appraisal. If we only do monocultures that take away the organic matter, inevitably, year after year, it decreases steadily. The latest Black report still indicated actual losses of organic matter in the soils, which harms their long-term productivity.
Let's talk about solutions. One would be to increase the proportion of rotations that return organic matter to the soil, such as green manures or forage rotations. We've lost nearly 40% over the past few years. This loss particularly harms the chances we have of maintaining soil health for future generations.