Why applying larger amounts of fertilizer may not generate greatwer profit?

Applying larger amounts of fertilizer may not generate greater profit because it can lead to diminishing returns, where the incremental yield gained does not offset the increased cost of the fertilizer. Excessive fertilizer can also harm soil health, lead to nutrient runoff, and cause environmental issues, potentially incurring additional costs. Moreover, over-fertilization can result in crop damage and reduced quality, further impacting profitability. Ultimately, a balanced approach that considers soil health and crop needs is often more economically viable.