Mycorrhization and glomalin in soil in integrated crop-livestock systems under variable nitrogen doses in pasture

Andréa Scaramal  Menoncin; Gabriela Silva Machinesk; Amanda Carolina Pereira Gil; Laíse da Silveira Pontes; Arnaldo Colozzi Filho

Authors

Andréa Scaramal Menoncin Instituto de Desenvolvimento Rural do Paraná – IAPAR-EMATER https://orcid.org/0000-0002-0024-8909
Gabriela Silva Machinesk Universidade Estadual de Londrina https://orcid.org/0000-0003-3396-1150
Amanda Carolina Pereira Gil Instituto de Desenvolvimento Rural do Paraná – IAPAR-EMATER https://orcid.org/0009-0001-2807-6723
Laíse da Silveira Pontes Instituto de Desenvolvimento Rural do Parana – IAPAR-Emater https://orcid.org/0000-0002-3906-3047
Arnaldo Colozzi Filho Instituto de Desenvolvimento Rural do Paraná – IAPAR-EMATER https://orcid.org/0000-0002-9306-6724

Keywords:

agroforestry, corn, sporulation, soil quality

Abstract

Integrated crop-livestock systems (ICLS) are recognized for their ecological and socioeconomic benefits, particularly for nutrient cycling efficiency and biodiversity promotion. This study assessed arbuscular mycorrhizal fungi (AMF) populations and soil glomalin concentrations, and the productivity of corn and pasture in crop-livestock (CL) and crop-livestock-tree (CLT) systems, fertilized with two nitrogen (N) doses in pasture (90 and 180 kg Nha-1, N90 and N180). Conducted in Ponta Grossa, Paraná, on soil transitioning from Cambisol Haplic Dystrophicto Dystrophic Red Latosol, samples were collected for microbiological analysis after pasture and corn cycles. The study measured easily extractable glomalin (EEG), total glomalin (TG), AMF sporulation, and root colonization, along with corn yield and pasture biomass. Results indicated that the CL system promoted higher EEG than CLT after both cycles, with N90 showing higher glomalin levels post-pasture. AMF sporulation increased with the CL N180 treatment after corn, while no differences were found in AMF root colonization across systems and N levels. Corn yield and pasture biomass were also higher in CL compared to CLT. Findings suggest that CL systems with proper N fertilization enhance AMF and soil glomalin, and agricultural productivity, supporting soil quality and sustainability

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Mycorrhization and glomalin in soil in integrated crop-livestock systems under variable nitrogen doses in pasture

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