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I am sorry to say but this thread is full of mistakes,sorry.
Mushroom farmers use the compost only once because mushrooms require very high nutrients to grow well and so after one crop the level of nutrients drops below the level required and so it is sold off as mushroom compost. At this stage it still has a good nutrient content and so is ideal for vegetable growing. Mushroom compost is largely horse manure, to which a special compost is added (cast) which contains spores of the choosen mushroom.
Mushroom rings that are seen in lawns are the fruiting bodies of a fungus and are mearly a very small part of the whole fungus which is made up of small thread like structures in the soil below. They do not specifically require decaying wood to grow, any decaying matter will do. They start from one point and grow outwards and this is why you end up with a circle of mushrooms.
There is no way to get rid of this fungus which is growing below the lawn, you can only wait for it to go. It is good practice to remove the mushrooms as they appear to prevent spores spreading over the lawn which may form another fungal growth.
The best advice is to improve the surface of your lawn to discourage the growth of the fungus near the surface and so decrease the mushroom. If it has a lot of moss and the grass is in a shady area then the top part of the soil under the lawn will be relatively damp and so ideal for fungal growth. Get rid of the moss and try and improve the amount of light which gets to the grass. Also if you do not feed the grass regularly then give it a feed every 6-8 weeks, this will make the grass grow more strongly and therefore remove more water from the ground, reducing the mositure available to the fungus.
Also if you can, always take the clippings of the grass and so not allow them to remain on the grass, the same is true of leaves etc. If you can manage use a scarifier to remove dead material from the lawn. This will all reduce the organic matter present. No need to start ripping up the lawn and removing the soil, it will have no effect.
I hope this helps.
Andrew
Mushroom farmers use the compost only once because mushrooms require very high nutrients to grow well and so after one crop the level of nutrients drops below the level required and so it is sold off as mushroom compost. At this stage it still has a good nutrient content and so is ideal for vegetable growing. Mushroom compost is largely horse manure, to which a special compost is added (cast) which contains spores of the choosen mushroom.
Mushroom rings that are seen in lawns are the fruiting bodies of a fungus and are mearly a very small part of the whole fungus which is made up of small thread like structures in the soil below. They do not specifically require decaying wood to grow, any decaying matter will do. They start from one point and grow outwards and this is why you end up with a circle of mushrooms.
There is no way to get rid of this fungus which is growing below the lawn, you can only wait for it to go. It is good practice to remove the mushrooms as they appear to prevent spores spreading over the lawn which may form another fungal growth.
The best advice is to improve the surface of your lawn to discourage the growth of the fungus near the surface and so decrease the mushroom. If it has a lot of moss and the grass is in a shady area then the top part of the soil under the lawn will be relatively damp and so ideal for fungal growth. Get rid of the moss and try and improve the amount of light which gets to the grass. Also if you do not feed the grass regularly then give it a feed every 6-8 weeks, this will make the grass grow more strongly and therefore remove more water from the ground, reducing the mositure available to the fungus.
Also if you can, always take the clippings of the grass and so not allow them to remain on the grass, the same is true of leaves etc. If you can manage use a scarifier to remove dead material from the lawn. This will all reduce the organic matter present. No need to start ripping up the lawn and removing the soil, it will have no effect.
I hope this helps.
Andrew