Volume 19 Part 1 Article 39: Impact of compost supplemented with waste paper and anaerobically digested food waste on cultivation of edible mushroom Coprinus comatus (O.F. Müll.) Pers.

Volume 19 Part 1 Article 39
Year 2016
Title: Impact of compost supplemented with waste paper and anaerobically digested food waste on cultivation of edible mushroom Coprinus comatus (O.F. Müll.) Pers.
Author: Agnieszka Jasińska, Ewelina Wojciechowska, Ketil Stoknes and Włodzimierz Krzesiński

Abstract:
Commercial cultivation of edible mushroom Coprinus comatus is usually performed on bed cultures or in bags on the composted substrate from agricultural waste as wheat straw, cotton waste or rice straw with addition of chicken manure as a main source of nitrogen. The latest improvement of cereal production leads to reduction of the straw length in order to lower waste production therefore there is of lack of this kind of waste as a main compound of the mushroom cultivation substrate. However, recent attention on improving utilisation of such a waste as pulp and office paper brings it as interesting alternative for mushroom compost compounds. As renewable energy production become more popular, anaerobically digested (AD) organic waste becomes easily accessible agricultural waste material. AD digestate contain resistant fibrous waste fractions, anaerobic bacteria, is rich source of nitrogen, phosphorus and sulfur, with favorable for mushroom substrate preparation pH of 8.0-8.5.

The objective of this study was to investigate impact of composted Straw-Paper-Digestate substrate on yield, dry matter content and morphological features of Coprinus comatus.

Mushrooms were cultivated on four composts with different amount of digestate, straw and paper. The control was conventional straw-chicken manure compost. The substrate composition was based on dry matter of substrate before processing, evened to obtain 40% of compost DM. Dewatered digestate was added at the start of phase I composting. Cultivation was performed according to Stoknes et al. (2013).

The addition of anaerobically digested organic food waste and composted office paper waste positively affected yield and dry matter of investigated species in comparison to control compost. The best yield was obtained on the substrate with the highest amount of digestate and lowest paper content. In addition, dry matter content of mushrooms harvested from Straw-Paper-Digestate substrates ranged from 8 to 12%. Outcome of presented study implies the feasibility of composted Straw-Paper-Digestate as a substrate in Coprinus comatus cultivation.

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