Combination of humic substances and arbuscular mycorrhizal fungi affecting corn plant growth

Abstract:

This study evaluates the interaction effects on corn (Zea mays L.) growth between intact humic substances (HS) extracted in an alkaline medium from three different origins (an Organosol [HS‐Org], an Andisol [HS‐And], and vermicompost [HS‐Vc]) and the arbuscular mycorrhizal fungus (AMF) Dentiscutata heterogama. The HS were characterized by spectroscopic techniques, and different biochemical, morphological, nutritional, and AMF colonization parameters were evaluated in corn plants. The experiment was conducted in a greenhouse, and low‐fertility soils sterilized after solarization were used as the substrate. Hybrid corn BR‐3025 was planted, and the HS concentrations used were 5, 10, and 20 mg carbon L−1 for HS‐And, HS‐Vc, and HS‐Org, respectively, applied 15, 25, and 45 d after emergence close to the roots. The results show that HS application and D. heterogama inoculation significantly …

Año de publicación:

2019

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Fuente:

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