commercial fertilizer

noun

fertilizer manufactured chemically, as distinguished from natural fertilizer, as manure.

An Americanism dating back to 1885–90

If the ground is not very rich, a sprinkling of ashes or some commercial fertilizer may be given from time to time.

To the second box was added sufficient commercial fertilizer to supply the plants with all necessary plant food.

For special farming and special crops it may be necessary to use the commercial fertilizer more freely.

If commercial fertilizer is used on the cotton, it would be a good plan to apply the manure from the stock to the corn.

The soil should be enriched with a liberal application of commercial fertilizer, or thoroughly decomposed stable manure.

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