ripider mite damage to Junipers has been reported. At first, the damaged foliage appears 

 ;o be finely mottled--then grayish, dry, and brown. To detect mites, strike a few 

 tranches of the plant sharply with one hand while holding a white dish or piece of 

 :aper under the branches with the other. If mites are present, they can be seen running 

 ibout on the paper or dish when it is held in bright light. Apply dicofol (Kelthane 

 L8. 5-percent emulsifiable) at 2 teaspoonsful per gallon of water. Spray to runoff. 



3yster shell scale young will soon begin hatching and crawling out from under the old 

 scales on shrubs like lilac. These crawlers will feed on new growth by sucking the 

 Dlant sap. Make two applications of malathion, 10 to 14 days apart, beginning about 

 4ay 10 in southern Illinois, May 15 in the central section, and May 25 in the northern 

 Dortion of the state. 



]rape flea beetles are feeding on the new foliage of grapes in many home gardens . Sprays 

 Dr dusts containing carbaryl (Sevin) will control these tiny, greenish-blue beetles that 

 jump when disturbed. 



WEEDS 

 USE OF HERBICIDES IN GREENHOUSES 



Do not use a volatile herbicide inside greenhouses . When used under field growing con- 

 ditions, most herbicides do not injure plants, because of volitalization from the soil 

 surface. Under greenhouse conditions, soil surfaces are kept moist, which increases 

 the volitalization of most herbicides, and the vapors are not swept away by air currents. 

 %ny herbicides not considered volatile under field conditions can cause damage when 

 contained in a greenhouse environment. The safest means of controlling weeds under 

 greenhouse conditions is to remove them by hand, mulching, or using weed burners. 



If damage is noted from volatile chemicals, the soil should be removed as soon as pos- 

 sible. (This is often not practical immediately.) Or, the soil should be drenched 

 with 0.5 gram of activated charcoal per 5 pounds of soil (or 1 pound of activated 

 charcoal per 1,000 pounds of soil). The activated charcoal may tie-up some soil nutri- 

 ents. If nutrient deficiencies are noted, foliar feeding should be employed. 



Volatile herbicides (particularly the phenoxy types--2, 4-D/2, 4, 5-T/etc . --should be 

 stored in structures completely separated from greenhouses and the like . A broken bag 

 or leaking can will often cause phenoxy injury to sensitive flower or vegetable crops 

 grown in close proximity to stored herbicides . 



HOME USE OF 2,4,5-T SUSPENDED 



The U.S. and Illinois Departments of Agriculture, Interior, and Health, Education, and 

 Welfare have suspended the use of liquid 2,4,5-T, around the home, on lakes, ponds, or 

 ditch banks. Cancellation for uses of nonliquid 2,4,5-T around the home and on all food 

 crops intended for human consumption is expected. 



These actions are based on the opinion that using 2,4,5-T around the home and in water 

 areas could constitute a hazard to human health. New information indicates that 2,4,5-T, 

 as well as its contaminant, dioxins, may produce abnormal development in unborn animals. 

 Nearly pure 2,4,5-T was reported to cause birth defects when injected experimental ly at 

 high doses into pregnant mice, but not in rats. No data on humans are available. 



