Depends on how dry it is.25kg/ha of N or product?
You are correct regards urea being hard on seeds but if you have seperation than I’m sure rates can be considerably higher with no ill effects.
The yanks are mostly corn and many are very obsessed with squeezing the last ounce out of every acre. Also maize/corn Is a very hungry crop and putting the nutrients down where the roots go is more efficient that spinning it on and waiting for rain.Depends on how dry it is.
If it's dry it should be 25kg of urea.
Yes deeper placement or side banding would prevent the seed dying but that's not by any means a universal feature on British grain and fertiliser drills, more importantly the description in the original post doesn't suggest banding separately.
Amusingly the American corn growers who do use deep banded urea also then have to use fertiliser next to the seed.
Sometimes containing urea.
How did you get on with 100kg/ha or Urea down the spout with SBarley? Did you follow it up with another dose?Spoke with our agronomist who is quite high up in Velcourts and he said 100kg/ha of 46% urea will be fine. (would have asked him anyway)
Conflicting views here, so I will go with that.
Thanks for replies
First off, you are getting your kg/ha and units/acre mixed up, eg 100kg 46%/ha =37How did you get on with 100kg/ha or Urea down the spout with SBarley? Did you follow it up with another dose?
I'm thinking of trying it this year in a split hopper DD Avatar disc drill. 100kg of 46% urea would give me 46 units of N at drilling. So I would have to spread the rest after drilling. Makes me think what's the advantage if I've got to still go out with the Fert spreader? Could the total rate of N be reduced because I'm accurately placing N with the seed? Or could I up the rate to 200kg/ha (92 Units of N) and save an operation with the spreader? Or is there some middle ground between the two. Say 150kg/ha of urea (70units of N) down the spout and don't top up and save an operation with the spreader and a bit of N?
My tactic last year was to spread 90-100 units of N (Nitram not Urea) on the seed bed after drilling with a rapid at 500 seeds/m2. I also DD one field after grazed turnips. The yields were all fine with both methods.
Why change it? Well I now have a drill that can apply Fert down the spout so if it can be used to remove another operation then great and I think putting it on with a drill must be more efficient? I also have a lot more urea this year because it was cheaper per unit of N than AN. Urea takes longer to dissolve so it may be better in the slot than stilling on top.
Because you mentioned 46 units n. Units of n is a per acre thingThanks fish but I’m working in ha so not sure why you are referring to acres.
Anyway, I agree, urea wants to go on before drilling. Putting it down the slot with the seed is risky.
Yes, in that lethal area where people mix imperial and metric measurements, remember the NASA mars missionBecause you mentioned 46 units n. Units of n is a per acre thing
I didn't know that.Because you mentioned 46 units n. Units of n is a per acre thing
It worked fine with 100kg of urea down the spout and at least it went into some moisture and near the seed.How did you get on with 100kg/ha or Urea down the spout with SBarley? Did you follow it up with another dose?
I'm thinking of trying it this year in a split hopper DD Avatar disc drill. 100kg of 46% urea would give me 46 units of N at drilling. So I would have to spread the rest after drilling. Makes me think what's the advantage if I've got to still go out with the Fert spreader? Could the total rate of N be reduced because I'm accurately placing N with the seed? Or could I up the rate to 200kg/ha (92 Units of N) and save an operation with the spreader? Or is there some middle ground between the two. Say 150kg/ha of urea (70units of N) down the spout and don't top up and save an operation with the spreader and a bit of N?
My tactic last year was to spread 90-100 units of N (Nitram not Urea) on the seed bed after drilling with a rapid at 500 seeds/m2. I also DD one field after grazed turnips. The yields were all fine with both methods.
Why change it? Well I now have a drill that can apply Fert down the spout so if it can be used to remove another operation then great and I think putting it on with a drill must be more efficient? I also have a lot more urea this year because it was cheaper per unit of N than AN. Urea takes longer to dissolve so it may be better in the slot than stilling on top.
Benieith the seed row would be a perfect placement. In moisture and readily in the root zone. If your low in phos combining the two is supposed to make the phos more readily available.Thanks for your replies. With the info above and other reading I have done on US forums I think it's just too risky and it doesn't really save me time or money, as I still have to go over again with the spreader after drilling.
If you could get the urea a couple of inches benith the seed at the point of drilling it wouldn't be an issue. Well that's what some people do elsewhere with success.
Thanks all.
Benieith the seed row would be a perfect placement. In moisture and readily in the root zone. If your low in phos combining the two is supposed to make the phos more readily available.
I'd guess 90% of spring barley crops in NE Scotland are established with starter fert.
Not straight urea, but some would be blends containing urea.
We've bought 16.16.16 plus 6.5s for next years crop
Normally start in March. Just depends on weather. Never put any in Jan/Feb. Still cows in light land fields that are sown first.When would you guys tend to drill spring barley up there? I'm sort of assuming you are able to get good weather windows and go in Jan/Feb but I've no clue.