horse manure vs multipurpose compost - growing seedlings

Discussion in 'Planting, growing, nurturing Plants' started by Raf, Feb 24, 2016.

  1. Raf

    Raf New Member

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    Hello,

    I'm doing comparison test between seedlings growing in 8 months old horse manure and the regular multipurpose compost.
    I've planted clover, lupin, nasturtium, mustard (Horse manure on the left and multipurpose compost on the right).
    What I've noticed is slower growth in horse manure and lower germination rate for all plants (might be because it is lumpy).
    I'm yet to do ph test of both but what I wonder is why nasturtium and mustard have red/purple stems and outline of leaves, do you think it might be some kind of deficiency like phosphorous ?

    https://s14.postimg.org/nc0oip1dt/IMG_20160221_072943.jpg
    https://s28.postimg.org/y92tzes31/IMG_20160221_072831.jpg
    https://s21.postimg.org/rbu9tdpav/IMG_20160221_072845.jpg

    Thanks



    https://www.youtube.com/c/RafsKitchenGardenChannel
     
    Last edited: Feb 24, 2016
  2. Flatland

    Flatland Member

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    interesting. As far as deficiencies go, horse manure varies depending on what the horse is eating. A horse being fed mineral supplements would have very different manure than a horse grazing poor pasture with no supplements.
     
  3. Raf

    Raf New Member

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    Thanks for the answer ;) I've been more and more puzzled by this, it seems that symptoms indicate lack of nutrients but might be caused by to many nutrients...not sure why is that need to learn more about it. I also have noticed the leafs are purple underneath.

    https://s10.postimg.org/k1t6tbuvd/IMG_20160224_200401.jpg
     
  4. Mirrabooka

    Mirrabooka Junior Member

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    Could the various antibiotics used on the horses, and the herbicides used on the horse feed, be impacting upon the microbial activity in the horse manure?
     
  5. Flatland

    Flatland Member

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    Answer - Yes
    It is well known that certain wormers used on horses will kill dung beetles. There is a lot of work being done at the moment in Australia to get animal owners, particularly horse owners to worm their animals with products that don't kill dung beetles, and when these products can not be used to take other measures to protect the dung beetles. Anything that goes into any animal has to come out some way
     
  6. Raf

    Raf New Member

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    Thanks , I really hope these are not contain herbicide as I already spread it on all plot. Also this horse manure has been used by all people on the allotment site including allotment manager who have his plot so will keep an eye how everyone are doing and if their growth is also impacted.
     
  7. Flatland

    Flatland Member

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    I wouldn't worry overly about herbicide in the horse poo. The horse would have to be eating really heavily sprayed feed to get enough herbicide into them to poop out enough to do anything to your land. And then the horse would probably get sick. Wormers can have an effect on dung beetles because the dose of wormer to kill worms in a horse has to be quite large and given in one hit, so a lot comes out in one hit and of course the dung beetles are only eating dung so they get the hit., and being much smaller than a horse the dose to kill a beetle is tiny. Anything in the horse poo used in a garden site would be fairly dilute. I've used horse poo in my garden for years and haven't ever had a problem. But if you want to be a purist I guess you would have to source your poo from an organic horse person.
     

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