Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms
Hamed, M., Nasr, H., Abbassy, M., Rabea, E. (2025). Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms. EKB Journal Management System, 46(2), 489-505. doi: 10.21608/asejaiqjsae.2025.437933
M.S. Hamed; H.M. Nasr; M.A. Abbassy; Entsar Rabea. "Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms". EKB Journal Management System, 46, 2, 2025, 489-505. doi: 10.21608/asejaiqjsae.2025.437933
Hamed, M., Nasr, H., Abbassy, M., Rabea, E. (2025). 'Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms', EKB Journal Management System, 46(2), pp. 489-505. doi: 10.21608/asejaiqjsae.2025.437933
Hamed, M., Nasr, H., Abbassy, M., Rabea, E. Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms. EKB Journal Management System, 2025; 46(2): 489-505. doi: 10.21608/asejaiqjsae.2025.437933

Comparative Efficacy of Chitosan-Silver Nanoparticles and Bioproducts as Alternative Strategies Against Root-Knot Nematode Meloidogyne incognita, and Their Impact on The Non-Target Organisms

Alexandria Science Exchange Journal
Article 20, Volume 46, Issue 2, June 2025, Page 489-505  XML PDF (598.72 K)
Document Type: Original Article
DOI: 10.21608/asejaiqjsae.2025.437933
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Authors
M.S. Hamed* 1; H.M. Nasr* 1; M.A. Abbassy* 1; Entsar Rabea email 2
1Department of Plant Protection, Faculty of Agriculture, Damanhour University, Damanhour, Egypt.
2Department of Plant Protection, Faculty of Agriculture, Damanhour University, Damanhur, Egypt.
Abstract
Nematodes with diversified parasitism are deliberated an significant pest all over the world, producing substantial damage to agricultural crops and decreasing their yield, valued at over $175 to 200 billion worldwide. The current research was performed to evaluate the potentials of four growth promoters, chitosan, chitosan-silver nanoparticles (Ch-AgNPs), bacterial biopesticide (Pseudomonas fluorescens) and phosphite for the control of the nematode Meloidogyne incognita root-knot nematode. The capacity of chitosan to synthesize silver nanoparticle Ch-AgNPs was investigated in this work. Scanning electron microscopy (SEM) was employed to characterize the Ch-AgNP. The mean particle size of Ch-AgNPs ranged between 81.08 and 216.22 nm. Ch-AgNPs demonstrated notable nematicidal activity with an impressively low LC50 value of 39.19 and 26.12 mg/L against J2 larvae of M. incognita after 24 and 48 hours of treatment, respectively. Honeybee mortality increased with increasing concentrations of Ch-AgNPs. At the highest concentration tested (500 mg/L), mortality rates reached 20% after 72 hours, indicating a moderate impact on honeybee survival compared to other compounds. Earthworm mortality increased with higher concentrations of Ch-AgNPs. Mortality rates ranged from 10% to 46.67% after 4 weeks, indicating a moderate to high impact on earthworm populations. The results for Ch-AgNPs and phosphite even at the highest concentrations tested, showed these materials displayed very low toxicity towards earthworms, with weight loss similar to the control group.
Keywords
Nematicidal effect; chitosan-silver nanoparticles; Pseudomonas fluorescens; phosphite; Meloidogyne incognita
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