50 INJURIOUS INSECTS OF I909 AND IQIO. 
Plot 2 was treated with carbolic acid and lime on June 8th, the 
same date that Plot 1 was treated. The formula given in New 
Jersey Bulletin No. 200 was followed. This treatment was applied 
several times more on the following dates: June 15th, June roth, 
June 25th, July 3d, July 23d; the last two applications being made 
after a part of the radishes had been pulled and examined. 
Plot 3 was treated with sulphur on June ath. The tallest of 
the plants were at this time between 1 and 1% inches high. The 
sulphur was sprinkled very thickly along the rows, so as to com- 
pletely surround the bases of all the plants. It took 4534 pounds 
of sulphur to treat this plot. Of course, the expense of such treat- 
ment would be out of the question for radishes, but it was hoped 
by this application evidence might be obtained as to the value of 
sulphur as a preventive of cabbage-maggot attacks on cauliflowers, 
where a smaller amount of sulphur would be required for the 
returns expected. 
Plot 5, on June 8th, was treated with an emulsion of carbolic 
acid and ivory soap. This, it will be noticed, was the date of the 
first treatment of plots 1 and 2. The carbolic acid emulsion was 
made up according to the formula given in N. J. Bulletin 200. 
This plot was treated again on June 12th, a third time on June 19th, 
a fourth time on June 24th, again on July 3d and July 23d—the 
last two times after the first radishes had been pulled and examined. 
The roots were pulled and examined in these plots as we got time 
for the work, as nearly as possible when they were large enough 
for table use in numbers, the dates being June 3oth, July 17th and 
August 2d. The sum total of the counts made on these dates was 
as follows: 
1 2d CO) Fact ee eae ho er 219 marked, 686 entirely free. 
Plotecei sce heer 138 marked, 1,132 entirely free. 
JEG) Pataroms aed oi 6 ote 557 marked, 597 entirely free. 
POG TA esas ae 75 marked, 842 entirely free. 
PlOGMOE eee 101 marked, 1,122 entirely free. 
It will be seen that these results are somewhat questionable as 
far as the maggot is concerned, (see check row No. 4) due, possibly, 
to the fact that the maggots were not very active during the period 
when the radishes were in the ground. 
Four plots of radishes, planted on June 4th, each containing 10 
rows 9 feet long, were all contiguous with one another; plots I 
and 3 being check plots, and 2 and 4 being treated plots. 
