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Tractor Talk Discussion Forum

ot corn question

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kyplowboy

10-05-2007 20:42:26




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Can you use urea on corn ground insted of NH3? No one around here does but wondering why. I am going to put out a corn crop next year and don't have the horse power to put down anhyrous.

Thanks in advance, any ideas welcome.

Dave




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kyhayman

10-07-2007 15:28:53




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Sure can, in fact I dont know anyplace east of Elizabethtown that even sells anhydrous. All the corn here gets urea or ammonium nitrate. For that matter, I only have two urea sources within 40 miles, everyone else stocks ammonium nitrate exclusively. There are a couple of 'inhibited' or coated ureas on the market. I got some put on tobacco a few years ago from one of the dealers that stocks it. Good stuff, yield equalled or exceeded ammonium nitrate at a lower cost. I wouldnt want to put it on in no till, too much volatilization. In notill I'd go with ammonium nitrate. Its running 350 a ton prepaid now for spring application @ 34% actual N.

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msb

10-06-2007 07:02:25




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Urea is simply anhyrous ammonia that is dropped in a tall tower where it salts out. That is why it is round balls. It volotizes(sp?) quite rapidly in sunlight and in dry weather. That is why it needs to be incorporated. I would have it spread and then disk it in as soon as possible.



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John (C-IL)

10-06-2007 05:42:32




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Urea has a unique set of problems that most have addressed. One thing not mentioned is the volume of material needed to reach your application rates. At 46% N 200# of urea will only give you 92# of N. In this area you will need about 300# of urea per acre to get in range of your nitrogen requirements. If you are dealing with a small acreage that isn't a problem. But it will take 25 tons of urea to do 160 acres.

You might also ask the local fertilizer company if they offer custom application. Around here that is the hot setup. Custom application frees you up to do important things like planting.

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DAN9-Midwest

10-06-2007 03:27:16




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Well, I have grown sweet dorn for a number of years and here's what I do. Normally, I plant and fertilize 4" next to the seed and 4" down with dry fertilizer. It depends on the soil test. Some say you can put a lot of dry N/urea down at planting and it will hold through the year. I think this to be true as long as no heavy rain.

At 6 to 8" high I sidedress with 46-0-0 and use an old John Blue sidedresser set up on a small tractor and cultivator and driven by a chain and the rear wheel. It takes some figuring to get the rate correct.

Both ways have worked for me and folks say my corn is some of the best they have ever had.
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James22

10-05-2007 23:12:06




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
NH3 is a lot cheaper per unit nitrogen. We have used urea and 28%. Really need to work both in, but if you have a good, timely rain that may do the trick. We spread urea either with the coops cart or with our spreader. The coop sprays the 28%. We have put preplant chemicals with the 28%, but you got to be sure not to work it too deep. Generally in the spring we put 28% or urea on fall ripped or chiseled ground and work it 3-4 inches as a leveling pass. The chemicals are then sprayed and typically worked shallow again with the field cultivator. This year we didn't do a second pass and it was too dry for the chemicals to effectively work. Since we had planted RR corn it was later resolved by spraying RR.

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kyplowboy

10-06-2007 03:08:42




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 Re: ot corn question in reply to James22, 10-05-2007 23:12:06  
Thanks, I know nh3 is cheaper per unit, I just don't have a tractor big enough to put it down with. Hope to have one in the next few years but if I can spend a little extra on urea in the spring I can take my time finding a tractor.

Dave



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Gene Dotson

10-05-2007 22:44:14




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Urea will be fine for corn. Incorporate before planting to minimize loss. Liquid 28 percent would be more cost affective if you have a sprayer. Can be applied post emerge for quicker results... Gene



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Fordfarmer

10-05-2007 21:01:26




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 Re: ot corn question in reply to kyplowboy, 10-05-2007 20:42:26  
Don't know the rates, but guys around here use urea. I use 17-10-30 starter myself, along with manure.



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low budget

10-06-2007 02:34:47




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 Re: ot corn question in reply to Fordfarmer, 10-05-2007 21:01:26  
Thats what I used to do too. You can sidedress urea after the corn is up if more nitrogen is needed. Best if you can do it just before a light rain so your urea doesnt evaporate.



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kyplowboy

10-05-2007 21:15:11




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 Re: ot corn question in reply to Fordfarmer, 10-05-2007 21:01:26  
Thanks. I have a request in with a few difernt guys for some broiler litter so that will help some. This is a new venture for me. I have a line of hay and tobacco equipment and a guy who will custom harvest for me. It will be nice if all I need is a planter. Thanks again.

Dave



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