Mycorrhizae Fertilizer

Has anyone used this or other organic fertiliser and does it work? Can it be used (powder) as a rooting compound?

 

@JWK is a big fan of it for his tomatoes.

 

Products containing mycorrhizae are not fertilisers in the conventional sense, rather compounds containing some types of fungi spores which may attach to root hairs in a sybiotic relationship. This is of course only possible where conditions are ambient. It is complicated and if you are interested, I recommmend the work of Dr Elaine Inghams :
https://www.youtube.com/channel/UCSAU5ludwNyqMHBaR1ZfheQ

 

Hibiscus and Brugmansia I got it from Spain, not expensive,
https://www.amazon.es/dp/B0BLCSLXMR/ref=pe_27091411_487029541_TE_SCE_dp_i1
https://www.amazon.es/dp/B076HSTQ3R/ref=pe_27091411_487029541_TE_SCE_dp_i3

 

Thank you @infradig and @JWK.

I am not entirely happy with a couple of the growth on two of my Brugs and a couplr of the Hibiscus. I have done am Epsom feed and a couple of normal (20-20-20 I think) fertilizers so thought I would try this.

I will let you know results.

 

This RHS article is interesting @Victoria. The fungi can be inhibited in cultivated soil by overuse of fertilisers.

Mycorrhizal fungi / RHS

Are your plants in containers or in the ground?

 

Yes cultivation will adversely affect mycorrihzal fungi as they rely on building up a network of mycelia in the ground, so cultivation will disrupt this.
They work by linking the plant into the mycelial network which then shares minerals and other nutrients with the plants in return for carbohydrates.
Two good readable books on the subject are Merlin Sheldrake Entangled Life and Suzanne Simard Finding the Mother Tree and references therein.
I have used them with my tomatoes, however I'm in two minds about continuing as once the tomatoes flower I feed reguarly (as do most people), but this will negate the effect of the mycorrhizal fungi. I'm not sure of the exact reason, but to me it seems that if the plant can get nutrients from fertiliser it will be less "willing" to share it's carbohydrates with the fungi which will seem like a parasite rather than a symbiote.
Outside in the borders it makes more sense as I use little fertiliser apart from blood, fish and bone when planting and once estabilished do little watering of shrubs ect Also cultivation is irregular and mainly restricted to weeding.

 

I used it on toms and peppers last year.
Probably a bit nieve but I was hoping to find some evidence of fungal activity at the end of the season with maybe white fungal treads or the odd toadstool, but nothing was visible.

 

An interesting expectation ,but do realise that although such networks are present, it will require magnification of up to 400x so to do, these life-forms are tiny but numerous, and ubiquitous in 'unimproved ' fungal soils. Mankind has spent billions on space observation, looking for life beyond. Very much less looking beneath ones feet.

 

Although I don't disagree I do sometimes think we are being taken for a ride.