Behandlung von Reis mit Neem und Diatomeenerde zur Bekämpfung der vorratsschädlichen Coleopteren Sitophilus oryzae und Tribolium castaneum |
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| Authors: | Von CH Ulrichs I Mewis |
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| Institution: | (1) Research Office, Central Luzon State University, 3120 Munoz, Nueva Ecija, Philippines;(2) Technische Universität München, Lehrstuhl für Gemüsebau, 85350 Freising-Weihenstephan |
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| Abstract: | The commercial available diatomaceous earth Fossil Shield® and the neem product Neem Azal-T/S® are tested as single treatments and in combination as controls for the stored product pests Sitophilus oryzae (L.) and Tribolium castaneum (Herbst). The diatomaceous earth, applied in concentrations of 0.5 g, 1 g and 2 g kg-1 rice, reduced numbers of surviving beetles significantly (over a period of 3 weeks). A single treatment with the neem product, in concentrations of 0.01 g, 0.1 g, 0.2 g and 1 g azadirachtin kg-1 rice, increased the mortality rate for both species significantly. The combination of neem and diatomaceous earth (1 g diatomaceous earth with 0.2 g or 1 g azadirachtin kg-1 rice) was more effective than the single treatment in reducing numbers of surviving beetles. |
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