• The International Journal of Biological Research (TIJOBR)- Published Quarterly
  • The International Journal of Global Sciences (TIJOGS) -Published Quarterly

Evaluation of different insecticides against wheat aphid

The International Journal of Biological Research (TIJOBR)


Mirza aizaz Asim1, Aneeb Ali1*, Sumer Zulfiqar1, Hafiz Ehtsham Ali2, Aamir Ali3, Ahsan Abdullah4, Muhammad Ishtiaq Sarwar1, Muhammad Zia-ul-Haq1, Muhammad Umair Gulzar1

*Corresponding author: aneebali771@gmail.com

Submitted Accepted Published
Aug 20,2018 Feb 05,2019 Feb 12,2019

2019 / Vol: 2 / Issue: 1


The present study was conducted to evaluate the efficacy of three insecticides against wheat aphid (Shizaphis graminum Rond.). Four wheat cultivars i.e. Galaxy-2013, Punjab-2011, Ujala-2016 and Sehar-2006 were sown under randomized complete block design (RCBD) in last week of November with net plot size (1.2m×8m); at Entomological research Area University of agriculture, Faisalabad. Treatments applied were T1=thiamethoxam, T2=imidacloprid, T3=carbosulfan, T4=acetamaprid and T5=control. Recommended agronomic practices were carried out during experiment. Data regarding efficacy were recorded 1, 2, 7 and 14 days after application. Aphid population density per plant was recorded on weekly basis. Efficacy of four insecticides i.e. Carbosulfan 20 EC @ 200 ml/acre, Imidacloprid 20 SL @ 250 ml/acre Acetamaprid 20SP@ 50g/acre and Thiamethoxam 25 WG @ 250g/acre compared to untreated plot (control) was evaluated by applying at recommended doses when aphid population reached up to economic threshold level (ETL). After 24 hours of insecticides application Carbosulfan was recorded as most effective insecticide with minimum mean aphid population per plant (1.2) resulting 97.21% aphid mortality followed by imidacloprid (92.41%) and thiamethoxam (89.65%). After 48 hours of application mean aphid population per plant was not statistically different; however, percent mortality caused by carbosulfan, acetamaprid and imidacloprid was same i.e. 99.62, 99.45 and 99.32%, respectively, followed by thiamethoxam (98.78%). Similar results were recorded from 48 hours up to seven days after insecticides application. Imidacloprid appeared to be most persistent 14 days after insecticides application sustaining 97.13% aphid mortality followed by Carbosulfan (92.80%) and thiamethoxam (87.08%). All insecticides significantly reduced aphid incidence in treated plots than that in the control. All four insecticides were effective and reduced aphid population significantly; however, imidacloprid proved to be the most effective with minimum aphid population (1.25 aphids per plant) and maximum percent mortality (97.13%).

Key words: Wheat, aphid, insecticides


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