Gypsum speeds up mushroom growth in sawdust mix (2024)

Gypsum speeds up mushroom growth in sawdust mix (1)

Gypsum is a mineral that helps speed up the mushroom growing process in small amounts.

A teaspoon of gypsum is added to the supplemented sawdust mix, which also includes hardwood sawdust pellets, wheat bran and water. We use this mix forfive types of mushrooms, including the Lion’s Mane, Chestnut and Shiitake mushrooms.

Gypsum has been found to shorten the time it takes for the mycelium to grow throughout the substrate, according to researchers at the University of Putra Malaysia. That means it’s quicker for the spores to grow throughout the growing block and start to grow mushrooms.

The researchers tested different alkaline materials, such as gypsum, agricultural lime and zeolite, another type of mineral. Only one percent of each mix included an alkaline material. They grew Italian Oyster mushrooms, which we choose to grow using hardwood sawdust and soybean hulls because of their protein content.

It took 30 days for the mycelium in the gypsum mix to spread throughout the block – 18 days quicker than the lime mix and 20 days faster than the zeolite mix. Primordia, or baby mushrooms, started growing the quickest on gypsum mix as well.

Gypsum speeds up mushroom growth in sawdust mix (2)

Gypsum is supposed to help the ingredients mix in the bag without clumping. That makes it better for the mycelium to get the nutrients it needs in the bag to continue spreading. Gypsum also adds calcium and sulphur, which are supposed to neutralize the pH levels of the block, according to researchers in Pakistan. Mushrooms prefer slightly acidic pH levels, but increasing the pH with the gypsum helps prevent bacterial growth.

If you’re interested in trying to grow mushrooms in a mix with gypsum, take a look at our JCB Gourmet Mushrooms Grow Kits on our website. Every mushroom except for the Oyster mushrooms uses the supplemented sawdust mix, which includes gypsum powder. Black King Oyster mushrooms also grow on the supplemented sawdust mix.

Gypsum speeds up mushroom growth in sawdust mix (2024)

FAQs

Gypsum speeds up mushroom growth in sawdust mix? ›

Gypsum is a mineral that helps speed up the mushroom growing process in small amounts. A teaspoon of gypsum is added to the supplemented sawdust mix, which also includes hardwood sawdust pellets, wheat bran and water.

How much gypsum do you need for mushroom substrate? ›

How to Use in Substrates: Add Magical Gypsum to your CVG, Manure or other substrate at a ratio of between 5-10% dry weight - we recommend 10%.

How to speed up mushroom growth? ›

To initiate fruiting, lowering temperatures and increasing oxygen levels generally encourages mushroom formation. Initiation can be in the form of cold shocking, water shocking or introducing more oxygen by cutting a hole in the bag. them with water as if in a strong rainstorm.

What is the best additive for mushroom substrate? ›

Nitrogen is a basic building block of proteins and is therefore critical to mushroom growth. Common nitrogen supplements include soybean meal, cottonseed meal, and corn meal in addition to soybean hulls, wheat bran and oat bran which are also rich in carbohydrates and B vitamins.

How much gypsum to add to grain spawn? ›

For ten jars, I like to use about a tablespoon of gypsum and a cup of coffee. Let the grains soak for 12 -24 hours. This will allow the grains to absorb water, and will cause many contaminants to sprout, making them more susceptible to being killed through sterilization.

How much gypsum should I add? ›

It's important to avoid over-application of gypsum, but in most cases, you can apply 40 pounds of gypsum to every thousand square feet of soil at any time of the year. That number will be a little lower — about 20 to 30 pounds per every thousand square feet — if you plan to plant flowers, shrubs or vegetables.

Does gypsum help mushroom growth? ›

Gypsum is a mineral that helps speed up the mushroom growing process in small amounts. A teaspoon of gypsum is added to the supplemented sawdust mix, which also includes hardwood sawdust pellets, wheat bran and water.

How do you trigger mushroom growth? ›

Fresh air, humidity, light, and temperature are the four main environmental variables that trigger fruiting from fully colonized substrates.

What promotes mushroom growth? ›

High humidity is crucial in ensuring proper mushroom development, plus it also helps to prevent the substrate from drying out and maintain the appropriate moisture content. However, excessive moisture can cause the substrate to become very wet, increasing mold growth.

How can I make mycelium spread faster? ›

Light: While mycelium doesn't require light to grow, a small amount can help stimulate growth. 5. Nutrition: Using a nutrient-rich substrate can also enhance growth. Remember, it's important to maintain sterile conditions to prevent contamination.

What supplements increase mushroom yield? ›

Supplements such as wheat bran have been used as a source of carbohydrates and nitrogen to the main substrates [20], since most of the substrates do not have enough nitrogen required by mushroom [21]. Hence, it has been established that wheat bran supplement improves yield/productivity of P. ostreatus mushrooms [18].

What is the most nutritious mushroom substrate? ›

Manure-based compost is a good substrate for growing mushrooms because it is high in nutrients and provides a good environment for mushroom growth. However, it is important to use manure that has been properly composted to kill any harmful bacteria or mold.

Can you use too much gypsum? ›

If you use too much gypsum, you could potentially remove essential nutrients from your soil, such as aluminum, iron, and manganese. Though gypsum is a great product, it doesn't perform miracles on its own.

How long does gypsum take to set? ›

Pro-BASE® gypsum has an average initial setting time of 16 minutes and 17 seconds, with a final setting time of 24 minutes and 31 seconds.

Does gypsum increase yield? ›

In conclusion, gypsum improved the growth and yield by relieving the toxicity of oxalate and facilitating the acidification of sawdust medium. KEY POINTS: • L. edodes excretes oxalic acid to acidify the ambient environment for growth. Soluble oxalate is toxic to L.

What is the ratio for gypsum? ›

A mixture of 1kg of water to 1.5kg of gypsum plaster, for example, can be expressed as 2 parts water to 3 parts plaster, or a 2:3 ratio. Usually, the equation is expressed in terms of 100 parts of plaster. The 2:3 ratio would then become 67:100.

What is the ratio of mushroom substrate mix? ›

We suggest following the Coco Coir Mushroom Substrate Recipe, which is 1:1:1 by volume of peat moss, vermiculite, and coconut coir mixed with 10-15% of cow manure or horse manure.

How much lime do I add to mushroom substrate? ›

Substrate may also be treated to reduce potential fungal or bacterial contaminants. Two common methods of substrate treatment include: Cold water with hydrated lime: Mix 6 grams of hydrated lime for every 1 gallon of water. You may need to add more or less depending on the pH of your water.

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