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Position: Home > Articles > Association of host plant growth and weed occurrence with armyworm (Mythimna separata) damage in corn fields Journal of Integrative Agriculture 2018,17 (7)

Association of host plant growth and weed occurrence with armyworm (Mythimna separata) damage in corn fields

作  者:
Zhang Kun-peng;Yu Zhi-hao;Jiang Shi-xiong;Sun De-wen;Hui Jun-tao;Zheng Yu-liang;Li Xiao-zhen;Wang Xing-yun;Wu Jun-xiang
单  位:
Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Coll Plant Protect, Yangling 712100, Shaanxi, Peoples R China;Plant Protect & Quarantine Stn Lantian Cty, Lantian 710500, Peoples R China;Plant Protect & Quarantine Stn Sanyuan Cty, Sanyuan 713800, Peoples R China;Anyang Inst Technol, Anyang 455000, Peoples R China;Plant Protect & Quarantine Stn Changan Dist, Changan 710100, Peoples R China;Zhengping Plant Protect Technol Ltd Co, Xian 710000, Shaanxi, Peoples R China
关键词:
Mythimna separata;damage degree;corn growth;corn field weeds
摘  要:
To clarify association between armyworm (Mythimna separata) damage level and the corn growth and weed occurrence, we investigated corn plant height, stem diameter and vigor as well as weed coverage and biomass. The investigations were conducted at three locations of Shaanxi Province, China which were suffered seriously from armyworm. Significant correlations were found between the parameters analyzed. At stunted corn growth and presence of plenty of weeds, the armyworm damage tended to be heavy; oppositely, when corn grew well and weed density were low, armyworm harm was the minimal. Therefore, corn growing status and weed density can significantly affect armyworm damage level. Our results imply that promoting corn growth and timely removal of weeds are conducive to reducing armyworm occurrence.

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