Porównanie wpływu zabiegu czesania okrywy oraz zastosowania kakingu na wielkość plonu i jakość owocników pieczarki dwuzarodnikowej Agaricus bisporus (Lange) Imbach

In 2011-2013 studies of the influence of the two methods of enhancing Agaricus bisporus spawn run in the casing soil on the mushroom yield and its quality were conducted. Treatments in which casing without cacing (compost added to casing) with ruffling after 7 days of spawnrunning were compared with treatments in which cacing was added to the casing, but ruffling was omitted. The use of cacing accelerated the rate of casing colonisation by 3 days, whereas ruffling resulted in crumbling up the particles of casing soil and in a denser growth of mushroom mycelium in them. After ruffling, the influence of the length of mycelium regeneration period (2 or 3 days) on yield was also assessed. Cacing was added at 300 and 450 g·m-2. Higher yields from the first and second flushes were obtained in treatments subjected to ruffling, probably due to a breakdown of casing particles. In the treatments with the addition of cacing, the percentage of carpophores with intact velum was higher in the two first flushes, compared to the ruffling treatment. No significant differences were found in yield level and carpophore quality depending on the time of mycelium regeneration after ruffling or application rate of cacing. However, there was a slight tendency for higher yields in the treatments with a 3 days regeneration time and cacing rate of 450 g·m-2.