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What's making ley look sick?

Discussion in 'Livestock & Forage' started by Mac10, Aug 12, 2018.

  1. Mac10

    Mac10 Member

    Location:
    South East
    This could be embarrassingly simple, but I'm a novice grass grower, so bare with me.

    Put a ley down in 2016 that yielded well for first cut then come second cut had developed orange growths on head and stem, which eventually led to the stem dying. Leaves also had blotches. This year the ley is weak but is unaffected.

    Put a different ley down last Autumn, different seed, but the same has happened. Strong first cut, strong regrowth but regrowth is suffering as the previous ley did. Affecting ryegrass the most, with some effect on the Timothy in the mix. Neighbours ley the other side of the fence is totally unaffected.

    Anyone more learned able to confirm what it is/what action to take?

    Cheers image1 (6).jpeg image2 (2).jpeg image4 (1).jpeg image3 (3).jpeg
     
    Last edited: Aug 12, 2018
  2. kill

    kill Member

    Location:
    South West
    A break crop of brassica or corn between leys may well have helped
     
    Mac10 likes this.
  3. Crown rust. You won't prevent these no matter what rotation you have, they are airborne, likely been encouraged by the recent shift in weather. Different varieties of grass have differing resistance to these diseases hence the reason we use grass mixtures. I am not sure of the science but I believe physiological stress weakens the plant and often outbreaks result. If a lot of the foliage is bad you are best to top it off or graze it off if you can, then feed the grass to encourage fresh and stronger growth.

    In seed crops or turf etc fungicides can be used but I doubt they would be worthwhile in a commercial ley.

    Basically, keep leys well fed and hope they shrug it off.
     
    Kiwi Pete and Mac10 like this.
  4. davidroberts30

    Location:
    pembrokeshire
    Rye grass seed heads here have rust on it
    All the leaf is clean at the mo
     
    Mac10 likes this.
  5. Mac10

    Mac10 Member

    Location:
    South East
    Thanks for that! I put it down to the increased amount of wet and foggy weather last year, but was a bit surprised to see it after such a long drought this time around.
     
  6. Diseases are just plain weird, the recent drought obviously would have stressed the grass, throw in some rain hitting the very warm ground and you have a lot of humidity about at low level.
     
    Kiwi Pete likes this.
  7. Can u graze and then give a shot of N? We get this a bit next to coast...

    Ant...
     
  8. Boysground

    Boysground Member

    Location:
    Wiltshire
    When i first started farming we had an agronomist who was keen on treating crown rust. Used fungicide for a couple of years but never saw any noticeable difference in production and as the crop was never weighed it was unlikely. We definitely have bad years for it, this year has not been one.

    Just note that I used the chemical 25 years ago and there may well be nothing with Grass on the label now, I havnt looked recently.

    Bg
     
  9. Deutzdx3

    Deutzdx3 Member

    There are a lot of nutrients being washed out with the recent weather. Maybe a ph test to see what to feed the grass to make it health and strong. You can get basic ph tester for cheap to indicate wether it’s acidic or alkaline. No need for agronomist.
     
  10. Crown rust, there are plenty of resistant varieties, you should get a copy of the recommended list. Dont let anyone sell you a ley with low resistance varieties in it. Simples!
     

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