The correct way to use plant ash as fertilizer
Plant ash is a commonly used fertilizer. It is the residue left after burning plant stalks, firewood, dry branches and fallen leaves, and it is mainly rich in potassium.
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Plant ash is grayish-black or black, contains no nitrogen or organic matter, and only has ash and a large amount of trace elements, of which the most abundant are potassium and calcium. Since the potassium in plant ash is mainly in the form of potassium carbonate, followed by potassium sulfate and a small amount of potassium chloride, and more than 90% of it is soluble in water with high availability, it is an ideal quick-acting potassium fertilizer.
Plant ash is an alkaline fertilizer. It cannot be stored or used together with ammonium nitrogen such as ammonium sulfate and ammonium nitrate, nor can it be stored together with human excrement or livestock manure, otherwise it will cause rapid volatilization of nitrogen and make it ineffective.
Plant ash is suitable for various soils except saline-alkali soil, and is especially suitable for acidic soil. It can be used as a base fertilizer and a top dressing, generally at 50-100 kg per mu, and it should be mixed with moist soil before application, but not with too much water, otherwise the nutrients will be lost.
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In potted flowers, plant ash can be mixed with potting soil in a certain proportion. It not only adds potassium fertilizer, but also makes the potting soil loose and well-drained, which helps rooting. Whether it is soil for cuttings or for sowing seedlings, generally potted flowers can all make use of plant ash.
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