The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity
Alfy, H., Ali, H., Morsy, S., Nashed, M. (2023). The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity. EKB Journal Management System, 16(1), 99-111. doi: 10.21608/eajbsa.2023.287587
Hanan Alfy; Heba G. Ali; Sabah Morsy; Mary E. Nashed. "The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity". EKB Journal Management System, 16, 1, 2023, 99-111. doi: 10.21608/eajbsa.2023.287587
Alfy, H., Ali, H., Morsy, S., Nashed, M. (2023). 'The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity', EKB Journal Management System, 16(1), pp. 99-111. doi: 10.21608/eajbsa.2023.287587
Alfy, H., Ali, H., Morsy, S., Nashed, M. The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity. EKB Journal Management System, 2023; 16(1): 99-111. doi: 10.21608/eajbsa.2023.287587

The Efficacy of Chitosan As A Natural Component to Combat Aphids and Enhance The Physiologic Response of Barley Productivity

Egyptian Academic Journal of Biological Sciences. A, Entomology
Volume 16, Issue 1, March 2023, Page 99-111  XML PDF (542.58 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2023.287587
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Authors
Hanan Alfy1; Heba G. Ali2; Sabah Morsy3; Mary E. Nashed4
1Agriculture Research Center, Plant Protection Research Institute, Field Crop Pests Dept., Giza, Egypt.
2Agriculture Research Center, Field Crops Research Institute, Barley Research Dept., Giza, Egypt
3Damanhour University, Faculty of Agriculture, Crop Science Dept., Damanhour 22516, Egypt.
4Agriculture Research Center, Field Crops Research Institute, Crop Physiology Research Dept., Giza, Egypt.
Abstract
Due to the high environmental risks of chemical pesticides, biological control of plant pests with bio-pesticides is highly encouraged and recommended. Chitosan and oligochitosan are well-known biological control agents for their nontoxic, biodegradable, and biocompatible properties. A field experiment was conducted at Nubaria Research Station during the 2020/2021 and 2021/2022 growing seasons to study the effect of different applications of chitosan on barley plants against aphid infestation under field artificial infestation conditions as well as yield and physiologic related traits. The experiment was laid out in a randomized complete block design (RCBD) with three replications and seven treatments among spraying, soaking, and combinations between them at two concentrations 250 and 500 mg. The study results revealed that there were significant variations among the seven treatments for all studied traits. The highest mortality percent was obtained from the treatment T7 (soaking seeds & spraying with 500 mg/L.), which was 99.5 % compared with untreated 2.66%; this treatment induced an increase in the thickness of grains and stem tissues, which caused a reduction in the feeding of aphids, resulting in a clear drop in population number. Significant increases were recorded for total phenolic content, protein content, yield and its components in T7 and T5 treatments.
Keywords
Barley; Aphid; phenols; proteins; lignin
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