Host and potting medium for mass inoculation production.
1993
Brown M.B. | Luis E.M. | Sabiniano O.S. | de Castro A.M.
Among the 25 treatments evaluated, Luisiana clay grown with onion was the best for spore production. However, its inoculum potential was very low compared with other treatments and it inhibited root growth of the host and colonization/spread of VAM [vesicular-arbuscular mycorrhiza] mycelia. This was followed by Macolod clay loam grown with onion, stylosanthes and corn. High spore production in both Macolod clay loam and Luisiana clay was observed. This might be attributed to the low OM [organic matter] content and low pH of these soils. Macolod clay loam also supported good root growth and consequently had a remarkable higher inoculum potential compared with Luisiana clay. Perlite had the highest inoculum potential and supported good root growth. However, in this potting medium, the spore density was not assessed due to difficulty of isolating spores. Forest soil and peat soil were found unsuitable for spore production although these had high inoculum potential when grown with mungbean. These two potting media supported good root growth of any of the 5 hosts which were heavily mycorrhizal.
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