The value of this enormous agricultural production, if stated in dollars and cents, would be misleading because prices change from year to year; the fluctuations are often considerable within a very short period of time.[[157]] But in any case the contribution which agriculture makes to the yearly income of the nation is enormous. Upon it the national prosperity depends in a very great measure.
How the war stimulated American food production.
American Agriculture and the War.—American agriculture had a very important part in winning the World War. As this great struggle progressed the task of providing food for the Allied armies and for the civilian populations became month by month more difficult. Men were drawn off the farms of Europe to fight and the fields went uncultivated; practically the whole of Belgium and a considerable part of France were in the hands of the enemy; no supplies could be drawn from remote parts of the world such as Australia, South America, or the Far East because the available ships were needed to carry troops and munitions; so the American farmer had to speed up production in order to save the situation. When America entered the war the Allies had practically reached the end of their resources in foodstuffs; their populations were living under a rigid system of food rationing. Under the stimulation of this great emergency American agriculture rose to the occasion and the increased production of foodstuffs, together with the savings which were made through the observance of “wheatless” and “meatless” days enabled the United States not only to maintain an army of two million soldiers in France but to contribute largely to the food supplies of the Allied armies and civilian populations as well. The supply trains which fed the American army in France (and never on a single day did they fail to reach the front), started from Kansas City and Chicago, not from Brest or Havre. The American farmer was the great factor in this service of supply.
An example of increasing returns.
A Peculiarity of Agricultural Production—The Law of Diminishing Returns.—There is one fundamental feature in which agriculture differs from industry. In industry, as a rule, the more labor and capital you apply the greater the amount of the produce. Many industries, indeed, are so constituted that by applying additional capital and labor you obtain more than proportionate returns. Take the book-binding industry, for example. A small shop, employing three men, might bind and stamp two hundred books per day at a cost of twenty cents per book. But a large establishment, employing a hundred workers with modern machinery can easily put through many thousand books at half the cost per volume. A manufacturer, if he is wise, finds out what branches of his business are most profitable. Then he applies more capital and labor in that direction so as to increase his earnings, and devotes less attention to the things which cannot be made so profitably. This is known as production under the law of increasing returns.
But in agriculture the situation is quite different. Any farmer or ranchman will tell you, if you ask him, that some of his land is better than the rest and yields him greater profit for the capital and labor applied to it. But if you thereupon suggest to him that he should devote all his attention to this particular piece of land, and neglect the rest, he would think very poorly of your intelligence. |An illustration of decreasing returns.| And rightly so, for if he applied more labor and capital to his best land, he would not be sure of getting a crop-increase in proportion; on the contrary, he would be quite safe in saying that, after a certain point, his extra labor and capital would bring him less than proportionate returns. An investment of ten dollars per acre may result in a crop of fifteen bushels per acre. It is very doubtful whether by applying twenty dollars worth of capital and labor to the land this yield could be doubled and it is quite certain that it could not be trebled by spending thirty dollars per acre on the land. In other words, agriculture is carried on, for the most part, under the law of diminishing returns, which may be briefly defined by saying that, “if at any given time, the amount of labor and capital applied to agricultural land is increased beyond a certain point, the increased investment will yield less than proportionate returns”. If this were not the case, no one would ever cultivate the poorer lands. We would raise our entire crops from the most fertile tracts. The point at which the returns will begin to diminish can never be exactly fixed, for improvements in the methods of agriculture may place it further ahead. These improved methods also bring into cultivation lands which otherwise would not be utilized.
Another Peculiarity of Agriculture—Limitations on Division of Labor.—In one other fundamental feature there is a difference between agriculture and industry. In industry, as will be seen presently, the individual worker confines his attention to one operation in the process of production. He does not make a shoe, but only part of a shoe. But in agriculture, this division of labor cannot be carried so far. |Why division of labor does not apply to agriculture.| The workers engaged in agriculture cannot be ploughmen, sowers, reapers, or threshers only; they must take a hand at all these things when the time comes. This is because the tasks connected with agriculture change with the seasons. Agricultural labor must, therefore, be much more versatile than labor employed in large-scale industry. Most industries, moreover, are able to run along at an even pace throughout the year, affording steady employment to a fixed number of workers. But in most forms of agriculture, the amount of labor required is much greater at some seasons of the year than at others, thus giving the farmer a labor problem of great difficulty to contend with.
The chemical elements in soil.
The Exhaustion of the Soil.—The agricultural production of the country depends upon the fertility of the soil. Agricultural soil contains various chemical properties which are exhausted by long-continued cropping, particularly if only one type of produce is grown. These chemical elements are, more particularly, nitrogen, phosphorus, and potash. Some crops draw chiefly upon one of these chemical elements and some upon the others. Wheat and corn take large amounts of nitrogen from the soil, while potatoes draw a larger proportion of potash. The exhaustion of the soil is prevented in two ways, first by rotation of crops and, second, by the use of fertilizers. Rotation of crops involves the growing of different products in successive years, such as wheat, potatoes, and hay. It is not always practicable. |Fertilization.| Fertilization involves the putting of chemical elements back into the soil. It may be effected by the use of natural manure or artificial fertilizers or by ploughing under the soil a green cover crop. Land retains its fertility to the degree that chemical elements are conserved in it.
The Effects of Agricultural Improvements.—During the past half century great progress has been made in all the processes of agriculture. The methods of treating the soil, the types of grain and other produce grown, the machinery available for use in agriculture, and the general intelligence with which the lands are cultivated—all have vastly improved since our grandfathers’ day. |The increased yield of the soil.| The results are apparent in an increased production. At the time of the Civil War the yield of wheat throughout the United States averaged only nine to ten bushels per acre; today it is nearly double that figure. Good farms and good farmers are now producing twenty-five bushels of wheat to the acre, sixty bushels of corn, or six hundred pounds of cotton. Similar progress has been made in the raising of cattle and in dairying. This has been accomplished by the selection and breeding of improved stock.