Occurrence and pathogenicity of the stem and bulb nematode in onion crops in Rio Grande do Sul State, Brazil. SciELO Preprints, 2026. DOI: 10.1590/0103-8478cr20250179. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/18801. Acesso em: 9 nov. 2026.