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- Title
Field Application of Mycorrhizal Inoculant Influences Growth, Nutrition, and Physiological Parameters of Corn Plants and Affects Soil Microbiological Attributes.
- Authors
Ferreira, Paulo Ademar Avelar; Marchezan, Carina; Scopel, Gustavo; Schwab, Natalia Teixeira; da Silva, Emanuela Pille; Soares, Cláudio Roberto Fonsêca Sousa; Brunetto, Gustavo; Stürmer, Sidney Luiz
- Abstract
Mycorrhizal inoculants can contribute to the development of corn crops by improving crop productivity. In this sense, the objective of this study was to evaluate the effects of a mycorrhizal inoculant on the dynamics of root system growth, gas exchange, corn crop productivity, and microbial activity in the rhizospheric soil in a no-till area with different levels of available soil phosphorus. The experiment was conducted during the 2019/2020 and 2020/2021 growing seasons. At 75 days after plant emergence, root morphological parameters (total root length (cm), average root diameter (mm), root surface area (cm2), and root volume), shoot biomass production, P content in the plant shoots, gas exchange, and microbiological attributes of the rhizospheric soil of corn were evaluated. At the end of the cycle, corn grain yield was determined. A beneficial effect of AMF inoculation was observed on the root and shoot parameters regardless of soil P level. Under conditions of evenly distributed rainfall during the experiment (2019/2020 season), AMF inoculation contributed to a 90% increase in acid phosphatase activity and a 76% increase in microbial biomass carbon (C-BIO), independent of soil P level. In contrast, under water deficit conditions (2020/2021 season), AMF inoculation provided a 29% increase in grain yield. We concluded that introducing a commercial mycorrhizal inoculant in corn benefits root system morphological parameters and physiological traits, and favors the activity of enzymes related to increased P availability, contributing to increased crop productivity in a no-till system.
- Subjects
ACID phosphatase; CORN development; PLANT shoots; BIOMASS production; GRAIN yields; NO-tillage; MICROBIAL inoculants
- Publication
Agronomy, 2024, Vol 14, Issue 12, p3006
- ISSN
2073-4395
- Publication type
Academic Journal
- DOI
10.3390/agronomy14123006