

428 AGRICULTURE OF MAINE. 



they will open into a common conductor leading to the spray 

 tank. However, on account of the corrosive action of the mix- 

 ture the iron faucets will soon rust out. 



Where running water is available it may be conducted to the 

 platform with a garden hose or a metal pipe may be used, so 

 arranged that it may be taken down or emptied before cold 

 weather. Where running water is not available the platform 

 may be erected alongside of a well, cistern, stream or pond. A 

 cheap iron pump is placed on the platform, high enough so it 

 will deliver over the tops of the barrels and connected with the 

 water supply with a lead pipe. 



BORDEAUX MIXTURE WITH IRON STICKER, FORMULA 2. 



Copper sulphate (blue vitriol) 2 pounds 



Iron sulphate (copperas) 2-4 



Fresh stone or lump lime 4-6 



Water to make 50 gallons 



This formula is proposed and recommended by Dr. A. D. 

 Selby of the Ohio Experiment Station. It has not been used 

 by the writers in Maine, but Doctor Selby makes the following 

 statement with regard to it : * 



"In this spray the iron sulphate is added in order that it may 

 be precipitated by the lime and serve as a more complete sticker 

 than is provided by standard bordeaux mixture. It would ap- 

 pear possible by the weak solution as given for the copper com- 

 pound and by this possible efficient sticker to make the reduced 

 amount of the copper sulphate do the work as fungicide just 

 as effectively and Avith less risk of foliage injury than with 

 standard bordeaux mixture. Trials made up to this time upon 

 apples in full foliage, upon grapes, and upon potatoes indicate 

 that the spray is efficient. The iron sulphate is not considered 

 G fungicide." 



Where spray injury upon apple trees is experienced and the 

 orchardist docs not wish to go to the trouble of preparing his 

 own lime-sulphur sprays or go to the expense of purchasing 

 the prepared brands of lime-sulphur, a trial of this modified 

 form of bordeaux mixture is suggested. 



* Selby, A.. D. Ohio Exp. Sta. Bui. 214. p. 358, 1910. 



