Description
Calcium Hydroxide Lime/Hydrated Lime (Ca(OH)2) for Substrate Cold Pasteurisation in Mushroom Growing
This product, high in Calcium and low in Magnesium, is commonly known as Calcium Hydroxide, Slaked Lime, or Builder’s Lime (Ca(OH)2). It is ideal for cold water pasteurisation of your substrate due to its ability to drastically alter the pH, effectively eliminating contaminants.
Cold Pasteurisation Insight: While pasteurisation kills live organisms, it does not destroy their spores. Therefore, we recommend employing boiling water for a super pasteurisation effect. Post-pasteurisation provides a two-week window before susceptibility to contamination increases. Rapid substrate colonisation within this timeframe is crucial, as a densely populated mycelium provides a strong defence against sporulating contaminants. With this technique, a higher grain-to-substrate ratio is advised; while typically only 5-10% spawn is added to the substrate, we suggest a minimum of 20-25% when using pasteurisation.
Product Benefits:
- Eliminates the need for autoclave/pressure cooker processes in mushroom cultivation.
- Supplements the mycelium with calcium, enhancing growth speed and vigour.
- Ideally used with low-nutritional substrates such as sugarcane mulch, straw, coco coir, and vermiculite.
Your Purchase Includes:
- 50gm or 300gm of Hydrated Lime (Ca(OH)2)
Specifications:
- Chemical Name: Calcium Dihydroxide
- Chemical Formula: Ca(OH)2
- Colour: White
- Appearance: Powder
- Odour: Odorless
- pH: 12.4 (saturated solution at 20ËšC)
- Purity: 95%
- Solubility: Soluble in water
- Other Names: Hydrated Lime, Slaked Lime, Pickling Lime
Instructions: Important: Always use protective gear such as a mask, gloves, and eye protection.
- Soak your substrate in cold or hot water treated with Hydrated Lime for 3-12 hours.
- Drain water and inoculate with your mushroom grain spawn.
Ratios:
- Use specified water amounts to avoid the need to drain excess.
- For every 1 Kg of straw, use 4 litres of water.
- For every litre of water, add 5 gms of Lime.
- Grain Spawn: Inoculate with at least 25% grain spawn (1 part grain spawn to 4 parts substrate) to accelerate colonisation and minimise contamination risks.
Additional Tools: Measure pH levels post-Lime addition with our PH strips available in our store.
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