Allow 15 days to elapse between the application of methyl parathion and harvest; 

 16 days for azinphosmethyl ; and 7 days with methoxychlor, diazinon, or mixtures of 

 them. No interval is required between the application of malathion and harvest. 



We are continually questioned about the most effective material. Methyl parathion, 

 put on by commercial applicators who wear protective clothing, usually provides the 

 best control under all conditions. Furthermore, the total cost of chemical and 

 application may not be any greater than the chemical cost plus labor for the mate- 

 rials used by the individual applicator. Regardless of what material is applied 

 or how, timing is critical. An application made too early may be wasted, but an 

 application that is too late usually means a crop loss. Apply when 25 percent of 

 the terminal growth shows feeding damage. 



The quantity of finished spray applied per acre is also important. Use no less 

 than 4 gallons per acre by air or 20 gallons per acre by ground machine. The ex- 

 ception is on stubble, where 10 gallons per acre by ground will be sufficient. 



Clover leaf weevils can be confused with alfalfa weevils. This large, pale-green 

 worm with white stripes down its back has a tan or brown head; the alfalfa weevil 

 has a black head. There have been reports of this insect in clover and alfalfa 

 fields in the western part of the state. They feed mainly at night, and hide 

 around the base of the plant during the day. Most stands of alfalfa and clover 

 outgrow the damage from this insect; also, parasites and a fungus disease usually 

 prevent a buildup of this pest. However, if feeding is severe and growth is slow, 

 a spray of 1 pound of malathion will be effective. Pea aphids, if present, will 

 also be controlled by the malathion. 



Fungus gnats are numerous in some wheat fields. These small gnat- like flies (some- 

 times mistaken as Hessian fly), which develop in wet, decaying organic matter, are 

 not pests of the wheat plants. But they do manage to crawl through window screens 

 and become a nuisance in homes. Inside the home, a 0.1-percent pyrethrin space 

 spray applied from a pressurized can will give quick knockdown and relief. 



Clover mites are annoying in some homes. These mites are tiny, orange- to-black 

 moving specks about the size of the period at the end of this sentence. They cover 

 furniture, walls, curtains, window sills, etc., as they attempt to find their way 

 outdoors. Pick them up with a vacuum cleaner or use an 0.1-percent pyrethrin spray 

 from a pressurized spray can for quick knockdown. Before fall, remove grass, clover, 

 and weeds next to the foundation- -leaving a strip of soil at least 18 inches wide. 

 This bare soil serves as a barrier to the mites. Replanting this strip with flowers 

 such as zinnia, marigold, chrysanthemum, or salvia (which do not attract clover mites) 

 will prevent clover mite problems next year. 



Winged termites and ants are appearing and are causing concern to homeowners. If 



warms of flying termites appear, check for mud tubes on inside basement walls and 

 on the outside of foundations. Many termite control problems are extremely com- 

 plicated and require an experienced exterminator. 



