Eucalyptus oil and Pisolithus microcarpus in the growth of bracatinga in soil contaminated by copper/ Oleo de eucalipto e Pisolithus microcarpus no crescimento de bracatinga em solo contaminado por cobre

• Published in: Revista brasileira de engenharia agrícola e ambiental Vol. 18; no. 9; p. 927
• Main Authors: Dellai, Alex, da Silva, Rodrigo F, Perrando, Edison R, Jacques, Rodrigo J.S, Grolli, Andre L, Marco, Rudinei D
• Format: Journal Article
• Language: Spanish
• Published: ATECEL--Associacao Tecnico Cientifica Ernesto Luiz de Oliveira Junior 01.09.2014
• ISSN: 1415-4366
• DOI: 10.1590/1807-1929/agriambi.v18n09p927-933

The copper mining areas may present elevated quantity available of this nutrient in the soil affecting the plant development. The objective of this research was to evaluate the effect of eucalyptus essential oil in the association of ectomycorrhizal with Pisolithus microcarpus fungus in bracatinga seedlings and its behavior in soil contaminated by copper. The experiment was conducted in a completely randomized delineation in a factorial arrangement (4 x 5), four types of inoculation (control, oil, fungus and oil + fungus) and five doses of copper (natural soil level, 60, 120, 180 and 240 mg of Cu [kg.sup.-1] soil) were used with five repetitions. Plant height (cm), root collar diameter (mm), dry mass of shoot and root (g), root length (cm), specific surface area ([cm.sup.2]), and ratio of height/diameter of the collar and Dickson quality index were evaluated. It was verified that use of 40 µL [L.sup.-1] of eucalyptus essential oil increases the bracatinga seedlings height in soil with addition 180 mg of Cu [kg.sup.-1] soil. There is no effect of Pisolithus microcarpus inoculation in growth of bracatinga seedlings in soil contaminated with copper. The dose of copper reduces dry mass of shoot and root of seedlings. Key words: ectomycorrhizal native tree heavy metal Mimosa scabrella As areas de mineracao de cobre podem apresentar teores elevados disponiveis deste nutriente no solo afetando o desenvolvimento vegetal. O objetivo do trabalho foi avaliar o efeito do oleo essencial de eucalipto na associacao ectomicorrizica com o fungo Pisolithus microcarpus em mudas de bracatinga e seu comportamento em solo contaminado por cobre. O experimento foi conduzido em delineamento inteiramente casualizado em arranjo fatorial (4 x 5) sendo quatro formas de inoculacao (testemunha, oleo, fungo e oleo + fungo) e cinco doses de cobre (nivel natural do solo, 60, 120, 180 e 240 mg de Cu [kg.sup.-1] de solo) com cinco repeticoes. Avaliaram-se a altura de plantas (cm), diametro do colo (mm), massa seca da parte aerea e radicular (g), comprimento radicular (cm), area superficial especifica ([cm.sup.2]), relacao altura/diametro do colo e indice de qualidade de Dickson. Verificou-se que a utilizacao de 40 [L.sup.-1] de oleo essencial de eucalipto aumenta a altura das mudas de bracatinga em solo com adicao de 180 mg de Cu [kg.sup.-1] de solo. Nao ha efeito da inoculacao de Pisolithus microcarpus no crescimento das mudas de bracatinga em solo contaminado com cobre. As doses de cobre reduzem a massa seca da parte aerea e radicular das mudas. Palavras-chave: ectomicorriza arborea nativa metal pesado Mimosa scabrella