| 单词 | imidacloprid |
| 释义 | BETA Examples ofimidaclopridDictionary> Examples ofimidacloprid imidaclopridisn’t in the Cambridge Dictionary yet. You can help! Add a definition Aphids were virtually non-existent in both theimidaclopridtreated and untreated blocks. From theCambridge English Corpus At present, acetamiprid,imidaclopridand thiamethoxam are being used extensively because of their effectiveness against important pests like whiteflies and aphids. From theCambridge English Corpus In laboratory culture on cotton, these strains - originally collected from melon/cucumber - regained susceptibility toimidaclopridafter six weeks. From theCambridge English Corpus However, concerns over potential resistance development to compounds in this group have been expressed, especially in light of the heavy reliance that has been placed uponimidacloprid. From theCambridge English Corpus In contrast, diagnostic concentrations of methamidophos (200 mg l 1) andimidacloprid(15 mg l 1) resulted in >60% and >80% mortality for all strains tested, respectively. From theCambridge English Corpus At the time of this study the resistance level toimidaclopridin this strain was about 120-fold. From theCambridge English Corpus It has been maintained in the laboratory under selection toimidaclopridfor approximately 9 years. From theCambridge English Corpus This may suggest the absence or very low frequency of genes capable of providing resistance toimidaclopridin this species. From theCambridge English Corpus Imidaclopriditself does not contain any bond susceptible to this metabolic mechanism of resistance. From theCambridge English Corpus A diagnostic concentration ofimidaclopridwas used to assess the susceptibility of a wider range of strains. From theCambridge English Corpus These results are not surprising considering the heavy usage ofimidaclopridon one cropping system for 9 months of the year. From theCambridge English Corpus Yuma populations were the most susceptible toimidacloprid. From theCambridge English Corpus Applications ofimidaclopridearly in the spring generation of nymphs proved very effective at reducing nymphs and sustaining lower densities of adults through summer. From theCambridge English Corpus This translates into continual applications of insecticides, especiallyimidacloprid, throughout the 9-month period. From theCambridge English Corpus This strain has been maintained under periodic selection with systemic applications ofimidacloprid. From theCambridge English Corpus In 2001, a total of 12 untreated orange trees and 12imidacloprid-treated orange trees were bucket sampled each week. From theCambridge English Corpus Most of the strains were derived from places known for their aphid resistance problems to conventional insecticides beforeimidaclopridwas introduced. From theCambridge English Corpus After receiving reports of poor whitefly control onimidacloprid-treated melons, whitefly samples were shipped to our laboratory for evaluation. From theCambridge English Corpus Despite the presence of high resistance toimidaclopridin the two strains, cross-resistance to dinotefuran was low. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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