Final answer:
The two major components of non-uniformity in above-ground drip irrigation systems are the amount of water and the amount of plant food.
Step-by-step explanation:
The two major components of non-uniformity in above-ground drip irrigation systems are:
- The amount of water
- The amount of plant food
In above-ground drip irrigation systems, the water and plant food are delivered through emitters placed above the ground. The spacing and distribution of these emitters can cause variations in the amount of water and plant food reaching different areas of the field, resulting in non-uniformity.