What is one of the outcomes of applying recent manure applications in relation to denitrification?

Applying recent manure applications can increase the potential for denitrification in the soil. Denitrification is a microbial process where nitrate (NO3-) is converted into nitrogen gas (N2) or nitrous oxide (N2O), both of which are gases that can escape into the atmosphere. This process typically occurs in anaerobic conditions, where there is a lack of oxygen, and it is facilitated by organic matter present in manure.

Manure is rich in organic materials and nutrients, which contribute to the food source for denitrifying bacteria. When manure is applied to the soil, it enhances the organic matter content, creating a more favorable environment for these bacteria to thrive. As these bacteria metabolize the organic materials, they utilize nitrate, a common form of nitrogen found in fertilizers and manure. This consumption of nitrate through denitrification can help reduce nitrogen runoff into waterways, thus improving water quality.

This understanding of the process highlights the beneficial role that manure can play in altering the nitrogen cycle in agricultural systems, making the increase in the potential for denitrification a crucial outcome of its application.