28 BULLETIN 430, U. S. DEPARTMENT OF AGRICULTURE. 
varieties to be highest, the early varieties ranking second. The 
early varieties have matured about August 1 and the midseason and 
late varieties about August 14. The one late variety which was 
erown, Black Tartarian, usually ripened prematurely, so that the 
date recorded for it is earlier than normal. The early varieties 
averaged about 24 inches in height and the midseason and late 
varieties about 28 inches. The weights per bushel are for two years 
and are higher for the midseason and late varieties than for the 
early ones. However, all weights are above the legal standard of 
32 pounds per bushel. The ratio of grain to straw is about 1:1 for 
the early varieties, while for the midseason varieties the ratio is 
about 1:1.35. A plat of early oats at the station is shown in figure 
10. The yields from the leading varieties of each group are shown 
graphically in figure 11. 
LIRLY SOUPLER ACRE 
SUTY Day; C1 2/65 | Reeser 2 - 
HHERSON, C935 TT TY 2 5 
SUIDSLASOV 
SED S567 3 TT A TT I ED = 
ee 
LATE 
LACH THRTARIAN CL 1°76 a rr 25 
Fic. 11.—Diagram showing the average yields of five varieties of oats on the Cheyenne Experiment Farm, 
1913 to 1915, inclusive. — 
TaBLeE XVII.—Average dates of heading and maturity, height, weight per bushel, yield, 
and ratio of grain to straw of eight varieties of oats grown on the Cheyenne Experiment 
Farm, 1913 to 1915, inclusive. 
Date of— : Yield pe i : 
G.I oa Weight ate Ratio, 
Group and variety. Noe | Height.| per 4 grain to 
Heading. ecemel bushel. Grain. | Straw.| S'2W- 
Early: Inches.\| Lbs. | Bush. | Lbs. 
SSE Bye ae ee ee meee 165\ || duly: 7222) Aueo i= - 23 34.5 PBT 805 1:1.06 
KG ers Ones eet eo ys ote A59c Eee dOznese July 31.. 24 33-5 23.1 715 Raat! 7/ 
Midseason: | 
mwedish selech-2:25525- 22 == 134 | July 20. Aug. 13 - 281 36.5 29.6} 1,230 1:1.30 
culorsde INTO BS / Se ceases Ge eee 619 uly 21..| ae 14. 25 37.7 27.8 | 1,120 dl Oe 
TLOWO Meee Caan ean aaa ee ek AG? Rd 0eee ot eee Ose. c= 28 39.5 2b. 6i| seledoe 1:1.40 
SilVermine>jceeccne eee see 714 | July 20..| Aug. 12. 28 37.2 27.0} 1,063 isa ee: 
5 AUT GAN COs sae a2 oes nse 731 | July ree Aug. 16. 2851-3120 26.7 | 1,065 Pest S25 
ate: | 
Blackehartanriaieas- ee ssa a= (OSt2 2200s | Aug. 14 26 38. 2 2255 967 1:1.34 
1 Average for two years only. 
The leading varieties of oats to date are the Swedish Select 
(C. I. No. 134) and Colorado No. 37 (C. I. No. 619) of the midseason 
group, and the Kherson (C. I. No. 459) and Sixty-Day (C. I. No. 165) 
of the early group. The Kherson and Sixty-Day were the leading 
varieties in 1913 and 1914, but were reduced in yield by hail in 1915. 
It is believed that these two varieties and the Swedish Select are 
the best ones to grow in eastern Wyoming. 
