If swarms of flying termites appear, check for mud tubes on the inside and outside of 

 the foundation walls. Many termite problems are extremely complicated and require an 

 experienced exterminator. 



WEEDS 



NEW HERBICIDE CLEARANCE 



Lorox- Lasso for corn. A tank mix of this combination is now cleared for use on corn 

 as well as soybeans. The rates are about the same as those given with the recent 

 clearance for soybeans. They vary with soil type and organic -matter content. The 

 ratio is about 1 pound of 50W Lorox (commercial product) to 1 quart of Lasso. The 

 rates would vary from 1 + 1 to 2-1/2 + 2-1/2 per acre. 



TIMING PREPLAN! HERBICIDE APPLICATIONS 



Treflan . It can be applied up to ten weeks prior to planting. Incorporation can be 

 delayed up to 8 hours --but the sooner the better, especially if the ground is moist and 

 the sun is hot. 



Planavin . Application can be made up to six weeks prior to planting soybeans. Incor- 

 poration can be delayed up to 48 hours . 



AAtrex. This can be applied up to two weeks prior to planting. There is no hurry about 

 incorporation to avoid surface loss. 



Sutan. It can be applied up to two weeks prior to planting. Immediate incorporation is 

 necessary. 



Vernam liquid . This can be applied up to 10 days prior to planting soybeans. Immediate 

 incorporation is necessary. 



Lasso. This can be applied preplant on soybeans or corn within 7 days of planting. In- 

 corporation is recommended only for control of nutsedge. A higher rate is desirable if : 

 Lasso is incorporated. In general, there is no hurry to incorporate Lasso as there is • 

 little- -if any- -surface loss. 



PLANT DISEASES 



WINTER-WHEAT AND OAT-SEEDLING PROBLEMS 



Most of the specimens received in our plant disease clinic recently have been winter whe: 

 and oats. The same symptoms appear on all the plants. The older leaves are dying or del 

 Occasionally, there is leaf discoloration- -purple or yellow. These symptoms usually ap- 

 pear uniformly throughout the field. When a primary pathogenic organism is not isolated 

 the problem can be attributed to winter injury. 



In Illinois, heaving probably causes most of the winter killing. Plants are lifted from 

 the soil by alternate freezing and thawing, leaving root tissue unprotected and often 

 broken. The plants should survive if the roots of the young plants appear healthy- -whit* 

 and sturdy- -and the new leaves are a normal green color. 



