Effect of Mineral Nitrogen, Sulphur, Organic and Bio-Fertilizations on Some Physicaland Chemical Properties and Maize Productivity in Saline Soil of Sahl El-Tina

摘要

A field experiment was conducted at Sahl El- Tina plain in two successive summer seasons, 2010 and 2011 to study the effect of using compost, sulphur, bio-fertilization, N–mineral fertilizer and their combinations on soil chemical and physical properties and productivity of (Zea mays L) cultivar Triple hybrid 310 on sandy clay loam soil. The obtained results indicated that, EC (dSm-1) and pH values of the studied soil were decreased as a result of applying the combined treatments, bio+sulphur, bio+compost bio+compost+sulphur and at the rate of 75 % N/fed, respectively. Also the OM content (%) was increased by using compost individual or combined with other treatments compared to control. Applying bio + compost + sulphur had increasing the soil bulk density and total porosity values as compared to control and sulphur treatments. The values of field capacity and wilting point in all plots increased with increasing the applied treatments compared to control. The values of available water increased being to increase the field capacity. The values of water holding pores (W.H.P) were higher than the other pores in different fertilizer. The highest diameters of dry and wet aggregates had affected by the individual sulphur or compost while the lowest ones had affected by the compined sulphur, compost and bio. While the percentages of other sizes of dry stable aggregates decrease as their diameters decrease, especially the aggregates those have diameters less than 0.063 mm which the lowest values were found. The high values of total stable aggregates were observed in all the applying treatments compared to control treatment. The crop yield gave the higher straw, grain and biological yield in the treatment of bio+ compost + sulphur + 75% N/fed compared to the other treatments.