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HORTICULTURE 



LECT. V 



the flies are hovering about the crops. These applications prevent 

 the deposition of eggs and also act as manures. If the ground 

 among onions is covered with brewers' hops or lawn mowings, the 

 small maggots cannot travel through them to the plants. Early 

 horn carrot seed sown early in July produces clean roots because 

 the hatching period of the maggots has passed. For the same 



FIG. 19. CELERY FLY (TEPHRITIS) AND MAGGOTS (ENLARGED) EATING OUT 



THE TISSUE OF THE LEAF. 



reason autumn sown onions are usually free from maggots, while 

 spring sown crops may be ruined by them. 



9. SLUGS AND SNAILS. Remedies: 1. Lime water. Pour 

 water at the rate of 3 gallons to a pound of lime in lumps, as 

 fresh from the kiln as possible, stir, then let stand and use the 

 clear lime water through the perforated nozzle of a can, as if 



