The ammonia then becomes available for uptake by plants and other microorganisms for growth. Ecological Implications of Human Alterations to the Nitrogen Cycle Many human activities have a ...
The Nitrogen Cycle Let’s begin our discussion of the N cycle in a typical grain crop rotation (corn, wheat, double-crop beans) by considering the plant residue left on the field surface after harvest.
Nitrogen gas makes up 78% of Earth’s atmosphere and is an essential component in amino acids and proteins. However, plants and animals cannot use nitrogen gas directly. Nitrates and other ...
THE direct utilization by higher plants of nitrogen fixed by blue-green algae could play a substantial part in the Earth's nitrogen cycle. That certain species of blue-green algae can fix nitrogen ...
which pays out large amounts in fertilizer subsidies. It should also decrease N 2 O gas emissions and nitrate leaching from agricultural land, creating a healthier global nitrogen cycle.