POTATOES. 2fi7 



(7). The Paris green or London purple which is ordinarily applied 

 for the potato beetle maj^ be mixed into and applied with the Bor- 

 deaux mixture with as good results as if applied alone. 



DISCUSSION. 



Prof. S. B. Green: This season I treated five rows on Como 

 avenue, near the experiment station, belonging to a farmer 

 living there. I treated five rows. 250 feet long, right through 

 his potato patch. After treating, I told him if there was any 

 injury done I would see that they were well insured, but two 

 weeks after the first treatment anybody could see the differ- 

 ence between those that were treated and those that were not, 

 and those five rows that were treated yielded at the rate of 

 forty bushels per acre more than the rest of the patch; but 

 that was not as great a difference as there would be some sea- 

 sons, because the tops were all cut off by frost. I would sug- 

 gest to the society that they try the Bordeaux mixture. In 

 applying the Bordeaux mixture you can mix it with Paris 

 green. 



Mr. Brackett: At what time do we have to make the first 

 application ? 



Prof. Green: When the tops are about eight inches high. 

 You would not get an increase on early potatoes, but on late 

 potatoes. About the middle of July make one application, 

 then another about the first of August and another about the 

 20th of August; one has to use his judgment about this. Three 

 applications are a great plenty. 



Mr. Pearce: Now, we have a spawn or germ that produces 

 a species of smut on wheat and on corn, and I have been exper- 

 imenting a good deal with wood ashes of late. I think I can 

 prevent the smut on corn by soaking it in lye. I have done it, 

 and I think I can destroy that germ. What would be the result 

 'of soaking our potatoes in lye or potash solution? 



Prof. Green: The trouble about that would be to get it 

 strong enough to destroy the fungus without destroying the 

 bud. 



Mr. Wedge: How is it about getting rid of the rot on the 

 tomato"? 



Prof. Green : I believe the best plan is to select a situation 

 where there is a good circulation of air, and then so far as 

 possible select those varieties that resist the rot the most. It 

 is well known that the Acme in . some seasons is very liable to 

 rot. The rot in tomatoes can be entirely stopped by the use 

 of Bordeaux mixture. Some people spray with the mixture 



