136 Kansas Academy of Science. 



has probably been here for two or three years and in all probability 

 came here with infected seed. It causes pits or "pox" spots in the tubers, 

 which disfigure them for market purposes. These injuries are produced 

 by one of the slime mold organisms, Cytospora batata. The "pox" in- 

 juries also afford opportunity for the entrance of secondary infections of 

 black rot of sweet potato. Many specimens showed a combined infection 

 of these diseases. 



Bean Anthracnose. Colletotrichum- lindermitkianum (Sacc. & Magn.) 

 Scribn. On account of the large acreage of beans grown the past season, 

 considerable anthracnose appeared, particularly since most of the seed 

 was imported. Young plants showed lesions when only four or five inches 

 tall, and as a result many plants died. The latter part of the season 

 was not favorable for anthracnose development, and not very much evi- 

 dence was found on the bean pods. 



Cabbage Yellows. Fusarium conglutians Wr. Only one report of this 

 disease was called to the writer's notice. The plants were doing poorly, 

 turning yellow, and the leaves were dropping. 



Black Spot of Pepper. Alternaria sp. In 1915 the writer noticed, for 

 the first time, a serious trouble attacking various varieties of peppers. 

 This disease has been present every season since. It causes large black 

 sunken areas or spots on the fruit. The fruit is destroyed for commercial 

 purposes. The disease seems to be a combination of sun scald and fungus 

 injury. There is a marked difference in varietal susceptibility, the Chili 

 peppers not being susceptible. 



Blossom Di-op of Tomato. Non-parasitic. The cause of this malady 

 has not been determined. It is present in the state in greater or less 

 amounts every season. Tomato plants are apparently vigorous and ap- 

 pear to be thrifty, but the blossoms drop. Many causes have been pro- 

 posed but the real factors are problematical. Considerable loss of fruit 

 is the result. 



Blossom-end-rot of Tomato. Cause not knoivn. Very little of this dis- 

 ease was present last season. The wet weather in August may have been 

 responsible for this. In this disease the blossom-end of the fruit turns 

 black and decays or appears water-soaked. The disease appears when 

 the tomatoes are about half grown. Affected fruit cannot be used. 



Bacterial Wilt of Cucumber. Bacillus tracheiphilus E. Smith. This 

 disease is most common on the cucumbers, but occasionally occurs on 

 melons in this state. Plants may be affected when only a few inches tall, 

 or they may develop to the runner stage and then wilt. The bacteria are 

 transmitted for the main part by insects, particularly the striped cucum- 

 ber beetle, which attack the plants. 



FRUIT DISEASES. 



Anthracnose of Melons. Colletotrichum lagenarium (Pass.) Ell. & 

 Hals. This occurs to a greater or less extent every season on the water- 

 melons, and to a lesser extent on muskmelons. The foliage is not so 

 often attacked. 



Raspberry Anthracnose. Gloeosjjorium venetuyn Speg. This disease is 

 rather common in the state wherever these brambles are grown. Attacks 

 the canes, causing grayish spots, which are somewhat roughened. In 



