Which of the following is not part of the purpose of a nutrient management plan?

A nutrient management plan primarily focuses on optimizing the use of nutrients in agricultural systems to enhance productivity and minimize environmental impacts. The objective of such a plan includes minimizing nutrient losses, which helps to protect water quality and prevent nutrient runoff into nearby water bodies. This is critical for sustainable farming practices and compliance with environmental regulations.

Maximizing crop yields is also a fundamental goal since the efficient application of nutrients directly influences the health and productivity of crops. By taking into account the specific nutrient needs of crops, a nutrient management plan ensures that plants receive the right amount of nutrients at the right time, which can lead to higher yields.

Controlling water use is relevant as well, particularly since nutrient uptake by plants is often closely tied to water availability. Efficient nutrient management can help optimize water use efficiency, ensuring that crops get sufficient moisture while avoiding wastage.

Improving atmospheric conditions does not directly relate to the goals of a nutrient management plan. While good nutrient management practices can contribute to lower greenhouse gas emissions indirectly, the primary focus remains on managing soil nutrients and their impact on crops and the environment, rather than on atmospheric conditions themselves. This is why the option regarding atmospheric improvements does not fit as part of the core purpose of a nutrient management plan.