VEGETABLE GARDEN PESTS 49 



Carrot Fly. The presence of this pest is outwardly 

 recognized by the leaves turning yellow and withering. 



On examination of the young carrots, larvae or mag- 

 gots will be found in and protruding from the roots. 



The material thrown out by the burrowing of the 

 maggots into the roots is of a rusty or yellowish colour, 

 from which it gets the name of carrot ' rust '. 



Thorough winter preparation of the ground, thin 

 sowing of the seed, and early thinning are preventive 



Carrot Fly, Psila rosae (with Maggot and Chrysalis). 



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methods in so far that they encourage rapid, strong, 

 healthy growth. 



Add gas-lime to the soil in winter at the rate of 14 to 

 21 lb. per pole of ground. Allow it to lie on the top 

 after ridging, rough digging, or trenching, at least six 

 weeks before mixing it with the soil. 



Use wood ashes with the seed at sowing time. Dress- 

 ings of soot after thinning the plants will prove effective 

 in reducing the damage which would be caused by the fly. 



Celery and Parsnip Fly. This fly punctures the young 

 tender leaves of the plants and lays between the two 

 skins eggs from which larvae or maggots appear. 



In some seasons the leaves are tunnelled with these 

 so-called * miner ' maggots. 



