To maximize the effectiveness of fertilizer, what approach should be used?

Using soil testing results is the most effective approach to maximizing the effectiveness of fertilizer. Soil testing provides critical information about the current nutrient levels in the soil, as well as the pH and other essential characteristics. This allows a nursery technician to tailor fertilizer application to the specific needs of the plants and the soil.

When you know the nutrient deficiencies or excesses present in the soil, you can apply the right type and amount of fertilizer at the right time. This targeted approach helps promote healthy plant growth and minimizes the risk of nutrient runoff, which can harm the environment.

In contrast, applying fertilizer only once a season may not meet the ongoing nutrient needs of the plants throughout their growth stages. Using the same amount for every application does not take into account varying nutrient requirements across different seasons or plant types. Additionally, applying fertilizer during a severe drought can lead to greater nutrient loss, as the lack of moisture can prevent proper nutrient absorption by plants.