Q3. Justus von Liebig is often given credit as the inventor of chemical fertiliz

Question

Q3. 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?

A. Nutrients used at the greatest rate by crops should be maximized in the fertilizers applied to them.

B. Nutrients used at the lowest rate by crops should be maximized in the fertilizers applied to them.

C. Whichever nutrients are limiting should be included at the highest proportions in the fertilizers applied to the crops

D.All limiting and secondarily limiting nutrients should be included in equal proportions in the fertilizers applied to the crops.

Explanation / Answer

C, the nutrients that are least available to plant from soil shall be included at the highest proportions in the fertilizers. plants depend on several factors for growth, for eg. sunlight, water, minerals. Most of the times lack of certain minerals in the soil limit the growth and productivity of plants even in abundance of all other factors. the factor that limits the growth shall be supplied in abundance in the fertilizers.

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