can you be a little more specific in what you want to use? And also what is SOSR?Has anyone had experience with combine drilling A/S with SOSR.
Was thinking of applying 50 kg/ha (weight) seems a good way of getting the sulfur requirement applied.
TIA
SF1
Sorry,York thanks for your reply,i'm talking about spring oilseed rape here.
AS is 21n 60so3 drilling in 24cm rows.
eg crop requirement 60kg/so3 spread all over the field,but placed the concentration would be greater,
any magic formulas?
Thanks for your reply York,Sorry,
our experience & numbers are different. I think you are trapping into the GB SO3 trap. On the whole continent we are talking about S = elemental S. From DSV site, here:https://www.dsv-saaten.de/raps/winterraps/duengung/schwefel.html
dass die Zufuhr von 30-50 kg S/ha ausreicht (that the application of 30-50 kg S/ha is sufficient). Now this is S and not SO§.
Sorry, I'm now very pedantic and not polite, but this trap of SO3, which you are falling into, it the major single reason for poor yields in OSR, been it winter or spring OSR on the creates island in the EU. OK, I know that there are a number of writers on TFF which are always claiming that all things are on this island different. But this can of worms I#m not going to open once more.
the banding will not help as it's just not enough, been banded or surface applied.
we do have great success with the combination of banding, 25 to 35 kg/ha of S90 or our propriotory product Elemental S with B and surface application, after emerging of 400 kg of 21-0-0-24.
York-Th.
p.s. you know why you are all talking about SO3? BEcause with SO3 low S numbers in fertilisers look big. And you read reports of OSR growning on the continent where all the S is as S and you think it's the same. Or are they converting the S to SO3 in the reports? Background, my assumption, is that Yara is knnown for a poor own S supply so they have trouble in adding enough S to their N sources. So declare S as SO3 and all looks great. I realise that with this posting I didn't make many friends. I still can pay for my fish & chips & black beer when I come over ;-)
N:S and NOT N:SO3 ;-)The recommendation around here is a N/S ratio of 5/1 in osr and 10/1 in cereals.
is almost as "feeling". And not debatable. Only measured is worth talking.Last year we put on 110kg/ha of SO3 = 44kg/ha of S on to some wheat. According to Stevie T it still looked deficient (the grain). Our OSR always has this amount, or even a bit more, wouldn't say we set the world on fire with its yields.
where do the desired values for tissue test results come from?is almost as "feeling". And not debatable. Only measured is worth talking.
Why not invest in tissue samples? They are not bankrupting the farm and then you know what is the status. More and more are doing it over here at various stages.
Had a Parsley grower, which is just poring on various mixes, each person walking his fields is telling him a different story. But he is afraid of loosing his crop so he spends heaps of money. But to invest into a tissue te4st to KNOW what is the status....
It's easier to have growers to spend money on a fancy mix = he is happy as it makes the plants green, than to get funds for tissue samples.
How many are monitoring the effectiveness of their sprays with tissue samples? I have on now which does dozens of tissue samples. Always before a foliar spray, then leaving a spot which doesn't get sprayed, and 3 weeks later this zero spot and the field are again tissue samples. You will be surprised how effective this sprays are.
After 2 years of monitoring over 50% of the foliar sprays are history for him.
I'm beeing a little straight, as I know that quiete a number of writers here are fond of foliar sprays. Unless you have done your own monitoring you are deceiving yourself an lying into your pocket.
Just think about it a moment. You never wondered why most foliar sprays have some sort of N in them?
I always thought that farmers are saying they are professionals. When I observe this how decisions are made I can't hinder that my doubts are growing.
York-Th.
not from me.where do the desired values for tissue test results come from?