Experimental Farm Bottelare, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Bottelare, Belgium.
Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
Environ Entomol. 2022 Oct 21;51(5):1020-1029. doi: 10.1093/ee/nvac048.
Problems with aphids in small grain cereals, either direct by feeding, or indirect by transmission of Barley Yellow Dwarf Virus, are expected to increase due to climate change and a recent ban on neonicotinoid seed treatments by the European Union. Moreover, insecticide resistance against pyrethroid insecticides is reported at multiple locations throughout the world. Therefore, a better understanding of cereal aphid population dynamics and increased attention towards an integrated pest management is needed. In this study, cereal aphids were monitored on 193 maize and small grain cereal fields throughout Flanders, Belgium. The population dynamics and species distribution were observed throughout the year and the effects of spatio-temporal variables were explored. A significant negative effect was found of grassland in a 1,000 m radius and a positive effect of grain maize in a 3,000 m radius around a small grain cereals field on the maximum infestation rate with aphids in autumn within this field. In a 3,000 m and 5,000 m radius, a significant positive effect of grain maize and a significant negative effect of other small grain cereals was found on the maximum infestation rate during the whole growing season within this field. The mean daily average temperature from 118 to 19 d before sowing had a significant positive effect on the maximum infestation rate in autumn. Mean precipitation, wind speed, and humidity from 52 to 26, 46 to 23, and 107 to 13 d before sowing respectively, had a significant negative effect on the maximum infestation rate in autumn.
由于气候变化和欧盟最近禁止新烟碱类种子处理剂，预计小粒谷物中的蚜虫问题，无论是直接通过取食，还是间接通过传播大麦黄矮病毒，都会增加。此外，全世界多个地方都报道了对拟除虫菊酯类杀虫剂的抗药性。因此，需要更好地了解谷类蚜虫种群动态，并更加关注综合虫害管理。在这项研究中，监测了比利时弗兰德斯的 193 个玉米和小粒谷物田间的谷类蚜虫。全年观察了种群动态和物种分布，并探讨了时空变量的影响。在这个小粒谷物田间，发现距小粒谷物田间 1000 米范围内的草地和 3000 米范围内的谷物玉米对秋季蚜虫最大感染率有显著的负影响，而 3000 米和 5000 米范围内的谷物玉米和其他小粒谷物对整个生长季节的最大感染率有显著的正影响。播种前 118 到 19 天的日平均温度对秋季的最大感染率有显著的正影响。播种前 52 到 26 天、46 到 23 天和 107 到 13 天的平均降水量、风速和湿度分别对秋季的最大感染率有显著的负影响。
