Stocker Steve
Well-known member
Do you ever top dress N after they are up? Obviously pre plant N will be gone before it is ready to graze.
Stocker Steve said:Chemical N is very mobile. Run off, soak down, volatilize into air... Standard assumption is it mostly gone in 30 days. Corn growers know this and will put in on with irrigation water, or top dress several times per season, to get high yields.
callmefence It's usual to see them putting anhydrous in the ground and disking in urea here in January. They don't start planting until March. Now they do top dress corn . But I wouldn't think so if they where grazing it . They're trying to produce grain. [/quote said:Anhydrous is different.
Some people broadcast early, and N lasts alot longer if it is cold and dry, but it is a bad idea.