208 



Kiln Dust for Manuring Potatoes. 



solution is 12 lbs. of copper sulphate in 40 lbs. of water per 

 acre. A dry time should be chosen, and if rain comes soon 

 after spraying, the operation should be repeated. 



Kiln Dust as a Manure for Potatoes. 



Some experiments on the manuring of potatoes have been 

 carried out during the past two years at Blid worth, under the 

 direction of the staff of the Midland Agricultural and Dairy 

 Institute. 



These experiments were carried out on a farm and on a piece 

 of allotment ground where potatoes are grown very frequently 

 year after year. 



An interesting feature of these trials has been the results 

 obtained by the application of dressings of kiln dust as com- 

 pared with those from dressings of farmyard manure and from 

 ordinary mineral artificial manures. 



On the farm the average results of the two years' experi- 

 ments furnished the following net profits per acre (debiting 

 the whole cost of the manure to the potato crop) from the 

 three most profitable dressings. 



£ s. d. 



From 1 ton of kiln dust - - - - - - 2 15 8 



From \ ton of kiln dust 3 15 4 



From complete dressing of 3^ cwts. kainit, i§ cwts. 



nitrate of soda, and i\ cvvts. superphosphate - - 2 17 6 



On the allotments, kiln dust also yielded the greatest 

 profit, and the complete dressing of artificials ranked next 

 as was the case on the farm plots. 



Cabbage-root Fly {Phorbia brassucey 



This fly is a great pest in most cabbage growing districts 

 in Great Britain, and also causes] much harm in North 

 America. The chief authority on this insect is Professor 



