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During two successive seasons (2016 and 2017) at Khimisah experimental farm which is located at the latitude of 29°12' 34.5 N'', and the longitude of 25° 24' 2.56'' E., Siwa Research Station, (Matrouh Governorate), Desert Research Center, Egypt, a field experiment was executed under irrigation with saline water (4.2dSm) to investigate the effect of five fertilizer combinations (FC) of both organic and inorganic fertilization as follows; 100%NPK recommended dose i.e. 180kgN, 31kgP and 100kgK ha (FC1), 50%NPK+6MT compost ha (FC2), 75%NPK+ 6MTha compost (FC3), 50%NPK + 12MTcompost ha (FC4) and 75%NPK + 12 MTcompost ha (FC5) and foliar application of fulvic acid at four levels i.e. 0.0, 250, 500 and 750mgL on the vegetative growth parameters, leaf nutrient uptake, yield and quality of roselle (Hibiscus sabdariffa L.) plants in arandomized complete block design with split plot technique in three replications where the main factor was five fertilizer combinations (FC) while the sub main factor was the foliar application of fulvic acid treatments (FA).

alexandria science exchange journal /alexandria science exchange journal

Effect of Organic and Inorganic Fertilization with Spraying of Fulvic Acid on Nutrients Uptake, Quality and Yield of Roselle (Hibiscus sabdariffa L.) Plant Grown in Sandy Soil at Siwa Oasis, Egypt