International Journal of Pest Management, ( ISI ), Volume (56), No (3), Year (2010-4) , Pages (1-9)

Title : ( Performance and population growth rate associated with yield losses response of cotton aphid on cucumber under different nitrogen fertilization levels )

Authors: Mojtaba Hosseini , A. Ashouri , A. Enkegaard , S. H. Goldansaz , Mehdi Nassiri Mahallati , V. Hosseininaveh ,

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Performance and population growth rate of the cotton aphid Aphis gossypii Glover and the associated yield losses were studied in relation to varying nitrogen fertilization levels (90, 110, 150 and 190 ppm) on cucumber, Cucumis sativus L., under greenhouse conditions. The results showed that some parameters in the plant including leaf biomass, water and nitrogen content increased at higher nitrogen fertilization. Aphids developing on cucumber plants receiving the highest nitrogen fertilization had a significantly shorter development time and produced a higher number of nymphs per female than aphids subjected to the other treatments. However, no significant differences were observed in juvenile survivorship at different nitrogen treatments. Aphid adult body weight and mean relative growth rate (MRGR), as well as intrinsic rate of natural increase (rm) were positively correlated with the nitrogen fertilization levels in the treated plants. In addition, aphid abundance and population growth rate (r) were significantly influenced by interactive effect of nitrogen fertilization levels and sampling dates. Plant yield was significantly affected by interactions s between nitrogen fertilization rate and aphid presence. In the absence of aphid the plant yield increased linearly with higher nitrogen fertilization; however, in the presence of aphids the yield decreased linearly with nitrogen fertilization with the lowest yield being produced by plants fertilized with 190 ppm nitrogen. Results are discussed in the context of plan quality effects on aphid population dynamic and the associated yield losses and pest population management.

Keywords

, aphid performance, cucumber, nitrogen fertilization, population growth rate, plant yield, Aphis
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@article{paperid:1013488,
author = {Hosseini, Mojtaba and A. Ashouri and A. Enkegaard and S. H. Goldansaz and Nassiri Mahallati, Mehdi and V. Hosseininaveh},
title = {Performance and population growth rate associated with yield losses response of cotton aphid on cucumber under different nitrogen fertilization levels},
journal = {International Journal of Pest Management},
year = {2010},
volume = {56},
number = {3},
month = {April},
issn = {0967-0874},
pages = {1--9},
numpages = {8},
keywords = {aphid performance; cucumber; nitrogen fertilization; population growth rate; plant yield; Aphis gossypii},
}

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%0 Journal Article
%T Performance and population growth rate associated with yield losses response of cotton aphid on cucumber under different nitrogen fertilization levels
%A Hosseini, Mojtaba
%A A. Ashouri
%A A. Enkegaard
%A S. H. Goldansaz
%A Nassiri Mahallati, Mehdi
%A V. Hosseininaveh
%J International Journal of Pest Management
%@ 0967-0874
%D 2010

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