首页|Demography of Tetranychus urticae (Acari: Tetranychidae) under different nitrogen regimes with estimations of confidence intervals
Demography of Tetranychus urticae (Acari: Tetranychidae) under different nitrogen regimes with estimations of confidence intervals
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
In order to study the effect of nitrogen fertilization on the population growth rate of two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), life table data on common bean, Phaseolus vulgaris L. (Fabaceae), were collected at 25 +/- 1 ?C, 60 +/- 5% RH and a photoperiod of 16:8 (L:D) h. Bean plants were treated with four nitrogen levels (0, 75, 150, and 225 kg N ha(-1)). Data were analyzed based on the age-stage, two-sex life table. The better performance of T. urticae (e.g., shorter total preadult duration, shorter total preoviposition period, longer adult longevity, more oviposition days, and higher fecundity) were observed with 225 kg N/ha (r = 0.2918 d(-1)) and 150 kg N/ha (r = 0.2744 d(-1)). Because the application of nitrogen fertilizer should be aimed to maintain optimal plant physiology while minimizing pest growth (i.e., optimize crop protection), we recommend the optimal N fertilization as 150 kg N/ha. By using the multinomial theorem, we demonstrated that 100,000 bootstrap resamplings can generate stable and precise estimates of population parameters and their confidence intervals. On the contrary, the 1000 bootstrap resamplings might underestimate the confidence intervals and lead to failure of pest control.
Two-spotted spider miteTwo-sex life tableFertilizerBeanBootstrap techniqueMultinomial theoremLIFE-TABLE PARAMETERS2-SPOTTED SPIDER-MITEPOPULATION-GROWTHAGE-STAGEDEMOGRAPHIC-ANALYSISHEMIPTERA APHIDIDAEFERTILIZATIONCULTIVARSRATESCHRYSANTHEMUM
NSTL
Elsevier
