202 



VEGETABLE DISEASES ROUND TABLE 



CLUB ROOT 



A Member: I would like to ask if it is considered safe to plant 

 cabbage more than two years on the same land for fear of club root. 



Dr. Reddick: I should not think it would be safe. 



A Member : We manure very heavily for our early cabbage, and 

 just as we get the land in the condition we want it for a good crop, we 

 have to move off. 



Dr. Reddick : The disease could be kept down by the use of lime. 



A Member: We did lime heavily a year ago last fall. 



Dr. Reddick: Next year you ought to begiu to see results from 

 it. How much did you use? 



A Member : Close to a ton of ground limestone. 



A Member : A ton of burnt lime would be none too much for club 

 root. 



Dr. Reddick: Possibly there is the difficulty, you did not use 

 enough. 



Question : Would it be safe to use the land again after three years? 



Dr. Reddick: Three years is not long for the club root. I 

 would keep off it, if I could. 



Mr. Greffrath: I have had quite a good deal of trouble with 

 maggots in carrots, and I would like to find a remedy for them. I 

 also had that same experience one year with beets. Apparently the 

 same maggot attacked them and ruined my entire crop of three acres. 

 I did not see the trouble the year before or the year after. The 

 maggot in the beet would just work on the crown that w^as exposed 

 above the surface of the ground, and all the leaves would die right 

 down. 



Dr. Reddick: I do not know anything about that. I never 

 saw it. 



Mr. Greffrath : We had an experience in onions last year that 

 we had never seen before. During the early part of iVugust and up to 

 about the fifth, our crop was a magnificent sight. The foliage was 

 very tall. Then little spots of blight appeared here and there, and we 

 had several days of foggy weather. When that fog lifted, our entire 

 onion fields were black, and in a short time the leaves dried down. 

 As the wind passed over the field, it would raise a regular black cloud. 

 I wonder if anybody has had experience with that kind of blight. 

 What is it? 



