Maria Apahidean

Influence of Inoculum Density, Fungicide Treatment of Substrate and Temperature on the Growth and Yield of Pleurotus ostreatus

Five rates of Pleurotus ostreatus inoculum (1, 2, 4, 6 and 8%) and two fungicide treatmentsof the substrate (methyl thiophanate plus CaCO3 vs no treatment) have been studied in a factorialexperiment in two complete randomized blocks. Main results show that the fungicide treatment of thesubstrate allows obtaining a better inoculation at all densities, a lower infection by non-desiredorganisms and for a 6% inoculum rate a yield 25% higher than the yield of the highest inoculum rate(8%) on untreated substrate. Observations and measurements in a commercial crop and in the factorialtrial have allowed to establish several correlations such as between the carpophore diameter andweight; between the carpophore thickness and its density, relation that could be important if density ismore taken in account as a quality parameter. Measures have also allowed to determine growthparameters such as growth rates in function of the carpophores diameter with daily values GRDV from400% (young carpophores with diameters 30 mm). Differences found between growth temperatures 15°C and 20°C were not significantindicating flexibility regarding the temperature regulation.

Ccontribution to Perfecting Technology of Early Savoy Cabbage Culture in Polyethylene Tunnels

In Europe, the major ways to obtain earlier yields are: plastic tunnels, low plastic tunnels, or directly temporally protection using different crops covers. In this way plants have better condition to grow and the yields are earlier. Pedoclimatic condition of our region (Transylvania, Romania) are less favorable for obtaining high and early yields than other region from Romania as South, or West parts. Do of this reason, vegetables farmers from Transylvania, are obliged to find technological arrangements that allowed them to obtain earlier and safety crops. Savoy cabbage in Romania is cultivated only in open field on the small surfaces around the towns of Transylvania region (Indrea et al., 2009). Savoy cabbage has a very big content in vitamins and mineral salts, and it is an excellent source of vitamin C. The cellulosic content of savoy cabbage is lower comparing with white cabbage or red cabbage (Ciofu et al., 2003).