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Yield and quality of curly kale grown using organic fertilizers

ABSTRACT Kale is a vegetable that has high nutrition content, and balanced fertilization is essential to ensure high yield and quality of agricultural products. Curly kale, less known than regular leaf kale, is a new possibility for consumption. However, little is known about the influence of the ty...

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Bibliographic Details
Published in:Horticultura brasileira 2021-03, Vol.39 (1), p.112-121
Main Authors: Verruma-Bernardi, Marta R, Pimenta, Daniella M, Levrero, Gabriel RR, Forti, Victor A, Medeiros, Simone DS de, Ceccato-Antonini, Sandra Regina, Covre, Elizabete A, Ferreira, Marcos D, Moret, Raissa, Bernardi, Alberto CC, Sala, Fernando C
Format: Magazinearticle
Language:English
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Summary:ABSTRACT Kale is a vegetable that has high nutrition content, and balanced fertilization is essential to ensure high yield and quality of agricultural products. Curly kale, less known than regular leaf kale, is a new possibility for consumption. However, little is known about the influence of the type of fertilization on nutritional characteristics. This study aims to evaluate the influence of using organic fertilizers on the productivity, microbiological, and physico-chemical characteristics of Darkibor hybrid curly kale. The treatments consisted of three sources of organic fertilizers, one of organomineral fertilizer, and the control (without fertilization). The highest productivity was observed for kale that was treated with fertilizer in the organomineral composition in all harvests. For microbiological analyses, there was no contamination in all treatments, following legislation. There was no significant difference between treatments for the physicochemical composition, highlighting the high levels of phenolic compounds and proteins in curly kale. There was no difference between treatments regarding the mineral content of the leaves. Organic and organomineral fertilizers made it possible to produce curly kale with adequate physicochemical composition, free from microbiological contamination and heavy metals. RESUMO A couve é uma hortaliça com bom valor nutricional e adubações balanceadas são essenciais para garantir alta produtividade e qualidade de produtos agrícolas. A couve de folha crespa, menos conhecida do que a de folha lisa, é nova possibilidade para consumo, todavia, pouco se conhece sobre a influência do tipo de adubação nas características nutricionais. O objetivo do estudo foi avaliar a influência do uso de fertilizantes orgânicos na produtividade, características microbiológicas e físico-químicas da couve de folha crespa, híbrido Darkibor. Os tratamentos foram três fontes de adubos orgânicos, uma de adubo organomineral e o controle (sem adubação). A maior produtividade foi observada para as couves submetidas ao tratamento com adubo na composição organomineral em todas as colheitas realizadas. Para as análises microbiológicas, não houve contaminação em todos os tratamentos, estando de acordo com a legislação. Não houve diferença significativa entre os tratamentos para composição físico-química, ressaltando os altos teores de compostos fenólicos e proteínas na couve de folha crespa. Quanto aos teores de minerais nas folhas não houve diferen
ISSN:0102-0536
1806-9991
DOI:10.1590/s0102-0536-20210116