-4- 



attach themselves by embedding their mouth-parts into the skin. When entering wooded 

 areas or ones suspected of being tick- infested, use a repellent on socks, pants, pantl 

 cuffs, and exposed parts of the body to prevent tick bites. DEET (diethyltoluamide) 

 is one of the best tick repellents. To control ticks in the home yard as well as in ! 

 parks or playground areas, spray the grass, shrubs, and flowers with diazinon, mala- 

 thion, or carbaryl (Sevin) . Do not apply diazinon to ferns or hibiscus, malathion to 

 Cannaert red cedar, or carbaryl to Boston ivy. 



THALLIUM SULFATE BAITS PROHIBITED FOR HOME USE 



Thallium sulfate, a highly toxic pesticide formerly approved for household control 

 of roaches, ants, and rodents, is still being found in the marketplace more than seve 

 years after the federal government warned of its dangers and acted to stop interstate 

 sale for private home use. In recent years, a number of children have reportedly bee 

 made ill by swallowing the compound. 



The Environmental Protection Agency is requesting all retail outlets to voluntarily 

 remove any supplies of thallium sulfate products they may still have on their shelves 

 The EPA regional office in Chicago should be notified so that arrangements can be 

 made to pick up the material. 



If a dealer continues to sell such products, he may be subject to civil and criminal 

 penalties under the provisions of the new federal pesticides law. Continued use of 

 these products is also unlawful. 



WEEDS 



WEED-CONTROL ALTERNATIVES 



The reduction of tillage caused by the late, wet spring may result in seedbeds that 

 are rough and trashy. This can influence the degree of weed control with the pre- 

 emergence herbicides because of poor distribution. Incorporating preplant herbicides 

 may be more difficult also, especially with more volatile herbicides such as Sutan. 



Considerable acreages may be planted without preplant tillage, but weeds that have 

 already emerged must be controlled. If you are planning to use zero-tillage all the 

 way, then you will be completely dependent on chemical weed control. Herbicides do 

 fail sometimes. 



Remember that herbicides are not the answer to all weed problems and that zero-tillag 

 should not be used on land where there is a heavy growth of j ohnsongrass , yellow nut- 

 sedge, or quackgrass. A well-planned program of weed control should allow the option 

 of timely rotary hoeing and row cultivation. The threatened fuel shortage and the 

 time limitations of the rushed season may limit their use, but timely cultivation 

 can greatly improve marginal herbicide performance. 



There are several alternate times for applying corn and soybean herbicides. We have 

 preplant, preemergence , and postemergence herbicide choices, with which most weed 

 problems in corn can be adequately controlled. In soybeans, however, the postemer- 

 gence alternatives are somewhat limited, especially for controlling grass weeds. The 

 preplant alternatives for soybeans are somewhat limited for controlling problem 

 broadleaf weed such as cocklebur, velvetleaf, jimsonweed, giant ragweed, and annual 

 morningglory. A choice of herbicide alternatives must always be based on the weed { 

 problem, the soil, and the available equipment, as well as on timing. 



