square feet of lawn area. Water the lawn heavily following treatment. This will 

 help move the chlordane down to the root zone. Treatment should be made before re- 

 seeding or sodding. It will provide grub protection for five years. 



Tree borers are becoming active again, as the average daily temperature increases. 

 Feeding activity by borers under tree bark can be noted by the appearance of frass or 

 sawdust-like material as it is pushed out of holes in the bark. At present, while 

 the foliage is sparse, trees can be examined easily for possible borer damage. 



In birch trees, the bronze birch borer infests limbs in the upper part of the tree, 

 causing ridges around the limbs and the branches to die. Flatheaded apple borers 

 attack many shade tree species, especially newly set trees. The damage usually ap- 

 pears on the trunk and the large limbs. 



Spraying with dimethoate (Cygon, De-Fend) will control both of these borers. In 

 central Illinois, make the first application in late May and again three weeks later. 

 Apply the treatments one week later in northern Illinois and one week earlier in 

 southern Illinois, 



Wrapping the trunk with paper will help control flatheaded borers. Fertilizing and 

 watering young trees will help the tree resist borer damage. Moth balls placed on 

 or in the soil around trees are of little or no value in preventing the borers from 

 getting into the trees, or killing them once they are there. Careless scattering of 

 moth balls around trees and shrubs can present a safety hazard, since these are often 

 mistaken for candy, picked up by children, and eaten. 



Flies will soon be found clinging to the leaves and stems of plants in gardens. They 

 are usually dead. But if they are alive, they will be sluggish. A fungus has at- 

 tacked and killed them. 



Oriental cockroaches, or black water bugs , are now appearing commonly in home basements. 

 These bugs are migrating from one area to another. An outside foundation spray of 1- 

 percent chlordane will help control them. 



WEED CONTROL 



INCORPORATE TREFLAN PREPLANT, AND FOLLOW WITH AMIBEN BANDED ON SURFACE 



The Amiben label carries a new statement: "Band applications of Amiben may be made 

 for broadleaf weed control over the top of preplant incorporated grass killers." Ei- 

 ther herbicide alone can give good grass control, but Treflan gives results that are 

 a little more consistent. Amiben can provide greater control of broadleaf weeds. The 

 question to ask is this: Will the 10 or 15 percent greater consistency in terms of 

 grass control and the added broadleaf control be worth the added cost? 



2,4-D NOT CLEARED FOR USE BEFORE SOYBEANS 



Using 2,4-D before soybeans is not specifically cleared, and there is no tolerance 

 established for 2,4-D in soybeans. With modern tillage equipment, it would seem 

 that most weeds could be controlled during seedbed preparation. 



START TILLAGE AS SOON AS NUTSEDGE APPEARS 



One of the best programs for controlling nutsedge is to start tilling the soil as soon 

 as the nutsedge starts to grow- -once a week for about three weeks, this helps to de- 

 plete the food reserves in the tubers. Just before the last disking, apply Vernam or 

 Lasso. Treflan does not give good control of nutsedge. 



