NOVELTY - A composition (c1) comprises: a combination of a phytate and several microorganisms comprising Trichoderma virens fungus or another calcium solubilizing fungus, Bacillus amyloliquefaciens bacterium or another bacterium that produces a phytase enzyme, and a Mycorrhiza fungus or several Mycorrhiza fungi, where the combination is operative to enable the several microorganisms to colonize a plant root when the combination is placed in the vicinity of the plant root.    USE - For increasing the yield of a crop; increasing plant yield or seed yield; improving soil aggregation and soil quality (all claimed); for the growing of most agriculturally important crops.    ADVANTAGE - ADVANTAGE u The composition creates an effective association of mycorrhizal fungi with the root of a host plant in a phosphorus rich environment; is synergistic composition.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: 1) a composition (c2) comprising: Trichoderma virens component; Bacillus amyloliquefaciens component; a mycorrhizal fungus or mycorrhizal fungi component; and a phytate or phytic acid component; 2) a composition (c3) comprising: a phytate or phytic acid; device for producing a soluble calcium or a soluble calcium; and device for producing a phytase enzyme or a phytase enzyme; 3) a composition (c4) comprising: several nutrients comprising a phytate or phytic acid, combined with a several fungi, and several bacteria in the presence of a seed, a plant, or a root; 4) a composition (c5) comprising: 30000 propagules of Mycorrhiza in five gallons of water; one gallon of 15-40% aqueous solution of a phytate; 6.75E8-4.20E9 colony forming units of Trichoderma virens; and 1.35E10-8.40E10 colony forming units of Bacillus amyloliquefaciens; increasing plant yield or seed yield (M1) involving: producing a mixture that is comprised of a nutrient component, a fungus component, and a bacterium component that is operative to produce a synergy among the components; applying the mixture to a seed or applying the mixture in a growth medium in contact with the seed or near to the seed or in a soil mixture where the fungus component and the bacterium component reduce the nutrient component into a plant-available form, allowing a mycorrhizal fungus to colonize a root produced by the seed in the presence of the plant-available form and increasing plant yield or seed yield; 6) increasing plant yield (M2) involving: placing a combination of phytate and several microorganisms comprising Trichoderma virens fungus or another calcium solubilizing fungal component, Bacillus amyloliquefaciens bacterium or another bacterial phytase enzyme producing bacterial component and a Mycorrhiza fungus or several Mycorrhiza fungi in the vicinity of a plant root in a manner that allows the microorganisms to colonize the plant root; 7) improving (M3) soil aggregation and soil quality involving: placing a Trichoderma virens fungus or another calcium solubilizing fungus, a Bacillus amyloliquefaciens bacterium or another bacterium that produces a phytase enzyme, and a Mycorrhiza fungus or several Mycorrhiza fungi in the vicinity of a plant root in a manner that allows the fungi and bacterium to colonize the plant root; 8) increasing (M4) the yield of a plant involving: using a phytase enzyme to reduce phytate and release readily-plant-available phosphorus in a rhizosphere in which the plant is growing, and producing a signal molecule that facilitates germination of a mycorrhizal fungus and subsequent colonization of the roots of the plant by the mycorrhizal fungus; and 9) increasing (M5) the yield of a crop involving: applying a composition of matter comprising the following components to each acre of cropland: one quart of ant 40 wt.% phytate solution; one gallon to five gallons of water or water plus a standard nitrogen, phosphorus and potassium (NPK) fertilizer; 1.35 g of a Bacillus amyloliquefaciens TJ1000 spore composition (at a concentration of 1E10 cfu/g); 1.35 g of a Trichoderma virens Gl-3 spore composition (at a concentration of 5.0E8 cfu/g); and 0.136 g of a Mycorrhiza propagule composition (at a concentration of about 220,000 propagules/g).