Factors affecting nitrogen fixation and yield of faba bean (Vicia faba) under Egyptian field conditions: A review

Abstract

Abstract Several field experiments were conducted at different locations in Egypt to study effects of certain agricultural practices on nodulation, N2 fixation and growth of faba bean (Vicia faba). Applications of 18–48 kg N ha−1 and 30–45 kg P ha−1 stimulate nodulation, enhance N2 fixation and produce highest yield. Response of faba bean to P fertilization is quadratic between zero and 75 kg P ha−1. Foliar application of Mo and Zn or pre‐soaking of faba bean seeds in solution of these trace elements is beneficial. Water stress causes marked reduction in nodulation, N2 fixation, and growth and yield of faba bean. High yields are obtained when irrigation is practiced at 50% depletion of available water. Soil salinity or irrigation with saline water EC > 5 mmhos cm−1 badly affects plant growth and yield but nodulation and N2 fixation are less affected. Seed inoculation has proved to be a practical means of increasing yield and improving quality of grains.