Growing Spring onions, also Scallions, Bunching onions, Welsh onion

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07 Nov 13 doug dewar (Australia - arid climate)
i have planted onions and spring onions over the top of pea mulch of which has germinated,i have been pulling out the peas so there is no more,i would like to know if i should use sulphate of potash to balance out the high level of nitrogen in the soil.If you could steer me in the right direction as i really don't want to lose my vegies and still want good growth in them,hoping you can help me.regards doug dewar.
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