
= ees 
catch of moths rer acre for the season may be indicative of further 
usefulness when more effective preparations and improved traps are em 
ployed." 
strain of corn apparently tolerant to borer.--L. H. Patch, San- 
dusky, Ohio, reports that "one strain of corn, of the 24 strains tested 
in 1951, seemed particularly promising from the standpoint of the yield, 
the low borer survival upon it, the low rate of dropping off in yield 
of grain with increasing mean borer populations, the breakage of the 
Stalks in the presence of the corn borer, and freedom from emutted 
plants. This hybrid, cbtained by crossing two inbred strains, Hy and 
R4, gave the maximum yield of 104.8 bushels of grain per acre, compared 
to the mean of 79.3 bushels. The borer survival on it was 9.0 per cent, 
compared to the mean of 16.5 per cent and the minimum of 8.8 per cent. 
The rate of decrease of its yield with increasing mean borer popula 
tions was the minimum for the 24 strains, being 1.51 bushels per acre 
per borer per plant, compared to the mean of 2.08 bushels." 

Kansas fly-resistant wheat susceptible in Indiana.~-W. B. Noble, 
West Lafayette, Ind., reports that "The third of a triplicate series of 
tests of R. H. Painter's Kansas resistant varieties of wheat were com 
pleted. * * * None of these varieties showed resistance to Indiana 
flies, although some continued to show more tendency to recover by til-— 
lering that otkers." 
Host plants of Illinoia pisi Kalt. in QOregon.--L. P. Rockwood, 
Forest Grove, Oreg., reports that "Observations of aphids on plots of 
vetch and oats and Austrian field peas (seeded alone), that were seeded 
On September 21, October 35, October 15, and November 21, 1931, were made 
on March 8 and on April 1, 1932. * * * These observations and those of 
last fall indicate that Illinoia pisi established itself last fall on 
vetch and peas that were seeded as late as October 15, although earlier 
sown piots showed a much higher infestation in November and April." 
COTTON INSECTS 
Effect of storage conditions on pink bollworm.—-S. L. Calhoun 
and L. C. Fife, Presidio, Tex., report an exceriment inaugurated Octcber 
17, 1931, "to determine the best methed of winter storage of larvae of 
Pectinophora gossypiella Saund. collected from gin trash and to determine 
whether the place of storage or the type of hibernating medium, or both, 
had any effect upon survival." The experiment was completed on March 15. 
Results show that "(1) The place of storage had very little effect upon 
the survival of larvae collected from gin trash; (2) an increased sur-— 
vival of 2.39 rer cent was recorded for larvae hibernating in corrugated 
pasteboard strips over those hibernating in gin trash; (35) a survival 
of 80.19 rer cent was recorded for those larvae hibernating under nor- 
mal conditions and which were obtained from the biological exreriments; 
(4) the high mortality occurring in larvae collected from the gin trash 

