-4- 



Bacillus thuringiensis (Biotrol, Dipel, Thuricide) used in a spray has received legal 

 clearance for use, and it is effective. Follow the directions on the label when 

 using insecticides. 



WEEDS 



ARE HERBICIDES WORKING? 



It's a well-known fact that herbicides aren't 100 percent effective. Excessive rains 

 may leach some of the more soluble herbicides too deeply into the soil. If moisture 

 is lacking, the weed seedlings may not absorb the herbicide as they emerge through 

 a dry surface. 



Don't wait and hope too long if good herbicide performance appears doubtful. The 

 rotary hoe will usually do more good than harm, and the row cultivator isn't yet a 

 thing of the past. 



POSTEMERGENCE 2 ,4-D 



For greatest effectiveness, spray when the weeds are small and the easiest to kill. 

 Avoid spraying during wet, cool conditions when corn is under stress. 



When spraying corn with 2,4-D, do not add surfactants, detergents, atrazine and oil, 

 or other herbicides or additives that are not specifically approved for use with 

 2,4-D. About the only approved combination with 2,4-D for corn is 2,4-D plus Banvel. 

 Some additives or combinations might improve weed kill, but may also increase the 

 risk of corn injury. 



AATREX AND OIL 



t 



If you didn't get a herbicide on earlier, AAtrex can help control many weeds in corn, 

 including smartweed. Apply early before the weeds are 1-1/2 inches high, especially 

 to control the grasses. However, there is a possibility of corn injury if condi- 

 tions are unfavorable. 



Follow these suggestions to minimize the chances of injury: 



1. Apply AAtrex and oil within three weeks after planting. 



2. Avoid applications when corn is under stress from cool, wet weather or when corn 

 is wet as with early morning dews. 



3. Do not add 2,4-D to AAtrex and oil; corn injury may result. 



4. Do not allow crop oil to become contaminated with water prior to use; this may 

 affect the action of the emulsifier contained in the oil. 



5. Do not apply AAtrex after June 10, unless you plan to plant corn or sorghum in 

 that field next year. 



BANVEL 



Banvel is effective for controlling broadleaf weeds in corn. It is more effective 

 than 2,4-D on smartweed, and can also help control Canada thistle. 



