Estudos de camada de cobertura e indução da frutificação do cogumelo Agaricus subrufescens

Abstract

The globalization has allowed an easy access to information, promoting the demand for a healthy diet by eating natural foods with medicinal properties, among which, edible mushrooms. In Brazil, the mushroom A. subrufescens is cultivated on small farms in rustic structures with low control of environmental conditions, resulting in low productivity. Considering the outdated technology conditions of Brazilian farmers, it is important a technological development that fits better to this reality. In this study, we discuss some basic technological aspects for the cultivation of this mushroom, aiming a greater ease in management and higher incomes for farmers. In the first study we tested alternatives casing layers and different temperatures to induce fruiting bodies of the mushroom. In the second study, we evaluated the use of the insecticide Fipronil / Regent WG® as a defensive to control nematodes, contaminants of the casing layer. In the first study, there was a need to use the addition of 30% limestone to obtain the best results, which increasing 16.66% of the productivity. Among the various casing layers evaluated, mixing sand with substrate based on coconut fiber resulted in the highest yield (19.24%). When it was evaluated the effect of temperature, there were no significant differences between them, but only for the strains tested. For the control of nematodes in the casing layer, the insecticide Fipronil / Regent WG® was efficient when used at the concentration of 8 ppm. In concentrations from 16ppm and above, there was a declining trend in productivity of the mushroom.