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Soil Test Results -Recommendations?

  • 16-03-2012 2:27pm
    #1
    Registered Users, Registered Users 2 Posts: 1,207 ✭✭✭


    Apart from the ga-jaysus amount of lime needed
    my quick interpretation is 1 bag of potash and
    1.5 bags of Superphos an acre.

    Feel free to criticise and come up with better answers

    Thanks In Advance


    PS
    It'll be grazing only for the medium term


Comments

  • Registered Users, Registered Users 2 Posts: 354 ✭✭Pharaoh1


    Are you in a high molybdenum area?
    You don't want to be overspending on the Lime if it is not required.


  • Registered Users, Registered Users 2 Posts: 718 ✭✭✭F.D


    Good easy to read test result, where did you get it done?


  • Moderators, Society & Culture Moderators Posts: 12,757 Mod ✭✭✭✭blue5000


    Hi OP is it a black, peaty soil? I see the pH is low and OM fairly high at 14%.

    If it is peat and you are only grazing it might be better to go little and often with the P and K. K is water soluble and if you put on a bag of it(50% muriate of potash) in one go a lot could disappear with the first wet day. Something like pasture sward 27,2.5, 5 might be better. Also with a lot of K going on you will lock up magnesium causing grass tetany for milkers or suckler cows. Just my 2 cents.

    If the seat's wet, sit on yer hat, a cool head is better than a wet ar5e.



  • Registered Users, Registered Users 2 Posts: 1,207 ✭✭✭99nsr125


    blue5000 wrote: »
    Hi OP is it a black, peaty soil? I see the pH is low and OM fairly high at 14%.

    If it is peat and you are only grazing it might be better to go little and often with the P and K. K is water soluble and if you put on a bag of it(50% muriate of potash) in one go a lot could disappear with the first wet day. Something like pasture sward 27,2.5, 5 might be better. Also with a lot of K going on you will lock up magnesium causing grass tetany for milkers or suckler cows. Just my 2 cents.


    We're not in a high molybdenum area but I might just double
    check.

    OM at 14% jumped out of the page at me alright, I would
    have been happy with 8%, it's not a peaty soil it's a mineral
    brown earth !

    This particular field hasn't had tillage for decades
    because it's a bit uneven and has a rock outcrop in two places.

    However it is the furthest field from the house, nice and dry all year
    which means dung is always spread on it first because it soaks
    in well and doesn't stink the house out of it.

    There's an even spread of clover in it too and always has been so we just
    stuck with dung for P and K, clover for nitrogen and in recent years
    two bags 18-6-12 because the stocking ratio has been high.

    It looks like we're going to change to two bags of 10-10-20 and half
    a bag of CAN for the next tree years and then retest. 10-10-20 should
    give a nice gently release and excess units of P and K over the 18-6-12.

    We got the soil tested at FBA Labs as has been recommended here
    numerous times (thanks everyone), it was an SR3 soil test with organic matter.
    An SR3 soil test is P, K, Lime requirement and trace minerals.
    An SR2 is P, K and Lime requirement it costs 12.50 inc vat.
    An SR3 soil test is 25.50 inc vat for SR3 with organic matter its 35 inc vat


  • Registered Users, Registered Users 2 Posts: 6,343 ✭✭✭bob charles


    I would just fertilise for the crop off take, index 2 is the target, but not by the fert companies opinion


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  • Registered Users, Registered Users 2 Posts: 454 ✭✭MikeSoys


    Can i get some advice on reading results of a soil sample for P and K
    I got a email with the results (I took the samples myself - some of the fields were .05acre and others about 1ha) and for example the Phosphorus and Potassium results have the data like this


    +---PHOSPHORUS
    ++++ +
    POTASSIUM
    +
    field ID ¦ mg/L ¦ index ¦ ++ ¦ mg/L ¦ index¦
    1 ¦ 3.4 ¦ 2 ¦ ++ ¦ 161 ¦ 4 ¦
    2 ¦ 10.7 ¦ 4 ¦ ++ ¦ 145 ¦ 3 ¦
    3 ¦ 6.9 ¦ 3 ¦++ ¦ 192 ¦ 4 ¦
    If field 1 has a rating of 2 how do I work out how much P it needs (bags of fertilizer kg/ha of P and K) --as where a bag of fert seems to be sold in predetermined percents (like 10:10:20) how can i get the most accurate one for what i need -
    i dont suppose there is a website where i can input my results and it will calculate the bags per ha(KG/HA)????..


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