title: Optimization of the production of mycorrhizal inoculum on substrate with organic fertilizer.
abstract: The system for production of inoculum of arbuscular mycorrhizal fungi (AMF) using sand and vermiculite irrigated with nutrient solution is promising. However, organic amendments added to the substrate can stimulate sporulation of AMF and replace the nutrient solution. The aim of this study was to maximize the production of AMF (Acaulospora longula, Claroideoglomus etunicatum, Dentiscutata heterogama and Gigaspora albida) using selected organic substrates (vermicompost, coir dust and Tropstrato) together with sand and vermiculite. The production of spores varied among the tested AMF and according to the organic source added to the substrate. The vermicompost promoted higher sporulation of A. longula in relation to the other AMF and substrates. The Tropstrato inhibited the sporulation of D. heterogama while the reproduction of C. etunicatum was not affected by the organic compounds. The inoculum of A. longula also showed a high number of infective propagules and promoted biomass accumulation in maize plants. The system of inoculum production using sand and vermiculite + 10% vermicompost favors the production of infective inoculum of A. longula with the fungus benefiting growth of corn plants.
authors.affiliation: Departamento de Micologia Centro de Ciências Biológicas Universidade Federal de Pernambuco RecifePE Brazil Departamento de Micologia, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Ieda R
authors.initials: IR
authors.lastname: Coelho
authors.affiliation: Departamento de Micologia Centro de Ciências Biológicas Universidade Federal de Pernambuco RecifePE Brazil Departamento de Micologia, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Maria V L
authors.initials: MV
authors.lastname: Pedone-Bonfim
authors.affiliation: Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada Instituto de Ciências Biológicas Universidade de Pernambuco RecifePE Brazil Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada, Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, PE, Brazil.
authors.forename: Fábio S B
authors.initials: FS
authors.lastname: Silva
authors.affiliation: Departamento de Micologia Centro de Ciências Biológicas Universidade Federal de Pernambuco RecifePE Brazil Departamento de Micologia, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Leonor C
authors.initials: LC
authors.lastname: Maia
mesh_terms: D005308:Fertilizers; D038821:Mycorrhizae / Q000254:growth & development*; D009930:Organic Chemicals / Q000378:metabolism*; D063245:Plant Development; D012988:Soil Microbiology; D013172:Spores, Fungal / Q000254:growth & development*; D003313:Zea mays / Q000382:microbiology
chemical_list: D005308:Fertilizers; D009930:Organic Chemicals
keywords: AMF; biofertilizer; inoculum; vermicomposto