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Use of composted biosolids for tropical orchids growing: preliminary results

Utilisation des biosolides compostés pour la culture d’orchidées tropicales: résultats préliminaires

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Advances in Solid State Fermentation
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Summary

The majority of orchids with commercial value are epiphytic, and require growing media. The substrate needs to be highly aerative and supply a high degree of humidity to the roots. The material currently used is pine bark, but it has major draw-backs due to the necessity to change it every two years. A more long lasting substrate is of importance due to the slow growing rate of these plants and requirement of more than two years before the first flower appears. Hence, several mixtures of pine bark, zeolites and composted biosolids (wastewater sludge) were used as alternative growing media. The results of two years experiments using these media for the growing of Phalaenopsis sp. (a commercial orchid) are presented. The best results were obtained with the exclusive biosolids or use of a mixture of zeolite and biosolids.

Resume

La majorité des orchidées ayant une valeur commerciale sont des épiphytes ce qui rend leur culture difficile à cause du milieu nutritif dont elles ont besoin. Le substrat doit être bien aéré et doit apporter aux racines de la plante une humidité élevée.

Le substrat le plus communément utilisé est composé d’écorces de pin. Il montre certains inconvénients: il faut le changer tous les deux ans, pour éviter le pourrissement et parce que l’on ne peut pas y ajouter les nutriments nécéssaires à la plante. Une seconde raison pour laquelle il faut augmenter la durée de vie du substrat est que la croissance des orchidées est lente et plus de deux années sont nécessaires pour obtenir des fleurs.

Nous avons utilisé différents mélanges d’écorces de pin, de zéolite et de biosolides compostés (boues de station d’épuration) comme milieu de culture. Nous présentons ici les résultats de deux années d’étude sur la croissance de Phaelaenopsis sp. (une orchidée commerciale). Les meilleurs résultats ont été obtenus en utilisant exclusivement des biosolides et un mélange de zéolite et de biosolides.

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© 1997 Springer Science+Business Media Dordrecht

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Marcé, M., Torné, J.M., Tiburcio, A.F., Salgot, M. (1997). Use of composted biosolids for tropical orchids growing: preliminary results. In: Roussos, S., Lonsane, B.K., Raimbault, M., Viniegra-Gonzalez, G. (eds) Advances in Solid State Fermentation. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0661-2_46

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  • DOI: https://doi.org/10.1007/978-94-017-0661-2_46

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-4904-9

  • Online ISBN: 978-94-017-0661-2

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