Avaliação de cultivares de rúcula e produção de sementes em cultivo orgânico

Abstract

The production of rocket in Brazil, whether in conventional or organic cultivation uses seeds whose production comes from the conventional system, and there is no availability of seed produced in organic cultivation. The aim of this work was to evaluate the agronomic performance of rocket cultivars, their production and seed quality in organic production in protected environment. Eight cultivars were evaluated for agronomic characteristics: Agatha, Astro, Apreciata, Cultivada, Folha Larga, Giovana, Maia, Rococo in two seasons: summer and autumn. The experimental design was a randomized complete block design with eight replications and the following characteristics were evaluated: plant height, root length, number of leaves, fresh shoot mass, dry shoot and root mass, yield, iron content and vitamin C of the leaves. In the production of seeds, the evaluated characteristics were: time for flowering, number of branches per plant, length of siliqua, number of siliquas per plant, number of seeds per siliqua, yield, thousand seed mass, germination, electrical conductivity and seed health , and the seeds stored for a period of one year were evaluated: germination, electrical conductivity, emergence, emergency speed index and seed health. The averages were compared by the Scott & Knott test at 5% probability. In the cultivation of rocket during the summer and autumn there was statistical difference for most of the characteristics evaluated. 'Giovana' obtained higher values in number of leaves, plant height, root length and shoot dry mass in the summer crop, whereas in the autumn 'Giovana` and 'Astro' of leaf, plant height and root length. It was possible to produce organic rocket seeds with high yield, germination and sanity in an organic system in a protected environment.