. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CROPS ON ALKALI LAND, HUNTLEY PROJECT, MONTANA. 9 Table III.—Average total salt content of the soil on five -plats not subsoiled and on a subsoiled -plat, 1913. Plats. Num- ber of borings. Top 3 inches. 3 to 6 inches. 6 to 12 inches. Aver- age, first foot. 12 to 24 inches. Aver- age, top 2 feet. 24 to 36 inches. 36 to 48 inches. Aver- age, top 4 feet. Nos. 5,7,9,11, and 12. No. 2, subsoiled 50 10 .24 .22 .25 .24 .33 .28 .77 .79 .53 0 .08 .19 .11 .56 .34 .73 .69 .52 The subso
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CROPS ON ALKALI LAND, HUNTLEY PROJECT, MONTANA. 9 Table III.—Average total salt content of the soil on five -plats not subsoiled and on a subsoiled -plat, 1913. Plats. Num- ber of borings. Top 3 inches. 3 to 6 inches. 6 to 12 inches. Aver- age, first foot. 12 to 24 inches. Aver- age, top 2 feet. 24 to 36 inches. 36 to 48 inches. Aver- age, top 4 feet. Nos. 5,7,9,11, and 12. No. 2, subsoiled 50 10 .24 .22 .25 .24 .33 .28 .77 .79 .53 0 .08 .19 .11 .56 .34 .73 .69 .52 The subsoiled plats showed little advantage in yield, however. The average yield of winter wheat on two plats subsoiled was at the rate of 35 bushels per acre, while the average of seven plats not sub-. Fig. 5.—Winter wheat in field M-II on July 14, 1913. In 1911 and 1912 a crop of rye was plowed under on this field as green manure, according to the first method. The winter wheat in this field yielded bushels per acre in 1913. soiled was bushels per acre. Subsoiling is a difficult and expen- sive operation, and it is doubtful whether the differences in salt content, as shown above, are of sufficient importance to indicate that subsoiling would be profitable. Crops grown in 1913.—Winter wheat, alfalfa, and sugar beets were grown on this land in 1913. Ten plats of winter wheat and one plat of each of the other crops were planted. At the time of planting winter wheat, in September, 1912, the ground was in excellent tilth. This crop made a much more uniform growth than the preceding crop of rye. (See fig. 5.) The alfalfa and sugar beets were planted on May 6, 1913. A good stand of alfalfa was secured and the crop was clipped on September 6. The yields of these crops are given in Table IV. 52602°—Bull. 135—14 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these i
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