50 



BULLETIN 1039, U. S. DEPARTMEo^T OF AGEICULTUKE. 



averaged 1.3 bushels per acre more than Kharkof, C. I. No. 1583, 

 and also considerably outyielded the parent variety, Turkey, C. I, 

 ISTo. 3055, during the three years the latter was grown. The Be- 

 loglina yielded nearly as much as the other Crimean strains except 

 in 1915, when only a single plat of that variety was grown, this being 

 in an unfavorable location. 



The awnless strains of the Alton (Ghirka Winter) group yielded 

 less than the awned varieties of the Crimean group. The Alton 

 variety was grown only in 1916 and 1917 and did not appear prom- 

 ising. Three other strains or selections of a type similar to Alton 

 have been grown. Only one, C. I. No. 5297, an awnless selection or 

 separation from Kharkof, was grown during each of the four years. 

 Although this variety yielded somewhat less than Kharkof, it has 

 the advantage of being awnless and is probably nearly equal to 

 Kharkof in quality. 



RATE-OF-SEEDING EXPERIMENTS. 



Eate-of-seeding experiments with Kharkof wheat, C. I. No. 1442, 

 were begun in the fall of 1915. The wheat was sown in triplicated 

 iiftieth-acre j)lats at the rates of 3, 4, 5, and 6 pecks per acre. Re- 

 sults were obtained during three seasons. 



The wheat was badly rusted in 1916, under which conditions the 

 highest yields were obtained from the thickly sown plats. In 1917 

 and 1918 emergence was late and the stands of wheat were thin in 

 the spring. The wheat was sown rather late during each of the 

 three seasons, because of having to wait for the removal of the corn 

 or root crop before preparing the land for wheat. 



The yields are shown in Table XXXVI. 



Table XXXVI. — Yields of Kharhof icinter vheat groicn in rate-of-seedino 

 experiments on irrigated land on the Belle Fourche Experiment Farm, 1916 

 to 1918, inchisii'e. 



Rate of seeding per acre. 



Yields per acre (bushels). 



1916 1917 191S Average. 



3 pecks. 



4 pecks. 



5 pecks. 



6 pecks. 



8.3 

 10.1 

 10.2 

 10.7 



33.1 

 34.0 

 33.5 

 31.6 



23.6 

 28.0 

 31.4 

 29.7 



21.7 

 24.0 

 25.0 

 24.0 



The highest average yield Avas obtained from the plats sown at 

 the rate of 5 pecks per acre. The 6-peck rate gave the highest 

 yield in 1916, the 4-peck rate in 1917, and the 5-peck rate in 1918. 

 When the wheat is sown late the rate of seeding should be 5 pecks 

 per acre. A seeding of less than 4 pecks per acre may be expected 

 to cause reduced yields. 



