CEREALS OlST THE BELLE FOURCHE EXPERIMENT FARM. 



19 



Table X. — Average agronomic data for KuhanJca durum spring wheat grown 

 in rate-of-seeding experiments on dry land on the Belle Fourche Experiment 

 Farm, 1913 to 1917, inclusive. 



Rate of seeding, per acre. 



Emer- 

 gence to 

 maturity. 



Height. 



Weight 



per 

 bushel. 



Stand 

 per acre.a 



Yields per acre. 



Grain. Straw 



Specks 



4 pecks 



5 pecks 



6 pecks, 



7 peeks 



Days. 

 94 

 93 

 93 

 93 

 ■ 93 



Inches. 

 30 

 30 

 30 

 29 

 29 



Pounds. 

 58.6 

 58.7 

 58.3 

 58.3 

 58.2 



Plants. 

 382, 000 

 428, 000 

 517, 000 

 604,000 

 678, 000 



Pounds. 

 1,158 

 1,140 

 1,164 

 1, 134 

 1,122 



Pounds. 

 2,458 

 2,421 

 2,649 

 2,500 

 2,479 



a Average for 3 years, 1915, 1916, and 1917. 



I)ATE-OF-SEEDING EXPERIMENTS. 



A date-of-seeding experiment with Kubanka spring wheat was 

 conducted in 1912, 1915, and 1916. In 1912 the crop was a failure 

 except on the late-sown plats, because of drought during June. In 

 1915 and 1916 tlie yields from the early sowing were highest, with 

 the later sowings yielding considerably less. The yield from the 

 earliest sowing in 1916 is not shown, because the wheat was sown 

 on land where soil blowing was unusually severe. The yields from 

 the date-of-seeding experiment are shown in Table XI. 



Table XI. — Yields of Kuhanka durum spring wheat grown in date-of-seeding 

 experiments on dry land on the Belle Fourche Experiinent Farm in 1912, 

 1915, and 1916. 





Date sown. 



Yields per acre (bushels). 





1912 



1915 



1916 



Average. 



April 9 to 25 





 

 13. 5 



52.5 

 37.2 

 27.3 



14.2 

 12.3 

 4.9 



22.2 



May 1 to 8 



16.5 



May 15 to 26 



15.2 







As shown in Table XI, the early-sown wheat yielded an average of 

 22.2 bushels per acre, the plats from the second sowing yielded 16.5 

 bushels, while those sown last yielded only 15.2 bushels per acre. This 

 was in accordance with the usual experience with spring wheat, oats, 

 and barley at Newell, viz, the earlier the sowing the higher the yield. 



NLTRSERY EXPERIMENTS. 



Many varieties of spring wheat were grown in rows, but because 

 of their apparent lack of adaptability were not sown in plats. A 

 considerable number of foreign varieties were thus tested in a pre- 

 liminary way and later discarded. Most of the nursery experiments 

 with spring wheat consisted in the testing of pure-line selections 

 made at Newell from both durum and common spring wheats. Selec- 



