Tillman P G
USDA-ARS, Crop Protection & Management Laboratory, PO Box 748, Tifton, GA 31793, USA.
Environ Entomol. 2013 Jun;42(3):438-44. doi: 10.1603/EN12269.
Stink bugs, including Nezara viridula (L.), Euschistus servus (Say), and Chinavia hilaris (Say), are economic pests across agricultural farmscapes where they can colonize closely associated crops. This 4-yr on-farm study was conducted to examine the likelihood of these three stink bug species colonizing crops in corn-cotton, corn-peanut-cotton, and peanut-cotton farmscapes by using odds ratios. Corn (Zea mays L.), peanut (Arachis hypogaea L.), and cotton (Gossypium hirsutum L.) served as host plants for E. servus and N. viridula. Corn did not serve as a host plant for C. hilaris. Although peanut was a relatively poor host plant, cotton was a relatively good host plant for this stink bug. For N. viridula and E. servus adults, the risk of crop colonization was higher for peanut in peanut-cotton farmscapes with corn than without corn and was highest for cotton in corn-peanut-cotton, followed by peanut-cotton, and lastly corn-cotton farmscapes. The likelihood of oviposition by E. servus, though, was higher in cotton in corn-cotton than peanut-cotton farmscapes. For C. hilaris adults, the risk of crop colonization was highest for cotton in peanut-cotton, followed by corn-peanut-cotton, and lastly corn-cotton farmscapes. Corn was more likely than peanut or cotton to harbor adults and immatures, i.e., egg masses and young nymphs, of N. viridula and E. servus. Adults of all three stink bug species colonized cotton more often than peanut in peanut-cotton farmscapes. However, oviposition by N. viridula and E. servus occurred more often in peanut than in cotton. These assessments of the likelihood of stink bug colonization are essential for modeling predictions of stink bug colonization and designing more comprehensive landscape management approaches for control of stink bugs in these farmscapes.
稻绿蝽（Nezara viridula (L.)）、赤条蝽（Euschistus servus (Say)）和绿盲蝽（Chinavia hilaris (Say)）等椿象是农业景观中的经济害虫，它们会在与之密切相关的作物上定殖。这项为期4年的田间研究旨在通过优势比来检验这三种椿象在玉米 - 棉花、玉米 - 花生 - 棉花和花生 - 棉花景观中定殖作物的可能性。玉米（Zea mays L.）、花生（Arachis hypogaea L.）和棉花（Gossypium hirsutum L.）是赤条蝽和稻绿蝽的寄主植物。玉米不是绿盲蝽的寄主植物。虽然花生是相对较差的寄主植物，但棉花是这种椿象相对较好的寄主植物。对于稻绿蝽和赤条蝽成虫来说，在有玉米的花生 - 棉花景观中，花生上作物定殖的风险高于没有玉米的情况，而在玉米 - 花生 - 棉花景观中，棉花上的风险最高，其次是花生 - 棉花景观，最后是玉米 - 棉花景观。不过，赤条蝽在玉米 - 棉花景观中的棉花上产卵的可能性高于花生 - 棉花景观。对于绿盲蝽成虫来说，在花生 - 棉花景观中，棉花上作物定殖的风险最高，其次是玉米 - 花生 - 棉花景观，最后是玉米 - 棉花景观。玉米比花生或棉花更有可能栖息有稻绿蝽和赤条蝽的成虫及未成熟个体，即卵块和若虫。在花生 - 棉花景观中，三种椿象成虫在棉花上定殖的频率都高于花生。然而，稻绿蝽和赤条蝽在花生上产卵的频率高于棉花。这些对椿象定殖可能性的评估对于模拟椿象定殖预测以及设计更全面的景观管理方法以控制这些农业景观中的椿象至关重要。
