Yield increase of corn inoculated with a commercial arbuscular mycorrhizal inoculant in Brazil

Shantau Camargo Gomes Stoffel, Cláudio Roberto Fonsêca Sousa Soares, Edenilson Meyer, Paulo Emílio Lovato, Admir José Giachini
2020 Ciência Rural  
ABSTRACT: Arbuscular mycorrhizal fungi (AMF) play an important role in plant growth. However, there are no reports of legally commercialized AMF-based inoculants for agricultural crops in Brazil. The objective of this research was to evaluate the agronomic efficiency of a Rhizophagus intraradices inoculant in combination with phosphate fertilization in grain yield of corn under different edaphoclimatic conditions in Brazil. Experiments were conducted in five Brazilian states (Goiás, Mato
more » ... (Goiás, Mato Grosso, Minas Gerais, Rio Grande do Sul and Santa Catarina) in a 2 x 3 factorial scheme, with two inoculation treatments (inoculated and non-inoculated seeds) and three doses of phosphate fertilization (0, 50 and 100% of the recommended P). At the end of the crop cycle (stages R4-R5), inoculation provided increases in biomass (average of 48%) regardless of the applied dose of P, higher P absorption, and 54% average increase in grain yield. In conclusion, the mycorrhizal inoculant increases biomass yield, P uptake and corn grain yield under different edaphoclimatic conditions in Brazil, especially in soils that originally had low or medium levels of available P.
doi:10.1590/0103-8478cr20200109 fatcat:mifbgfwoyzbijejgd6s2gs4luq