Sustainable P roduction of Cabbage Using Different Irrigation Levels and Fertilizer Types Affecting Some Soil Chemical Characteristics

A field experiment was carried out during the two successive autumn seasons of 2013 and 2014 under open field conditions in protected cultivation site, Agriculture Research Centre , Giza governorate, Egypt. The study was investigating the effects of different irrigation levels (50, 75 and 100% of crop evapotranspiration (ETc)) and different sources of fertilizers (inorganic fertilizers (control), cattle manure, compost and vermicomp ost) on some soil chemical characteristics and vegetative growth, yield and water use efficiency of head cabbage. Obtained results showed that soil pH decreased at the end of experiment with a range of 0.08 - 0.30, compared with before cultivation, with high decreases by 50% of ETc combined with vermicompost. EC e , on the other hand, increased due to different agricultural activities such as adding chemicals and fertilizers, with