Fertilizer Recommendations

AntrimGlens

I've just got my soil samples back and looking at them I'm high in K and Mg. I'm looking for peoples advice as to what I should spread as i don't really get a good hit with Urea in Spring. Usually went with 27% N in Spring and other than some 20.10.10 last year for the past few years it's been mostly straight CAN that's been applied throughout the grazing season.
Fields only used for grazing sheep and silage.
There doesn't appear to be many compound Fertilizer products that have no Potash in them (limited Yara products around here and Gouldings would be the only other brand locally).

Field Soil pH P K Mg Org Matter % Calcium Fert Recommendations (kg/ha) Lime
P K Mg
Back Field 6.1 2- 1 6 18.60% Excessive 20 30 0 2T/ac 2 yrs ago
Rock 5.9 1 3 7 21% Excessive 50 0 0 2T/ac last yr
Half field 6.3 1 4 7 20% Excessive 50 0 0 2T ac/2 yrs ago
Archies 5.3 0 3 7 22% Above target 80 0 0 never limed
Dipper 5.8 0 4 7 24% Excessive 80 0 0 never limed
5 Gates 6 0 4 7 19% Excessive 80 0 0 2T/ac last yr


Any ideas as to why the Mg might be so high?

All input welcome.

pedigree 6

I'm not sure you have the full report up there.
That one is very hard to make out.

Say for the Craic what is the Mg and Ca of the first field?

Username John

Have a read of the Grass Measuring thread Antrim

http://www.boards.ie/vbulletin/showthread.php?t=2057691891&page=7

I have the same issue of being low in P

Waffletractor was very helpful, with some suggestions...

Who2

If I'm reading it right, most of your grounds low in lime, is get that sorted first. I spread some straight p a couple of years ago and have been topping up with pig slurry mixed with cattle slurry, it's made a serious difference. There are a few specific fertilisers out there that should help either, I wouldn't worry too much about being high in k it's easier take it down than build it up.

AntrimGlens

pedigree 6 wrote: »

I'm not sure you have the full report up there.
That one is very hard to make out.

Say for the Craic what is the Mg and Ca of the first field?

Pedigree6,
full report attached.
P index mostly 0 or 1
K index mostly 3 or 4
Mg index mostly 6 or 7
Extractable Ammonium Nitrate (Ca) is between 3220 and 4051

this is causing me the confusion as high or excessive extractable Ca would indicate a high pH, however pH is mostly 5.8- 6.3. below the 6.5 optimum for most i know, but they recommend not to apply lime other than to the field which is 5.3.

who2
did you see a quick response to going with straight phosphate por did it take a season for the roots to take it up.

I was planning going with Straight 27%N for first grazing and then some 16% Superphosphate with some N.

Green farmer

Is it possible the low ph is locking up P ?

pedigree 6

Is the soil a Peaty Gleyed Podzol?

Who2

AntrimGlens wrote: »

Pedigree6,
full report attached.
P index mostly 0 or 1
K index mostly 3 or 4
Mg index mostly 6 or 7
Extractable Ammonium Nitrate (Ca) is between 3220 and 4051

this is causing me the confusion as high or excessive extractable Ca would indicate a high pH, however pH is mostly 5.8- 6.3. below the 6.5 optimum for most i know, but they recommend not to apply lime other than to the field which is 5.3.

who2
did you see a quick response to going with straight phosphate por did it take a season for the roots to take it up.

I was planning going with Straight 27%N for first grazing and then some 16% Superphosphate with some N.

Results nearly straight away.

Stopitwillya

I would definitely have to agree with that alright.