Effect of Bio-Organic Fertilizers on the Content of Some Macro-Nutrients in Quinoa Plant as Well as Its Productivity and Quality

Abstract

Sandy soil is a poor soil which has low of organic matter and nutrition. Not only soil productivity had constrained, but also the environmental deterioration and economic losses were getting worse and worse. Two field experiments were conducted over two consecutive winter seasons 2019-2020 and 2020-2021 in sandy soil of Agricultural Station ARC at Ismalia governorate, Egypt. The experiment was split plot design with three replicates.The obtained results cleared that the compost and bio-fertilizers application combined with 75 kg fed -1 N + 150 kg fed -1 P2O5 + 50 kg fed -1 K2O increased N, P and K concentrations and uptake in seeds of quinoa plants. The interaction between bio-fertilizers and compost combined with different rates of mineral fertilizers was significant for plant length (cm), weight of seeds /plant, weight of 1000 grains and weight of grains yield (ton fed -1 ), while the No. of branches was not significant. The highest values of the protein (%), protein yield (kg fed -1 ), carbohydrates (%), oil (%) and chlorophyll (mg g -1 f.w.