Prediction of pest pressure on corn root nodes: the POPP-Corn model.
Prediction of pest pressure on corn root nodes: the POPP-Corn model.
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DOI：
10.1007/s10340-016-0788-x
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发表时间：
2017
影响因子：
4.8
通讯作者：
Brown CD
中科院分区：
文献类型：
--
作者：
Agatz A;Ashauer R;Sweeney P;Brown CD
玉米根结线虫Diabrotica spp.结合玉米根系发育的时间显式模型，建立了跨土壤剖面的玉米根系发育模型，将害虫生态、根系损害和产量损失联系起来。该模型的开发侧重于根据实地观察模拟根虫取食造成的根损害，以便将来能够对管理干预措施的效果进行虚拟测试。通过对1991年至2014年在美国伊利诺伊州厄巴纳进行的实地研究中观察到的和模拟的害虫发展和根系损害(根据节点伤害等级从0到3进行评估)的比较，我们提出了该模型，并证明了其在模拟根系损害方面的适用性。该模型模拟了幼虫和成虫的首次出现分别在所有年份的88%和71%的一周内出现，在所有情况下都模拟到伊利诺伊州中部记录的第一次出现的两周内。此外，在所有年份中，有73%的模拟根损伤与2005年至2014年期间田间观测的结果相差0.5个节点伤害刻度点，尽管现场没有测量到初始害虫压力(即土壤中的虫卵数量)的准确信息，也没有从附近位置获得准确的信息。据我们所知，这是第一次将害虫生态、根害和产量损失成功地连锁起来，产生一个虚拟的田地。在研究不同害虫控制措施和策略的效果方面有潜在的应用。本文的在线版本(doi：10.1007/s10340-0160788-x)包含补充材料，授权用户可以使用。
A model for the corn rootworm Diabrotica spp. combined with a temporally explicit model for development of corn roots across the soil profile was developed to link pest ecology, root damage and yield loss. Development of the model focused on simulating root damage from rootworm feeding in accordance with observations in the field to allow the virtual testing of efficacy from management interventions in the future. We present the model and demonstrate its applicability for simulating root damage by comparison between observed and simulated pest development and root damage (assessed according to the node injury scale from 0 to 3) for field studies from the literature conducted in Urbana, Illinois (US), between 1991 and 2014. The model simulated the first appearance of larvae and adults to within a week of that observed in 88 and 71 % of all years, respectively, and in all cases to within 2 weeks of the first sightings recorded for central Illinois. Furthermore, in 73 % of all years simulated root damage differed by <0.5 node injury scale points compared to the observations made in the field between 2005 and 2014 even though accurate information for initial pest pressure (i.e. number of eggs in the soil) was not measured at the sites or available from nearby locations. This is, to our knowledge, the first time that pest ecology, root damage and yield loss have been successfully interlinked to produce a virtual field. There are potential applications in investigating efficacy of different pest control measures and strategies. The online version of this article (doi:10.1007/s10340-016-0788-x) contains supplementary material, which is available to authorized users.