What is the total nitrogen limit for a single application, excluding enhanced efficiency fertilizer?

The total nitrogen limit for a single application, excluding enhanced efficiency fertilizers, is established to minimize the risk of nitrogen runoff and potential contamination of local water sources, as well as to promote responsible nutrient management practices. The correct total nitrogen limit is 0.9 pounds per 1,000 square feet.

This specification is based on guidelines that aim to balance plant nutritional needs with environmental protection. By setting the limit at this level, Maryland encourages the use of appropriate nutrient management strategies that support plant health without contributing to excess nitrogen in the environment. This is particularly important in areas prone to nutrient runoff into waterways, which can lead to problems like algal blooms and degraded water quality.

In contrast, the other options do not align with the established limit, which has been derived from best management practices and scientific research in turf and landscape management. The selection of 0.9 pounds per 1,000 square feet ensures that the application is sufficient for turf health while still adhering to regulatory requirements aimed at minimizing environmental impact.