. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. TILLAGE AND ROTATION EXPERIMENTS AT NEPHI, UTAH. 23 The results presented in Table VIII show no correlation between time of seeding and yield. Early seeding has given the best results in some years, while in others the best yields have come from late seeding, especially those in October. It will be observed, however, that as a rule the best'yields have come from seeding between Sep- tember 1 and October 15. SOIL MOISTURE AT SEEDING TIME. Beginning in the fall of 1908, the plats used in the time-of-seed
. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. TILLAGE AND ROTATION EXPERIMENTS AT NEPHI, UTAH. 23 The results presented in Table VIII show no correlation between time of seeding and yield. Early seeding has given the best results in some years, while in others the best yields have come from late seeding, especially those in October. It will be observed, however, that as a rule the best'yields have come from seeding between Sep- tember 1 and October 15. SOIL MOISTURE AT SEEDING TIME. Beginning in the fall of 1908, the plats used in the time-of-seeding test were sampled to a depth of 6 feet just prior to the seeding of the plats. In the later years, when two varieties were sown, composite samples of both plats were taken. The percentages of moisture in 2 4 6 & /O /2 A? /s. zo \/9.£ Fig. 13.—Diagram comparing the 10-year average yields of winter wheat obtained in the time-of- seeding tests at the Nephi substation, 1904 to 1913, inclusive. each foot of soil at seeding time as shown by these samples are given in Table IX. Table IX.—Annual and average percentages of moisture in each of the first 6 feet of soil at different dates of seeding at the Nephi substation, for the years 1908 to 1912, inclusive. Date of seeding. Depth of sampling. 1908' 1909 1910 1911 1912 Average. 1 2 3 4 5 6 ' f 1 2 3 4 5 6 Sept. 1 ( 1 2 3 4 5 6 Sept. 15 1( 16
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