4f> ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE, 1953 
Several Insecticides Effective in Controlling Sugar>Bee1 Root Maggot 
T sts were conducted in 1 compare tl tive- 
1 of the 
- _ i were 
aldrin, dieldrin, and heptachlor. All tn 
tion with ethylei - in yield over tl 
i _ ar-beet seed with heptachlor at the rate of \ L . pound 
- per 
acre i . Aldrin. dieldrin, and heptachlor, at the rate 
of 3 pounds per acre in a fertilizer mix, a broadc 
planting itment, gave increased \ er the checks of 
l.'.'T. and 1.08 toi W en dieldrin and hep- 
tachlor were mixed with a fertilizer and applied at the rate of 1 pound 
per acre in the furrow at planting time, there were increased per 
yields of 1.62 an* ctively, over the check. 
Experiments Concluded on Effects of Insecticide* on Tobacco 
Rotations 
Dieldrin was added in 1952 to the series of experiments init: 
at Florence. S. C, in 1047 to determine the efl 
DDT, BHC. and toxaphene in the soil on tobacco and crops usually 
rotated with it. These experiments have provided much useful in- 
formation regarding the fate of these materials in the soil, as well as 
their phytotoxic effect Furthei plications 
were discontinued at the end of the 1952 season. S - tples will 
be taken from the plots for the next two year- in order to obtain 
further information on the persistence of the ii 
penmen?- in cooperation with the South Carolina Agricultural 
eriment Station and the Bureau of Plant Industry, Soils, and 
Agricultural Emgineering. 
Residual Effects of Insecticides on Subsequent Tobacco Grope 
Studied 
Effects of vari< [uent ci> gi own 
in th< in a ne\ \ experi- 
ments initial- ration with the South 
l Agricultural Experimi ion and the Bureau of Plant 
Indt I Agricultural 1 ring. Cott< 
es of plots \\ ill I ides thai are now 
recommended for thi 
for use on that . Materials to be included in t 1 sts are 
isodrin, endrin, methyl parathi< phene, BHC, aldrin. 
dieldrin. hep , chlordane, and EPN. These Lin - will 
be app ied a< du I - in appi £es that i i 
ally be applied to o will be 
n 195 I. Follow ing harvest, t he 
will be cured and samples supplied to lea _ anufacturers 
aeterminat ions, and 1 1 chemists 
or ii tnufacl u 
• - \\ ill uof 1).' available until \ 
