Inoculação com esporos de Pisolithus microcarpus e adição de fosfato natural em mudas de Eucalyptus grandis Inoculation with spores of Pisolithus microcarpus and amendment with rock phosphate in seedlings of Eucalyptus grandis

No solo de ecossistemas florestais de importância economica e para o dia a dia do pequeno produtor, destaca-se a associacao ectomicorrizica (READ; PEREZ-MORENO, 2003). Trata-se de uma associacao simbiotica mutualistica entre as raizes das plantas e fungos especializados do solo que e caracterizada por suas estruturas tipicas: a rede de Hartig e o manto fungico (PETERSON; FARQUHAR, 1994; SMITH; READ, 2008). A rede de Hartig caracteriza-se pelo crescimento de hifas, nos intersticios das celulas das O objetivo deste trabalho foi avaliar a utilizacao dos esporos de Pisolithus microcarpus e de fosfato de natural (FN) em programas de inoculacao de baixo custo de Eucalyptus grandis em viveiros. Embora os tratamentos nao tenham provocado maior crescimento da parte aerea das mudas, verificou-se diferenca significativa na massa seca do sistema radicular e na particao de carbono na planta. A inoculacao promoveu aumento nas taxas de micorrizacao, embora as doses de FN utilizadas neste trabalho nao tenham afetado o estabelecimento da associacao. Estudos adicionais estao sendo conduzidos para otimizar o procedimento de inoculacao com esporos.

• Publication year

  2012

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  DOI 10.5935/1809-2667.20120041
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  Open on Semantic Scholar

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