Época de semeadura e substrato na produção de mudas de Caesalpinia pulcherrima (L.) Sw.
Carregando...
Arquivos
Data
2019-03-15
Autores
Santos, Águila Silva
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
Popularmente conhecida como flamboyant-mirim, flamboyanzinho e flor-do-paraíso, a espécie Caesalpinia pulcherrima (L.) Sw. é originária da América Central. Devido ao longo período de floração e à beleza de suas flores, esta espécie tem sido amplamente utilizada no paisagismo e também na arborização urbana. A germinação das sementes e o posterior desenvolvimento das mudas, são afetados por vários fatores como a época de semeadura e substrato. A época de semeadura interfere tanto na germinação das sementes quanto no desenvolvimento das mudas, produção e outras características agronômicas, em função da variação dos fatores do ambiente que reagem entre si e interagem com a planta. O substrato interfere diretamente na qualidade das plantas, devido à variação de suas propriedades físicas, químicas e biológicas, as quais podem afetar a germinação e o desenvolvimento das mudas. O objetivo do presente trabalho foi estudar o efeito da época de semeadura e de substratos comerciais na produção de mudas de Caesalpinia pulcherrima. O delineamento experimental utilizado foi o inteiramente casualizado. Os tratamentos foram arranjados em esquema fatorial 2 x 4 sendo duas épocas de condução (outono e primavera) e quatro substratos comerciais com diferentes composições: 1) Carolina Soil®; 2) Basaplant®; 3) Bioplant® e 4) Maxfértil®; foram cinco repetições e dez sementes por parcela. Os dados coletados foram submetidos à análise de variância e as médias, quando significativas, foram comparadas entre si por meio do teste de Tukey a 5% de probabilidade. Mudas de Caesalpinia pulcherrima apresentaram: a) alta porcentagem de emergência independente da época, nos substratos Carolina Soil®, Basaplant®, e Maxfértil®; b) desenvolvimento mais rápido na primavera, porém mudas de melhor qualidade no outono; c) mudas mais vigorosas nos substratos comerciais Carolina Soil® (primavera) e Maxfértil® (outono).
Popularly known as flamboyant-mirim, flamboyanzinho and paradise flower, the species Caesalpinia pulcherrima (L.) Sw. is native to Central America. Due to long flowering period and beauty of its flowers, this species has been widely used in landscaping and urban arborization. Seed germination and seedlings development are affected by many factors such as sowing time and substrate. The sowing season interferes both in seed germination and seedling development. Besides, production and other agronomic characteristics, as a function of variation of environmental factors that react with one another and interact with plant. The substrate directly interferes in quality of plants, due to variation of their physical, chemical and biological properties, which can affect germination and development of seedlings. The aim of this work was to study effect of sowing season and commercial substrates in production of Caesalpinia pulcherrima seedlings. The experimental design was completely randomized. The treatments were arranged in 2 x 4 factorial scheme, two conduction seasons (autumn and spring) and four commercial substrates with different compositions: 1) Carolina Soil®; 2) Basaplant®; 3) Bioplant® and 4) Maxfertil®; were five replicates and ten seeds per parcel. Data collected were submitted to analysis of variance and averages, when significant, were compared to each other by Tukey test at 5% of probability. Seedlings of Caesalpinia pulcherrima showed: a) high percentage of emergence independent of time in substrates Carolina Soil®, Basaplant® and Maxfertil®; b) faster development in spring than fall, but better seedlings in fall; c) more vigorous seedlings in Carolina Soil® (spring) and Maxfertil® (autumn) commercial substrates.
Popularly known as flamboyant-mirim, flamboyanzinho and paradise flower, the species Caesalpinia pulcherrima (L.) Sw. is native to Central America. Due to long flowering period and beauty of its flowers, this species has been widely used in landscaping and urban arborization. Seed germination and seedlings development are affected by many factors such as sowing time and substrate. The sowing season interferes both in seed germination and seedling development. Besides, production and other agronomic characteristics, as a function of variation of environmental factors that react with one another and interact with plant. The substrate directly interferes in quality of plants, due to variation of their physical, chemical and biological properties, which can affect germination and development of seedlings. The aim of this work was to study effect of sowing season and commercial substrates in production of Caesalpinia pulcherrima seedlings. The experimental design was completely randomized. The treatments were arranged in 2 x 4 factorial scheme, two conduction seasons (autumn and spring) and four commercial substrates with different compositions: 1) Carolina Soil®; 2) Basaplant®; 3) Bioplant® and 4) Maxfertil®; were five replicates and ten seeds per parcel. Data collected were submitted to analysis of variance and averages, when significant, were compared to each other by Tukey test at 5% of probability. Seedlings of Caesalpinia pulcherrima showed: a) high percentage of emergence independent of time in substrates Carolina Soil®, Basaplant® and Maxfertil®; b) faster development in spring than fall, but better seedlings in fall; c) more vigorous seedlings in Carolina Soil® (spring) and Maxfertil® (autumn) commercial substrates.
Descrição
Palavras-chave
Flamboyant-mirim, Germinação de sementes, Arborização urbana, Paisagismo, Seeds germination