Relationship of arbuscular mycorrhizal fungi and rhizobacteria on the growth of olive tree seedlings (<i>Olea europaea</i>)
DOI:
https://doi.org/10.5902/1980509829936Keywords:
Growth-promoting bacteria, Microbiological inputs, MycorrhizaAbstract
A number of factors influence olive tree productivity (Olea europaea L.), from climatic factors to proper management of the species. The efciency of using microbiological inputs, such as arbuscular mycorrhizal fungi and rhizobacteria, have been registered, mainly at the international literature. In Brazil, studies are still incipient. Therefore, the objective of this work was to analyze the effect of the co-inoculation of arbuscular mycorrhizal fungi and rhizobacteria on the growth of olive tree seedlings. Two experiments were conducted simultaneously in DIC, in a factorial scheme (3x3+1) by olive cultivar (Arbequina and Maria da Fé), three rhizobacterial isolates Pseudomonas sp, Paenibacillus sp1, and Paenibacillus sp2 were combined with three species of AMF (Acaulospora scrobiculata, Gigaspora rosea and Rhizophagus clarus) and a total control (without fungus and bacteria), with three replicates per treatment, totaling 60 experimental units. The height, diameter, number of leaves, fresh root matter, shoot dry matter, N and P content and accumulation, intensity and percentage of root colonization, active and total extrarradicular mycelium and the number of spores were evaluated after 12 months. There were differentiated results of treatments for each cultivar, showing that for some attributes, there was an isolated effect of FMA or co-inoculation of FMA and rhizobacteria, which provided signifcant increases on the growth and development of olive tree seedlings.Downloads
References
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