期刊
CROP PROTECTION
卷 30, 期 2, 页码 216-221出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2010.09.013
关键词
Cereal aphids; Nitrogen fertilizer; Aphid fecundity; Aphid body weight
类别
资金
- Higher Education Commission of Pakistan
Increased nitrogen applications to crops influence plant insect interactions and potentially increase herbivore population growth. The effect of nitrogen applications on the interactions between a wheat host plant, Triticum aestivum, and its herbivores, Sitobion avenae (Fabricius, 1775) and Rhopalosiphum padi (Linnaeus, 1758) was investigated. Adult body weight, fecundity, maturity rate and longevity of the aphids were measured under different nitrogen application on four wheat varieties, Solstice, Einstein, Deben and Alchemy. Adult body weight of R. padi on Alchemy and of S. avenae on Deben was lowest. Fecundity of R. padi was lesser on Deben and Alchemy while fecundity of S. avenae was least on Alchemy. Days to reach maturity were same on all varieties in S. avenae but in R. padi, Deben positively affected the days to reach maturity. Longevity of S. avenae and R. padi was the same on all varieties. N-fertilizer had a positive effect on the adult weight achieved by S. avenae and R. padi. Fecundity and longevity of both species were also positively correlated with N-fertilizer application. In R. padi, N-fertilizer reduced the time to reach maturity but not in S. avenae. (C) 2010 Elsevier Ltd. All rights reserved.
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