Growth of pre-sprouted sugarcane seedlings submitted to supplementary lighting
| Autor: | Héliton Pandorfi, Dimas Menezes, Cristiane Guiselini, Luiz A. Almeida, José J. F. Cordeiro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Environmental Engineering Radiation quality Agriculture (General) Greenhouse Biology Stem length 01 natural sciences Acclimatization S1-972 Sacharum officinarum radiation quality Sugar diodo emissor de luz Sowing 04 agricultural and veterinary sciences biology.organism_classification Horticulture Seedling 040103 agronomy & agriculture 0401 agriculture forestry and fisheries light-emitting diode Agronomy and Crop Science qualidade de radiação 010606 plant biology & botany Field conditions |
| Zdroj: | Revista Brasileira de Engenharia Agrícola e Ambiental-Agriambi, Vol 24, Iss 3, Pp 194-199 (2020) Revista Brasileira de Engenharia Agrícola e Ambiental, Volume: 24, Issue: 3, Pages: 194-199, Published: 02 MAR 2020 Revista Brasileira de Engenharia Agrícola e Ambiental v.24 n.3 2020 Revista Brasileira de Engenharia Agrícola e Ambiental Universidade Federal de Campina Grande (UFCG) instacron:UFCG |
| ISSN: | 1807-1929 |
| Popis: | Brazil is the largest producer and exporter of sugarcane in the world, and the sugar and ethanol sector has invested in the development of new technologies and methods of planting to meet the market demand. Thus, the aim of this study was to evaluate the performance of sugarcane at the acclimation phase and under field conditions, from pre-sprouted seedlings exposed to supplementary lighting, through light-emitting diode, in the period of acclimation in a greenhouse. The experiment was carried out in Carpina, PE, Brazil, from January to September 2017. The experimental plots were composed of pre-sprouted seedlings acclimated in greenhouse, exposed to the supplementary lighting systems, 90% Red + 10% Blue (R:B 90/10), 80% Red + 20% Blue (R:B 80/20), 70% Red + 30% Blue (R:B 70/30) and a control. The evaluation of seedling growth was performed through the measurement of biometric indicators: plant height (cm); stem length (cm); stem diameter (cm) and number of tillers. The biometric indicators showed no significant differences, but plants under lighting systems with a greater proportion of the red wavelength (R:B 80/20 and R:B 90/10) showed higher percentage of survival in the field. RESUMO O Brasil é o maior produtor e exportador de cana-de-açúcar do mundo e, o setor sucroenergético tem investido no desenvolvimento de novas tecnologias e métodos de plantio de cana-de-açúcar para atender à demanda do mercado. Dessa forma, objetivou-se com esta pesquisa, avaliar o desempenho de cana-açúcar no final da fase de aclimatação e em campo, proveniente de mudas pré-brotadas expostas à iluminação suplementar à base de diodo emissor de luz no período de aclimatação em ambiente protegido. O experimento foi realizado em Carpina, PE, de janeiro a setembro de 2017. As parcelas experimentais foram compostas por mudas pré-brotadas em ambiente protegido, expostas aos sistemas de iluminação suplementar, 90% vermelho + 10% azul (V:A 90/10), 80% vermelho + 20% azul (V:A 80/20), 70% vermelho + 30% azul (V:A 70/30) e o controle. A avaliação do crescimento das mudas foi realizada por meio de indicadores biométricos: altura da planta (cm); comprimento do colmo (cm); diâmetro do colmo (cm) e o número de perfilhos. As variáveis biométricas não apresentaram diferenças significativas, no entanto, as plantas submetidas aos sistemas de iluminação com maior proporção do comprimento de onda vermelho (V:A 80/20 e V:A 90/10), apresentaram maior percentual de sobrevivência no campo. |
| Databáze: | OpenAIRE |
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