Insecticidal activity of three diatomaceous earths on lesser grain borer,Rhyzopertha dominica F., and their effects on wheat,barley, rye,oats and triticale grain properties |
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| Affiliation: | 1. Center of Small Grains, Save Kova?evi?a 31, 34000 Kragujevac, Serbia;2. University of Novi Sad, Faculty of Agriculture, Department for Plant and Environmental Protection, Trg Dositeja Obradovi?a 8, 21000 Novi Sad, Serbia;3. University of Kragujevac, Faculty of Science, Institute for Biology and Ecology, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia;4. Pesticide and Environment Research Institute, Laboratory of Applied Entomology, Banatska 31b, 11080 Belgrade, Serbia;1. University of Mohaghegh Ardabili, Moghan College of Agriculture and Natural Resources, Ardabil, Iran;2. University of Mohaghegh Ardabili, Department of Plant Protection, Faculty of Agriculture and Natural Resources, Ardabil, Iran;1. University of Ljubljana, Biotechnical Faculty, Dept. of Agronomy, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia;2. Scientific Research Centre of Slovenian Academy of Sciences and Arts, Novi trg 2, SI-1000 Ljubljana, Slovenia;3. Pesticide and Environment Research Institute, Banatska 31b, 11080 Belgrade, Serbia;1. Department of Biological Sciences, Arkansas State University, Jonesboro, AR, 72467, United States;2. Arkansas Agricultural Experiment Station, Arkansas State University Research Unit, Jonesboro, AR, 72467, United States;3. Department of Food Science, University of Arkansas & Division of Agriculture, Fayetteville, AR, 72704, United States;1. Institute of Field and Vegetable Crops, Maksima Gorkog, 30, 21000 Novi Sad, Serbia;2. University of Novi Sad, Faculty of Agriculture, Trg Dositeja Obradovi?a 8, 21000 Novi Sad, Serbia;3. University of Novi Sad, BioSense Institute, Dr Zorana ?in?i?a 1, 21000 Novi Sad, Serbia;4. University of Kragujevac, Faculty of Agronomy, Cara Du?ana 34, 32000 ?a?ak, Serbia;5. University of Kragujevac, Faculty of Science, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia;1. Laboratory of Agricultural Zoology and Entomology, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos str., 11855, Athens, Attica, Greece;2. Laboratory of Agricultural Entomology, Department of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 8 Stefanou Delta str., 14561, Kifissia, Attica, Greece;3. Laboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Phytokou str., Nea Ionia, 38446, Magnissia, Greece;4. Research and Consulting Inc., 14 Tidefall Dr., Toronto, ON, M1W 1J2, Canada;5. Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24100, Antikalamos, Kalamata, Greece |
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| Abstract: | This study aimed to evaluate insecticidal activity of three diatomaceous earths DEs, two originated from Serbia (DE S-1 and DE S-2) and one commercial formulation (Protect-It, Hedley Technologies Ltd. Canada) applied at rates of 0.5, 1.0 and 1.5 g/kg (500, 1000 and 1500 ppm) on Rhyzopertha dominica in wheat, barley, rye, oats and triticale grains and their effects on mass of kernels and several properties: adherence, hectolitre mass, moisture, protein and ash contents. Mortality of R. dominica adults increased with exposure duration and DEs rates. In all tested grains after the longest exposure period (21 days), 1.0 and 1.5 g/kg rates of Protect-It, and 1.5 g/kg rate of DE S-1 and DE S-2 (in barley) caused 95–100% mortality. Offspring reduction of ≥95% was recorded after the application of 1.0 and 1.5 g/kg of Protect-It and 1.5 g/kg of DE S-1. The lowest weight of damaged grain was found after applying 1.0 and 1.5 g/kg of DEs to all grain types, and the highest in rye and wheat treated with 0.5 g/kg DE S-1 and DE S-2, respectively. The highest DEs adherence of 83–95% was detected in wheat, and 87–92% in oats, and the lowest of 71–77% in rye and 59–73% in triticale. All DEs significantly reduced hectolitre mass of all grains, especially Protect-It, 3.6–8.8%. No negative effects of DEs were detected on moisture contents, and the contents of proteins and ashes in the grains. The changes were due to the activity of R. dominica. |
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| Keywords: | Different grains DEs Insecticidal activity Grain properties |
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