Wheat
 Fig. 192. A
Hand
Wheat has been cultivated from earliest times. It was a chief crop in Egypt and
Palestine, and still holds its importance in the temperate portions of Europe, Asia, Africa, Australia, and
America.

Fig. 193. Wheat Heads
This crop ranks third in value in the United States. It grows in
cool, in temperate, and in warm climates, and in many kinds of soil. It does best in clay loam, and worst in
sandy soils. Clogged and water-soaked land will not grow wheat with profit to the farmer; for this reason,
where good wheat-production is desired the soil must be well drained and in good physical
condition—that is, the soil must be open, crumbly, and mellow.
Clay soils that are hard and lifeless can be made valuable for wheat-production by
covering the surface with manure, by good tillage, and by a thorough system of crop-rotation. Cowpeas and
other legumes make a most valuable crop to precede wheat, for in growing they add atmospheric nitrogen to the
soil, and their roots loosen the root-bed, thereby admitting a free circulation of air and adding humus to
the soil. Moreover, the legumes leave the soil with its grains fairly close packed, and this is a help in
wheat growing.

Fig. 194. Roots of a
Single Wheat Plant

Fig. 195. Selecting Wheat Seed
One may secure a good seed-bed after cotton and corn as well as after cowpeas and
other legumes. They are summer-cultivated crops, and the clean culture that has been given them renders the
surface soil mellow and the undersoil firm and compact. They are not so good, however, as cowpeas, since they
add no atmospheric nitrogen to the soil, as all leguminous crops do.
From one to two inches is the most satisfactory depth for planting wheat. The largest
number of seeds comes up when planted at this depth. A mellow soil is very helpful to good coming up and provides a most comfortable home for the roots of the plant. A compact
soil below makes a moist undersoil; and this is desirable, for the soil water is needed to dissolve plant
food and to carry it up through the plant, where it is used in building tissue.
There are a great many varieties of wheat: some are bearded, others are smooth; some
are winter and others are spring varieties. The smooth-headed varieties are most agreeable to handle during
harvest and at threshing-time. Some of the bearded varieties, however, do so well in some soils and climates
that it is desirable to continue growing them, though they are less agreeable to handle. No matter what
variety you are accustomed to raise, it may be improved by careful seed-selection.
The seed-drill is the best implement for planting wheat. It distributes the grains
evenly over the whole field and leaves the mellow soil in a condition to catch what snow may fall and secure
what protection it affords.

Fig. 196. Adjoining Wheat Fields
The yield of the lower field, forty-five bushels per
acre, is due to intelligent farming
In many parts of the country, because not enough live stock is raised, there is often
too little manure to apply to the wheat land. Where this is the case commercial fertilizers must be
used. Since soils differ greatly, it is impossible to suggest a fertilizer adapted to
all soils. The elements usually lacking in wheat soils are nitrogen, phosphoric acid, and potash. The land
may be lacking in one of these plant foods or in all; in either case a maximum crop cannot possibly be
raised. The section on manuring the soil will be helpful to the wheat-grower.

Fig. 197. A Bountiful Crop of Wheat
It should be remembered always in buying fertilizers for wheat that whenever wheat
follows cowpeas or clover or other legumes there is seldom need of using nitrogen in the fertilizer; the
tubercles on the pea or clover roots will furnish that. Hence, as a rule, only potash and phosphoric acid
will have to be purchased as plant food.
The farmer is assisted always by a study of his crop and by a knowledge of how it
grows. If he find the straw inferior and short, it means that the soil is deficient in nitrogen; but
on the other hand, if the straw be luxuriant and the heads small and poorly filled, he
may be sure that his soil contains too little phosphoric acid and potash.
EXERCISE
Secure several heads of wheat and thresh each separately by hand. The grains
should then be counted and their plumpness and size observed. The practical importance of this is
obvious, for the larger the heads and the greater the number of grains, the larger the yield per
acre. Plant some of the large and some of the small grains. A single test of this kind will show the
importance of careful seed-selection.
Corn
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