32 BULLETIN 270, U. S. DEPARTMENT OF AGRICULTURE. 
only two of the seven years, and in these two years the differences 
were very slight. It has also yielded more than the Manchuria (C. I. 
No. 638) in only two years, 1910 and 1914, but in both cases the 
difference has been considerable. The Success has yielded more than 
Williston No. 170 and Manchuria (C. I. No. 638) in only one of the 
seven years. 
The unsatisfactory yields of the 2-rowed varieties may be due in 
part to an unfortunate choice of varieties. However, their perform- 
ance thus far does not warrant recommending them for this section 
or describing them in detail in this bulletin. 
NURSERY TESTS OF BARLEY. 
A. considerable number of varieties and stocks of barley have been 
grown in the nursery at Williston. Ail the varieties grown in the 
field plats, as well as a number of others, were grown in the nursery. 
The greater part of these varieties, as in the field tests, were 6-rowed 
and 2-rowed bearded hulled barleys, but 2-rowed and 6-rowed 
bearded naked and 6-rowed hooded naked varieties were also included. 
The number of varieties in each class, with the average number of 
days from seeding to maturity, height, length of head, number of 
stools and of heads per plant, weight of 1,000 kernels, and weight of 
straw and of grain from a rod row for each class in 1912 and 1913 are 
shown in Table XVII. 
TaBLE. XVIT.—Average iniscellaneous data for the various classes of barley grown in the 
nursery at the Williston substation in 1912 and 1918. 
| | Yield from rod 
Num- Days | Length Stools | Heads | Weight row. 
Class. ber of | to ma- |Height. ophioadil 0c per | of 1,000 
.| races. | turity. plant. | plant. |kernels. 
Straw. | Grain. 
Bearded hulled: Inches. | Inches. Grams.| Grams.| Grams. 
SIX-TOWOG. senses 30 91 29.5 2.50 7.59 5.90 40.5 521 459.5 
TDWiO-LOWEO een teen eerias 27 92 29.0 eelta 9.50 7.46 45.1 589 430.9 
Bearded naked: 
SIX-LOWeG 2352412 9 86 2oxo DB 7.39 5.30 Sea 514 362.1 
‘RWO-OW Ede =) eee 5 85 24.1 2.41 aay? 5.44 49.8 513 372.1 
Hooded naked: 
SLX-TOWCO es St cee ce 3 87 30.0 2.59 6.77 4.40 45.1 522 348.2 
The naked varieties, as shown in Table XVII, mature somewhat 
more quickly and, with the exception of the hooded forms, have 
shorter straw than the hulled varieties. The 2-rowed hulled varieties 
stool more freely and produce more and longer heads than those of 
any of the other classes. The weight of 1,000 kernels is greatest 
for the 2-rowed naked varieties, exceeding that of the 2-rowed hulled 
by 4.7 grams. The yield of straw per row was greatest from the 
2-rowed hulled class, while the yield of grain was largest from the 
6-rowed hulled varieties. 
