WHY COMPOST OR H/POO IS BETTER THAN OTHER SUBSTRATES

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agar
old hand

Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else

WHY COMPOST OR H/POO IS BETTER THAN OTHER SUBSTRATES

1
#4532477 - 08/14/05 03:58 AM (21 years, 2 months ago)

WHY COMPOST OR H/POO IS BETTER THAN OTHER SUBSTRATES.

Some use Rye grain, WBS, wheat straw, BRF/Verm (cakes) as a "substrate" Some use combinations of those materials.

Others use "BULK" substrates, I., E, compost, h/poo, or manure/wheat straw combinations (quasi/compost).

It is generally accepted that P. Cubensis grown out on "BULK" substrates have far higher yields, and greater potency than other lesser substrates.

HERE IS WHY "BULK" SUBSTRATES ARE FAR BETTER.

Straight Grain, WBS, Wheat straw, BRF/Verm or combinations of those DO NOT contain dead cells of thermophilic microbes, various bacteria, and actinomycetes "firefang", which are the very things that deliver OPTIMAL protein, fat (lipids) & micro-nutrients components (Chitin - for instance) to the mushroom.

Bulk substrates, on the other hand, contain a very high percentage, and variety those benifical (dead) microbes.

Moreover, lesser substrates contain very little nitrogen, while Bulk substrates contain significant amounts of nitrogen.

A positive correlation of substrate nitrogen and yield has been well proven in commercial edible?s cultivation. The greater the nitrogen content (up to a certain point), the higher the yield. And, in the case of P. Cubensis (arguably) delivering far higher potency.

Furthermore, there is the matter of "digestibility".

P. Cubensis excrete a complex array of genetically predetermined enzymes in order to digest substrate nutrients. Those enzymes degrade nutrients into simple soluble forms of sugars, amino acids, lipids & micro-nutrient components which are easily absorbed into the mycelia network, thereby producing optimal yields under good environmental conditions.

Optimal Bulk substrates (1. compost, 2. h/poo & 3. quasi-compost manure/wheat straw combinations) are highly biodegraded. Excepting the wheat straw component in 3 above. However, the manure content of manure/wheat straw combination, impart makes up that deficiency.

Consequently, Bulk substrates have an optimal biodegraded composition, which holds moisture, and is easily digested by the mycelium network, giving it the ability to produce optimal yields, given good environmental conditions.

Conversely, lesser substrates are not generally biodegraded in any way. Which means a mycelium network has to work harder to emit more extracellular enzymes to degrade that material into digestible form. Which is most often not as nutritious as Bulk substrates - overall.

Some will argue that, things like BRF, Rye, WBS is easily digested by mycelium.

In the cased of BRF, it is a fact that BRF type PF cake jars, colonize much slower that do seed/grain spawn. Why is that? Answer, the nutrient composition is not optimal.

Ideally prepared seed/grain spawn jars generally colonize quickly. However, that is somewhat deceptive. As, while the seed grain exterior is colonized rather rapidly, it takes much longer for the mycelium to actually penetrate to the interior of the seed grain, and digest the nutrients there.

That is why seed/grain spawn is considered to provide delayed release nutrients, to a Bulk substrate. And/or why sterilized grain additives (SpawnMate for instance) are added to a Bulk substrate (as a delayed release nutrient) at the same time colonized seed/grain spawn is.

What it all comes down to is, Rye, WBS, BRF lack significant - quickly digestible fiber & nitrogen, as well as beneficial (dead) microbial content.

Wheat Straw (uncomposted) lacks nitrogen, (dead) microbial content, is high in fiber, but because it is not biodegraded, is consequently difficult for mycelium to digest. Nor, will it hold an optimal moisture content, over any extended period.

Plainly stated, certainly various individual nutrients are effective, and will produce fruits. However, it takes a high degree of diversity, biodegraded fiber, airy texture composition, and the ability to absorb, and hold a high degree of moisture, for a substrate to be optimal.

For instance, sugar is a nutrient. However, If YOU had only sugar to eat, it would have adverse affects on you. The same goes for mushrooms.

Mycelium requires a diverse diet, high in numerous types of nutrients, with a certain texture, composition, moisture absorption & retention capacity ? to be OPTIMAL.

Anything LESS than OPTIMAL will result in adverse effects, and poor to mediocre yields.

That is why the BULK substrates referred to above are FAR BETTER than the lesser substrates mentioned.

:rolleyes:

Bong hit four. :stoned:

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