36 BULLETIN 30, U. S. DEPARTMENT OF AGRICULTURE. 



In this way the seed was sown under what were approximately ordi- 

 nary field conditions. About 60 to 70 winter selections and 15 to 45 

 spring selections were sown each year in increase rows. At the 

 proper time they were harrowed in the same manner as all other 

 cropped plats on the farm. 



A study of the increase rows is important only in connection with 

 the head rows. In most cases a decided improvement in the yielding 

 power of the varieties was evident after they had gone through the 

 processes of nurseiy selection. Whether this improvement was due 

 to anything more than the production of pure strains has not been 

 decided. 



MINOR CEREALS. 



A few short rows of several of the minor cereals have been grown 

 to determine their adaptability to conditions at Nephi. Some work 

 has been done with grain sorghums, broom corn, prosos, and millets. 

 The results obtained give little promise that any of these crops will 

 become profitable on the dry lands of the intermountain region. 

 They seem not to be adapted to the altitude and climatic conditions 

 obtaining in that region. They are very late getting started in the 

 spring, and they are usually injured before ripening by the early 

 frosts of autumn. 



TESTS OF THE VALUE OF DIFFERENT SIZES OF SEED. 



Experiments designed to determine the relative value of different 

 sizes of seed wheat were begun in the spring of 1909 with two spring- 

 wheat varieties. During the three succeeding years, 1910 to 1912, 

 inclusive, two winter varieties were used. 



The seed was separated by means of a series of screens into three 

 sizes, (1) 3 mm. and larger, (2) 2 to 2.5 mm., and (3) less than 2 mm. 

 In addition to these three sizes of seed ordinary bulk seed of each of 

 the varieties was used, making four lots in all. The seed was sown 

 in rows 5 feet long and 8 inches apart. Eighteen rows of each lot 

 of seed were sown, 3 rows being sown at each of the following rates: 

 2, 4, 6, 8, 10, and 12 inches apart in the row. The seed was placed 

 about 2 inches deep in the rows. A guard row was sown around each 

 group of 18 rows. There were thus four groups of each variety or 

 eight groups in all. They appeared in the field as illustrated in 

 figure 9. 



Seeding was done at the usual time and in the following manner: 

 A furrow about 2 to 3 inches deep was opened for each row. The 

 soeds were dropped at the desired distances in the row and then 

 covered. Stakes which were numbered to correspond with the 

 record numbers were placed at the head of each row. As early as 

 possible the next summer, usually about June 1, a count was made 

 of the number of plants growing in each row. The percentage of 



