ANIMALS INJURIOUS TO FARM AND GARDEN PRODUCE. 1 7 



November i2th and i3th, whereas in 1911, when three broods were 

 general, hybernating females were common early in October. 



VII. REMEDIAL MEASURES. 



Wherever there has been an attack of this insect the land should 

 be treated with ground unslaked lime, 15 cwt. per acre, and deeply 

 turned in. 



Various fluids have been tried to prevent the flies laying their 

 eggs on the plants. The following has proved the most effective : 



Paraffin ... ... ... ... i gallon. 



Soft Soap ... ... ... ... J Ib. 



Ammonia ... ... ... ... 4 oz. 



Water ... ... ... ... 10 gallons. 



This should be sprayed on the plants towards the end of May. 



Top-dressing with nitrate of soda and common salt has also 

 proved valuable in forcing on the plants. The quantities per acre 

 are from i to i^ cwt. of nitrate soda and 2 to 3 cwt. of salt. 



Any fertilising substance which favours rapid and healthy growth 

 is valuable. 



As the outer leaves are usually the ones to be first attacked, it 

 is well on small areas to remove and burn these. 



