Single Pass Systems are on the way out

[tweety]

Very recent work by NDSU shows that there is no difference applying once or multiple times. Irrigation or not. Fertigation or not.

http://www.theprairiestar.com/news/crop/split-n-applications-not-providing-significant-yield-quality-boost/article_16287210-9b1e-11e3-9604-001a4bcf887a.html

So um, ya, bad idea unless you want to support the oil industry.

[Jay-mo]

My best results are generally when the nitrogen gets applied in the ground in one pass with the seeding unit.
In our short season and crazy rains, if you get a chance to get across once, you better get your N down if you can.
If not, the sprayer can dribble it on in a hurry if needed.

[fjlip]

Guess we missed the memo to single pass!
Always fertilized in fall, seeded into harrowed stubble. Never spent $$$ on iron, a little black for warm up, usually too wet in spring any way.

[Hopperbin]

What worked last year has x fill in the blank percent chance working this year.

[Oliver88]

Never have done the one-pass system either.

NH3 in a separate pass prior to seeding, either fall or spring time depending.

[bgmb]

Who in the hell is going to spend their time "melting" urea so you can spray it on the soil surface. Put your fert in the ground where plants can get it. 100lb of nh3 in the spring, beats top dressing every time and way cheaper than urea.

[Klause]

And you know this, bgmb from trials?


The point of melting urea is to foliar feed. You're not putting it on the ground. You're getting plant uptake.


Urea also helps make chemicals hotter.... try 5lb solution with Liberty. You'll never have to worry about cleavers again.

[bgmb]

So why are we melting urea vs. using 2800? cheaper?

[WiltonRanch]

I really should do some foliar urea to see myself. I was under the impression foliar feeding was like feeding someone with an oatmeal enema.

[Klause]

Urea can be absorbed through the leaves. Ammonia can't. UAN will burn plants way more than liquid urea will...

Have a look at stuff like kugler... then you don't have to do the melting....