Which statement about fertilizer application is true?

• A. Fertilizer Injection is an Efficient and Approximate Method
• B. It Is the Least Efficient Method
• C. It Is Used Only in Organic Farming
• D. It Is Illegal in Many Countries

Answer: (A)

Fertilizer injection, or fertigation, delivers nutrients directly through the irrigation system so the roots receive them with the water they’re already drinking. This setup is efficient because you can control the exact timing and amount of fertilizer, targeting the root zone and matching nutrient supply to the crop’s water needs. That precise delivery reduces losses from runoff, leaching, and volatilization, and it often leads to more uniform nutrient availability across the field.

In practice, the system’s efficiency can be described as high, even though the actual delivered dose might be viewed as approximate in some situations. Variations in irrigation flow, distribution uniformity, and soil moisture can cause slight deviations from the intended rate, but with good management and calibration, fertigation remains a highly effective method.

It's not the least efficient option, it isn’t confined to organic farming, and it isn’t illegal in most countries, so those statements don’t fit as well.