What is the maximum application rate for liquid manure per acre?

The maximum application rate of liquid manure per acre is set based on various factors including the type of crop, soil type, and nutrient management plans developed under Pennsylvania law. 9,000 gallons per acre is recognized as a safe upper limit for application in many contexts while ensuring that nutrient runoff into waterways is minimized, and it helps to maintain soil health. This figure is generally derived from guidelines that aim to optimize crop yield while preventing environmental degradation.

Application rates higher than this threshold could lead to nutrient overload, which can cause leaching and runoff, negatively impacting water quality and the surrounding ecosystem. Therefore, adhering to the guideline of 9,000 gallons per acre facilitates responsible nutrient management and aligns with state regulations designed to protect both agricultural productivity and water resources.

In contrast, the other rates listed significantly exceed recommendations for many farming practices in Pennsylvania, indicating potential risks associated with nutrient management failure if applied at those levels.