Mostafa M.Rady - Botany Department, Faculty of Agriculture, Fayoum University, Fayoum ۶۳۵۱۴, Egypt
Wael M.Semida - Horticulture Department, Faculty of Agriculture, Fayoum University, Fayoum ۶۳۵۱۴, Egypt
Khaulood A.Hemida - Botany Department, Faculty of Science, Fayoum University, Fayoum ۶۳۵۱۴, Egypt
Magdi T.Abdelhamid - Botany Department, National Research Center, ۳۳ Al Behoos Street, Cairo ۱۲۶۲۲, Egypt

Purpose The effect of a novel organo-mineral fertilizer(OMF) compost, as a partial alternative to mineral fertilizers,on soil characteristics, growth, physio-biochemicalattributes, Cd2 and NO3- concentrations, and yields ofPhaseolus vulgaris L. plants grown under salt stress wasinvestigated.Methods Six organic and mineral materials were wellmixed with water and composted in a polyvinyl house in aconcrete trench of size 4 9 5 9 2 m (W 9 L 9 D),respectively. The moisture content was maintained at50–60% throughout the active composting period by frequentchecking. The mixture was turned at 7-day intervalsfor about 2 months to maintain porosity. This OMF compostwas applied for the tested saline soil at 10, 20 and 30ton ha-1 while reducing the recommended NPK to 50%. Inaddition,100% NPK was applied as a control to achieve thepurpose of this study. Growth characteristics, quantitativeand qualitative yield, Cd2 and NO3- concentrations, andphysio-biochemical attributes in common bean plants wereassessed.Results Addition of OMF compost improved the soilchemical and physical properties. Application of OMFcompost at a rate of 20 ton h-1, as an alternative to 50% ofthe recommended dose of mineral-NPK fertilizers, significantlydecreased the concentrations of Cd2 and NO3- inplant leaves, pods and seeds, showing the same growthcharacteristics, and pod and seed yields compared to thecontrol (100% of mineral-NPK fertilizers). This treatmentalso improved all determined physio-biochemical attributesand tested soil characteristics compared to the control.Conclusion The benefit of this OMF compost, as a partialalternative to chemical fertilizers, demonstrated the validityand possibility of sustainable agronomic performance ofcommon bean using locally available recycled organicmaterials for manufacturing the studied OMF.

Common bean Compost Productivity Cadmium Nitrate Salinity