-5- 



Maple bladder galls can be found on the upper sides of the leaves on some soft maple 

 trees . These show up as green or reddish growths. Mites overwintering on the bark 

 of trees stimulate the formation of the galls, in which many mites live and feed. 

 These galls rarely cause damage. It is too late to control this insect in 1969. 

 Next spring, spraying with malathion after the buds are swollen but before new leaves 

 appear will control this pest. 



Oystershell scale hatch is underway in the central and southern parts of Illinois. 

 The new crawlers are getting ready to begin feeding on lilac, birch, dogwood, ash, 

 peonies, and many other shade trees and shrubs. In the northern sections, it will 

 be about 2 weeks (June 15) before hatch is complete. For control, use a spray of 

 malathion (2 teaspoons of 50- to 57-percent concentrate per gallon of water), and 

 treat the infested area thoroughly. An additional treatment may be needed in mid- 

 August for the second-generation crawlers. Even though scales are killed by spraying, 

 the covering will persist for several months. 



Forest tent caterpillars are pale blue worms with a white keyhole marking on each 

 segment down the back. These worms make no tent or extensive webbing, but they can 

 quickly defoliate trees. Carbaryl (at 2 pounds of 50-percent wettable powder per 

 100 gallons of water) will give control. 



The brown recluse spider was found for the first time in Franklin County this week. 



WHEAT DISEASES 



Glume blotch is beginning to appear on wheat heads. On the Ben Hur variety, glume 

 discoloration occurs naturally and should not be confused with glume blotch. 



Loose smut is also present in wheat, as is head blight or scab. 



SPECIAL ANNOUNCEMEFTTg 

 Pesticide Dealers and Applicators Field Days/1: 30 p.m. each day: 



June 9, Office of the Jasper County Extension Adviser, Larry Casey, Newton. 



June 10, Office of the St. Clair County Extension Adviser, Mike Hardimon, Belleville. 



June 10, Office of the Marion County Extension Adviser, Les Rogers, Salem. 



June 11, Office of the Macoupin County Extension Adviser, William McAllister, Carlinville, 



June 11, Office of the Moultrie County Extension Adviser, Roger Wenberg, Sullivan. 



June 17, Office of the Brown County Extension Adviser, Robert Hayward, Mt. Sterling. 



June 17, Office of the Henderson County Extension Adviser, Curt Eisenmayer, Stronghurst. 



June 18, Office of the Knox County Extension Adviser, Don Teel, Galesburg. 



*June 18, Office of the Livingston County Extension Adviser, Paul T. Wilson, Pontiac. 



*June 19, Office of the McLean County Extension Adviser, Gene Mosbacher, Bloomington. 



June 19, Office of the Iroquois County Extension Adviser, Ken Imig, Watseka. 



*NOTE : THE DATES OF THE LIVINGSTON AND MCLEAN COUNTY MEETINGS HAVE BEEN CHANGED FROM 

 PREVIOUS ANNOUNCEMENTS. 



