Which of the following is NOT true about fertilizer?

Fertilizer plays a crucial role in supplying essential nutrients to plants, thus supporting their growth and development. While it is true that plants require certain nutrients to thrive, stating that fertilization is always necessary for plant growth is not entirely accurate. Many plants can grow in soil that contains adequate amounts of natural nutrients without the application of additional fertilizers.

Fertilizer is specifically beneficial in replenishing nutrients that may be depleted from the soil through previous crop harvests or erosion, making it an important tool for agricultural practices. Additionally, fertilizer can be efficiently delivered through irrigation systems, and it is important to apply it under suitable conditions to avoid negative impacts on both plant health and the environment.

Therefore, the understanding of fertilizer's necessity for plant growth needs consideration of the availability of nutrients in the soil and the specific crop’s requirements.