“573- 
Mo th-trap. records indicate that the abundance of P. sent a/ in the Florida- 
Georgia. tobacco districts was about normal# Relatively heavy oviposition during 
the period May 23 to Juno 22 was undoubtedly due to individuals of both the 
spring brood and the first brood* Sun- grown tobacco was injured rather soverel: 
in numerous instances, whereas the shade-grown crop sustained only minor losses. 
(F, S. Chamberlin, Bureau of Entomology and Plant Quarantine, U. S. D. A.) 
CORN ROOT WE3W0HM 
The corn root web worm ( Cr ambus caliginosellus Clem.), known locally as the 
tobacco crambid, was present in more than the usual number of fields around 
Clarksville, Tenn. , but the infestation was unusually light. Only one report o 
severe damage was received in the entire season. In the areas where this insec 
is usually very abundant, the 1940 infestation in fields of newly planted tobac 
was not sufficient to cause losses exceeding 3 percent. It is believed that tl' 
unusually low temperatures of the preceding winter caused the reduction. (L. B. 
Scott, Bureau of Entomology and Plant -{Quarantine, U. S, D. A.) 
TOBACCO BUD WORM 
Infestations of tlio tobacco budworm were notably heavier in the Florida.— 
Georgia tobacco district than usual throughout the t ob a,c co -growing season. The 
insects caused some injury in sun-grown tobacco fields and to the upner leaves 
in shade-grown crops. (F. S, Chamberlin, Bureau of Entomology and Plant Quarer 
tine, U. S. D. A.) 
TOBACCO ELEA BEETLE 
At Oxford, N. C., in an open grassy field, there was a beetle survival of 
Epitrix parvula F, in small cages of from 23*75 to 35 percent and in larger cag 
of from 15 to 22.83 percent. The average emergence for all cages was 23.25 per 
cent, which is practically the same as in former comparable studies. During 
April about 150 plant beds were examined over most of the North Carolina flue- 
cured tobacco-growing areas. Usually 10 4 -squr.re-foot samples were taken from 
each bed. The average beetle infestation per square foot ranged from 2.83 i n 
tlie Border Belt to 5*44 in the Old Belt. These figures were only slightly lose 
than those similarly obtained for 1939 * but about two-fifths of the infestatior 
encountered in 1938# Tire 1940 maximum infestations in the Middle and Old Belt? 
were 21 beetles per square foot of plant-bed area# No records of a State-wide 
scope were taken during the spring of 1940 of infestations upon newly set toba.r 
however, weekly records taken at Oxford, N. C., on a 1-acre field of untreated 
tobacco showed infestations. of not over 5 beetles per plant from May 22 to Junr 
28. In July infestations ranged from 9.97 to 26.97 beetles per plant. Harves- 
was begun late in July. A nearby field being protected by rotenone dust had 0 : 
July 25 a maximum infestation of 30*49 beetles per plant. It is true that an 
infestation of 25 to 30 beetles per plant might cause severe damage to wrapper 
tobacco, but from 100 to 500 beetles would be needed to seriously injure the 
flue-cured tobacco plants. Su.ch infestations normally occur in North Carolina 
la.te in the season in occasional fields; however, none were observed in 1940. 
Co.ge studies at Florence, S. C., for the 1939-40 season showed that emer- 
gence of tobacco flea, beetle began at least as early as February 19 and c antin' 
library 
STATE PLANT BOARD 
