ARBUSCULAR MYCORRHIZAL FUNGI AND PHOSPHORUS DOSES ON COFFEE GROWTH UNDER A NON-STERILE SOIL

Authors

  • Samuel Dias Moreira Department of Agronomy, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG http://orcid.org/0000-0001-6385-5549
  • André Cabral França Department of Agronomy, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG http://orcid.org/0000-0002-9009-3903
  • Paulo Henrique Grazziotti Department of Forest Engineering, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG http://orcid.org/0000-0002-9252-3065
  • Felipe Douglas Soares Leal Department of Plant Pathology, Universidade Federal de Lavras, Lavras, MG http://orcid.org/0000-0002-4327-9270
  • Enilson de Barros Silva Department of Agronomy, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG http://orcid.org/0000-0002-2088-9965

DOI:

https://doi.org/10.1590/1983-21252019v32n108rc

Keywords:

Biotechnology. Coffea arábica L. Phosphate fertilization. Symbiosis.

Abstract

The use of mycorrhiza is a promising biotechnology that makes coffee cultivation sustainable in the use of fertilizers. In this sense, plant growth and phosphorus contents were assessed in coffee inoculated with Rhizophagus clarus, Claroideoglomus etunicatum and Dentiscutata heterogama in soil fertilized with 0, 0.74, 1.48 and 2.96 g P2O5 kg−1. The experimental design was a randomized block design in a 4 × 4 factorial scheme with four replications. The mycorrhizal seedlings were previously produced and later transplanted to pots, simulating the field planting. The assessments were performed 150 days after transplanting. All variables were influenced by inoculation, but the effects were dependent on P doses. P doses higher than 50% of the recommended dose (0.74 g P2O5 kg−1) decreased the benefit of mycorrhiza. The fungi Rhizophagus clarus and Claroideoglomus etunicatum promoted a higher growth of coffee plants when compared to non-inoculated plants in non-sterilized soils and with a reduction in the applied P.

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Published

27-03-2019

Issue

Section

Agronomy