Balm of G-ilead, Bean. 261 



BALM OF GILEAD. 

 FUNGOUS DISEASES. 

 Leaf Rust. See under COTTONWOOD. 



BARLEY. 

 FUNGOUS DISEASES. 



" Barley is subject to two loose smuts, both somewhat like oat 

 smut. They may be prevented by soaking the seed four hours 

 in cold water, letting it stand four hours in a moist state in sacks, 

 and finally treating in hot water as directed for oats and wheat 

 (which see), but only for five minutes, and at a temperature of 

 126 to 128 F." i 



BEAN". 



FUNGOUS DISEASES. 



Anthracnose; Pod Rust (Colletotrichum Lindemuthianum, Briosi 

 and Cavara). Description. This fungus attacks the stems, 

 foliage, and fruit of bean plants, and is, perhaps, the most 

 serious trouble against which bean growers have to contend. 

 The seed may be affected even before it is sown; it is then 

 wrinkled and pitted to a greater or less extent, the affected 

 parts being sometimes only very slightly discolored, again, very 

 markedly yellow or brown. The disease can be carried from 

 season to season by affected seed, and in severe cases the young 

 plants are so much injured by the fungus that they are not able 

 to appear above ground. Young seedlings are also destroyed, 

 as the stem is frequently cut off by the parasite, causing deep 

 and blackened indentations. The large and the small veins are 

 similarly attacked, while the green tissue of the leaf does not 

 escape. The latter shows the trouble by the appearance of 

 dark discolorations which conform in shape, to a certain extent, 

 to the surrounding veins. The part first attacked soon becomes 

 brittle and then breaks, leaving an irregular opening through 

 the leaf. A black discoloration marks the progress of the dis- 

 ease. Upon the stems and veins, affected parts are consider- 

 ably sunken and blackened, the edges being tinged with red. 



U. S. Dept. ofAgric. Div. of Veg. Path. Farmers' Bull. No. 5. 



