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Russia, Germany and Austria-Hungary, in order named, are the principal barley producing countries, contributing twothirds the combined production of Europe and Asia.

468. Barley Crop of the United States. In extent of production, barley ranks fourth among the cereals in the United States. The crop is, however, of much less importance than wheat, maize or oats. The acreage of wheat is more than onehalf, that of oats less than one-third, and that of barley about one-twenty-fifth the acreage of maize. Relatively, the acreage of barley is increasing. In common with the other cereals, barley has decreased in value per bushel; the average price during the ninety decade was forty-three cents, a decrease of sixteen cents from the previous decade. The value per acre in 1899 of the four crops named above was: wheat, $6.90; oats, $7.24; maize, $8.71; barley, $9.34.

469. Barley Crop of Canada.-The following table shows the average annual production of five cereals in the United States. and Canada for five years, 1898-1902 inclusive, in million bushels : 1

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470. Center of Barley Production. In 1850 the North Atlantic division produced eighty-one per cent of the barley crop of the country; in 1900 the North Central division produced sixty-eight per cent, and the Western division twenty-eight per cent. The center of production has moved westward from about the center of New York in 1850 to near the junction of Iowa and South Dakota in 1900. In 1850 New York teported 69.4 per cent of the entire barley crop; in 1900, while reporting nearly the same number of bushels as in 1850, her contribution was only 2.5 per cent of the entire crop. The growth of barley is so concentrated in this country that nine States furnish ninety-one per cent of the total production. To produce an equal percentage of the maize crop, nineteen States would be required. The nine States referred to are California, Minnesota, Wisconsin, Iowa, South Dakota, North Dakota, Washington, New York and Nebraska ; the first four of which produce three-fourths of the total crop.

471. Yield per Acre.-The average annual yield per acre of barley during the decade 1893-1902 was nearly twenty-four (23.7) bushels, an increase of more than one bushel over the previous decade. The yield per acre is quite uniform in all except the Southern States, which yielded about four bushels below the average. Thirty-five to forty bushels is considered a good yield per acre, and where the soil and weather conditions are very favorable, a higher yield may be obtained.

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472. Exports and Imports. During the past decade the annual export of barley has been about eleven per cent of the production, San Francisco being the chief exporting center. The United Kingdom, Australasia and Portuguese Africa receive the largest quantities of the exported grain. The import has been comparatively small, coming chiefly from Canada.

473. Commercial Grades. The Illinois Board of Railroad and Warehouse Commissioners recognizes the following classes and grades:

Barley Nos. 1, 2, 3, 4 and 5.

Scotch barley Nos. 1, 2 and 3.

Bay Brewing barley Nos. 1, 2 and 3.

Chevalier barley Nos. 1, 2 and 3.

The rules for grading barley are as follows:

"No. 1 Barley.-Shall be sound, plump, bright, clean and free from other grain. "No. 2 Barley.-Shall be of healthy color, not sound enough and plump enough for No. 1, reasonably clean and reasonably free from other grain.

"No. 3 Barley.-Shall include all barley slightly shrunken and otherwise slightly damaged barley, not good enough for No. 2.

"No. 4 Barley.-Shall include all barley fit for malting purposes, not good enough

for No. 3.

"No. 5 Barley.-Shall include all barley which is badly damaged, or from any cause unfit for malting purposes, except that barley which has been chemically treated shall not be graded at all."

Grades for Scotch, Bay Brewing and Chevalier barley are the same as for barley, except they must be of the variety named, and in the case of the last two shall be grown in the Western States. More No. 3 barley is dealt in on the Chicago market than any other class or grade. The most important item in fixing the grade is the color, which should be as light as possible. Rains or dews readily discolor the hull after the grain is ripe and greatly lower the grade. No. 2 barley must weigh fortyeight pounds to the bushel, while No. 3 barley may weigh a "few" pounds less.

V. HISTORY.

474. History.-The culture of barley is very ancient. Both it and wheat were cultivated before we have any history of man. In ancient Egypt it was used as food for man and beast, and also made into beer. It was the chief bread plant of all those nations from which we derive our civilization. Barley continued to be the chief bread plant of continental Europe down to the sixteenth century. The introduction and wide cultivation of potatoes and the rapid development of the growth of wheat have brought about a decline in the use of barley. Barley was used

to some extent by both man and beast in the early colonies of this country.

Practicums.

475. THE PLANT.—Each student should be given a printed or typewritten sheet, as indicated below, and requested to describe two or more types or varieties, as indicated. The study may be made in the field, or from fresh or dried specimens in the laboratory.

I. Height of culm: average of ten culms to tip of upper beard

2. Vigor of plant: strong; medium; weak.

3. Diameter below spike: average of ten culms

4. Wall of culm: thick; medium; thin.

5. Color of culm: light yellow; yellow; bronze.

6. Foliage: scanty; medium; abundant.

7. Rust: leaves, per cent

8. Smut: per cent

.; culms, per cent

9. Spike: erect; leaning; nodding.

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10. Spike: two-rowed; four-rowed; six-rowed.
II. Length: average of ten spikes from lower joint
of rachis to tip of flowering glume (not count-
ing beard) of upper spikelet

12. Number of joints of the rachis: average

ten

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13. Number of spikelets at joint of rachis

14.

Number of grains per spike: average ten spikes

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476. THE GRAIN.-Furnish each student with one quart of the grain of two or more varieties of barley, preferably a two-rowed, six-rowed and hullless variety.

Grobecker's grain tester. Move 15.
handle of knife, b, to the right,
thus opening the receiver, c-a;
put the barley to be tested
into cup, a, when, by slightly
shaking the instrument, the
grains will fill the fifty holes.
Now press the knife, b, back
to its original position, thereby
cutting each grain crosswise
through the middle. Then
move handles, a and b, aside,
thereby laying open part c,
when the number of mealy,
half mealy and glassy grains
may be counted.

I.

Color of grains: light yellow; yellow; dark
yellow.

2. Impurities: remove perfect and broken grains
from ten grams; weight of perfect grains
.; weight of broken grains
3. Volume weight: weight per bushel obtained by
weighing one pint

4. Specific gravity: use picnometer (203)

5. Weight: one hundred grains . .

6. Hull: thick; medium; thin; per cent in twenty-five grains

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9. Plumpness: plump; medium; shrunken.

10. Length of grain: ten grains

II. Width of grain: ten grains

12.

Thickness of grain: ten grains

13. Germination: place 100 grains between
well moistened filter paper or flannel
cloth, and keep at temperature of
80° F. Remove sprouted grains at
end of each twenty-four hours for
five days; first day
.; second
.; third
.; fourth

fifth

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Seed germinating apparatus used by the United States Department of Agriculture. a, inlet pipe; b, outlet pipe; c, thermo-regulator; d, "guide light" gas delivery tube; e, " guide light"; f, opening into water cavity; g,maximum and minimum thermometer; h, thermometer; i, germinating pan; kk, outlets for carbon dioxide. (Yearbook 1894, p. 402.)

477. SOIL FERTILITY IN RELATION TO BARLEY.-Barley is well adapted for pot culture. (432) Where practicable, require each student to apply the following fertilizing ingredients in the rates per acre indicated below. Require the student to calculate the amount of fertilizers required per plat from such commercial goods as may be available in his market. Also require the student to show the method of calculating yields from check plats. See Ohio Bul. 138, p. 40. Make each plat four to eight rods long and the width of one round of the wheat drill. Leave three feet between each plat, and keep this space cultivated so as to prevent growth of weeds. Outer drill row may be cut by hand and discarded in order to get yields similar to those obtained in ordinary prac tice. Where practicable, each student should be required to carry this trial through from start to finish, calculating fertilizers required, mixing materials from raw goods, applying fertilizers, sowing barley (wheat or oats may be substituted), harvesting crops and calculating yields. Reasons for each of the steps taken should be emphasized.

Place upon the plats commercial fertilizers in quantities equivalent to pounds of elements indicated:

I. None.

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