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Effect of ascorbic acid in combination with bio and mineral fertilizers on physiochemical properties of roselle (Hibiscus sabdariffa, L.) plants grown in different types of soil


Horticulture International Journal
Samir SI Ghabour,1 SaadA Mohamed,Sawsan A Saif El-Yazal,Hasan MH Moawad1

Abstract

The impact ofbio and mineral fertilizersin combined with ascorbic acidon phytochemical property(N, P and K percentage in roselle herb and its uptake, photosynthetic pigments (chlorophyll A, chlorophyll B and carotenoids), anthocyanin pigment and pH value) of roselle plants (Hibiscus sabdariffa, L.) under different soils were determined. The data obtained showed that, bio and mineral (NPK) fertilizersin combined with ascorbic acid increased the above phytochemical property of roselle plants under different soils of experiment. The maximum increase of these characters was obtained by the treatment clay soil × 100% NPK + biofertilizers × 400 ppm ascorbic acid, followed by clay soil × 50% NPK + biofertilizers × 400 ppm ascorbic acid as compared to saline loamy sand soil × non fertilizer × zero ascorbic acid treatment, although, the differences between these treatments and mineral fertilizer at the rate of 100% NPK alone were insignificantly. Therefore, it is economically and environmentally recommended to inoculate roselle seeds with mixture of Azotobacter + Bacillus and fertilize these inoculated plants with 50% plus 400 ppm ascorbic acid improve the phytochemical property under clay soil with spraying 400 ppm of ascorbic acid were obtained the best results of this work study.

Keywords

Roselle, Hibiscus sabdariffa L., nitrogen, phosphorus, potassium, biofertilization, ascorbic acid, soil type, chemical composition, agro-ecosystems, aquatic resources, plant growth, Bacillus megaterium, experimental stations, agricultural research

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