Effects of Biological and Chemical Fertilizers on Growth and Symbiotic Properties of Faba Bean (Vicia faba L.) Under Salt Stress

Abstract

Page(s): 6 (1), 150-166, 13 Ref.The effects of chemical (nitrogen and phosphorus) and biological fertilizers (Rhizobium and vesicular arbuscular mycorrhizae [VAM] (Glomus sp.) on growth and symbiotic properties of faba bean under saline conditions were investigated in two pot experiments. Salinity significantly reduced the shoot fresh and dry weight, number of nodules, dry weight of nodules and percentage of mycorrhizal infection. Both VAM inoculation and phosphorus fertilization significantly increased the shoot and root fresh and dry weights, number of nodules and dry weight of nodules under normal and saline conditions. High levels of superphosphate (150 kg/ha) completely suppressed the enhancing effect of the VAM under normal conditions, and the effect was strong at 115 kg/ha under saline conditions. Inoculation of faba bean by Rhizobium significantly increased shoot and root fresh and dry weights, number and dry weight of nodules and pods fresh and dry weights, under saline and non-saline conditions. The dual inoculation increased the nodulation and dry matter under salt stressKhartoum University Pres