The Effect of Cover Soil Salinity on Button Mushroom Yield

It is possible that the imbalance of nutrients due to salinity effect extends to available nutrients, adsorption or division of nutrients into plants or it may be a result of physiological inactivation from a certain nutrient matter, leading to starvation of plant for that fundamental element. Salinity reduces the cumulative nitrogen and phosphorous in plants. In this research, the effect of electrical conductivity (EC) has been examined on rate of growth and yield of mushroom. In an experiment, four samples of cover soil with ECs of 4500, 3000, 1500 and 6000 ds/m in three replicas in the beds prepared in baskets were tested. Given that the obtained diagrams of each stage of harvest, it is concluded that the best EC of cover soil for optimal mushroom growth is 1500 mos micro quantitatively and qualitatively so that it is not otherwise acceptable for growing of mushroom. For this purpose, it should be noted that the sources for securing the cover soils must be prepared from places where there is no salinity problems and if they have high EC, the soils should be washed by water. The peat soils of provinces of Char Mehal, West Azerbayajan and northern area have the best soils for covering.