to the upper third of the plant. Aerial applications should be granules, not 

 sprays or dusts. Allow 10 days between treatment and ensiling of corn when ap- 

 plying diazinon; carbaryl has no waiting period. Recent label approval has been 

 granted for use of 7 1/2 to 10 pounds of 20 -percent carbaryl granules per acre. 

 Our tests some years ago were with 5 -percent granules, but we would anticipate 

 similar control results. 



Soybean Insects 



Variegated cutworms have been found damaging soybeans. This almost black to gray 

 worm has a series of yellow or white diamond spots down its back. It feeds at 

 night and hides in the soil during the day. Carbaryl (Sevin) as a spray at 1 

 pound per acre should give practical control. 



Small Grain Insects 



Cereal leaf beetles have been tentatively identified (not yet officially confirmed) 

 this year from Cook, Champaign, Edgar, Kankakee, Grundy, Shelby, Livingston, 

 Vermilion, and Will counties. They have not been found in Woodford and Iroquois 

 counties this year but were found in these two counties in previous years. This 

 foreign insect is a pest of oats and spring wheat and has been a problem in 

 northern Indiana and northern Michigan for the past few years . 



Honey bees 



Under some circumstances, use of insecticides on foliage can kill large numbers of 

 bees needed for pollination of many crops. This represents a loss to the farmer 

 who was using the insecticide to kill noxious insects. Bee kills also work a 

 financial hardship on the beekeeper. However, beekeepers and farmers can both 

 benefit by cooperation when insecticides are to be used. 



Insecticide use can very well be of benefit to bees. Insecticides kill insect 

 pests and allow more plants to grow and bloom, thus increasing pollen and nectar 

 supply for the bees. 



Selection of insecticide and formulation may greatly reduce or eliminate bee losses. 

 Some insecticides are quite toxic to bees, others moderately so, and others only 

 mildly toxic. Some are persistent, others are not. A toxic insecticide applied 

 as a granule may have little effect on bees frequenting the field, while a spray 

 or a dust of the same insecticide may be quite toxic. Both beekeepers and appli- 

 cators should know the properties of the insecticide and the formulation to be 

 used. Farmers should notify beekeepers prior to use of insecticides, giving 

 enough notification that the beekeeper can handle his bees properly. 



The beekeeper should know the agricultural practices in the neighborhood of his 

 bee hives. At critical times of insecticide use, he may be able to cover the 

 hives or under some circumstances move them temporarily to another location. Bee- 

 keepers can help by posting their name and address on bee yards. They can also 

 supply the county Extension adviser with a list of beekeepers in the area and 

 locations of hives. 



With a little care bee losses in Illinois can be of minor importance. For further 

 information, ask your county Extension adviser for a copy of University of Illinois 

 Circular 940, "Pesticides and Honey Bees." 



