Avaliação de substratos orgânicos na produção de mudas de hortelã (Mentha gracilis R. Br. e Mentha x villosa Huds.)

Abstract

Avaliação de substratos orgânicos na produção de mudas de hortelã (Mentha gracilisR Palavras-chave: Mentha gracilis, Mentha x villosa, plantas medicinais, substratosABSTRACT: Evaluation of organic substrates on mint (Mentha gracilis R. Br. and Mentha x villosa Huds.) seedling production. The determination of viable alternative substrates is of great importance for the production of medicinal seedlings since the use of residues from agricultural activities represents an alternative to solve environmental and social problems. The experiments were carried out in protected environment and in the field, located in the Federal Technological University of Paraná, Dois Vizinhos Campus, Paraná State, Brazil. The aim of this work was to evaluate organic substrates for the production of mint seedlings in the field. Experimental design was in randomized blocks, with three replicates, in a factorial arrangement evaluating four substrates [bovine manure + vermiculite + sand (1:1:1); bovine manure + sand + soil (1:1:1); soil + vermiculite + poultry manure (1:1:1); and the organomineral substrate Plantmax ® HA] and two mint species (Mentha gracilis and Mentha x villosa). Plant height and leaf number were evaluated at 07, 14 and 21 days after transplanting, besides death rate and fresh and dry matter of shoots and roots. There was no interaction between mint species and substrates for the evaluated variables. The organomineral substrate Plantmax® HA presented the best results for leaf number (8.44), height (8.46 cm), fresh matter (1.56 g plant -1 ), dry matter (0.23 g plant -1 ) and set (100% seedlings in the field), which is of great interest for the mint producer. Based on these results, we concluded that the substrate Plantmaxâ HA is the most recommended for the production of Mentha x villosa and Mentha gracilis seedlings.

Produção de mudas de manjericão (Ocimum basilicum L.) sob efeito de diferentes substratos

“…Botucatu-SP, 2019. Segundo Paulus et al (2011), levando em consideração os fatores importantes a serem observados no processo de produção de mudas de boa qualidade, os substratos representam fator primordial. Daniel et al (1997) Em estudo utilizando a mistura de substratos realizado por Gazola et al (2015) mostraram que a utilização de Fibra de coco com substratos comerciais foi uma alternativa importante na produção de mudas de alface (Lactuca sativa L.), pois, essa mistura além de diminuir o uso do produto comercial, potencializa as características que são desejadas para mudas.…”

Diferentes substratos na propagação por estaquia de assa-peixe (Vernonia polyanthes Less)

“…Na espécie Mikania glomerata Spreng., nota-se a formação de raízes independente da adição de matéria orgânica (vermicomposto) (Vidal et al, 2006). Verifica-se a necessidade de fazer a mistura de componentes e selecionar a melhor combinação para encontrar o substrato que atenda as características físicas e nutricionais exigidas pelas mudas (Paulus et al 2011).…”

Vegetative propagation of lemon balm on different substrates

“…These results resemble those found by Amaro et al (2013), who studied the vegetative propagation of Mentha arvensis on different substrates and observed that the variables shoot length, root length, total number of shoots and dry masses were higher when a soil + washed sand + bovine manure (2:1:1, v:v:v) mixture was used as substrate. However, divergent results were found by Paulus et al (2011), working in a protected environment and in the field, in the state of Paraná, who verified that the substrate based on soil + + sand + bovine manure was not efficient to promote better responses for such variables in Mentha gracilis and Mentha x villosa, being found a higher effect when using the commercial substratum Plantmax®, based on expanded vermiculite and organic material (DDL Agroindústria, Paulínia, São Paulo).…”