单词 | russian wheat aphid |
释义 | > as lemmasRussian wheat aphid Russian wheat aphid n. an aphid, Diuraphis noxia, that is a major pest of grain crops and grasses and is found in most large wheat- and barley-growing areas worldwide. ΚΠ c1981 Ann. Rep. S. Afr. Dept. Agric. & Fisheries 1 Apr. 1980 to 31 Mar. 1981 1 x. 33/1 Researchers have concentrated solely on the Russian wheat aphid D. noxia, which again assumed serious proportions in the Eastern Free State. 1987 Oregonian (Portland, Oregon) (Nexis) 12 Nov. c10 The Russian wheat aphid was first discovered in the United States in the spring of 1986. 2009 Jrnl. Econ. Entomol. 102 1255 The Russian wheat aphid..devastates wheat and barley production on all continents except Australia. < as lemmas |
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