1) How do I get plants (Nitrogen fixing plants) to increase nitrogen uptake from the air? 2) Is there a way to get non nitrogen fixing plants to take up nitrogen from the air?
Nitrogen Fixing Plants
Certified GKH Gardening Expert
1) You can inoculate the soil with a special kind of bacteria that will increase the nitrogen uptake of nitrogen fixing plants. Here is more information: https://www.gardeningknowhow.com/edible/vegetables/beans/soil-inoculants.htm