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- Thread starter willy
- Start date

- Location
- Forfar,Angus,Scotland

Quite happy to be proved wrong but I need to apply 48units/ac on spring barley,according to omex chart this equates to 197 l/ha is this correct or am I missing something?I’m not sure you have your head around it? 24 and 30 from the same company is different concentrations of N but normally done to allow different amounts of S.

24N from Omex and 30N from yara would be almost exactly the same. 1 tonne would give 240kgs of N and 1 cube would give 300kgs of N. You would have to buy the same amount and apply the same rate to get the same amount of N.

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- Location
- Aberdeenshire

That’s correct if using Omex 24. Would give 60kgs / ha of N and 19kgs / ha of S.Quite happy to be proved wrong but I need to apply 48units/ac on spring barley,according to omex chart this equates to 197 l/ha is this correct or am I missing something?

View attachment 991434

It was your statement about different concentrations that was confusing. For example to get 60kgs of N of Yara 29 you would need 207ls but it would give 24.6kgs of S.

- Location
- Forfar,Angus,Scotland

Wasn't stating anything,liquid is new to me,what i was trying to say was that 788lts(1t) of omex 24n will cover the same acreage as 1t 24% granular,both will give me 48units across 10 acsThat’s correct if using Omex 24. Would give 60kgs / ha of N and 19kgs / ha of S.

It was your statement about different concentrations that was confusing. For example to get 60kgs of N of Yara 29 you would need 207ls but it would give 24.6kgs of S.

- Location
- Aberdeenshire

I'm new to it too, and I'm happy to be corrected.Wasn't stating anything,liquid is new to me,what i was trying to say was that 788lts(1t) of omex 24n will cover the same acreage as 1t 24% granular,both will give me 48units across 10 acs

In my pea brain. 1t of 24% granular contains 240kg of N?

1 t of liquid 780l contains 7.8 x 24. 187kg of N ?

So can't compare a ton of liquid fert and a ton of granular fert directly.

@Brisel What is the answer?

- Location
- Aberdeenshire

780lts omex 24n is the same as 1ton of granular 24n,bit more complicated but means we can cover more ground on a fill,think Yara you need 1000lts to be the same as granular,omex obviously more concentrated.

It was this where you said you would need 1000ls of Yara against 780 of Omex for the same amount of N. It’s not the case when comparing the equivalent grades.

I went to liquid 3 years ago and there was a lot of bull poo to cut through to get the info you want to make a fair comparison. In the end we went with Yara as I prefer looking at volumes as it’s easier. We have since bought 2 tanks of our own so we can shop around and compare prices. When I bought at the start of September Omex wouldn’t quote and Brineflo were 2p a kg of N more for less S.

The other thing to watch is they always give you a tank which is too small. Means you end up paying more for spring loads than buying everything in the autumn.

- Location
- Aberdeenshire

Your getting confused with weights and volume between the different companies.I'm new to it too, and I'm happy to be corrected.

In my pea brain. 1t of 24% granular contains 240kg of N?

1 t of liquid 780l contains 7.8 x 24. 187kg of N ?

So can't compare a ton of liquid fert and a ton of granular fert directly.

@Brisel What is the answer?

Omex 24 is 240kgs of N in one tonne of liquid.

- Location
- Aberdeenshire

Hope I'm working it out correctly when applying it !Your getting confused with weights and volume between the different companies.

Omex 24 is 240kgs of N in one tonne of liquid.

Ours is from Agrii.

Could have a lot more kg of fert in tank than I thought.

- Location
- Aberdeenshire

Get a chart from them. Know someone who went wrong with the agrii stuff and ended up under dosing as he used the wrong chart from Omex or Yara. That’s was Agriis own stuff. As opposed to Omex through AgriiHope I'm working it out correctly when applying it !

Ours is from Agrii.

Yes took a bit to get my head round it,omex site helped, 24n is actually 30n but applied at a reduced rate of around 780lts rather than 1000lts which brings it down to 24n,cuts down on transport and storage I suppose,granular is so much easier to work out!

This is not true. Omex 24N is just that 24N and Omex 30N is just that 30N.

- Location
- Forfar,Angus,Scotland

Taken from omex siteThis is not true. Omex 24N is just that 24N and Omex 30N is just that 30N.

Yep and as it shows a different product. 24N is 307kg N / 1000 litres while 30N is 390kg/ 1000 litresTaken from omex siteView attachment 991455

- Location
- North Yorkshire

Thanks for dragging me into this!I'm new to it too, and I'm happy to be corrected.

In my pea brain. 1t of 24% granular contains 240kg of N?

1 t of liquid 780l contains 7.8 x 24. 187kg of N ?

So can't compare a ton of liquid fert and a ton of granular fert directly.

@Brisel What is the answer?

If you see a price per cubic metre (Yara) then that is a direct equivalent of a solid fertiliser. 1000 litres of N24 = 24% N and you apply it through your sprayer at 100 l/ha to get 24kg of N

This is where I am less certain - a tonne of Omex/Frontier/BFS N24 will still contain 240 kg of N but you will have to multiply by the specific gravity to create the l/ha dose rate. Using the table above, Nitroflo 24 w/w would be equivalent to Yara’s N30 w/v.

Am I contradicting myself? Look at the units of measure. Price per cubic metre compares with price per tonne of solid and per tonne of liquid for the same % nutrient. Thinking about volumes is where the confusion creeps in.

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- Location
- North Yorkshire

That depends on the price. Savings using liquid mostly depend on farm logistics, not price as liquid is usually priced against Nitram or Extran. Start thinking about clearing grain sheds early for bagged fertiliser storage then double handling the bags & disposing of the empties then pumping bulk liquid seems easier when you have excess sprayer capacity.So if your putting 110 units per acre in granular how much could you save using liquid instead?

Having insufficient sprayer capacity, corrosion etc is one of the downsides. Building concrete pads and bunds is the main cost with liquid, as well as how you buy or rent the tanks. High K concentration is impossible in liquid fertiliser unless you move to suspensions which involves specialist tanks and sprayers. This has been the subject of many long threads so I won’t go further in this one.

What are you liquid boys being quoted?

Bought in July but N24 has been delivered here at £229/tonne.

Unfortunately without a time machine that price is a little out at the moment!Bought in July but N24 has been delivered here at £229/tonne.

- Location
- Lancashire

17-10 £315/tonne today

Jan
**11**

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