Document details

E ect of Tillage System and Cover Crop on Maize Mycorrhization and Presence of Magnaporthiopsis maydis

Author(s): Patanita, Mariana ; Campos, Maria Doroteia ; Félix, Maria ; Carvalho, Mário ; Brito, Isabel

Date: 2022

Persistent ID: http://hdl.handle.net/10174/31559

Origin: Repositório Científico da Universidade de Évora

Subject(s): arbuscular mycorrhizal fungi; late wilt; biotic stress; cover crop; extraradical mycelium; soil tillage


Description

The sustainability of agriculture requires the adoption of agricultural soil conservation practices with positive impacts on soil quality, which can promote beneficial soil microbiota like arbuscular mycorrhizal fungi (AMF) and its diversity. This study aims to assess the influence of the presence of intact extraradical mycelium as a preferential source of inoculum of the native AMF in order to guarantee a better colonization as well as its possible bioprotective e ect against Magnaporthiopsis maydis. In order to vary the available extraradical mycelium, two experiments, with and without cover crop, were carried out, in which two tillage systems and two maize varieties were studied. The capitalization of the benefits, in terms of grain production and M. maydis presence, associated to the cover crop were only achieved with minimum tillage. Therefore, both cultural practices are necessary to reduce the fungus presence, coupling the e ect of mycorrhization together with other benefits associated with the cover crop. Although in the absence of a cover crop and using conventional tillage, yields and lower levels of M. maydis are possibly achieved, this system is more dependent on the variety used, does not benefit from the advantages associated with the cover crop, is more expensive, and environmentally unsustainable.

Document Type Journal article
Language English
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