Abstract
Many problems facing sandy, calcareous and clay soils and restricts plant growth, nutrients availability and sustainable agriculture. Soil amendments are considered to be the most realistic soil management methods to improve the chemical and physical properties of soils. Improving soil physical and chemical properties, study the correlation between some soil properties and reflected that on plant growth and nutrients uptake by faba bean plant (Vicia faba L. var.716) were the main purpose of this study. To achieve this purpose three factorial pot experiments were conducted at Faculty of Agriculture, Al- Azhar University, Nasr city, Cairo, Egypt during the winter season of 2019, different application rates (5 and10 tone.fed-1) of farmyard manure (FYM), phosphate rock (PhR) and rice straw (RS) were added (alone or mixed) to sandy, calcareous sandy loam and clay soils. Soils were incubated with the studied treatments for 15 days before planting. The main results showed that the addition rates of soil amendments led to slightly increase in soil salinity, total porosity and significant increase in organic matter content. Bulk density and pH decreased with increased the addition rate of FYM and PhR alone or mixed with RS. Decreasing in hydraulic conductivity in sandy soil and sandy loam soil, while it increases in clay soil. Generally, there are negative correlations between organic matter and both of hydraulic conductivity and bulk density in sandy soil and sandy loam soil, while, organic matter and hydraulic conductivity gave a positive effect in clay soil. Changes in soil properties had a positive effect of faba bean growth and macro nutrients uptake. The highest rates of the studied materials showed a significant increase in fresh and dry weight, NPK content and uptake of faba bean plant. Integrated use of mixed highest rates of FYM and PhR with RS were the best option for sustaining physical and chemical properties, enhancing faba bean growth and nutrients uptake the studied soils.