EXPERIMENT STATION REPORT. 399 



case with radishes, but that they are subject to the club-root disease is 

 shown by tlio accom])anying engraving (Fig. 2) of a specimen grown 

 upon the trial grounds the present season. In this instance only the 

 slender, lower portion of tlie root shows the galls, but not unlikely the 

 edible part is also infested. 



So long as there is strong suspicions that cancer is induced by the 

 club-root germs in the roots of turnips, radishes and other cruciferous 

 plants, it is well for people to be upon their guard and eat only healthy 

 roots. 



THE MILDETIT OF LIMA BEANS. 



Late in September numerous complaints of trouble with lima beans, 

 with si>ecijnens, were sent in to the Station. The disease proved to 

 be the mildew {Pliytophtliora FhaseoU Thax.) and merit* a con- 

 sideration here as being among the most destructive of the fungus 

 troubles of the year. 



The following is from Bulletin Xo. 151:* "This fungus Avas first 

 described by Dr. Thaxterf and later more fullyj considered by him, 

 with engravings, some' of which are herewith reproduced through the 

 courtesy of the Connecticut Experiment Station. While the fungus 

 is very easily seen in itself and also indirectly prominent from the 

 destruction it produces upon the affected lima bean plants, its native 

 home is somewhat of a puzzle, as evidenced by the following lines, 

 written by its discoverer: 'Its origin * * * ig purely a matter of 

 conjecture, since, although it seems scarcely probable that so con- 

 spicuous a form should have been overlooked in so thoroughly ex- 

 plored a region as the Xew England and adjacent States, it has been 

 equally overlooked in other parts of the world, if indeed it is a for- 

 eign importation.' '' 



It was not long before the mildew was met with in other States, 

 and at the present time it is a serious menace to the growers of lima 

 beans in Xew Jersey. The records show, for example, that the dis- 

 ease has been abundant in Bergen county. "Here the pole limas were 

 so badly attax3ked that few or no pods were picked from some of the 



* " Bean Diseases and Their Remedies." 



t Botanical Gazette, vol. 14, p. 273, November, 1889. 



X Conn. Agr. Eiper. Kept., 13, 1889, pp 167-170. 



