Urea

CornishTone

Member
BASIS
Location
Cornwall
Depends how much confidence you have in the AN manufacturer's 'independent:rolleyes:' trial work on volatility. Most of the world uses urea only, and a lot of that is an awful lot hotter and drier than the UK (especially NI).

But most are still very careful about application timings. Immanent rain, or at least moist soil, is still an important consideration.

That said, even out here in South Australia they don't consider it a problem below about 28 degrees. I think one study even ventured that it was safe up to 32 degrees.

Either way, I doubt you'll have an issue where you are at this time of year, so crack on!
 

awkward

Member
Location
kerry ireland
But most are still very careful about application timings. Immanent rain, or at least moist soil, is still an important consideration.

That said, even out here in South Australia they don't consider it a problem below about 28 degrees. I think one study even ventured that it was safe up to 32 degrees.

Either way, I doubt you'll have an issue where you are at this time of year, so crack on!



What would be the rule of thumb be when applying urea in Aus. When and when to use something else.
 

willy

Member
Mixed Farmer
Location
Rutland
Have to say in the dry east, I have switched back to an. Urea has been a waste of time nearly especially on high ph soils. But I would say on the west especially Ireland it would be a good product.

Back in the day when I Ici where deciding to build fert plants it wasn't by incident as it was the more expensive option but an was the most suitable for the uk.

A lot of hot countries place the urea in the soil, not on top
 

neilo

Member
Mixed Farmer
Location
Montgomeryshire
Thanks folks, 1st year to use Urea, 50kg per acre on now, old folk believed it to be sore on land but fed up with poor results from compond sowed in April.

'Sore on land' How so?:scratchhead: I was always led to believe it was less acidifying and kinder to soil microbes, than AN. I'm back on AN this year, after 2 years of urea, the decision being made purely on price. I'm already wondering if I'm made the right decision though.
 

CornishTone

Member
BASIS
Location
Cornwall
What would be the rule of thumb be when applying urea in Aus. When and when to use something else.

Most urea in this area is top dressed in the winter months so temp isn't an issue. Soil moisture is key, so the guys in the dryer, mallee country will have a pretty fluid N program. If rain comes, apply a bit. If it doesn't, don't!

For the guys in the more reliable rainfall country, they'll have a set program for N dictated by Deep N sampling and average growing season rainfall, anticipated yield and protein requirement, and then adjust according to what rain actually falls. Last year was the wettest season since 1927 so extra N was applied in late winter/spring to take advantage of this. Many reported the highest yields they've ever had.

I haven't started the Deep N sampling yet but, with such a wet year and good growth, I'd expect soil N levels to be pretty low going into autumn so urea applications may well be up this season. Although they are predicting a late autumn break, so hopefully this won't be a pattern for growing season rainfall.
 

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