Abstract

A quality model has been developed from parameters determining the interactions of physical, chemical, and biological factors during the preparation of mushroom compost for growing Agaricus bisporus. Our results show that a partial least square model based on the combination of pH, dry matter, ammonia, carbon, hydrogen, ash, Cu, Fe, and Na could explain nearly 90% of the variation in mushroom yield obtained from four compost comparative trials. The yields in the data base for generating the model ranged from 138 to 305 kg per ton of compost. The validity of the yield model has been confirmed in a trial carried out in collaboration with experienced commercial growers. This has significant implications for compost producers, as production efficiencies can be maintained by targeting the important parameters.

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