What potential loss can occur during the storage and handling of manure?

The potential loss that can occur during the storage and handling of manure primarily involves the leaching of nutrients. When manure is stored, particularly in areas with high rainfall or poor drainage, water can percolate through the material, carrying away soluble nutrients such as nitrogen, phosphorus, and potassium. This leaching can diminish the nutrient content of the manure, reducing its effectiveness as a fertilizer when applied to crops.

Understanding this process is vital for nutrient management, as it highlights the importance of proper storage techniques. Implementing strategies such as using covered storage or adhering to recommended storage times can help minimize nutrient loss through leaching, ensuring that the manure provides maximum benefit when utilized in agricultural practices.

The other options do not accurately describe the primary risks associated with manure storage. For example, while the improvement of microbial activity could potentially happen in some contexts, it does not represent a "loss" but rather a beneficial aspect of manure decomposition. Similarly, an increase in potassium or soil acidity are unlikely to occur directly due to storage and handling practices, as these are not typical outcomes associated with nutrient loss in this context.