3. Supplement good sanitation and barn sprays with a spray bait material . Use 2 to 

 4 ounces of dichlorvos (DDVP) or naled (Dibrom) in a mixture of 1 gallon of clear 

 corn syrup and 1/2 gallon of warm water. Apply this from a small tank sprayer to 

 the favorite fly-roosting areas . 



i 

 Barn foggers using insecticides like dichlorvos (DDVP) , pyrethrum, or naled 

 (Dibrom) give a quick kill of flies during the fogging operation (5 to 10 min- 

 utes) , but the effect is not lasting. When fly populations become intense, even 

 twice a day fogging fails to provide satisfactory fly control for the farm- -even 

 though the barn is kept temporarily free of flies. As normally used, fogging 

 does not leave enough insecticide deposit on the animals to protect the cattle 

 from flies when on pasture. Coarse sprays applied to the animals are best for 

 this purpose. 



HOMEOWNER PROBLEMS 



Many tree leaf samples that are infested with galls have been sent in or observed. 

 Some of the more-common ones include maple bladder on maple, various galls on oak, 

 and pod gall on honey locust. These are warty -appearing growths that develop on the 

 leaves. They rarely cause any damage to branches of the tree. Chemical control is 

 difficult, since the tiny insect forming the gall is inside it. If treatment is 

 desired, it will be most effective just before the gall is formed; in most instances, 

 this is in the spring as the new leaves are emerging from buds. Hence, this should 

 be planned for next spring. 



Lecanium scale is appearing on oak trees as well, as on some yews and arbor-vitae 

 shrubs . These dark brown or red, bead- like scales are found along the branches at 

 the base of the leaves. Eggs usually hatch under these scales during late June, with 

 the crawlers moving onto new growth. If such scales are present and are causing 

 damage, spray now with malathion to control the young crawlers. 



A species of spittlebug is feeding on juniper shrubs. These appear as small frothy 

 masses of spittle on the needles; the insect is inside the frothy mass. These insects 

 can be controlled with methoxychlor, carbaryl (Sevin) , or malathion. Do not use 

 malathion on cannaert red cedar. 



ATRAZINE AND OIL 



WEEDS 



It is now too late for postemergence treatments with atrazine and oil. Most weeds 

 are too large, and late applications increase the chance of residue problems next 

 year- -especially if the weather turns dry. 



Preemergence or postemergence treatments with atrazine have helped to control smart- 

 weeds in many areas. Where smartweeds are still a problem, Banvel can help; but 

 extreme precautions are needed in order to avoid injury to nearby soybeans and other 

 desirable plants. If the Banvel moves into soybeans, it can cause considerable 

 damage to the plants. The signs of damage are cupped and crinkled leaves; also, the 

 leaf buds not opening normally. Yield reductions may result, especially if Banvel 

 gets on the soybeans near the bloom stage. 



2,4-DB may be used as a postemergence treatment on soybeans 7 to 10 days before bloom 

 to mid-bloom, when soybeans are about knee-high. This can be helpful in controlling 

 cocklebur, annual morningglory, and giant ragweed. But 2,4-DB can cause some wilting 



