606 EXPERIMENT STATION RECORD. 



Full directions are given for the preparation and application of the 

 Bordeaux mixture. 



Experiments for the prevention of potato rot, J. Hendeick 

 {Glasgoic and West of Scotland Technical College, Agl. Dept. Rpts. 1895, 

 ;pp. 49, 50). — A report is given of 2 series of experiments to test the 

 efficiency of Bordeaux mixture in i^reventiug potato rot. Two formu- 

 las were used in making the fungicide. One, which is called the 2 per 

 cent solution, was copper sulphate 4 lbs., lime 2 lbs., and water 20 gal.; 

 the other, called the Ih per cent solution, was copper sulphate 3 lbs., 

 lime li lbs,, and water 20 gal. The plats of potatoes received 1 and 2 

 applications of each solution. On none of the plats was the disease 

 abundant, although the variety of potatoes grown was one that was 

 considered especially liable to disease. 



In the first series there was a gain over the best check plat at the 

 rate of 46 bu. per acre in favor of spraying twice with the li per cent 

 solution, ' In the second series the greatest total yield was from the 

 check plat, although there was a decrease in the quantity of diseased 

 potatoes in every sprayed plat. 



The author appears to regard the results of these experiments as rather 

 unfavorable to the use of Bordeaux mixture, but from the detailed 

 account it would appear that the applications were not made with suflfl- 

 cient care and thoroughness, and, the amount of disease on the check 

 plats being small, the difference between the treated and check plats 

 would necessarily be slight. 



On the prevention of smuts, L, Foster {Montana Sta. Bui. 10, pp. 

 40-46). — Kotes are given on experiments conducted for the prevention 

 of smut of wheat, barley, and oats. 



The treatments tried for preventing wheat smut were hot water and 

 copper sulphate solutions, the details of manipulation being given. The 

 best results followed from grain receiving the hot-water treatment, 

 although the copper sulphate solutions reduced, and in some cases pre- 

 vented, all smut. 



In the case of barley and oats the treatments were the same, but as 

 no smut appeared in any of the barley plats the results can not be given. 



The oats were treated with hot water at temperatures ranging from 

 126 to 150° and varying strengths of solutions of potassium sulphid, 

 corrosive sublimate, zinc chlorid, zinc sulphate, potassium bicarbonate, 

 and potassium permanganate. The results secured are tabulated, from 

 which it appears that hot water was the most effective of the remedies 

 tested, and immersion for 10 minutes at low temperatures better than 

 less time at liigher temperatures. 



Club-root experiments, J. E, Campbell {Glasgoic and West of Scot- 

 land Technical College, Agl. Dept. Rpts. 1895, pp. 9, iO),— Experiments 

 were conducted to test the liability of turnips and Swedes to infection 

 by means of inoculation material sown over the drills prior to seeding. 

 The tests showed that every one of the 21 varieties was more or less 



