2013 Onion Growing Challenge

Discussion in 'Edible Gardening' started by Freddy, Oct 7, 2012.

  1. JWK

    JWK Gardener Staff Member

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    I don't think mine are looking too healthy, the tips are going brown. I wonder if I have them too close to my grow lamps. I'll move them away a few inches just to be safe. What do you all think?

    20130119-IMG_7399.JPG
    Sorry a bit of a poor photo, I'm trying to show my set up inside the greenhouse, and how close the growlights are.


    20130119-IMG_7400.JPG


    20130119-IMG_7415.JPG
    This close up shows the brown tips.

    Should I be worried?


    Maybe I should be pricking them out now as well?
     
  2. Freddy

    Freddy Miserable git, well known for it

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    Hiya John.

    Obviously there's something not quite right, but personally I wouldn't be too worried. Indeed, I've had something similar where the tips turned white but they went on to produce as normal. It's a bit difficult to see exactly your lighting set-up, but it looks like you're using fluorescent? As you know, they produce very little heat so I wouldn't think that proximity is an issue, heat-wise. Maybe a bit more humidity? Just guessing:dunno: My (limited) view is that no harm would be done by potting them on now. I've potted up mine when at the same stage, and they were fine:blue thumb: Maybe turn the heat down a bit:dunno:

    Dunno if this helps, it's just my thoughts:)

    Cheers...Freddy
     
  3. JWK

    JWK Gardener Staff Member

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    Hi Freddy,

    I hadn't thought about humidity, it's been around 35% - I wonder of that's too low.

    I'm using the Lightwave T5 4 tube system. Bought it last year and it was a great success, but that was indoors where I could keep a close eye on it. It doesn't throw out too much heat, last year I had tomato seedlings within a couple of inches of the tubes without trouble.

    [​IMG]
     
  4. Freddy

    Freddy Miserable git, well known for it

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    Hiya John.

    35% sounds pretty low, so it might be something to look at. I always think that plants are at their happiest when in their natural environment, and outdoors the humidity is quite a bit higher, I think.

    The lighting rig looks a good one, so no issues there I reckon:blue thumb:
     
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    • JWK

      JWK Gardener Staff Member

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      I've been thinking overnight (dangerous I know) and maybe I'm worrying over nothing, the brown tips are probably where the seed cases have been, some 50% of my seedlings still have the old seed case attached. I'll wait and see what the true leaves look like when they emerge.

      Humidity is 40% this morning, I'm having second thoughts about increasing it in case it encourages fungal diseases. The rest of my greenhouse is packed with over-wintering tender plants (bananas, cannas, Brugs, etc), it's 83% humidity in that part of the ghouse and the old dead leaves and damp roots may cause me even more trouble.

      So I've talked myself into doing nothing, I like that! (Except sweeping the snow off the roof as Loli says in her other thread).
       
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      • Vince

        Vince Not so well known for it.

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        No need to worry John, the only parts affected will drop off in due course along with the seed cases! perfectly natural, mine are doing the same, get ready to prick out when the weather warms up!
         
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        • JWK

          JWK Gardener Staff Member

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          OK, thanks Vince. I'll be ready!
           
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          • Lolimac

            Lolimac Guest

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            I've sown a few more Mammoth Giants...just to be on the safe side:dbgrtmb:
             
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            • Phil A

              Phil A Guest

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              Again, I love it when you talk dirty:biggrin:

              Got mine under a blub, they seem to like it.
               
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              • Freddy

                Freddy Miserable git, well known for it

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                Hello chums:)

                To those of you that are using lighting, I thought it might be interesting/helpful if you could please tell us how long you are lighting for and your timings. Maybe add your conclusions, if any.

                I don't wish to be picky, but I thought it best to draw attention to 'guideline' 3, ref post #68.

                Cheers...Freddy
                 
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                • Scrungee

                  Scrungee Well known for it

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                  Isn't it all seed sown onions that Rule 3 applies to - the requirement to post pics of seed sown onions at crook stage?

                  So far I've only seen pics of:

                  1) JWK post #241 19/1/2013 & #165 5/1/2103
                  2) Lolimac #231 18/1/2013 & #163 4/1/2013
                  3) Scrungee #174 7/1/2013 &#143 1/1/2013

                  I'm up to 10 hrs/day with lights but anxious for things to warm up a bit outside so I can get my onions under lights somewhere cooler such as my greenhouse.
                   
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                  • Freddy

                    Freddy Miserable git, well known for it

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                    Yes, quite right. Rule 3 applies to seed grown. Like I said, I don't want to be picky, and tbh, i hadn't really checked who had posted, but thought it best to mention it:blue thumb:

                    10 hrs eh? What time do you 'light up'?
                     
                  • Scrungee

                    Scrungee Well known for it

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                    From when Economy 7 starts at Midnight until 7:00 and a further 3 hours until 10:00 am, to take advantage of the cheap overnight tariff and a bit beyond so I don't need to turn the room light on when I water them of a morning. This will be upped to 12 hrs in the growbox & 12 outside when I get my box in the greenhouse going.

                    P.S. I'm going to plant some of the nice, big sets they've got at Morrisons for £1 for 40 for the growing from sets part of this challenge.
                     
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                    • Freddy

                      Freddy Miserable git, well known for it

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                      Thanks for that:blue thumb:


                      I normally plants sets, just in case my seed grown fail for some reason. I can't afford the space this year, as my attempt to grow a record breaker (:heehee: ) means that one of my raised beds is taken up by 18 Kelsaes. Having said that, I doubt I'll bother with sets again, as last year they were no bigger than the size of a golf ball! I shouldn't be surprised though, my seed grown always out-perform my sets. A bit more messing around with seed grown, but a better harvest:)
                       
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                      • Scrungee

                        Scrungee Well known for it

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                        But I've got almost unlimited space for growing, although I mainly thought it might be a useful tip for those who might want to go for the set category of this competition as it would only cost £1, and not involve nearly as much effort/expense/hassle as from seeds, but still be a bit of fun and provide a useful crop.
                         
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