Q1.3. Justus von Liebig is often given credit as the inventor of chemical fertil

Question

Q1.3. Justus von Liebig is often given credit as the inventor of chemical fertilizers. Most include the same key nutrients, but the proportions vary widely. For example, a '5-10-5' fertilizer will include 5% nitrogen, 10% phosphorus, and 5% potassium. Why is Liebig's "Law of the Minimum" relevant for farmers choosing which fertilizers to apply in order to increase crop yields? Nutrients used at the greatest rate by crops should be maximized in the fertilizers applied to them. Nutrients used at the lowest rate by crops should be maximized in the fertilizers applied to them. O Whichever nutrients are limiting should be included at the highest proportions in the fertilizers applied to the crops All limiting and secondarily limiting nutrients should be included in equal proportions in the fertilizers applied to the crops

Explanation / Answer

The answer will be whichever nutrients are limiting should be included at the highest proportions in the fertilizers applied to the crops (Option 3).

Explanation: According to the “Law of the Minimum” limiting nutrient(s), the one(s) which is minimally available will limit the growth of plant. Thus if it increased will increase the growth of the plant.

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