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fert on w crops

Discussion in 'Cropping' started by jpd, Jan 4, 2019.

  1. jonnyjon

    jonnyjon Member

    As far as i know, applying p when the crop uptake is low just means the soil will just lock it up
  2. Brisel

    Brisel Member

    Yes and no. Fertilisers like TSP dissolve slowly but high calcium soils will lock some of it up.
  3. Wouldn't give a stuff. Get on with the job, it's not going anywhere. You will lose nutrients if soil is leaving the field, no disputing that. The time of K application makes no difference.
  4. 4course

    4course Member

    north yorks
    Not so sure ,we have found a positive and cost effective return to K applied as a foliar at around flowering but agree that maintenence levels can more or less be applied any time but personally favour at sowing to help rooting and development
  5. Brisel

    Brisel Member

    Hmm. MOP is potassium chloride, which is quite toxic in concentrated doses.
  6. My WB is half yellow, and half yellower. Can't do much about it though, way too wet to travel with sprayer, or fert spreader, even if I wanted to.:(
    Headless chicken likes this.
  7. silverfox

    silverfox Member

    That’s par for the course in January . I wouldn’t worry about it.
  8. Wind and rain has made the decision for me.
  9. Foliar K: I agree I see value in that but I was referring to K reserves in the soil, more fertile soils hold crops better over winter and keep them more robust IMO.
  10. Warnesworth

    Warnesworth Member

    Chipping Norton
    There’s only one man talking sense there and it’s @andyhoward
  11. Your shout really. If you think the K will leach then hold off. However, if the soil has any clay or OM that will hold on the K and want to get a job out of the way then crack on. BTW I favour the 2nd approach if you didn't notice.
  12. Will be on as soon as it is legal and the land will travel
  13. patrick4

    patrick4 Member

    co dublin. ireland
  14. i dont belief it

    North East
    MOP on OSR today conditions to good to miss putting half on now rest in march.
  15. debe

    debe Member

    On with polysulphate on everything this last few days. Not leaving a mark on ground that will sink a tractor in a wet year. Fear it will be a different story come mid Feb when I want to get the urea on...
  16. David.

    David. Member

    J11 M40
    If things do not alter substantially, and there is no big rain forecast, I shall be looking to get urea on soon as legal.
    There is no ground water here, normally waterlogged land is bone dry, pond water levels which rose before Christmas are falling again. If it stays this dry, we shall be looking at fert granules dry on the surface, and starving crops in April. The leaching of urea is much over rated IMO.
    ollie989898 likes this.
  17. Brisel

    Brisel Member

    Urea is converted to ammonium then to nitrate. Nitrate leaches. Just being pedantic.
  18. Iben

    Iben Member

    He possibly meant volatilisation?
  19. Brisel

    Brisel Member

    Not at this time of year.
  20. Iben

    Iben Member

    No, but then he can't apply it at this time of year.

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