Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain
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The efficacy of spinosad and abamectin against T. castaneum adults from a laboratory population with normal susceptibility to contact insecticides and against malathion-resistant populations from Nikinci and Jakovo was tested in the laboratory (25±1ºC and 60±5% r.h.). The insecticides were applied to 500 g of untreated wheat grain for each of the following application doses: 0.25, 0.5, 1.0, 2.5 and 5.0 mg a.i./kg. After treatment, wheat was divided into three equal subsamples and 50 T. castaneum adults from each of the three test populations were released the next day into jars for each dose. Mortality was evaluated after 7, 14 and 21 days of exposure to treated wheat grain. Generally, higher concentrations and longer exposure periods resulted in higher efficacy of both insecticides, but abamectin was significantly more effective than spinosad against all three tested populations. After 7 days of exposure, mortality did not exceed 30% in any test variant. Fourteen days after treatment ...with the highest dose (5 mg/kg) of spinosad, mortality was highest (75%) in the laboratory population, while treatment with the same dose of abamectin achieved the highest mortality (58%) in the laboratory and Jakovo populations. After 21 days, spinosad applied at the rate of 5 mg/kg was most effective (97% mortality) in the laboratory population, while 88% efficacy was recorded in Jakovo population and 87% in Nikinci population. Abamectin doses of 2.5 and 5 mg/kg caused high adult mortality of 94-100% in the laboratory and Jakovo populations, and a significantly lower mortality in Nikinci population (75 and 86%, respectively). Statistically significant differences in the efficacy of spinosad, and particularly of abamectin, were detected among the three tested populations, the greatest difference being between the laboratory and Nikinci populations, which clearly indicates that resistance of T. castaneum adults to malathion had a significant influence.
Keywords:
efficacy / abamectin / spinosad / populations / T. castaneumSource:
Pesticidi i fitomedicina, 2013, 28, 2, 103-110Publisher:
- Institute of Pesticides and Environmental Protection, Belgrade & Plant Protection Society of Serbia, Belgrade
Funding / projects:
- Geohemijska ispitivanja u funkciji pronalaženja novih ležišta fosilnih goriva i zaštite životne sredine (RS-146008)
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IZBISTY - JOUR AU - Andrić, Goran AU - Kljajić, Petar AU - Pražić Golić, Marijana PY - 2013 UR - https://plantarum.izbis.bg.ac.rs/handle/123456789/902 AB - The efficacy of spinosad and abamectin against T. castaneum adults from a laboratory population with normal susceptibility to contact insecticides and against malathion-resistant populations from Nikinci and Jakovo was tested in the laboratory (25±1ºC and 60±5% r.h.). The insecticides were applied to 500 g of untreated wheat grain for each of the following application doses: 0.25, 0.5, 1.0, 2.5 and 5.0 mg a.i./kg. After treatment, wheat was divided into three equal subsamples and 50 T. castaneum adults from each of the three test populations were released the next day into jars for each dose. Mortality was evaluated after 7, 14 and 21 days of exposure to treated wheat grain. Generally, higher concentrations and longer exposure periods resulted in higher efficacy of both insecticides, but abamectin was significantly more effective than spinosad against all three tested populations. After 7 days of exposure, mortality did not exceed 30% in any test variant. Fourteen days after treatment with the highest dose (5 mg/kg) of spinosad, mortality was highest (75%) in the laboratory population, while treatment with the same dose of abamectin achieved the highest mortality (58%) in the laboratory and Jakovo populations. After 21 days, spinosad applied at the rate of 5 mg/kg was most effective (97% mortality) in the laboratory population, while 88% efficacy was recorded in Jakovo population and 87% in Nikinci population. Abamectin doses of 2.5 and 5 mg/kg caused high adult mortality of 94-100% in the laboratory and Jakovo populations, and a significantly lower mortality in Nikinci population (75 and 86%, respectively). Statistically significant differences in the efficacy of spinosad, and particularly of abamectin, were detected among the three tested populations, the greatest difference being between the laboratory and Nikinci populations, which clearly indicates that resistance of T. castaneum adults to malathion had a significant influence. PB - Institute of Pesticides and Environmental Protection, Belgrade & Plant Protection Society of Serbia, Belgrade T2 - Pesticidi i fitomedicina T1 - Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain EP - 110 IS - 2 SP - 103 VL - 28 DO - 10.2298/pif1302103a ER -
@article{ author = "Andrić, Goran and Kljajić, Petar and Pražić Golić, Marijana", year = "2013", abstract = "The efficacy of spinosad and abamectin against T. castaneum adults from a laboratory population with normal susceptibility to contact insecticides and against malathion-resistant populations from Nikinci and Jakovo was tested in the laboratory (25±1ºC and 60±5% r.h.). The insecticides were applied to 500 g of untreated wheat grain for each of the following application doses: 0.25, 0.5, 1.0, 2.5 and 5.0 mg a.i./kg. After treatment, wheat was divided into three equal subsamples and 50 T. castaneum adults from each of the three test populations were released the next day into jars for each dose. Mortality was evaluated after 7, 14 and 21 days of exposure to treated wheat grain. Generally, higher concentrations and longer exposure periods resulted in higher efficacy of both insecticides, but abamectin was significantly more effective than spinosad against all three tested populations. After 7 days of exposure, mortality did not exceed 30% in any test variant. Fourteen days after treatment with the highest dose (5 mg/kg) of spinosad, mortality was highest (75%) in the laboratory population, while treatment with the same dose of abamectin achieved the highest mortality (58%) in the laboratory and Jakovo populations. After 21 days, spinosad applied at the rate of 5 mg/kg was most effective (97% mortality) in the laboratory population, while 88% efficacy was recorded in Jakovo population and 87% in Nikinci population. Abamectin doses of 2.5 and 5 mg/kg caused high adult mortality of 94-100% in the laboratory and Jakovo populations, and a significantly lower mortality in Nikinci population (75 and 86%, respectively). Statistically significant differences in the efficacy of spinosad, and particularly of abamectin, were detected among the three tested populations, the greatest difference being between the laboratory and Nikinci populations, which clearly indicates that resistance of T. castaneum adults to malathion had a significant influence.", publisher = "Institute of Pesticides and Environmental Protection, Belgrade & Plant Protection Society of Serbia, Belgrade", journal = "Pesticidi i fitomedicina", title = "Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain", pages = "110-103", number = "2", volume = "28", doi = "10.2298/pif1302103a" }
Andrić, G., Kljajić, P.,& Pražić Golić, M.. (2013). Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain. in Pesticidi i fitomedicina Institute of Pesticides and Environmental Protection, Belgrade & Plant Protection Society of Serbia, Belgrade., 28(2), 103-110. https://doi.org/10.2298/pif1302103a
Andrić G, Kljajić P, Pražić Golić M. Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain. in Pesticidi i fitomedicina. 2013;28(2):103-110. doi:10.2298/pif1302103a .
Andrić, Goran, Kljajić, Petar, Pražić Golić, Marijana, "Efficacy of spinosad and abamectin against different populations of red flour beetle (Tribolium castaneum Herbst) in treated wheat grain" in Pesticidi i fitomedicina, 28, no. 2 (2013):103-110, https://doi.org/10.2298/pif1302103a . .