Humidity

Agaricus refers to a group mesophytes, that is, organisms required for normal growth and development of a sufficiently high humidity . H . D . Gromov found that the optimal growth and fruiting ridged culture mushroom substrate humidity is 45 - 50 % . Increasing the humidity of over 60% a negative effect on the growth ratemycelium, mycelium with arachnoid quickly becomes thick . ego because compacted substrate having a moisture content of 60% or more, and breathable enough mycelium extends only in the upper layer of the substrate, without penetrating deeply into the ridges in connection with which quickly becomes thick . This is manifested in the conditionsinadequate ventilation in indoor cultivation, where the culture is grown on flat or semi-circular ridges height of 30 - 40 cm .

Changing moisture in the coating material largely influences on the growth of mycelium in the layer of coating material and further fruiting. Inlack of moisture in the coating material, particularly with dry bottom layer in the first days after the application phase, delayed germination mycelium in coating material and as a result - a few days the transition from the vegetative to the generative phase. In this fruiting bodies grow very slowly late fruiting . Excessive moisture coatingaccelerates transfer layer web in the form of mycelium in a thickened, and in some cases may cause undesired premature onset of fruiting and rapid aging and death of the mycelium, which leads to reduction of yield .

Optimumhumidity in the vegetative growth phase, that is, from the mycelium before sowing mycelium focal surface appearance of the coating material layer is in the range 90 - 95, and during the fruiting - 85 - 90%

Of fruit and mushroom fruiting occur in a narrower range of concentration of C02 (0.01 - 0.1%) . Increased carbon dioxide content in the air above the optimum leads to slower growth of fruiting bodies, elongated legs, forming a small diameter of the cap, which is fasterdisclosed .