^5(5 m:\v jerspjy agricultural college 



iterials as avIich iiurreated. The story was repeated on the turnii>, 

 I'atlish and eabbaii'o jiatehcs, and apparently all the applications 

 ■were eoin]ilete failures. The preventives, however, were applied 

 too late, heeaiise the liies were already seen April 23d and the first 

 ;ij)plieari(ni was not made until ^lay Sth. So the carbolic acid 

 •emulsion was not used at sufficient strength, nor until the insects 

 ■^vere so mcII grown that many of them were protected by the con- 

 tracting skin or in the plant tissue. 



Ji(uic 12th, another visit was made and a very careful investi- 

 -gation was made of the onion-growing practice and how the mag- 

 :got affects it. It was found that the latest a]>plications of the 

 ^^arbolic acid emulsion made at the proper strength had been 

 •effective in killing the insects, though too late for much practical 

 result, and most of the insects were then in the pupal stage or 

 ^already changed to adults. 



^h'. Seabrook has been one of the heaviest, if not the heaviest, 

 •sufferer from maggot attack in the State, the actual money loss 

 iov the season being not less than $1,000. Large areas of radishes 

 Avere plowed np before even a small percentage of the crop had 

 'ibeen marketed, a field of turnips was totally lost, cabbages were 

 in nearly as bad condition and the onion crop had been seriously 

 -diminished in value. His experience has been unfortunate for 

 •several years past, yet it has also given a clew to what may prove 

 to be a practical method of, control, as will be developed later. 



Matawan Experiments. 



April '27th, ]\[r. Dickerson visited Mr. Stemler to arrange with 

 'Mm concerning the experiments to be made against the onion 

 ■maggots. Several rows had been sown that were not yet up, and 

 •on the plants up from seed sown in cold frames no signs of the 

 :flies conld be found. Mr. Stemler agreed to try most of the ex- 

 .periments and some of his own in addition, so it was left to him 

 vto arrange as he chose. 



May Idth the place was again visited; the plants from seed and 

 <?old frames were all in good condition, but adults were observed 

 on the plants and on the wing. ISTo maggots Avere found on search 

 -<it this time, although !Mr. Stemler said he had found one in a 

 plant earlier in the day. All the preventive materials had been 



