Trichoderma Harzianum - In Soil

Grow Mediums Soil
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Hey there ILGM community!

I’ve been studying facts about Trichoderma Harzianum and it seems like it’s very beneficial fungi.

I checked the forum and found a little bit conversation here and there so I wanted to put up own topic for T. Harzianum .

Trichoderma Harzianum is a beneficial fungus widely used in agriculture, horticulture, and even hydroponics due to its ability to promote plant growth and protect against soil-borne pathogens.

Trichoderma Harzianum provides plant growth promotion as improved nutrium uptake and root growth stimulation. It also provides biological control of pathogens as antagonistic activity, competition of recources and production of antimicrobial compounds. It provides also induced systemic resistance (ISR) as it enchanses plant’s natural defence mechanisms. It promotes stress tolerance. It also promotes better health in soil and better texture of it.

I’d say this is pretty impressive thing as it can defeat root rot diseases such as Rhizoctonia solani and Pythium. Also increase in yields and root mass would be very nicey effect.

Do you guys have experience with this fungi and what do you think about it?
So its beneficial to plant’s health and growth how does this show up?
If you have tried it, did you experience root rot at all?
Do you see this as beneficial or as bullshit?

Thanks, svleeh

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Not something you want to do if you also grow mushrooms nearby. Trichoderma will ruin a mushroom grow.

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Yep👆, every mushroom grower I know says look out for trichoderma. It ruins your cultures with surprising ease.

Also, it’s in virtually every microbe product on the market. It’s good stuff.

I read it was “discovered” during ww2 in the pacific theater. The canvas tents the military standard issue were set up on a bird island loaded with bird guano. (My grandpa talked about such places during the war where they were bored during down time and would run with the birds and launch them off the cliff like a toy glider for fun.). Anyway, one such island, the trichoderma was dominant and literally ate the tent canvas to compost in just a short time. Everyone scratched their heads and said huh what happened to our tents. The answer was trichoderma.

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Good point. I use a microbe product called Urb and just checked the label. Yup, it’s there.

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