AJUSTES FISIOLÓGICOS, RENDIMENTO E QUALIDADE DA FIBRA DO ALGODÃO COLORIDO ‘BRS RUBI’ SOB DOSES DE SILÍCIO

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Palavras-chave:

Gossypium hirsutum. Região semiárida. Estresses abióticos. Silicato de potássio.

Resumo

Globalmente, demanda por alimentos e bens de consumo tem acompanhado o crescimento populacional, pressionando o setor agropecuário a otimizar os sistemas de produção. No caso específico da agricultura, a utilização de cultivares de plantas alimentícias e energéticas melhoradas e associadas ao uso de substâncias atenuadoras dos estresses abióticos, são estratégias adotadas para solucionar esse problema. Objetivou-se avaliar se o silício (Si) promove ajustes fisiológicos, aumento de produção, rendimento e qualidade de fibras de algodoeiro naturalmente coloridas. Foram testadas cinco doses de silício (0 (controle), 5, 10, 15, 20 kg ha-1 de Si), em delineamento inteiramente casualizado, em vasos. Foram avaliadas variáveis fisiológicas, produção, rendimento e qualidade de fibras da cultivar BRS Rubi. Os dados foram submetidos às análises de componentes principais, variância multivariada e univariada e regressão linear múltipla. O silício promove ajustes fisiológicos, aumento de produção, rendimento e qualidade de fibras de algodão. A qualidade das fibras de plantas tratadas com Si está dentro dos valores esperados para esta cultivar e em conformidade com a norma internacional D-4605 da American Society for Testing and Materials. Recomenda-se aplicações de 10 kg ha-1 de Si para aumentar a qualidade de fibras de algodão naturalmente coloridas cv. BRS Rubi.

 

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Publicado

04-04-2022

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Agronomia