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This develops fruit and flowers.
Brighter colours and improved keeping qualities are the result of sufficient supplies of potash.
It also toughens up plants making them more resistant to disease, and can help to counterbalance any excess of Nitrogen. Potash plays an important part in the formation of sugars and starches which can be stored by the plant in swollen roots e.g. Dahlia, Turnip.
| Potash Deficiency
A deficiency of Potash shows first as yellowing of the leaf margins, these may later go brown and scorched looking. Sometimes scorch shows up as leaf spotting and often starts at the base of the plant. In severe cases the whole plant can collapse and die. |
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Excess of Potash
An excess of Potash is also bad for plants since this can cause too much water to be absorbed by the plant, giving reduced frost resistance. |
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How plants get their food | Nitrogen | Phosphate | Potash | Brand name fertilisers and mixtures | When to use fertilisers | Food values of different manures and fertilisers
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Copyright © 1998 Fred Moor