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Showing 2 results for Takalozadeh
Volume 11, Issue 2 (7-2022)
Abstract
The present research aimed to study the insecticidal activity of four ethanolic extracts of Cercis siliquastrum L., Calendula officinalis L., Peganum harmala L., Melia azedarach L. against Frankliniella occidentalis (Pergande) as well as hatching time and hatching rate of Orius horvathi (Reuter). The results revealed that the extracts had no significant effect on the hatching time of the predatory bug. The result showed concomitant use of the extracts with releasing eggs of the O. horvathi could control thrips effectively. The lowest (73.66 ± 7.01%) hatching rate belonged to P. harmala, indicating concomitant use of P. harmala extract with releasing eggs of O. horvathi can cause effective control of adult thrips. Moreover, concomitant use of C. siliquastrum, C. officinalis extracts with releasing eggs of O. horvathi can control immature thrips effectively.
S. Abolghasemi, K. Ahmadi, H. M. Takalozadeh,
Volume 25, Issue 4 (5-2023)
Abstract
Tuta absoluta (Meyrick) (Lep.: Gelechiidae) is a major pest of tomato crops that causes high yield losses. Currently, in most countries, T. absoluta management is mainly based on chemical control. Nonetheless, special emphasis is being placed on implementing environmentally safe strategies. Commercial formulations based on Bacillus thuringiensis may be a good alternative, as they have been used to control other insect pests successfully. The laboratory and greenhouse data presented in this work are evidence that B. thuringiensis is highly efficient in controlling T. absoluta. Moreover, the toxicity effect of three pesticides (Biolep, Abamectin, and Indoxacarb) was evaluated against the first and last instar larvae of T. absoluta. Results indicate that the Bt formulation has the highest efficacy compared to the chemical pesticides. Abamectin and Indoxacarb had low mortality effect on the first and last instars of T. absoluta. In conclusion, the Bt formulations are recommended as an effective, environmentally friendly, and safe biopesticide for controlling tomato leafminer.
