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- Title
EXPLORING THE EFFICACY OF INDIGENOUS TRICHODERMA ASPERELLUM AND T. HARZIANUM FOR BIODEGRADING THIAMETHOXAM AND CHLORANTRANILIPROLE INSECTICIDES.
- Authors
ISMAIL, A. M.; AHMED, A. Y.; EID, H. T.; SALEH, R. A.; HELMY, R. M. A.; EL GANAINY, S. M.; HAJJAR, M. J.; MOHAMED, H. A.
- Abstract
The study investigated the insecticide tolerance and dissipation potential of five Trichoderma isolates, namely T. asperellum (4 isolates) and T. harzianum (single isolate), to thiamethoxam and chlorantraniliprole in treated liquid medium and tomato fruit. The isolates were identified using ITS gene amplification and sequencing regions. In vitro tolerance was assessed using a poisoned medium technique, with mycelial placed onto Potato Dextrose Agar (PDA.) media supplemented with commercial insecticides at recommended doses. Dissipation potential was determined using the isolates after independently inoculating them into PDB liquid media with Actara and Voliam Flexi. The results showed that the inhibitory effect of thiamethoxam and chlorantraniliprole was almost zero, and the five isolates were competent to reach 9 cm growth like the control after 96 h of incubation at 25°C ± 2°C. Mycelial fresh weights of T. harzianum EGY-T4 and T. asperellum EGY-T5 were significantly equal to their respective control without insecticide. T. asperellum EGY-T1 had the highest dissipation rate of 36% and 30% for thiamethoxam in Actara and Voliam Flexi when applied at the higher dose of 100 mg L-1. The dissipation rate of thiamethoxam was recorded at 92.2% when applied in combination with T. asperellum EGY-T1, reducing the PHI from 7 to 4 days. Chlorantraniliprole was dissipated to the extent of 51.3 and 99.5% when applied in combination with T. asperellum EGY-T1 and T. harzianum EGY-T4, respectively, with residues reaching up to 0.12 and 0.21 mg kg-1 after one day.
- Subjects
BIOPESTICIDES; PESTICIDE residues in food; CHLORANTRANILIPROLE; INSECTICIDES; GENE amplification; THIAMETHOXAM
- Publication
Applied Ecology & Environmental Research, 2024, Vol 22, Issue 4, p3755
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/2204_37553770