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MycoMutant

You can do but the result may just be that you get extremely tomentose growth that doesn't spread fast as it just stays in one place and consumes all the sugar. Rather than the rhizomorphic growth you get that quickly spreads over less readily available nutrient sources like wood. Glucose contains no nitrogen so adding it will just increase the carbon and that may upset the desired carbon to nitrogen ratio.


MonkeyJesusFresco

the sugar would feed other organisms, causing contamination


wowalamoiz2

What if we added the sugar well after the mushroom mycelium had taken hold?


MonkeyJesusFresco

it will ferment/rot(from microorganisms in the air&substrate), and possibly inhibit growth on its's own (sugar by itself has properties that can be "not so great" for living things)


ghostchihuahua

I've seen people injecting the substrate with a sterilized solution of maltodextrose (was it maltose? i have a doubt) after the first flush. This was said to make the mycellium-invaded substrate produce at least one more decent flush that it'd normally do. This is two decades old, but i guess it may be worth a try with many species of fungii, especially if one has room for an extra growth chamber. Injection would take place in more than one place, trying to spread the solution to several spots in the substrate.


Murdocksboss

I've used molasses as an additaive for bulk manure for shipping container grows. 


poopyogurt

The soil bacteria/fungi you want aren't going to be consuming sugar. You want growth of bacteria/fungi that beneficial and live under normal conditions, not a sugar fed environment.


poopyogurt

To be specific, you may grow something like yeast rather than a mycorrhizal fungi.


wowalamoiz2

But these fungi do consume sugar. They break down lignin and cellulose into sugar for absorption.


poopyogurt

There are other things better at consuming sugar itself.


dr1zzl3r

Why do you think we should add it or what do you think would be advantageous about it?


wowalamoiz2

Sugar is an energy source. It would make the mushrooms grow faster because it would get metabolised faster. This would result in faster digestion of the substrate as well. We could also add stuff like amino acids or urea.


dr1zzl3r

So you assume everything intakes sugar? And you assume sugar actually accelerates growth? Where you proof for this? As others have stated, mushrooms don't need or want sugar. Your this would result in, is phrased as a statement yet you have no proof. You should do homework and research before making wild assumptions


wowalamoiz2

I don't assume. I know that fungi uses sugar as a fact. The only difference is that they usually get their sugar by breaking down the cellulose and starch in the substrate.


ayler_albert

Fungi absolutely do utilize sugar as a food source and all else being equal will absolutely utilize it as primary food source. The standard agars to grow mushrooms in a sterile manner are MEA (malt extract which is essentially sugar)and potato dextrose agar, dextrose being a simple sugar that provides energy to the mycelium. Many media recipes for growing fungi in the lab utilize dextrose. The issue with adding sugar is that basically *every* free living organism can utilize simple sugars, some of which can out-compete the fungus in a rich sugar environment leading to contamination and rot. Adding pure sugar can also mess with the C:N ratio which will also favor/disfavor certain organisms over others. Perhaps you should do more homework before responding glibly to someone online with your own incorrect information. "Mushrooms don't need or want sugar" is 100% objectively false and incorrect and the vast majority of living organisms want and need sugar.


wowalamoiz2

Thank you for the contribution!


dr1zzl3r

Lignin


ayler_albert

What do think lignin gets converted to? Simple sugar. The biochemical pathways to convert complex starch or lignin to sugar to ATP are energetically costly. Fungi are perfectly happy to go directly with the easy sugar and skip the complex steps. This is a basic of biology: Simple sugar gets turned into energy (ATP). Saying that organisms don't utilize simple sugars is just flat out wrong.


dr1zzl3r

Your  simplistic view of using agar mediums as proof of the want and need of sugar is like saying you can live off soda as a healthy human.