JO The Colorado Experiment Station 
Bean “Streak” * 
For want of a better name, the term “Streak” is used here to 
designate what appears to be a new and undescribed disease of beans, 
which was observed in Colorado for the first time during the sum¬ 
mer of 1916. Whether this is in reality something new, or merely a 
different manifestation of an old trouble, remains to be seen. It 
attacks stems, leaves and pods, the sympioms on the first two of these 
being much the same as with the bacterial blight. On the pods there 
appear peculiar rusty or orange-brown discolorations in the form of 
irregular splotches, just as if a brown stain had been spattered on 
them, and had,run down in lines or streaks. (See Fig. V.) The side 
of the pod next to the plant is practically free from the discoloration, 
while the outer side may be more or less affected over its entire sur- 
FiiT. V.—Bean pods affected with “Streak” ! 
face. The leaves are destroyed and the plants become defoliated be¬ 
fore the crop matures. 
