liquid fert recipie

[samsung]

Hello, we are currently mixing urea and AS to get a 23 % N (w/v) solution.
Does anyone have a recipe for a stronger mix.
We are using an N sensor at the moment , but finding it difficult to meet the extremes of the peaks and troughs.
I thought a stronger mix would reduce the range in terms of litres/ha needed in order to meet N sensor demands. Thoughts ? Thanks Phil.

 

[Brisel]

@Andrew K @Clive

 

[B'o'B]

https://thefarmingforum.co.uk/index.php?threads/liquid-fertiliser-recipes.13573/#post-228907

 

[Richard III]

https://thefarmingforum.co.uk/index.php?threads/liquid-fertiliser-recipes.13573/#post-228907

I keep a link to that post too, by @Colin !

I don't think it is possible to get past about 24N, without adding a little AN to the mix.

 

[Andrew K]

You do need to add AN past 24N, scorch risk goes up a bit as well, but not massively.

 

[Clive]

I keep a link to that post too, by @Colin !

I don't think it is possible to get past about 24N, without adding a little AN to the mix.

i've done a 26 mix but it takes ages

 

[Clive]

Hello, we are currently mixing urea and AS to get a 23 % N (w/v) solution.
Does anyone have a recipe for a stronger mix.
We are using an N sensor at the moment , but finding it difficult to meet the extremes of the peaks and troughs.
I thought a stronger mix would reduce the range in terms of litres/ha needed in order to meet N sensor demands. Thoughts ? Thanks Phil.

must be very big variation ? when we used N sensors it never really adjusted to much range - +/- 50L/ha or so

Do you think VRA N really is worth it ? its not something we do anymore

 

[samsung]

Hello Clive, I don't get more than 200 lits variation using N23 across a rotation using chicken litter. I contract apply for a neighbour who uses a lot of contractor applied slurry with umbilical and I suspect insufficient pre mixing of slurry.So can get variation of 300 lits. which asks too much of the equipment. Thanks S

 

[PSQ]

I'm glad you've asked the question, because I need to know the answer too. I've been using home brewed 23% UAS and 20% Urea solution this year, and while it was cheap as chips, it was a bit time consuming to spread so much water.

Omex Nitroflo-S is 33% N, straight Nitroflo is 39%, (not the 30 listed in their literature, that is per cube; though how a percentage can differ between volume and weight is a mystery to everyone but omex). So stronger brews can obviously be made.

The 34% recipe mentioned in the earlier thread must be wrong, as the SG is sky high when compared to the Nitroflo above at SG 1.30. Someone must have right ingredients list, surely?

 

[B'o'B]

I'm glad you've asked the question, because I need to know the answer too. I've been using home brewed 23% UAS and 20% Urea solution this year, and while it was cheap as chips, it was a bit time consuming to spread so much water.

Omex Nitroflo-S is 33% N, straight Nitroflo is 39%, (not the 30 listed in their literature, that is per cube; though how a percentage can differ between volume and weight is a mystery to everyone but omex). So stronger brews can obviously be made.

The 34% recipe mentioned in the earlier thread must be wrong, as the SG is sky high when compared to the Nitroflo above at SG 1.30. Someone must have right ingredients list, surely?

Yes there is something not right with the 34% recipe, I can't work out what is wrong but nothing adds up right with it.

 

[Colin]

I'm not sure on the 36% recipe I know someone that mixes it so I can double check. Personally I'm sticking with straight AS for first dose as less chance of scorch then followed by two doses of straight urea liquid as it is hard to scorch with that, compared to many others using stronger mixes. We run a 36m sprayer with 6000L tank and on 1200 acres if cereals it gives loads of capacity for that job. N20 is also quicker to mix, 36 takes twice as long, IME.
Then again I worry about scorch, then go and apply cerone to some wheat and with the hot, dry weather what happens!

 

[Colin]

Hello Clive, I don't get more than 200 lits variation using N23 across a rotation using chicken litter. I contract apply for a neighbour who uses a lot of contractor applied slurry with umbilical and I suspect insufficient pre mixing of slurry.So can get variation of 300 lits. which asks too much of the equipment. Thanks S

Variable soils as well? That's quite a range, a variation of c. 69 kg/ha N which is as much as I put on in one dose!

 

[PSQ]

I know someone that mixes it so I can double check.

Thanks in advance Col.

Doing T2's today, and its plain to see that us smart arses doing 3 or 4 splits have got it wrong (again) this year.
The first dose did SFA for tillering or colour in the long cold spring (guessing due to Manganese and cold soils).
The last dose hasn't been washed in sufficiently despite 2 x 12mm showers in the last 6 weeks. The doubled areas on the headlands give the game away, as they are looking heaps better.
The codgers way of thumping on a single dose of 200kg/N in late Feb / March would have been the strategy to go for this year.

Thank God we can do what Doctors do, and bury our mistakes...

 

[Colin]

Do first dose ASAP then next two whenever we can , maybe 3 or 4 weeks between them, get it in the soil and let it work!
T2 done last week but we would have been better leaving it in the shed until rain was forecast and maybe done a head and shoulders. Dry as anything here wheat burning up on lighter knolls (light is relative here, it's all light) w, barley and rye look ok at the moment but are bound to be suffering, oats, mmmmmm! Nuff said. Irrigating spuds in advance of tuber initiation, and starting to wonder what the worth of an inch of irrigation would make to cereals!
Back to the N though, we have done some inadvertent trials, results so far are, lower seed rate needed on lighter knolls (free living nematode damage has thinned the crop and its much greener in those areas)
Early N is paramount (had some blocked dribble bars when we started and those areas have never caught up)
Oats could cope with more N when using a double dose of moddus or medax max (had a field that had lots of chicken litter and the double dose has kept it down to MAYBE 18" high, not sure of the yield affect of this yet though but it's not going to lodge!)

 

[PSQ]

@Colin did you ever find the recipe for the stronger brew?

 

[samsung]

Yes please and thanks for all replies so far .S

 

[Colin]

@Colin did you ever find the recipe for the stronger brew?

Not yet, I will chase him up, been too busy hiding in my bunker on Skye

 

[Colin]

So,
AN 6.5t
Urea 5t
AS 1.5T
WATER 5.06T
To make 14000L, takes ages though, SG 1.29

 

[Colin]

Correction 5an 6.5urea he swears that's right and that several people use it

 

[Colin]

Just had a look at the other thread it was the water that was wrong