Potato/Maize intercropping reduces infestation of potato tuber moth, Phthorimaea operculella(Zeller) by the enhancement of natural enemies

作     者：ZHENG Ya-qiang ZHANG Li-min CHEN Bin YAN Nai-sheng GUI Fu-rong ZAN Qing-an DU Guang-zu HE Shu-qi LI Zheng-yue GAO Yu-lin XIAO Guan-li ZHENG Ya-qiang;ZHANG Li-min;CHEN Bin;YAN Nai-sheng;GUI Fu-rong;ZAN Qing-an;DUGuang-zu;HE Shu-qi;LI Zheng-yue;GAO Yu-lin;XIAO Guan-li

作者机构：State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanYunnan Agricultural UniversityKunming 650201P.R.China College of Agriculture&Biology TechnologyYunnan Agricultural UniversityKunming 650201P.R.China State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2020年第19卷第2期

页      面：394-405页

核心收录：

学科分类：09[农学] 090401[农学-植物病理学] 0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 0905[农学-畜牧学] 0906[农学-兽医学] 0904[农学-植物保护] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the National Key Research and Development Program of China (2018YFD0200703 and 2018YFD0200802) the National Natural Science Foundation of China (3176059 and 31660537) 

主　　题：potato tuber moth Phthorimaea operculella(Zeller) intercrop biological control natural enemies parasitoids 

摘      要：The potato tuber moth(PTM),Phthorimaea operculella(Zeller),is one of the most economically significant insect pests for potato in both field and storage worldwide.To evaluate the infestation,reduction of potato yield and the control efficacy for PTM,field tests were conducted in two seasons by intercropping of potato as the host plant with maize as a non-host plant of PTM.Three intercropping patterns were tested,which were 2 rows of potatoes with either 2,3,or 4 rows of maize(abbreviated 2 P:2 M,2 P:3 M,and 2 P:4 M),and the monocropped potato as the control,2 rows of potatoes,without maize,(abbreviated 2 P:0 M).Results showed that the population and infestation of PTM in the 2 P:3 M intercropping pattern was significantly lower than those in 2 P:2 M,2 P:4 M and the monocropping pattern of 2 P:0 M,due to the enhancement of natural enemies.Cumulative mines and tunneling in potato leaves in 2 P:3 M intercropping were significantly lower than those in 2 P:2 M and 2 P:4 M patterns.The population of parasitoids and the parasitism rate of PTM in intercropping pattern of 2 P:3 M were significantly higher than that in intercropping pattern of 2 P:2 M,2 P:4 M and monocropping pattern of 2 P:0 M.We conclude that the potato intercropped with maize reduced the adult and larva populations,and reduced the damage from PTM by enhancing the number of parasitoids and the level of parasitism.The greatest population density of parasitoids and parasitism rate were in the intercropping pattern of 2 rows of potatoes with 3 rows of maize.These data indicate that the host/non-host intercropping patterns can be used as a biological control tactic against PTM by enhancing the density of natural enemies in the agro-ecosystems.