THE CABBAGE MAGGOT. 11 



ference could be noted between treated and check (untreated) 

 rows. 



On Cabbage: a. Plants set May 6th. Applications (i to 

 30) May 15th; second, May 19th; third, May 26th; fourth, 

 June 4th. On July 7th the foHowing results were noted; 

 1st row 107 heads out of 150 plants treated; 2nd row 105 

 heads out of 150 plants treated; 3rd row iii heads out of 150 

 plants treated. But in the check rows we observed the fol- 

 lowing: 1st row, 130 heads out of 150 plants; 2nd row, 

 [17 heads out of 150 plants; 3rd row, 130 heads out of 150 

 plants. In other words the check rows made a better showing 

 than the treated plants. These observations were based 

 entirely upon the heading and is not to be regarded as a 

 good test, for the plants were located in a breezy field where 

 the maggots were not at all bad, and almost all the plants 

 made a favorable growth, but did not show up very well in 

 heads. The comparatively poor showing of the treated plants 

 may or may not have indicated that the solution used had an 

 unfavorable effect on the plants. 



b. First application on plants set May 9, May 23rd ; 

 second. May 28th; third, June 5th. Examined June 7th; 2 

 plants out of II wilting. Checks: 6 out of 23 wilting. 



Carbolic Emulsion, double strength (i part emulsion, 15 

 parts water). 



On Cauliflower: a. Earth hollowed (2 inches) about 

 base of plants to hold emulsion. 



Plat No. I : Applications May 30, June 15. Poor re- 

 sults. 



Plat No. 2: Three applications; first May 19 and last 

 June 15. Results: A somewhat better showing for treated 

 plants. 



b. Earth not hollowed : 



Plat No. I : Applications May 3rd and June 5th (but 

 hollows made around plants at second application because it 

 was found that maggots were present). Examined June 7. 

 No maggots. Evidently either driven away or killed by the 

 solution. 



Plat No. 2: Three applications, the first May 19, third 

 June 15. On July 6th no appreciable difference between 

 treated and untreated plants. 



Plat No. 3 : Applications June 2nd and June 5th (earth 

 close to plant hollowed at time of second treatment). On 



