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Journal of Integrative Agriculture  2018, Vol. 17 Issue (07): 1538-1544    DOI: 10.1016/S2095-3119(17)61857-4
Special Focus: Regularity of population occurrence and migration in the oriental armyworm, Mythimna separata (Walker) Advanced Online Publication | Current Issue | Archive | Adv Search |
Association of host plant growth and weed occurrence with armyworm (Mythimna separata) damage in corn fields
ZHANG Kun-peng1, 2, YU Zhi-hao1, JIANG Shi-xiong1, SUN De-wen3, HUI Jun-tao4, ZHENG Yu-liang5, LI Xiao-zhen6, WANG Xing-yun2, WU Jun-xiang1 
1 State Key Laboratory of Crop Stress Biology in Arid Areas/College of Plant Protection, Northwest A&F University, Yangling 712100, P.R.China
2 Anyang Institute of Technology, Anyang 455000, P.R.China
3 Plant Protection and Quarantine Station of Sanyuan County, Sanyuan 713800, P.R.China
4 Plant Protection and Quarantine Station of Lantian County, Lantian 710500, P.R.China
5 Plant Protection and Quarantine Station of Chang’an District, Chang’an 710100, P.R.China
6 Zhengping Plant Protection Technology Limited Company, Xi’an 710000, P.R.China
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Abstract  
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.
 
Keywords:  Mythimna separata        damage degree        corn growth        corn field weeds  
Received: 15 June 2017   Accepted:
Fund: This work was supported by the National Public Welfare Industry (Agriculture) Scientific Research of China (201403031), the National Key Research and Development Program of China (2017YFD0201807) and the Project of Agricultural Science and Technology Innovation Transformation in Shaanxi Province, China.
Corresponding Authors:  Correspondence WU Jun-xiang, E-mail: junxw@nwsuaf.edu.cn    
About author:  ZHANG Kun-peng, E-mail: 1095557379@qq.com

Cite this article: 

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. 2018. Association of host plant growth and weed occurrence with armyworm (Mythimna separata) damage in corn fields. Journal of Integrative Agriculture, 17(07): 1538-1544.

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