Q- What are the macro-nutrients and why they are called macro nutrients?
Answer- The nutrients or minerals that are essential for plant and tree or are required by plant and tree in large amount or quantity are called as macro-nutrients. These nutrients are called as macro nutrients because these nutrients are essential for plant and tree or are required by plant and tree in large amount or quantity. Some important macro nutrients are as follows:
1. Potassium
2. Nitrogen
3. Calcium
4. Phosphorus