INSECTS, DISEASES, REMEDIES 57 



to spray more than three times. Various stations* 

 have done much work along this line and data can 

 readily be obtained by addressing the directors. Fig. 

 14 shows a bean plant affected with anthracnose. 



Bacteriosis (Pseudomonas phaseoli) is a bacterial 

 disease which affects both lima and field beans. 

 Some varieties seem to be more susceptible to it 

 than others. It was first brought to notice by Pro- 

 fessor Beach who found it abundant and wrote** con- 

 cerning it. It develops into a serious malady about 

 August I, and does the most damage during the hot 

 weather of that month. It appears upon foliage, 

 stems and pods and is easily distinguished from any 

 other trouble of beans. The foliage is usually the 

 first to be attacked. On this it produces large, wat- 

 ery, brown patches, that shortly become dry; the 

 tissue curls and breaks away, leaving the foliage 

 ragged and worthless. Halsted*** says the pods are a 

 favorite part for the bacteriosis, where it first shows 

 itself as small water-clogged, discolored spots that 

 spread rapidly and produce large patches, with bor- 

 ders tinged with pink and bearing a pale amber col- 

 ored incrustation upon the most affected part. All 

 that has been said concerning the anthracnose as to 

 its being perpetuated and spread through the seed, 

 holds good with bacteriosis ; in fact, the two diseases 

 may, for all practical purposes be considered as one, 

 so far as the remedy is concerned. 



Treatment. Bacteriosis is due to a micro-organ- 

 ism. Spray thoroughly with the same formula and 

 in the same way as recommended for anthracnose. 

 So far as Halsted* could find, there is no indication 



*N Y Geneva Bui 48; N J Bui 151; Del Bui 163. "Identity of 

 Anthracnose of the bean and watermelon, 1893. ***N J Bui 151. 



