38 BULLETIN 30,U. 8. DEPARTMENT OF AGRICULTURE. 
sizes of seed of these varieties. It was as difficult to get a sufficient 
number of the small-sized Kubanka kernels as it was to get the 
large-sized Ghirka kernels. The different grades of seeds were ob-. 
tained, however, and sown as described. A summary of the results 
obtained is presented in Table XV. ; 
Data relative to percentage of survival, number of plants maturing, 
number of heads per plant, and yield in grams are presented. The 
figures in each column of the table represent the average of three 
rows. For example, the first figure in the first column, 61, represents 
the average percentage of survival of large seed of Kubanka sown 2 
inches apart in three rows which were 5 feet long and 8 inches apart. 
Averages of all rates of seeding for each size of seed are given, as well 
as averages of all sizes of seed for each rate of seeding. 
TABLE XV.—Resulis obtained from sowing large, medium, small, and unseparated seed 
of two varieties of spring wheat, at different distances in the row, at the Nephi sub- 
station in 1909. 
Percentage of sur- | Number of plants Number of heads Yield of rows 
vival. maturing. per plant. (grams). 
Variety and size of | Distance be- Distance be- Distance be- Distance be- 
seeds. tween seeds tween seeds tween seeds tween seeds 
(inches). |Aver-| (inches). Aver- (inches). |Aver-| (inches). |Aver- 
age. ___| age. age. age. 
[eel Tenitwal | | | | 
24 6 s {10 12 2/4/6/8 1012 2| 4/6) 8 [10 12 2/4|6 8 10112 
| 
Kubanka (C. I. No. | eat | 
1440): | lie} altel | | | 
Large (3 mm. | [ety | 
and larger). - -}61/69 64/67|57)67) 64,19)11 7) 6) 4) 4) 9 2) 3) & 4 4 3 42/33/31 36 25 24 32 
Medium (2 to | lie | | eel 
WA Naewi Ns) s Sece 58) 69/45) 44/43/33 49/18}11| 5) 4| 3) 2 7| 2) 2) 4) 5) 6) 4 4/32/29)21 24 32/14 25 
Small (less than | | | | alia) | | 
PATIt090Y)) me an = }26| 25 36) 33/29/33 30) 8} 4) 2) 3) 2) 2) 4) 3) 5] 5) 3) 4) 4 4/30)22)18)12|16)11 18 
Unseparated . . .|45|50!54/55/57|67 55}14} 8) 6| 5) 4 4 7) 3) 4) 5) 5) 5) 6 5/42/36 38 26/27 29 33 
—|—_} —_} — | pa es ss sl Sel i Us] es RS ss 
Average... ... 48/53 50) 50/46/50 50/15} 9) 5 5 3) 3 7| 3} 3} 4] 5] 5| 5 4)37|30)27 24 25/20 27 
Ghirka (C. I. No. | | | | as) 
1517): | | | | 
Large (3 mm. 
and larger). . .|68 69 73/78 86/83 76}21)11) 8) 7| 6) 5 9) 3} 5) 6) 6] 7) 6 elie 39 42 30 39 
Medium (2 to | | | | | Fel 
Ze ENIITS) = 22 61,56 64 67/71/50 61/19) 9 7 6 5) 3 8} 3] 5) 6) 7} 8) 9 6 50/33 39/34/28 28 35 
Small (less than | | | 
7a 6000p) pee sae 55 62 36 44 57/33 48/1710 4 4 4) 2 7| 4) 5} 9) 8) 7) 6 7 44/38 31 24 20 12 28 
Unseparated . . .|61| (56 lal 43/50 50]19| 9 5 4 3) 3 7| 4) 6) 7) 7 9 7 56/43 39/28 23 23 30 
Average....-- 61/61) 55586454 o7 iis 6 5 4 3 8] 4] 5] 7| 7] 8) 8 Bee wi 23 34 
oS 
Table XV shows that the large seed of both varieties had the highest 
percentage of survival in every instance. The small seed had the 
lowest percentage of survival in most instances, while the average 
survival of the original, unseparated seed was generally high. The 
large seed produced the greatest number of plants which matured. 
Fewer heads per plant, however, were produced by the large seed 
than by any other grade. The yields obtained from the large seed 
were higher, in most cases, than were those obtained from the medium 
or small seed. ‘There was little difference, however, between the 
yields obtained from the large and the original, unseparated seed. 
