Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/17493
Título: Otimização da aplicação de um bio-estimulante para o aumento da produtividade e qualidade do morango
Autor: Silva, João F.
Pinheiro, Rita F.
Amaro, Ana L.
Pereira, Maria J.
Roriz, Mariana
Aguiar, Ana
Pintado, M. E.
Vasconcelos, Marta
Carvalho, S. M. P.
Palavras-chave: Ascophyllum nodosum
Cor
Extratos de algas
Firmeza
Fragaria ananassa
Grau brix
Número de frutos
Data: 2014
Citação: SILVA, João F… [et al.] - Otimização da aplicação de um bio-estimulante para o aumento da produtividade e qualidade do morango. In Simpósio Nacional de Fruticultura, 3.º, Vila Real, Portugal, 4-5 Dezembro 2014. RODRIGUES, Raúl ; SILVA, Ana Paula (coord.) - [Livro de actas] Actas Portuguesas de Horticultura, nº 23. 2014. ISBN 978-972-8936-16-7. p. 380-388
Resumo: Biostimulants derived from natural products are being used by several strawberry growers to increase productivity and fruit quality. Given their high cost it is of utmost importance to carry out studies to validate their positive effect at plant level and to optimize their application. This study aimed at evaluating the effect of a commercial seaweed-derived biostimulant on yield and quality of strawberry produced in soilless cultivation system. Therefore, two application methods (fertigation and foliar application), two frequencies of application (every 15 and every 30 days throughout the cultivation period) and three doses of biostimulant (1.5, 3.0 and 4.5 l/ha) have been tested. In general, the application of biostimulant aiming at increased productivity proved to be more effective via fertigation compared to foliar application. The highest productivity was observed upon application of 4.5 l/ha every 15 days via fertigation (20% increase), with an increase in the total number of fruits produced (11%) and in the average fruit fresh weight (8%), compared to the commercial control (i.e. 1.5 l/ha every 30 days). As regards the quality parameters, there was a maximum increase of firmness (45%) when 4.5 l/ha of seaweed extract was applied via fertigation every 30 days. Foliar applications promoted the highest levels of soluble solids content and were efficient in maintaining the fruit brightness during storage. This study clearly showed that the method, dose and frequency of biostimulant application has a significant impact on the productivity and fruit texture.
Peer review: yes
URI: http://hdl.handle.net/10400.14/17493
Aparece nas colecções:CBQF - Artigos em actas / Papers in proceedings

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Actas Portuguesas de Horticultura 23 380_388 Silva et al 2014_UTAD.pdf1,28 MBAdobe PDFVer/Abrir


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