

- 14 ~ 
@ big start over its native ne Fare : 
mumber of localities, LN aa Sovak i one saan beirages RIES 
also the fungus Empusa aphidus Hoff," ing 1t in check in some places, as is 
Mr, Creel also has under ws ~e F 
_ tion with the extension Pees eee ee ee en campaign in coopera- 
control of the clover flower midge in the Se Agricultural College for 
BMG idéerable reduction in the red eae oe jee nt There is apparent- 
with last, due probably to summer leaner Ae tee season, as compared 
It is hoped that this campaign may tend re pete eaten plants last season, 
persuading the farmers who have hitherto a Se this reduction in acreage by 
their last crop for seed, Hebe PO Ce Ope et) Nee 
Mr. John J, Davi i 2 : ; 
the past month, At present there is ¢ pale ase: Le Oe 
abundant as they are to be found every indication that cutworms will be 
Be econcin and caste = commonly behind the plow in northern Illinois, 
, ceportcd, At cere ee dae ba of cutworm injury in gardens 
above and none has sprouted above ne eno hae ages See eee 
Mr . . » : ; & ) 
I iccte a wrorclonce at eeee tee beings ae in abundance 
As has been previously oa ae iva ie sant pa pee. 
ago but they occur in injurious numbe s om % — eee ai poe gees 
MMM come locdlities they are ae ek een: of the white grub 
Mei? This may be due to Sie, ae es y ore abundant than in the fall 
ees until late mae Rae haier ~ A Seis ago the beetles did not 
een oe ane pale! number of very small and immature 
se cumbed aie oe s with less vitality and strength no 
es ccially is a enn eee more easily than in a normal season 
Bike had en Rie ie 6 that the ce freeze last eas before the 
MM iety thet the eae tag eats quarters was detrimental to. them, 21-25 
g weather during the past winter would have been any 
more destructive to grubs than in normal years had there not been the contrib- 
uting factors mentioned above, The less general abundance of grubs this year 
in comparison to three years ago is partly due to the fact that the May 
beetles did not appear until late last season and the continued cool weather 
prevented them from ovipositing freely. Similarly it appears +hat the cool 
weather prevented the beetles from migrating as great distances from their hosts 
(trees) as in former years, The majority of grubs did not come noar the surface 
until the past six or seven days because the soil has been cold up to this time 
and as a result farmers have not noticed grubs and many will plant corn on sod 
ground believing the grubs are not present when as a matter of fact many of 
these fields are infested but the grubs were below the plow line when the 
ground was plowed, 
The effect of the cold winter was illustrated in an interesting way in the 
case of the joint-worm, At Shelbyville, Indiana, practically the center of the 
1917 joint-worm area in Indiana, we found practically all larvae killed in the 
upstanding stubble, but in the stubble lying on or near the ground and most of 
that lightly covered with soil as a result of fall plowing, many live larvae 
were found and here there appeared to be only the usual mortality, Stubble 
lying on the ground was protected by snow during the period of coldest weather, 
The season this year has been late but warm weather the past week has 
greatly improved conditions and we may expect insect problems to become 
evident within the next week or two." 
