NOCTI Plant Science Practice Test

The main reason for split-application of fertilizer is to:

To accelerate flowering To reduce leaching and better match plant uptake To increase sodium accumulation To lower soil pH

Correct Answer:

To reduce leaching and better match plant uptake

Explanation:

Splitting fertilizer applications focuses on timing and amount to keep nutrients available as the plant needs them, while reducing losses. When you apply smaller amounts at different times, nutrients are less likely to move beyond the root zone or be washed away by rain (leaching). This approach aligns nutrient availability with the plant’s growth stages, especially for nutrients like nitrogen that demand higher amounts during rapid vegetative growth. The result is more efficient use of fertilizer and a lower risk of root injury from a big single dose. It's not about accelerating flowering, increasing sodium, or lowering soil pH, which aren’t goals of splitting applications.

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