Die, BULLETIN 33, U. S. DEPARTMENT OF AGRICULTURE. 
*TasBLE IX.—Average miscellaneous data for seven varieties of wheat grown at 
the Dickinson substation for periods of 3 to 6 years (1907 to 1913). 
[Superior index figures indicate the number of years during which the data were obtained when this 
number is less than the number of years in which the variety was grown. ] 
z Average time sae Average ac- o 
2 Average date— to maturity ses tualyield | 
| from— oa FERS peracre. |-3 
C. I. biel eae eee | ee or 
No. | Group and variety.| ~ & any ser ia tease ae 
& Ep Cram eet: |e arOnmt jeter sa ere 
= |Headed.| Ripe. | & | @% | (= | Se Sipe ss, te) 
5 a | & > PR | Beal eae 
A m4 aa < < So A | << 
Durum: Days. | Days.| In. Bu. | Cwt.| Lbs. 
1440 Kubanka...... Gail, yl Were ese bs 37 39 |3380,000 | 26.2 | 21.1] 62 
1494 ia Arnautka..... 5 | July 8 | Aug. 16 125 39 442 |2390,000 | 28.1 | 22.7| 61 
*ife: 
1517 Ghirkaseo.-4e. 6| July 6| Aug. 8! 120 31 34 |3 420,000 | 23.3 |517.3 } 60 
3022 Ry Stim eee ee 6 | July 13 | Aug. 11 123 29 535 |3563,000 | 21.6 |417.8 | 57 
3081 | Bearded Fife... .. a pJulye (2oeAwes ie 121 3 30 |3 477,000 | 19.4 | 20.3] 61 
Bluestem: 
3314 Crossbred (N. 
Dak. No. 318) 6 | July 14 | Aug. 13 125 30 33 |2550,000 | 20.0 |316.4 | 58 
3020 Haynes(Minn. 
No. 169). .... 5 | July 13 | Aug. 15 124 33 36 |2470,000 | 19.8 }316.4| 57 
The stand, as used in Table IX, means the number of plants to 
the acre. This is determined shortly after emergence by counting 
the number of plants contained in a metal frame inclosing z))59 
of an acre. Four counts are made to the plat, the total actual count 
being the number of plants on 5,5, of an acre, or, conversely, the 
number of thousands of plants per acre. Several factors, such as 
the size of the grain and the viability of the seed, influence the stand. 
There seems to be no definite correlation between stand and yield 
within the limits of 300,000 to 600,000 plants per acre. 
Spring wheat is usually headed at Dickinson by the middle of 
July and is ripe by the middle of August. Of the varieties included 
in Table LX, the Ghirka and Bearded Fife are the first to mature. 
The Marquis, a beardless fife, was the earliest maturing variety 
in 1913. This is an important factor for drought-resistant or 
drought-escaping cereals. The durum varieties head earher than the 
ordinary fife and bluestem varieties, but require a longer period 
from heading to maturity and ripen at about the same time. 
The straw yields of the bearded fife varieties are less than those 
of the durums, but more than those of the beardless fifes and blue- 
stems. The same statement may be made with regard to the weight 
of grain per bushel. The average height of the spring wheats at 
Dickinson is about 3 feet. The height of the durum varieties 1s 
greater than the average, while that of the bearded fife varieties 
is a trifle less. The average length of head is about 3 inches. The 
heads of the durum and bearded fife varieties are usually shorter 
than the average, while those of the fife and bluestem varieties 
are usually longer. The head length of the varieties within each 
group varies; for instance, the heads of the Arnautka average con- 
