Campus Units

Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

4-2016

Journal or Book Title

Journal of Soil Science and Environmental Management

Volume

7

Issue

4

First Page

45

Last Page

52

DOI

10.5897/JSSEM2015.0552

Abstract

Roselle (Hibiscus sabdariffa L.) is an important tropical and subtropical crop, because of its multi uses in the medicinal purposes as well as food industries. A plot experiment was conducted in a Vertisol in Egypt over two sequential seasons (2013 and 2014) to assess the effect of silicon (Si) fertilization on roselle growth and yield. Specific growth characteristics measured were: plant heights, branching, and leaves; biomass and calyces yield; and concentrations of anthocyanin, total soluble solids (TSS), carbohydrates, N, P, and K in the calyces. The experiment compared five rates of Si fertilization (0.00, 1.75, 3.50, 5.25, and 7.00 kg Si ha-1). One-third of each rate was applied as a foliar spray at 45, 60, and 75 days after sowing, respectively. Results showed an increase in plant height, number of branches and leaves to Si fertilization rates. Similarly, anthocyanin and TSS concentration increased with increasing Si rates. Anthocyanin concentration significantly increased by 16.3% as the applied Si rate increased from 0.00 to 5.25 kg Si ha-1. However, carbohydrate content was not affected by the applied Si rates. Nutrients (N, P, and K) concentrations, in the calyces extract, increased with increasing the applied Si rate. Biomass and calyces yield increased by 23 and 33%, respectively, as the applied Si rate increased from 0.00 to 5.25 kg Si ha-1. The highest values of all of the measured properties were observed under the Si rate of 5.25 kg Si ha-1, and the lowest values were obtained from the control treatment (0.00 kg Si ha-1).

Comments

This article is published as Abdelkader, Mohammed A., Mostafa A. Ibrahim, and Lee C. Burras. "Effect of silicon application on roselle (Hibiscus sabdariffa L.) grown in a Vertisol in Egypt." Journal of Soil Science and Environmental Management 7, no. 4 (2016): 45-52. doi: 10.5897/JSSEM2015.0552 . Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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