Effect of fulvic acid and chitosan in the growth of Roselle plants, Hibiscus sabdarrifa L and their nutrient content

Document Type : Research Paper

Authors

1 Faculty of Biotechnology, Al-Qassim Green University, Babylon, Iraq

2 College of Medicine, University of AL- Ameed, Karbala, PO Box189, Iraq

10.22124/cjes.2022.5579

Abstract

A factorials experiment was carried out in one of the fields of Al-Mashrooa City (45 km north of Babylon Province) for the agricultural season of 2018, with the aim of evaluating the effect of the treatment with several levels of organic acid (fulvic) and the chitosan on the growth of the Hibiscus sabdariffa L. and the nutrient content of its leaves. The first factor is the use of four levels of organic acid- fulvic - (1, 2, 3, and 4 mL L-1). In addition to the comparison treatment, the second agent sprayed the chitosan with three concentrations (1, 3 and 5 mL L-1), followed by the design of Random Complete Blocks Design (RCBD), in the research experiment and three replicates per treatment. The two solutions sprayed led to a significant increase in all vegetative growth indices and the leaf nutrient content. The highest concentration of the leaves was higher in the following studied traits (leaf area 50.34 cm2, dry weight of vegetative total 572.4 g, leaf content of chlorophyll 52.13 SPAD, leaf content of iron 69.88. The interaction of 3 mg L-1 fulvic acid with the highest concentration of chitosan was superior in the following studied traits: plant height 112.33 cm, number of vegetative branches 32.67 branches, leaf content of nitrogen and potassium 1,487%, 1.920%, while the overlap of 2 mg L-1 Fulvic acid with the highest concentration of chitosan in the phosphorus content of leaves was 0.287%. The calcium content of leaf exceeded the overlap of 3 mg L-1 fulvic acid with 3 mg L-1 chitosan at a rate of 3.913%. The lowest results were recorded when comparison of the treatments and all the characteristics studied in the experiment.

Keywords

References

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Caspian Journal of Environmental Sciences
Volume 20, Issue 2
April 2022
Pages 373-383

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