Food crop

Definition and stakes

Little Masterpieces of Science…

“ When we see how important as signs of water many plants can be, why may we not find other plants denoting the minerals which they especially relish as food or condiment?
Of more account than gold or silver are the harvests of wheat and corn that ripen in our fields. There the special appetites of plants have much more than merely curious interest for the farmer. He knows full well that his land is but a larder which serves him best when not part but all its stores are in demand. Hence his crop “rotation,” his succession of wheat to clover, of grass to both.
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Source: Gutenberg

Various,  Popular Science Monthly (1889)

“ But if the land is planted one or more years with a vegetable which takes a different kind of nourishment from the soil, time is allowed for the chemical changes constantly going on in the ground to produce a supply of the food required by the first kind of crop. In the cultivation of the beet-root for sugar-producing, it must follow the cereals, such as wheat, rye, and barley, but, to be profitable, not oftener than every third year. ”
Source: Wikisource

Alva Agee,  Crops and Methods for Soil Improvement

“ Fertilizers.—When a crop is fed to livestock, and all the manure is returned to the land that produced the crop without loss by leaching or fermentation, there is a return to the land of four fifths of the fertility, and a good form of organic matter is supplied. A portion of the crops cannot be fed upon the farm, or otherwise the human race would have only animal products for food. The welfare of the people demands that a vast amount of the soil's crops be sold from the farms producing them. ”
Source: Gutenberg

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