N Sensor

Discussion in 'Cropping' started by Banana Bar, Nov 30, 2018.

  1. Clive

    Clive Staff Member

    Location:
    Lichfield
    Most planes fly in or above cloud

    I’m no expert though but wasn’t aware of any issue this year using it over all N applications
     
  2. I also am no expert, but having worked in broadcast radio and having a step father who worked in broadcast TV, i'm aware that rain and cloud does effect signals, it does depend on the wavelengths used, but moisture in the air can severely hamper signals.
     
    Clive likes this.
  3. Tom H

    Tom H Member

    Location:
    Vale of Belvoir

    So you tell it nothing other than application number, growth stage , fert strength and yield potential? No rate imputed from yourself? OSR and wheat etc? How quickly can you get an up to date "picture"?
     
  4. Clive

    Clive Staff Member

    Location:
    Lichfield
    you don't have to tell it any of that ! - the remote sensing in combination with the agromnic modelling knows growth stage, plant number, yield potential etc - it was pretty good at working out all those when we ground truthed to check last year

    The only data you give it re the crop is drilling date

    to create a plan you tell it what strength product your using of course yes

    Can get a "picture" twice daily if you like ODR and what only so far but I think Barley might be available this next year

    Makes N sensor look like old tech TBH plus its a 3d plant biomass model you are basing applications on not just a 2d picture of canopy
     
  5. Iben

    Iben Member

    Location:
    Fife
    Slightly off topic, how did you get on with the yield prediction model? Was it anywhere near accurate?
     
  6. Clive

    Clive Staff Member

    Location:
    Lichfield
    Very good on OSR (almost 100%).

    Ended up a bit out on wheat but it was an unusual season where we lost yield late - still ofrederd the fields well though ie best field and worst etc

    Overall pretty good and I expect it will onporve as the get more data to model
     
    Iben likes this.
  7. matttargett4

    matttargett4 Member

    Who provides the sar imagining agronomy? Sounds interesting, Couldn't find much other than research papers.
     
  8. Mounty

    Mounty Member

    Location:
    Suffolk
    Presumably its Agrii as they bought IPF who supply the imagery.
     
  9. snarling bee

    snarling bee Member

    Location:
    Bedford
    All the studies and trials I have seen indicate that 220kg N ha on a (feed) wheat crop is the right number irrespective of most other factors. The curve is also very flat, i.e. if you are a bit light or heavy with the N then the margin will not significantly alter.
    So what are you guys trying to do? Reduce the N on the best bit of the field to even up the crop at the expense of total yield? Increase the N on the poor bits that will never yield? Are you Robin Hood or King John? Can you predict crop requirement accurately when there is still 4 months to harvest and who knows what the weather will do? The SMN varies wildly every square meter, how accurate can you be? 2m tramlines? And all the trials and algorithms are from a fertiliser and sensor supplier, so must be true then!
    I do VR seed, P, K, Mg and lime (which all has limitations); call me old fashioned, but I cannot see the reasoning for VR N except in exceptional circumstances.
     
    Fromebridge, warksfarmer and AndrewB like this.
  10. ajd132

    ajd132 Member

    Location:
    Suffolk
    I cannot see the point in anything VR apart from seed.
     
    warksfarmer likes this.
  11. snarling bee

    snarling bee Member

    Location:
    Bedford
    Not even lime. They were VRing that decades ago, long before the advent of digital maps.
     
    Mounty and Brisel like this.
  12. ajd132

    ajd132 Member

    Location:
    Suffolk
    Okay lime! But I don't have any faith in the variable p,k,mg. seems abit of a gimmick and not convinced by the science behind it.
     
    i dont belief it likes this.
  13. Andrew K

    Andrew K Member

    Location:
    Essex
    I can see some merit in VR if it actually evens out indices across the field AND it saves a tidy amount on inputs. Blanket treatment isnt necessarily good.
     
  14. Piggy

    Piggy New Member

    Location:
    Nottinghamshire
    How do people using the n-sensor apply there sulphur. We would normally apply sulphur nitrogen 1st dressing on all cereals then straight n. On rape normally apply Singletop 1st and 2nd dressing then top up with N. Would the better areas of the field suffer from not enough sulphur being applied
     
  15. Mounty

    Mounty Member

    Location:
    Suffolk
    AS flat rate on first pass to get all of your S on. VR nitrogen only on next 2 doses.
     
    Thomas Simpson likes this.
  16. Brisel

    Brisel Member

    Location:
    Dorset
    The best way to manage that would be if you used an N+S product for your last dose when you're feeding the better areas more. Can you use Single Top as your last dose & use straight N for the second pass? Every kg of sulphur ought to go with 3-5 kg of N in an ideal world. The N:S ratio varies with crop and soil type.
     
  17. fudge

    fudge Member

    Am Sul best value. Stick a bag of that on mid season.
     
  18. warksfarmer

    warksfarmer Member

    Personal view is up towards 100kg/ha so3 is now needed but getting that on is hard work as most sulphur based liquids are low content.
     
  19. Brisel

    Brisel Member

    Location:
    Dorset
    You need to examine liquid fertiliser options better before posting. You can have a number of varying sulphur contents.

    upload_2019-1-10_10-33-25.png
    https://www.yara.co.uk/crop-nutrition/fertiliser/liquid/

    Omex, BFS etc have a similar range.
     
    RFR likes this.
  20. warksfarmer

    warksfarmer Member

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