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BULLETIN^ 1334, IT. S. DEPARTMENT OF AGRICULTURE 
the more favorable soils of the upper counties of Ohio, thence south- 
ward to central Pennsylvania and east to the coast. The accompany- 
ing map shows that this humid spring-barley region extends far into 
Canada. In most of this region the barleys are of the Manchuria 
type, although in a small area in Maine and southeastern Canada 
Chevalier is grown and there is a considerable acreage of Hanna and 
other 2-rowed barleys in New York and Pennsylvania. 
Just west of this humid region is an area of summer rainfall where 
the precipitation is quite light. Here a number of 2-rowed varieties 
do particularly well. This is the largest area in the United States 
suited to the growth of the 2-rowed sorts. It includes southwestern 
Iowa, northwestern Missouri, all of Nebraska, extensive areas in the 
Fig. 10. 
-Map of the United States and Canada showing the areas and sections to which groups 
of barleys are adapted 
western parts of the Dakotas, the northeastern half of Wyoming, and 
all of Montana with the exception of a western fringe. It extends 
far into Canada, embracing all the territory west of Indian Head, 
Saskatchewan, to the mountains, and theoretically should connect 
with the Chevalier district of the extreme eastern Provinces by cross- 
ing above the central Manchuria area. All of the 2-rowed barleys 
grown here except White Smyrna are spring sorts adapted to humid 
climates. In Montana, where it is cool and the days are long, the 
varieties of the Chevalier group are grown quite successfully. They 
are even more successful in Canada, where these conditions are inten- 
sified. In those portions of Wyoming, North Dakota, South Dakota, 
and Nebraska adapted to 2-rowed barleys Hannchen and White 
Smyrna are superior sorts, Hannchen producing higher yields where 
there is more moisture. The Thorpe barleys have been tested in the 
