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Spent substrates in new cultivation cycles of Pleurotus ostreatus

Mª Raquel Picornell Buendía, Arturo Pardo Giménez & José Arturo de Juan Valero†

Sydowia 69: 73-79

Published online on December 16th, 2016

In this paper the agronomic viability of Pleurotus ostreatus is studied by reusing the spent substrates previously used in crops of the same mushrooms, by applying as additives two commercial supplements at two different doses. We evaluated the qualitative production parameters in one growing season. Spent Pleurotus substrate (SPS) (6000 g bag–1) and Calprozime® (60 g and 120 g), are substrates that promote protein content, firmness, and texture in harvested mushrooms. When the SPS is enriched with the commercial nutritional supplement Calprozime®, agronomic performance is remarkably improved, insignificantly differing from the commercial substrate used as a control in most parameters. These formulations could be a low cost substrate with selective and balanced nutrients for the growth and development of oyster mushrooms.

Keywords: Agricultural wastes, edible mushrooms, spent mushroom substrates, qualitative parameters.

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