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Osman, M., Mohsen, A., Nessim, A., El-Saka, M., Mohamed, W. (2019). Evaluation of Biochar as a Soil Amendment for Alleviating the Harmful Effect of Salinity on Vigna unguiculata (L.) Walp. Egyptian Journal of Botany, 59(3), 617-631. doi: 10.21608/ejbo.2019.6709.1267
Mohamed E.H. Osman; Awatef A. Mohsen; Afaf A. Nessim; Mohamed S. El-Saka; Walaa Mohamed. "Evaluation of Biochar as a Soil Amendment for Alleviating the Harmful Effect of Salinity on Vigna unguiculata (L.) Walp". Egyptian Journal of Botany, 59, 3, 2019, 617-631. doi: 10.21608/ejbo.2019.6709.1267
Osman, M., Mohsen, A., Nessim, A., El-Saka, M., Mohamed, W. (2019). 'Evaluation of Biochar as a Soil Amendment for Alleviating the Harmful Effect of Salinity on Vigna unguiculata (L.) Walp', Egyptian Journal of Botany, 59(3), pp. 617-631. doi: 10.21608/ejbo.2019.6709.1267
Osman, M., Mohsen, A., Nessim, A., El-Saka, M., Mohamed, W. Evaluation of Biochar as a Soil Amendment for Alleviating the Harmful Effect of Salinity on Vigna unguiculata (L.) Walp. Egyptian Journal of Botany, 2019; 59(3): 617-631. doi: 10.21608/ejbo.2019.6709.1267

Evaluation of Biochar as a Soil Amendment for Alleviating the Harmful Effect of Salinity on Vigna unguiculata (L.) Walp

Article 6, Volume 59, Issue 3, November 2019, Page 617-631  XML PDF (2.83 MB)
Document Type: Regular issue (Original Article)
DOI: 10.21608/ejbo.2019.6709.1267
Cited by Scopus (11)
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Authors
Mohamed E.H. Osman1; Awatef A. Mohsen1; Afaf A. Nessim email orcid 1; Mohamed S. El-Saka2; Walaa Mohamed1
1Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
2Soil, Water and Environment Research Institute (S.W.E.R.I.), Sakha, Kafr El-Sheikh, Egypt
Abstract
THE EXPERIMENT was conducted to investigate the effects of application of rice straw waste-derived biochar on the growth and some metabolic activities of salt-stressed cowpea (Vigna unguiculata L.). Moreover, biochar as a soil amendment was evaluated with the additional rate of chemical fertilizers (NPK) under salinity stress in agro-ecosystem. The results indicate that salinity (200mM NaCl) caused a significant reduction in all measured growth parameters of cowpea seedlings compared with control. Salinity stress caused reduction in germination percentage by 54% and 14% and 17% in the lengths of shoot and root, respectively as well as leaf area (22% reduction), compared with the control. Furthermore, the activities of antioxidant enzymes (peroxidase, catalase and superoxide dismutase), malondialdehyde (MDA), ascorbic acid content and osmolytes (total soluble proteins, carbohydrates and amino acids) were increased under salinity stress. The results showed that application of rice straw-derived biochar increased the germination percentage and all the studied growth criteria under salinity stress. In addition, rice straw-derived biochar increased the photosynthetic activity and photosynthetic pigments (Chl. a, Chl. b and carotenoids) and decreased the biosynthesis of MDA and ascorbic acid. The results demonstrate that the highest values of the measured growth parameters and physiological processes of cowpea seedlings were recorded at 75% NPK combined with biochar treatment. In conclusion, application of rice straw-derived biochar reduced the additional rate of chemical fertilizer by 25%.
Keywords
Biochar; Chemical fertilizer; Cowpea; Photosynthesis; salinity
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