carbaryl (Sevin) or 1 1/2 pounds of toxaphene per acre as a band over the 

 Carbaryl would be the preferred material for use on dairy farms. 



row. 



Black cutworms have been reported damaging com this week. The cool, wet weather 

 is ideal for cutworm survival. Watch for cut plants in the low or poorly drained 

 spots for the next several weeds. Applications of 3 pounds of toxaphene, 2 pounds 

 of carbaryl (Sevin) , 2 pounds of diazinon (granules are best) , or 1 pound of tri- 

 chlorfon (Dylox) per acre- -directed as a spray at the base of the plants- -will 

 control the small worms. Worms that are one to two indies long are more difficult 

 to control. For best results, use at least 20 gallons of water per acre and culti- 

 vate immediately to cover the spray deposit. Follow the precautions and restric- 

 tions on the label of the insecticide you use. Let's get the cutworms early this 

 year. 



Preplanting broadcast applications of 1 1/2 pounds of actual aldrin or heptachlor 

 (do not use on dairy farms) per acre is the best insurance against a cutworm prob- 

 lem. Row treatments at planting time with these same insecticides provide erratic 

 results against cutworms. 



Corn borer pupation is nearly complete in the southern tip of the state this week; 

 moth emergence has begun and will progress rapidly during the next two to three 

 weeks. Our best guess is that peak egg laying and hatch will occur late this month 

 or in early June. At that time, observe early, rapidly growing cornfields for 

 borer infestations. 



The area of the state expected to be most seriously affected by first -generation 

 corn borers lies west of a line from Savana to Pontiac to Petersburg to Chester, 

 Illinois. 



Pupation of overwintering borers is just beginning in the central and western sec- 

 tions this week. Moth emergence should start by June 3 to 7 in this area, with 

 peak egg laying and hatch between June 15 and 30. There are a few early-planted 

 fields in this area that may bear the brunt of the egg laying; borer survival in 

 these fields will be high. 



Homeowner Insect Problems 



Bean leaf beetles are damaging newly emerging garden beans. These beetles are 

 green, yellow, tan, or red insects with a distinct black band around the edge of 

 the wing covers. They usually have black spots on their back, but not always. 

 They feed on the undersides of the leaves, eating irregular holes. Sometimes 

 plants are completely defoliated in just a few days. These adults will continue 

 to feed for several weeks. 



Carbaryl (Sevin), as a spray or ready-prepared dust, is effective. For sprays, 

 use 2 tablespoons of the 50-percent wettable powder per gallon of water. Repeat 

 treatments may be needed if more beetles appear. Spray both the upper and lower 

 sides of the leaves for best results. Treatments can be applied up to the day of 

 harvest if needed. 



European pine shoot moth larvae and pupae ai~e in the tips of some mugho, scotch, 

 and red pine. The infested tips are beginning to turn brown; they usually curl 

 and will eventually die. No insecticide control is effective at this time. For 

 small trees in home yards, break off the damaged tips and destroy them. 



