The effects of super-absorbent, vermicompost and different levels of irrigation water salinity on soil saturated hydraulic conductivity and Porosity and Bulk density

ABSTRACT: It can be said arguably that low hydraulic conductivity and rapid effect of salinity on it, is among the biggest problems in heavy-textured soils. With the aim of dispelling this problem, a project was done as factorial in four levels of salinity of irrigation water containing sodium chloride (0.79, 5, 10, 15 dS/m) with two types of amendments of super absorbent and vermicompost, each at a level of 0.02 and 1.5 kg per square meter respectively with the control attendance and parameters of bulk density, porosity and hydraulic conductivity were measured. The results showed that the effect of amendments was only significant on porosity and the effect of salinity on porosity and hydraulic conductivity; bulk density was increased and porosity and hydraulic conductivity were decreased by increasing the salinity, measurement parameters were improved by amendments and modifying the effect of vermicompost on the modification of all measured parameters became more than super absorbent.