962 EXPERIMENT STATION RECORD. 



ately surrounding this a .second line of spore formation is developed 

 in almost a circidar form. 



The asparagus rust in lo'wa, L. H. Pammel and E. K. Hodson 

 [/(iii'd Sfd. Bill. ■').}. pp. 00-G7. Jj</-s. /f). — The authors' attention was 

 called to the appearance of the asparagus rust during the past summer, 

 and eiiv\y in September the disease was found in considerable quantity 

 in asparagus beds on the college farm. Since that time it has l)een 

 observed and reported from a number of other stations. The disease 

 is described at some length, and its cause, Puccinia ai<paragl^ is figured 

 and d(\scribed. Two parasites of this rust, Darluca Jilum and Tuhi^rcu- 

 laria jMrslcina^ are mentioned and briefly discussed. Suggestions are 

 given for preventive measures to be adopted, which consist principally 

 in the propagation of resistant varieties. A short bibliography of the 

 subject completes the bulletin. 



Field experiments Tvith tomato rot, F. S. Eakle {Science^ ?). .^^er., 

 12 {1900), No. 303, pp. 579, 580).— A description has previously been 

 given (E. S. R., 12, p. 569) of the bacterial rot of tomatoes caused by 

 an undescribed species of Bacillus. In the present paper an account 

 is given of the experiments conducted for the prevention of the dis- 

 ease. In the previous publication the author stated as his belief that 

 the distril)ution of the disease was largely effected through the pres- 

 ence of thrips, and the experiments here reported were conducted 

 with a view of destroying those insects. Nine plats, Avith approx- 

 imately 100 plants each, were the subject of the experiments. Spray- 

 ings were made on six of the plats at intervals of 8 to 5 days with 

 kerosene, whale-oil soap, and ''Rose Leaf" tobacco extract, eight 

 applications in all lieing given to the plants. All of the fruits were 

 gathered and the presence of disease noted. The rotted fruits varied 

 from 12 to 27 per cent on different plats, the highest amount of 

 disease occurring in one of the check plats, as well as the lowest per- 

 centage. The figures given were slightlv in favor of the tobacco 

 extract treatment. This treatment gave 5 per cent less of diseased 

 fruits than the average of all plats; but as there was a range of 15 per 

 cent between the highest and lowest of the check plats, the author 

 considers the experiments inconclusive. There was an almost total 

 absence of thrips in a fair season, and on this account some other 

 m(>ans will have to be discovered for the spread of t\w disease. 



The bro-wn rot of peaches, plums, and other fruits, A. L. 

 QuAiNTANCE {Gewgia Sta. Bid. 50, pp. '237-'2G9,^fi(js. 9). — The brown 

 rot of peaches and plums has been the cause of scn'ious loss to commer- 

 cial growing of these fruits in Georgia, and the author has been led 

 to make an extended investigation as to its cause and means for pre- 

 vention. The cause of this well-known disease is the fungus ^fnnlJ/a 

 friK-tujt na, which is distributed widely over the United States and 

 Europe. In the United States it is particularly disastrous to stone 



