Nitrogen is essential for healthy soil. Do you know how to add nitrogen to soil? Nitrogen is a key nutrient for plants, and it helps to promote growth. There will be some in the soil naturally, but ...

Learn what causes yellow tomato plant leaves and how to restore healthy green growth.

Organic nitrogen is important for plant growth, but too much of it can cause a range of problems. Over-fertilization, improper composting, or runoff from nearby agricultural areas can all contribute ...

Scientists are uncovering the genetic switches that let legumes team up with bacteria to pull nitrogen from the air. By tweaking just two amino acids in a key receptor, they’ve made non-legume plants ...