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What should not be included in floral preservatives for cut flowers?

  1. Sugar

  2. Water

  3. Nitrogen fertilizer

  4. Acidifier

The correct answer is: Nitrogen fertilizer

The correct answer is nitrogen fertilizer, as it is not beneficial for cut flowers in floral preservatives. Floral preservatives are designed to provide cut flowers with essential nutrients while also extending their vase life. They typically contain ingredients that help maintain hydration and provide sugars as a source of energy for the flowers. While water is essential for hydration, sugars help support the metabolic processes of the flowers, and acidifiers adjust the pH of the water to enhance water uptake. Nitrogen, on the other hand, is primarily used as a nutrient for growing plants, not for cut flowers. Adding nitrogen fertilizer to a floral preservative could lead to excessive growth or the development of bacteria, which can decrease the longevity of the flowers rather than increasing it. Therefore, including nitrogen fertilizer in floral preservatives is counterproductive and should be avoided.