ANALYSIS OF THE EMERGENCE OF Brassica oleracea L. SUBJECTED TO DIFFERENT SUBSTRATES

Authors

Keywords:

Vegetables, Family farming, Sustainability

Abstract

Kale is a vegetable of great nutritional and economic importance, especially in family farming, playing a crucial role in food security and sustainable rural development in Brazil. The study evaluated the effect of different substrates on the emergence of Brassica oleracea L. (collard greens) seedlings, aiming to identify the most efficient substrate for seedling production. The experiment was conducted in a greenhouse, using four substrates: topsoil, worm humus, vegetable substrate, and arable soil. The design was completely randomized, with 15 replications of 5 seeds each. The seeds were sown in plastic seed trays and irrigated daily. Parameters such as emergence onset (EO), emergence percentage (%E), emergence speed index (ESI), and mean emergence time (MET) were evaluated. The results showed that topsoil was the most effective substrate, with the highest emergence rate (76%) and mean percentage (79.16%), as well as the highest ESI and the lowest MET, indicating rapid and uniform emergence. Arable soil also showed satisfactory results, being a viable and low-cost alternative. It was concluded that all tested substrates are viable for the production of Brassica oleracea L. seedlings, with topsoil standing out as the most effective.

Author Biographies

Rubens Correia da Silva, State University of Alagoas

Graduated with a Bachelor's Degree in Biological Sciences from the State University of Alagoas (UNEAL), Campus I, in 2024. Currently a Master's student in the Graduate Program in Agriculture and Environment (PPGAA) at the Federal University of Alagoas (UFAL), focusing on the Ecology research area. Member of the Laboratory of Microbiology, Immunology, and Parasitology (LABMIP - UFAL), where he participates in research related to environmental microbiology, with an emphasis on its application in agriculture. In addition, he is part of the Environmental and Ethnobiological Studies Group (GEMBIO - UNEAL), collaborating on projects that explore agricultural practices. Has experience in Plant Physiology, particularly in the study of germination, plant development, and nutrition. In the field of Microbiology, he focuses on the interaction between microorganisms and the agricultural environment, seeking solutions to combat diseases caused by phytopathogens.

Claudia Fabrycia Macedo de Lima, State University of Alagoas

Graduate student in the Bachelor's Degree in Biological Sciences at the State University of Alagoas (UNEAL), Campus I. Member of the Environmental and Ethnobiological Studies Group (GEMBIO). Technological Initiation Scholarship holder supported by the Alagoas State Research Support Foundation (FAPEAL). Has experience in plant physiology with an emphasis on plant nutrition, conducting research that contributes to the understanding of plants' physiological responses to different cultivation methods.

Paulina Ferreira dos Santos, State University of Alagoas

Graduated in Biological Sciences from the State University of Alagoas - UNEAL, Campus I (2023.1). Participated in the Institutional Program of Scholarships for Teaching Initiation - PIBID, project 2023-2024. I have experience in continuing education for teachers and possess the following skills (empathy, proactivity, collaboration and teamwork). And work in teaching, research and extension. Currently a scholarship holder of the Institutional Program of Scholarships for Scientific Initiation - PIBIC, through the Research Support Foundation of the State of Alagoas - FAPEAL. Working in the environmental and ethnobiological studies group - GEMBIO, in the following areas: Plant Physiology, Plant Production and Biology Teaching. Acting mainly in the following axes: Research Project, Vegetables and Soil Biology.

Jesuíto dos Santos Miranda, State University of Alagoas

Graduate student in Biological Sciences at the State University of Alagoas (UNEAL), Campus 1 (2023). Currently a scholarship holder from the National Council for Scientific and Technological Development (CNPq). Member of the Environmental and Ethnobiological Studies Group (GEMBIO). I have experience in teaching, research, and outreach. Areas of focus: Plant Physiology, Crop Production, and Biology Education. Mainly working on the following topics: Research projects, Vegetables, and Soil Biology.

Domingos Cláudio Miranda da Silva, State University of Alagoas

Graduated in Biological Sciences from the State University of Alagoas (UNEAL), he is a member of the Environmental and Ethnobiological Studies Group (GEMBIO), where he conducts research on vegetable seed germination in various substrates and NPK fertilization, focusing on the sustainable management and development of vegetable crops.

Rubens Pessoa de Barros, State University of Alagoas

Holds a degree in Sciences with a specialization in Biology from FUNEC/FUNESA/UNEAL – State University of Alagoas. Master's degree in Agroecosystems from the Federal University of Sergipe. Ph.D. in Plant Protection from the Center for Agricultural Sciences (CECA) at the Federal University of Alagoas (UFAL). Specializations in Rural Education from Farmat-MG, Environmental Sciences from PUC-MG, and Teaching Methodology from FIA-SP. Full Professor in the Department of Biological Sciences at the State University of Alagoas (UNEAL).

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Published

2025-08-31

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Vol. 20 No. 2 (2025)

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