294 



Agricultural Experiment Station, Ithaca, N". T. 



Fostile was applied in dry form, and also in water. In the former 

 case Joosten's magazine bellows was used, and the distribution was 

 made as even as possible. When mixed with water it was used as 

 follows: 



Fostite, 8 ounces. 



Water, 2 gallons. 



Two applications were made according to the above formula, but 

 the remaining four treatments were made with a mixture one-half as 

 strong. The following table shows the results: 



plants used. 



Apple (Ewalt) 



Blackberry 



Dewberry 



Gooseberry 



Quince (Rea's Mammoth) . 

 Raspberry 





 "" a 



t3 



Sprayed . 



5 







20 



10 



15 







DRY FORM. 



Per cent 

 reduction 

 of fungi. 



25 

 

 60 

 25 

 75 

 



Per cent 

 injury from 

 application. 





 

 

 

 

 



IN WATER. 



Per cent 

 reduction 

 of fungi. 



20 

 

 25 

 40 

 75 

 



Per cent 

 injury 

 from ap- 

 plication . 



25 



15 







15 











This table shows that fostite possesses marked fungicidal properties. 

 The quinces show the greatest difference between the treated and 

 untreated parts, the injury from fungi being reduced about 75 per 

 cent; dewberries were also benefitted, and to a less extent gooseber- 

 ries and apples. When the powder was used in the dry form appar- 

 ently no injury was done to foilage of any kind. But when it was 

 mixed with water, apples, blackberries and dewberries were more or 

 less burned. This injury was in no case very serious, although it is 

 undesirable. 



In addition to the plants above mentioned, fostite was also tested 

 upon roses, forcing cucumbers, and forcing musk melons. 



During August the roses of Mr. Arthur Boole, of Ithaca, were 

 severely attacked by the common white mildew ( /Sphoerotheca 2>atinosa). 

 Fostite was applied to about 500 plants consisting of Bride and Mermet 

 roses. 



The powder was first applied August 14 and daily applications were 

 made, so that soon all the older leaves were more or less discolored. This 

 treatment was continued until August 26. During this time the plants 

 were growing rapidly and new foliage was quickly formed. In spite of 



