168 BULLETIN 1334^ U. S. DEPARTMENT OF AGRICULTURE 
from the cross South African X Manchuria. At Aberdeen, Idaho, in 
1921 it had an average spike density of about 2.8 mm., which is con- 
siderably greater than that of the average Manchuria barley. In 
recent years it has been outstanding in yield at St. Paul, Grand 
Rapids, and Crookston, Minn. 
ODESSA (C. I. NO. 182) 
Odessa (C. I. No. 182) is a barley belonging to the same general 
group as Manchuria. Since it is adapted to conditions in southern 
Russia, one would expect the region of its best adaptation in the 
United States to be south and west of the section where Manchuria 
grows best. This is only partially true. Odessa has produced very 
high yields in South Dakota and seems particularly well adapted to 
culture in that State. On the other hand, it has done very w^ell in 
the Canadian districts where Manchuria is also at its best. For 
many years Odessa was the best barley at Ottawa, Ontario. It gave 
good yields at Brandon, Manitoba, and Indian Head, Saskatchew^an, 
but was not so good as Manchuria in Minnesota and North Dakota. 
Odessa contains several types, and numerous selections w^ere made 
from it in the cooperative studies at St. Paul, Minn. vSome of these 
have been grown in field plats in recent years. They are not of the 
same type as the barleys grown in Canada and North Dakota. 
STAVROPOL (C. I. NO. 2103) 
Stavropol (C. I. No. 2103) belongs to the same general group as 
the Coast barley and probably originated in southern Russia near 
the Caucasus Mountains. Being adapted to conditions of this region 
it is not surprising that this type of barley does well in the w^estern 
half of Kansas and the southwestern part of Nebraska, where the 
altitude varies from 2,000 to 4,000 feet and the climatic conditions 
are comparable. It has produced exceptionally good yields at Hays 
and Colby, Kans. Stavropol is not so good as Trebi or Coast at 
North Platte, Nebr., but it is one of the types now grown exten- 
sively in western Kansas. 
TREBI (C. I. NO. 936) 
Trebi barley is a pure-line selection made in 1907 in the cooperative 
breeding experiments conducted by the United States Department of 
Agriculture and the Minnesota Agricultural Experiment Station at 
St. Paul, Minn. The original importation w^as broudit into the 
United States by the Office of Foreign Seed and Plant Introduction 
from Samsun, Asiatic Turkey, in 1905, being designated as S. P. I. 
No. 15821. Mr. Papathopoulos, from whom the seed was received, 
obtained it from Trebizond. This importation contained a number 
of strains, and several other selections were made. It is a 6-rowed 
bearded barley with heads very similar to those of Coast. At Aber- 
deen, Idaho, the plants are usually several days earlier and the straw 
is a little shorter than those of Coast. In threshing, the awns break 
off from the kernel more easily than those of the Coast variety. 
At Aberdeen, Idaho (irrigated), Trebi has produced the highest 
average yield of any of the barleys grown. It also jn-oduced unusually 
high yields at Scottsbluff (irrigated) and North Platte, Nebr., New- 
lands, Nov. (irrigated), and Moro, Burns (irrigated), and Union, 
