I am in the same situation. Knew what was going on before I did it. Was put on Monday. Farm Center I buy from says 6 days and they hope that keeps people out at least 3 days. I goggled alot of information about it. Seems like two things really help. 1) Putting it on deep helps. This year that might not be as valuable as most years as it was wet and they think the ammonia might channel upward in the slot some. Therefore the ammonia might be higher than it was put on and cause injury. 2) Lower amounts convert into the soil faster. I think some of the research I read said 100 lbs. did very little if no damage compared to 200 lbs. Your 140 lbs. therefore wouldn"t be too bad. The first 24 hours was terrible with rates at 200 lbs whereas 100 lbs caused little if any damage when the ammonia was put on at 7 inchs. I think the article(s) said the ammonia migrates into a circle about 6 - 7 inches in diameter. So, if you put it on 10 inches deep and plant at 2.5 inches deep you might be OK - especially if you only put on 140 and could wait at least 2 days. I know a guy that applied ammonia one day and planted the next without any problems. Another guy I know said he was told to wait 8 hours. Another situation is how quickly the corn roots are going to grow. Hot, moist soils may cause quick root growth and the roots may try to grow into the ammonia zone which is still toxic to the plant roots. Cooperatives and farm centers are NOT GOING TO TELL FARMERS TO GO IN TOO QUICKLY!!! They are going to error on the long side. They do not want any damage credited to them. Seed supplies are tight, seed costs more money, and it is getting late enough to plant the first crop let alone trying to replant the corn due to damage. I left a field where I am going to side dress 28% which allowed me to plant a couple of days while I waited on the ammonia applied fields. If you could hit the center between the ammonia slots I think you would be OK to. Personally I am going to wait 4 - 5 days and go.
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Today's Featured Article - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
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