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First- generation corn borer moth emergence is now complete in southern Illinois. Corn 

 damage is not expected to be a problem- In the central section, 15 percent of the 

 moths have emerged and egg- laying has started. Pupation reached 32 percent in the 

 northern section. First -generation borer infestations will also be low in these sec- 

 tions. 



FORAGE INSECTS 



Alfalfa weevil larvae are still numerous in many fields. In some cases, they are dam- 

 aging the new growth of the second crop. If so, an insecticide application may still 

 be warranted. 



True armyworms were reported to be damaging a field of timothy grown for hay this week. 

 Armyworms are also present in grass pastures and in grassy hay fields. If populations 

 are heavy and their food becomes scarce, they may migrate to adjacent corn and cause 

 considerable damage. Carbaiyl (Sevin) at 1-1/2 pounds of the actual chemical per acre 

 or trichlorfon (Dylox) at 1 pound of the actual compound per acre as a spray will ef- 

 fectively control armyworms in grasses . There is no waiting period for grazing or 

 cutting after spraying with these insecticides. 



INSECTS IN STORED GRAIN 



These insects are lying in wait for their summer's feast. Wheat harvest is near. Fol- 

 low these steps to effectively protect stored wheat from insect attack: 



1. Clean out all old grain and other debris from within and around the bin. Clean 

 out grain-handling equipment. Feed the first few bushels coming from the combine 

 to livestock. 



2. Spray the inside surfaces of the bin to the point of runoff with malathion. Mix 

 3 ounces of the 50- to 57-percent liquid concentrate per gallon of water. 



3. If the wheat is to be held for a month or more in storage, apply a malathion/ water- 

 base spray to the wheat as it is augured or elevated into the bin. Mix 1 pint of 

 50- to 5 7 -percent malathion liquid concentrate in 3 to 5 gallons of water and apply 

 this amount to each 1,000 bushels. 



4. Hang one dichlorvos (DDVP, Vapona) plastic resin strip per 1,000 cubic feet of 

 overspace immediately after storage. Replace the strips in about eight to ten 

 weeks with new strips . 



5. Reinspect the grain at regular monthly intervals for the presence of insects. 



HOMEOWNER INSECT PROBLEMS 



Periodical cicadas are now emerging in many localities in the northern third of the 

 state. Egg-laying will take place about a week after the moths emerge from the soil. 

 Young trees and shrubs that may be damaged by egg-laying can be protected with a net- 

 ting such as cheesecloth. Carbaryl (Sevin) applied as a spray when the female cicadas 

 are laying their eggs will reduce damage. 



Bagworms are beginning to hatch in the central section. These tiny worms can defoli- 

 ate evergreens such as junipers, as well as some shade trees. As these worms feed, 

 they construct a spindle-shaped bag in which they live. In the southern section, sprays 



