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(^NEW JERSEY 



Agricultural Experiment StationsJ 



bulletin/200 



FEBRUARY 12, 1907. 



The Cabbage and Onion Maggots. 



BY 



John B. Smith^ Entomologist, and 

 Edgar L. Dickerson^ Assistant. 



Each year, in various parts of the State, cabbages, cauliflowers 

 and other varieties of cruciferous j^lants, as well as onions, are 

 damaged to a gTeater or less extent by maggots feeding on the 

 roots, and therefore known as root-maggots. The injury may not 

 be equally severe two successive years in a given locality, or even 

 in various parts of the same district in any one season, or there 

 may be a series of bad seasons. During the past few years, how- 

 ever, the injury has been serious in many secticnis of our State, 

 the loss on one farm alone in Cumberland county amounting, in 

 1906, to $1,000 or over, while in many other places from one- 

 third to one-half of the crop was destroyed. 



Numerous experiments against these pests have been made from 

 time to time in Kew Jersey and elsewhere, and many remedies 

 have been suggested, several of which have Ijecn used with more- 

 or less success ; but quite usually remedies that have been appar- 

 ently successful in one place or in one hand have failed elsewhere- 

 or when used by another. To test some of these mater ials more- 



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