i6 
Colorado Experimlni' Station 
Control .— (i) Select seed from healthy pods only, grown in 
fields that are not infected. 
(2) New lands should be used when available, and crop rota¬ 
tion should be practiced. 
(3) In severe cases spra}^ with Bordeaux mixture, 4-5-50 for- 
ula. 
a. First spray, when plants are 2 to 3 inches high. 
b. Second spray, ten days later. 
c. Third spray, after blossoming. 
(4) Any measure that will check ravages of insects is advised. 
Anthracnosk. —The disease is found on all parts of the bean 
plant above ground. One is usually attracted by the spots on the 
pods (Plate V, Fig. i). These are, at first, small and dark-col- 
Plate V. Fig. 1. Anthracnose of bean. Fig. 2. Late blight of celery. 
ored. They increase rapidly in size up to a* quarter-inch or more. 
Spots may run together and cover the greater part of the pod. They 
are round or oval, sunken, nearly black, or at times pinkish, and usu¬ 
ally surrounded by a reddish zone. On the leaves the spots are found 
mostly on veins and stem. The spots of the seed are located directly 
under pod spots. 
