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| Investigation and insecticide screening of primary sugarcane insect pests in Guizhou province |
| Received:May 22, 2014 |
| DOI： |
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| Hits: 2021 |
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| Abstract: |
| To know main species and occurrence regularity of insects in sugarcane garden in Guizhou province, the systemative survey of insect species in sugarcane garden was carried out by using methods of five-point sampling and Zshaped sampling. Based on investigation results, 5% imidacloprid granules (2.7 kg/hm2), 3% carbofuran granules (2.25 kg/ hm2) and 90% monosultap wettable powder (2.25 kg/hm2) were used as the control insecticides, the field trial of 0.5% imidacloprid monosultap sustained-release granules against Ceratovacuna lanigera (Zehntner) and Chilo sacchariphagus (Kapur) in sugarcane garden under the field condition, and the effect of its usage on sugarcane yield were investigated. The results showed that there were 7 main insects in sugarcane garden in Guizhou province, both C.lanigera and C.sacchariphagus were dominant species of insects in sugarcane garden. The control eficiencies of 0.5% imidacloprid monosultap sustained-release granules against C.lanigera and C.sacchariphagus for bod were 79.09%-91.80% and 71.52%-83.04, respectively, and the yield of sugarcane increased by 7.1%-14.4%, compared with the control. The recommended dose of 0.5% imidaclopridmonosultap sustained-release granules against C.lanigera and C.sacchariphagus in sugarcane garden in Guizhou province was 2.25-4.5 kg/hm2. |
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