Can Biofortified Crops Reduce Soil Fertility?
A soil is said to be deficient in a given nutrient when the addition of fertilizer produces better growth—even though the amount of nutrient in the fertilizer added may be small compared with the total amount of the nutrient in the soil. This seeming paradox can occur when only a small part of the nutrient in the soil is available to plants, owing, for example, to the chemical properties of the soil.