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

 days when air temperatures will be about 60° F. for several hours after appli- 

 cation. Do not harvest for 7 days after treatment with Imidan, methoxychlor, 

 diazinon, or mixtures of them. There is no waiting period for malathion. Do 

 not apply Imidan more than once per cutting. 



Clover leaf weavils can be found in an occasional red clover field, but populations 

 thus far are not very high. The larvae are green with a white stripe down the back 

 and brown heads. They feed at night and hide under the ground debris during the day. 



Check red clover fields that have a heavy straw or mat covering. If plant growth is 

 slow and leaf- feeding becomes severe, a spray of 1 pound of malathion will control 

 this insect. For best results, apply malathion when air temperatures are 60° F. or 

 higher. 



CORN AND SOYBEAN INSECTS 



White grubs have been reported as numerous in some fields last fall and this spring, 

 mainly ones in a continual corn-soybean rotation. The grubs are generally large, in- 

 dicating that they will finish feeding about mid-June and burrow down into the soil 

 to form the resting (pupal) stage. Next year about this time, the adult June beetles 

 will emerge and lay eggs in soybean or sod fields to complete the cycle. 



If a grub-infested field is to be planted to soybeans, a delay in planting to allow 

 the grubs to finish their feeding period may be helpful. A planting- time treatment 

 with diazinon at 2 pounds of actual diazinon per acre, applied as a 7- inch band ahead 

 of the planter press wheel, may give some control. 



If the field is planted to corn, planting-time treatments of the organic phosphate in- 

 secticides (Dasanit, Dyfonate, diazinon, Mocap, or Thimet) will give some help, but 

 may not be adequate if the infestation is severe. The insecticides listed should be 

 applied as a 7 -inch band ahead of the press wheel. 



HOMEOWNER INSECTS 



Bagworms should be pulled off now. About half of these bags are full of eggs that will 

 hatch within four to eight weeks. The more eggs that are destroyed now, the easier it 

 will be to control the bagworms later. 



Eastern tent caterpillars are defoliating trees in some areas of southern Illinois. 

 Cool weather has slowed their feeding activity, but warmer temperatures will bring 

 increasing damage. These dark-colored worms with a white stripe down the back spin 

 webs in the crotches of trees, especially wild cherry. Willow, peach, apple, and 

 ornamental trees can also be damaged. 



If control is needed, apply a spray containing carbaryl (Sevin) or malathion. For 

 carbaryl, mix 2 tablespoons of the 50-percent wettable powder per gallon of water. 

 For malathion, mix 2 teaspoons of the 50- to 57-percent liquid concentrate per gal- 

 lon of water. 



Winged termites and ants are making their spring appearance and are causing concern 

 to homeowners. They can be distinguished from each other rather easily. A flying 

 termite is always black. A flying ant may be black, yellow, tan, or almost red. 

 The back wings of an ant are shorter than the front ones . The two pairs of wings 

 on a termite are of equal size. An ant has a constricted, or narrow, waist just 

 behind the wing-bearing section of the body, the termite does not. The antennae 



