I reminds me on the no dig gardening of Charles Dowding. He try to keep the soil healthy with the intensive use of compost. So he, as he said, doesn't need any

I reminds me on the no dig gardening of Charles Dowding. He try to keep the soil healthy with the intensive use of compost. So he, as he said, doesn't need any fertilizer, has no nutrients-washed-out-by-rain problems, a load of less hard work and can make a living out of is market garden. The fungi and bacteria in the compost and the non disturbed soil seem to be the key for that all. Nice to have a proof of that.