NOVELTY - Producing a carbonized organic material suitable for isolation of fire-climax microbes comprises heating an organic material containing spores of the fire-climax microbes under conditions so that carbonization progresses to the extent just prior to extinction of the spores of the fire-climax microbes.    USE - The method is useful in producing a carbonized organic material suitable for isolation of fire-climax microbes for use in stimulating plant growth and productivity, enhancing nutritional values of a plant, improving the plant growth-promoting properties of a soil, reducing environmental pollution or stimulating an animal's immune system (claimed).    ADVANTAGE - The plant produced by the method of the invention has improved growth and productivity and enhancing nutritional values.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) a method of producing fire-climax microbes from a carbonized organic material;    (2) a method of isolating fire-climax microbes from a soil sample;    (3) a composition comprising fire-climax microbes that are aerobic bacteria and produce spores that survive at a temperature of about 600degreesC;    (4) an isolated fire-climax microbe that are aerobic bacteria and produce spores that survive at a temperature of about 600degreesC;    (5) a method of identifying a fire-climax microbe capable of enhancing plant growth;    (6) a method for stimulating plant growth and productivity;    (7) a method for increasing the nutrient or phytochemical content of a product of a plant;    (8) a nutritionally-enhanced plant product harvested from a plant grown according to the method of increasing the nutrient or phytochemical content of a product of a plant;    (9) a method for improving the plant growth-promoting properties of a soil by applying to the soil a composition containing the fire-climax microbe;    (10) a method of relocating plant growth-stimulating fire-climax microbes present in a first soil to a second soil;    (11) a method for enhancing growth and nutritional values of a plant by growing cultivars of the plant in a plant cultivation medium supplemented with a carbonized plant material;    (12) a method for improving the plant growth-promoting properties of a soil;    (13) a method of stimulating an animal's immune system by providing the plant product to the animal for consumption;    (14) a method of enhancing the microbial flora and promoting health of an animal by providing the plant product to the animal for consumption;    (15) a method for enhancing solar energy conversion by plants by growing cultivars of the plants in a plant cultivation medium supplemented with at least one fire- climax microbe;    (16) a method for reducing environmental pollution by growing cultivars of plants in a plant cultivation medium supplemented with at least one fire-climax microorganism;    (17) a method of improving or restoring soil quality in a non-agricultural land by applying to the soil, a composition containing at least one fire-climax microbe.