Resumo

MARTIN, Gloria M; ARIAS, Lianne  e  RIVERA, R. Selección de las cepas de hongos micorrízicos arbusculares (HMA) más efectivas para la Canavalia ensiformis cultivada en suelo Ferralítico Rojo. cultrop [online]. 2010, vol.31, n.1, pp. 00-00. ISSN 0258-5936.

Some green manure species can increase the potential content of soil mycorrhizal fungi, since they improve P absorption and the subsequent crop yields, compared to fallow systems. This experiment was conducted with this purpose in 5-kg-capacity pots containing Nitisol from September to November 2007 and 2008. A randomized complete experimental design was used with six replicates. Treatments consisted of sowing two seeds of Canavalia ensiformis per pot besides adding 10 g of certified inoculum (25 AMF spores.g-1 inoculum), selecting strains from Glomus mosseae, Glomus claroideum and Glomus hoi-like species out of INCA´s strain bank. Non-inoculated plants and non-sterilized soil were used as check control. Dry weight, leaf analysis and AMF spore count were determined and the best results were obtained by Glomus hoi-like. Results showed a notable NPK absorption difference between strain-inoculated plants and the non-inoculated control. A soil AMF spore multiplication effect was observed, after cutting strain-inoculated canavalia plants. The positive answer to AMF inoculation depends on two factors: the inoculated species and substrate nutrient richness.

Palavras-chave : canavalia; fungi; arbuscular mycorrhizae; inoculation; absorption; mineral nutrients.

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