Which feature applies to mineral fertilizers?

• A. They are derived from plant or animal material
• B. They are always the cheapest option
• C. They can be tailored to provide specific nutrients and are readily available
• D. They are never used in modern viticulture

Answer: (C)

Mineral fertilizers are inorganic inputs whose nutrient content is precisely defined and manufactured. They can be formulated to deliver specific nutrients—nitrogen, phosphorus, potassium, and micronutrients—in exact ratios and are readily available for immediate use. This makes it possible to tailor the vine’s nutrition to the crop’s needs and soil conditions, providing fast and predictable responses. A describes organic fertilizers rather than mineral ones. B isn’t correct because price varies with formulation and supply. D is false because mineral fertilizers are commonly used in modern viticulture.