-5- 



Banvel (dicamba) is less likely to injure corn than 2,4-D, but is much more likely to 

 drift and injure nearby soybeans, vegetables, or ornamental plants. Banvel controls 

 smartweed better than 2,4-D, but is more expensive. 



HERBICIDES ON SEED BEANS 



Several herbicides are cleared for use on "seed beans." This restriction on a label 

 means that soybeans harvested from land treated with such a herbicide can be used 

 for replanting next year. They cannot be used for feed, food, or oil purposes, 

 unless this restriction should be removed before such sale or usage. Preforan, 

 Ramrod, and Londax are three herbicides that carry the "seed bean" restriction. 



MACHINERY 

 CLEANING SPRAYERS 



Corrosion in sprayers occurs naturally anytime the equipment is left idle, especially 

 when chemicals are also left in it. We suggest that sprayers be cleaned after each 

 period of use. When you change chemicals, it is also important to clean-out the 

 residue of the previous chemical. This will avoid the chance of reactions occurring 

 between different chemicals , and of resulting contamination or damage to crops . 



When chemicals are being added to the tank, try to mix only the amount of spray 

 materials you will be able to apply that day. And especially for the last tank, 

 try to mix only enough chemical to finish the spraying job. Avoid having left-over 

 spray material. 



Depending on conditions, it is a good idea to clean all screens and nozzles fre- 

 quently. Do not use a metal object to clean nozzles. Clean them with air, water, 

 or a toothpick. Nozzle openings are manufactured to close tolerances. One thrust 

 with a metallic object will make a nozzle useless for accurate spraying. A damaged 

 nozzle is difficult to detect; but if the pattern shows streaks, the nozzle has been 

 damaged and should be replaced. 



To clean a sprayer, mix a small box, or about 2 pounds, of a nonsudsing detergent 



with 30 gallons of water in the sprayer tank. Circulate this mixture through the 



by-pass for 50 minutes. Then drain, allowing some to pass through the boom and the 

 nozzles. 



If the spray material is water-soluble, a water rinse is sufficient after circulating 

 the detergent. But if phenoxy herbicides such as 2,4-D or brushkillers are being 

 used, an ammonia or charcoal rinse is necessary. 



For an ammonia rinse, fill the tank at least a third full with a solution of 2 quarts 

 of household ammonia per 25 gallons of water. Circulate the ammonia solution and 

 allow a small amount of it to flow through the nozzles. Let the remaining rinse 

 stand overnight, and then run it out through the nozzles. After that, rinse the tank 

 thoroughly with clean water. 



When you finish using the sprayer for the season, remove the nozzles and screens, 

 coat them with oil, and store them with the sprayer booms and hoses in a cool, diy 

 place. 



