Question

How does the use of fertilizer affect the nitrogen cycle? make it short

Answer 1

The use of fertilizer significantly impacts the nitrogen cycle by introducing excess nitrogen into the soil. Fertilizers, particularly those containing nitrate and ammonium, can enhance plant growth but can also lead to nutrient runoff into water bodies, causing problems like algal blooms. Additionally, excessive fertilizer use can disrupt natural microbial processes, such as nitrification and denitrification, leading to changes in soil health and potentially increasing greenhouse gas emissions, specifically nitrous oxide. Over time, this can degrade soil quality and harm aquatic ecosystems.