6 
Colorado Experiment Station 
more than 300 miles distant and at an altitude 2,500 feet lower, 
was of more than passing interest. This led the writer to visit the 
Longmont section on June 21 , in company with Mr. H. J. Cains, 
of the Empson Company. We found the garden peas affected in 
the same identical manner as the field peas in the San Luis Valley. 
One field of about 12 acres was in very bad condition. The 
attack was well advanced and general; the vines were watery, olive- 
green to black in color; many were entirely destroyed, their grow¬ 
ing tips curled and dead; others were green and in blossom, while 
some bore small pods. It was practically impossible to find a 
perfectly healthy plant in the whole 12 acres. The crop of shelled 
peas from this field was estimated at 50 percent. This same land 
was in peas the preceding year, but no disease was observed. 
The blight was present, but to a lesser degree, in an adjoining 
tract O'f approximately the same size. In both cases the Alaska 
pea had been planted, the sowings having been made between the 
15 th and 20 th of April. 
A few infected plants were found in each of two other fields 
of the same variety of a somewhat later sowing. 
A careful examination was made of several other Alaska 
plantings which were sown from ten days to two weeks later than 
any of the above, but in no instance did we find any of the trouble. 
In addition to th'e Alaska, which is the earliest pea planted by 
the Empson Packing Company, two later sorts are grown for 
canning purposes. A diligent search for the disease on these later 
varieties failed to show even a trace. 
A number of gardens in Fort Collins experienced a mild 
attack of blight on the early peas, but in no case was it sufficiently 
serious to cause any appreciable loss to the crop. 
From these observations of one season only, it appears that so 
far as garden peas are concerned, only the earliest plantings of the 
early varieties are affected, and that the later sorts are practically 
free from the trouble. 
We have endeavored to ascertain information regarding the 
distribution of the disease in the Western States, from' the re¬ 
spective experiment stations, and up to the present time it has not 
been observed in Kansas, Montana, Wyoming, Nevada, Idaho. 
Arizona, or New Mexico. Professor J. J. Thornbee, of the Ari¬ 
zona Station, recalls having seen such a disease in both Nebraska 
and South Dakota. Professor G. R. Hill, of the Utah Station, 
reports the trouble as occurring in 1914 at Riverdale, Utah. Pro¬ 
fessor F. D. Heald, of the Washington Station, has recorded a 
bacteriosis of peas which may be the same as the Colorado malady. 
He has very kindly submitted pressed specimens for our examina- 
