dontknowanything
Member
- Location
- Cambridge
Lets wait until harvest before you declare it's worked...!mix them with SOSR so you can justify the Nseems to be working !
Cereals phosphate strategies
- Thread starter dontknowanything
- Start date
dontknowanything
Member
- Location
- Cambridge
Feldspar
Member
- Location
- Essex, Cambs and Suffolk
it justified the use of N on a legume if nothing else
Peas look great right now but the OSR isn't very thick
dontknowanything
Member
- Location
- Cambridge
I think I've found some MAP, same price as DAP. Should know for sure in a day or two
dontknowanything
Member
- Location
- Cambridge
Anyone know where to get hold of tech grade DAP/MAP?
Feldspar
Member
- Location
- Essex, Cambs and Suffolk
What do you mean by tech grade? I'd be interested to know if you can find some MAP at the same price as DAP.
Haven't got round to asking but Origin claim to do it:
http://www.originfertilisers.co.uk/straights_mon_ammonium_phosphate
Haven't got round to asking but Origin claim to do it:
http://www.originfertilisers.co.uk/straights_mon_ammonium_phosphate
dontknowanything
Member
- Location
- Cambridge
Tech grade is finely ground stuff
now in all the discussion on P needs to be spread I want to go a step back and look on some interactions:
how about Zi & Mg levels? Without both you are not getting any P into the plant
looking at all the soil results I got so far from the island I only can say that P is not the no 1 topic. In majority of cases it's the Mg.
And I can say that I see this connection as well over here. That is the reason that farmers which started with 10 t/ha of Wheat with good protein are now aiming for even higher yields and talk now about 1/3 of the normal spray program.
York-Th.
how about Zi & Mg levels? Without both you are not getting any P into the plant
looking at all the soil results I got so far from the island I only can say that P is not the no 1 topic. In majority of cases it's the Mg.
And I can say that I see this connection as well over here. That is the reason that farmers which started with 10 t/ha of Wheat with good protein are now aiming for even higher yields and talk now about 1/3 of the normal spray program.
York-Th.
dontknowanything
Member
- Location
- Cambridge
I know P is not the only thing, but it's what I'm concerned about in this thread. Can we try and not go off topic into Mg & Zn levels please!
sorry, I can't. Because levels are absolutely irrelevant. And sorry, plants don't read what they should do.
for me it only counts how the plants& beasts react.
So I better shut up as I can't only look on indices. I will not post under this thread any more to not interfere.
York-Th.
7800
Member
- Location
- cambridgeshire
Sewage sludge probably the best but the smell and out of control of the application, those contractors can be useless.
DAP in autumn best compromise.
DAP in autumn best compromise.
Sludge comes with heavy metals and chlorine - I won't use it anymore
I think bi annual fiberphos pre spring crops and some placed DAP / MAP is the future for me, seed dressed with maxi-phi for other stuff
7800
Member
- Location
- cambridgeshire
fibrophos looks a bit of a faff, the cheaper price is taken up by contractor application, heaps tipped up on fields, very narrow spread width, more wheelings so got to do on stubble really.
Fits in well with my spring break cropping, terminate cover crop early march, spread fp, lime and compost etc spray again if needed and then drill early April onward
Spread at 10m on ctf wheelings (30m system) and use enough to supply the following wheat crop
Feldspar
Member
- Location
- Essex, Cambs and Suffolk
Have you checked the heavy metal content of conventional artificial fertilisers? I seem to remember reading that one might be surprised how much there is in our normal everyday products. Sadly can't remember the source of that claim.
Also does sludge contain chlorine gas or chloride ions? Two different things and not necessarily as bad (or as good) as each other.
Sludge contains stuff that people throw down their toilets and sinks to kill bacteria - surely that isn't nice for soil ?
The only artificial fert I will be using is UAS liquid home made - not aware of any heavy metal content in at products I'm using to mix it ??
dontknowanything
Member
- Location
- Cambridge
whats DAP then?
I was thinking top dress N but yes your quite right
If I use fp it's use will be quite limited at placement
I would still prefer MAP but its hard to get hold off
Feldspar
Member
- Location
- Essex, Cambs and Suffolk
My point is that just because it's called ammonium sulphate doesn't mean that's all there is in it. All I'm saying is question what else is present in the stuff in the bag.
It is not necessarily the case that what people put into the sewage system will remain intact in the product that arrives on the farm. They have a treatment process about which I know almost nothing so simply point out that there is no guaranteed logical entailment, you have to do the research to find out whether or not it is nice for the soil. (Also question what people feed to chickens as well and convince yourself that chicken muck will not have the same problems as sewage sludge.)
Personally I would be concerned about things like endocrine disruptors (http://www.ncbi.nlm.nih.gov/pubmed/19092195) in sludge as well as heavy metals.