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Abstract, Journal of the NACAA, 2014

The sustainability and profitability of many agricultural systems can be enhanced through the utilization of inoculum of arbuscular mycorrhizal [AM] fungi.  Inocula are commercially available, but inoculum can also be produced on-farm in mixtures of compost and vermiculite with a nurse host plant.  Demonstration of the on-farm system at a network of cooperating farms produced inocula with an average potency of 297 ± 43 propagules of AM fungi cm-3 (mean ± SEM, n= 40 site years).  Spread of colonization in host roots was greater for bacterial- vs. fungal-dominated compost, but compost dilution ratio with vermiculite was a more important determinant of AM fungus spore production than compost type. 

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