SOUTHER IT FIELD- CHOP I IT SECTS 
BOLL TEE7IL ( Anthonomus grandis Boh.^ 
GENERAL B ft R, Coad (March 17) i The regular annual examinations which 
STATEMENT have been made by the Delta Laboratory for the past ten years 
to determine prospects of the Doll weevil emergence in the 
spring have j-aut been completed,, In making these records each 
year the same fifteen selected points in northern Louisiana 
have been used lo represent the different types of hibernation 
conditions found in that district* A total of over UOOO 
pounds of Spanish moss was collected from these points and 
examined carefully for live and dead weevils. Prom these 
records the ratio of both live and dead weevils per ton of 
moss is computed, in order to get a comparative numerical 
expression, and past experience has shown that this gives. ■ 
a fair index to the spring emergence which may be expected. 
The records for the past t-sn years are given in the 
fcill owing -cable: 
Live weevils 
Year per ton of moss 
1915 J0 
1916 2U.0 
1917 8.0 
I91S 1.7 
1919 *J.O 
1920 8.5 
19?-1 22.6 
1922 • 127.0 
1923 19.0 
192U 0.5 
It will be noted from the above tabulation that the number 
of live weevils in the moss this year is exceedingly low, 
thus indicating a probable low emergence from hibernation 
in the coming spring. However, it should also be remembered 
that these figures represent only an approximation of conditions 
and have only a comparative value in a very general way. Por 
example, the record is somewhat lower than that indicated for 
1912, but the opposite ^ould be indicated by the temperature 
records, since in the winter of -1917-1918 the absolute minimum 
at Tallulah was 1 (one) above zero, while in the 1923-19-4 
it was 10 (ten) above zero. The weevils in hibernation in 
the fall of each of those years seem to have been some^ha.t 
similar, and it is quite probable that as far as the Tallulah 
neighborhood is concerned the emergence will be much the same, 
Pield observations during the summer of 1913 showed a sufficient 
emergence of weevils in the spring to cause serious damage 
to the cotton crop, and the low injury of that year was more 
due to the drought of the summer than to the low emergence of 
weevils. 
-22- 
Dead vreev 
ils 
per ton 
of 
moss 
4i.U. 

136. 
.0 
Ikk, 
,0 
ks. 
9 
53< 
,0 
15 = 
8 
■26, 

. 2 C 
2 
42. 

• 63. 
.U 
