acre; (3) a mixture containing at least 1/2 pound of diazinon and 1 pound of 

 methoxychlor (Alfa-Tox) per acre; or (4) 1-1/4 pounds of malathion per acre on 

 days when air temperatures will be above 60°F. for several hours after applica- 

 tion. Do not harvest for 7 days after treatment with Imidan, methoxychlor, di- 

 azinon, or mixtures of them. There is no waiting period for malathion. Do not 

 apply Imidan more than once per cutting. 



The above materials can be used on dairy farms. 



Applications of methyl parathion and carbofuran (Furadan) made last November reduced 

 adult populations so that egg- laying has been low, and no spring applications are 

 needed. Untreated areas in these fields are being badly damaged. In the southern 

 half of Illinois , plan now to make an application this coming November to alfalfa in 

 order to control the adult weevils before they lay their eggs. 



CORN INSECTS 



Seed corn maggots and seed corn beetles are more damaging during periods of slow ger- 

 mination. Occasionally, slow germination can be caused by weak seed. Usually, how- 

 ever, slow germination will occur when seeds are planted in cold wet soil, particu- 

 larly if they are planted too deep. 



To avoid damage, use a diazinon seed treater. It is best to treat the seed in a sep- 

 arate container before putting it into the planter box. If you prefer, the seed can 

 be treated in the planter box. In either case, empty the boxes occasionally to see 

 that excess dust is not replacing seed and reducing seeding rates. 



Do not use the seed treatment if you use Dasanit, diazinon, Dyfonate, phorate, or pro- 

 phos as a band at planting. The effectiveness of BUX and carbofuran (Furadan) for 

 corn seed beetle control is questionable, so use the diazinon seed treater when ap- 

 plying them. If you use aldrin or heptachlor, you should also use the seed treatment. 



SMALL GRAINS 



Armyworm moths are brown, heavy-bodied ones that are attracted to lights at night. 

 They can now be found anywhere in Illinois, although more commonly in the southern 

 half of the state. 



HOMEOWNERS INSECT PROBLEMS 



Eastern tent caterpillar nests are common in the crotches of trees along the road- 

 sides. The caterpillars travel out from these nests to feed on the newly emerging 

 leaves. Small trees can be stripped of their foliage in a short time. Sprays of 

 carbaryl are effective. Recently, a bacterial culture Bacillus tkuringiensis has 

 been labelled as a biological control agent for this pest. The bacteria infect the 

 worm, which dies from the disease. These bacteria can be purchased under three trade 

 names, Biotrol, Dipel, and Thuricide. 



White grub damage is appearing in lawns and other turf areas . The infested areas 

 have either remained dormant, or else a partial stand of grass is appearing. The 

 most common symptom of grub damage is that the sod can be rolled up like a carpet, 

 because the grubs have eaten off the grass roots. Sod webworm damage done last fall 

 may appear 1 ) be similar, but the sod cannot be lifted easily. For control, apply 5 

 pounds of chlordane per acre or 1/2 cup of the 45-percent liquid concentrate per 1,000 



