Production of the mushroom substrate:
 

(Process flow for substrate production)
 
 
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The raw materials of the substrate are horse manure, straw, poultry manure, gypsum, process water and water.

Production of the substrate is divided into four phases.

The first phase consists of prefermentation and fermentation. Straw, poultry manure, gypsum, process water and water are mixed at the start of the prefermentation process. After these materials have been mixed, horse manure and water are added for the fermentation process and the ingredients are mixed again.
More water is added and mixed after fermentation.
Prefermentation and fermentation each take one week.

In the second phase the mixture is pasteurised and conditioned. This phase takes two weeks.

In the third phase the mixture is inoculated with mycelium. After this has grown through the mixture, supplements are added. In this phase any mushroom substrate already grown through with mycelium is delivered to the growers. The third phase takes two weeks.

In the fourth and final phase the trays are filled with the mushroom substrate, covered with casing material and placed in cultivation rooms, each holding 720 trays. During the fructification phase, which takes about two weeks, the trays are irrigated with about 26 - 30 litres water/m² over the two week period. The trays are then delivered to the growers.
 

Phase I

In this phase straw, poultry manure, gypsum, process water and water are mixed.

  • Prefermentation

Horse manure and water are added after prefermentation.

  • Fermentation

Phase II

Pasteurisation and conditioning are carried out in this phase.
 
Phase III

In this phase the substrate is inoculated with mycelium. It takes two weeks for the mycelium to grow through the substrate.

Phase IV

In this phase the trays are filled with the substrate, covered with the casing material and placed in cultivation rooms.

  • Fructification

In this process the trays are irrigated with about 26 - 30 litres water/m² over a two week period. The trays are then delivered to the growers.

  • Delivering the trays