Arbuscular mycorrhizal fungi associated with phosphorus doses on maize crop growth
DOI:
https://doi.org/10.17765/2176-9168.2023v16n3e11059Keywords:
Acaulospora scrobiculata, Biostimulant, Gigaspora margarita, ZeamaysAbstract
The corn crop is of great importance for the Cerrado region, and phosphorus absorption is a limiting factor for its development. The symbiotic relationship of arbuscular mycorrhizal fungi allows greater absorption of water and nutrients by the hosts, however, factors such as the availability of nutrients can affect this relationship. The aim was to evaluate the effect of arbuscular mycorrhizal fungi associated with different doses of phosphorus on corn. An experiment was carried out in a 3x5 factorial scheme, composed of arbuscular mycorrhizal fungi species (Acaulospora scrobiculata and Gigaspora margarita) and a control treatment, with the addition of phosphate fertilizer MAP at doses of 0, 25, 50, 100, and 200 mg.dm- 3. At 45 days after sowing, the biometric characteristics of the plant, biomass, leaf P, and root colonization were evaluated. There was interaction between the analyzed variables, with the control being inferior to the inoculated treatments, and the species A. scrobiculata was more responsive at higher doses of phosphorus, while G. margarita provided better results at low doses of phosphorus. It is concluded that the plants inoculated with the AMF species present better development and that the dosages of phosphate fertilizer affect the species differently.References
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