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Onions and manure

• Message 1. 

  Posted by Ian W (U8604472) on Sunday, 3rd October 2010

  A recent posting said not to plant onions where the plot had been manured but my 4 year rotation plan says to plant alliums and potatoes in the same bed so I was going to include lots of manure over the next few months. Any advice please on the onion front.

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• Message 2

  , in reply to message 1.

  Posted by Barny (U13453961) on Monday, 4th October 2010

  Surprisingly manure can actually deplete the available nitrogen in the soil as the N is collared by the bacteria involved in the decomposition process.But bung on lots of manure and Go ahead as follows. I used to grow big onions for ex. at one time and made a scientific study of onion growing.They prefer a higher pH than spuds so you could test if you feel like bothering. A neutral soil is ideal so you might find a bit of lime will suit but don't lime and manure at the same time. Just before planting in the spring give your ground a dressing of Nat. Growmore(just an oz or 2oz/sq.yd.) 7-7-7.Onions in particular respond well to the immediately available nitrogen and actually also need the sulphur in the sulphate.Then later in the growing season your unions will pump up to a good size as the nitrogen from your manure is be released as those decomposition bacteria will finally have done their job.
  PS. Onions seem to do especially well in a raised bed.

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• Message 3

  , in reply to message 2.

  Posted by snakey75 (U3915327) on Monday, 4th October 2010

  I've been using bark chippings in my chicken run and wondered if i would be able to use the "used" bark as mulch in my raised beds in the allotment and specifically around my Japanese Onion sets.
  
  All ideas welcome
  
  Ta v much
  
  Snakey

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• Message 4

  , in reply to message 3.

  Posted by Barny (U13453961) on Tuesday, 5th October 2010

  I would n't use wood chippings,bark,etc until they had rotted down thoroughly which will take a long time/--many years?.

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• Message 5

  , in reply to message 4.

  Posted by Ian W (U8604472) on Tuesday, 5th October 2010

  Thanks Barny that's really useful info.

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