Al-Siyabi A A, Kinawy M M, Al-Ansri M, Mahar A N, Gowen S R, Hague N G N
Department of Agriculture, School of Agriculture, Policy and Development, The University of Reading, Earley Gate, Reading RG6 6AR, UK.
Commun Agric Appl Biol Sci. 2006;71(2 Pt A):239-43.
The potential of the entomopathogenic nematode, Heterorhabditis indicus against Thrips tabaci was tested on foliage and in soil at three concentrations. Soil treatment was more effective than the foliar treatment. At 1.5 million nematodes/m2, nearly 70% mortality was achieved with soil application whereas a similar dose applied to the foliage gave only 55% mortality. Soil application gave better mortality of onion thrips (62 %) at 1 million/m2 compared to foliar application at 1.5 million/m2. Probably this is because the nematodes are more effective against the soil dwelling prepupae and pupae stages of the thrips. The possible explanations for the differences are discussed.
在三种浓度下，对致病线虫印度异小杆线虫针对西花蓟马的防治潜力在叶片和土壤中进行了测试。土壤处理比叶面处理更有效。在每平方米150万条线虫的剂量下，土壤施药可实现近70%的死亡率，而相同剂量施用于叶片上时，死亡率仅为55%。每平方米100万条线虫进行土壤施药时，洋葱蓟马的死亡率为62%，优于每平方米150万条线虫进行叶面施药时的效果。这可能是因为线虫对蓟马生活在土壤中的前蛹和蛹阶段更有效。文中讨论了造成这些差异的可能原因。
