Investigation on Outbreak of Sesamia inferens and Smut in Cane-growing Regions of Yunnan Province  

作　　者：Yongde MA Xiaoyan WANG Yinhu LI Hongli SHAN Rongyue ZHANG Yingkun HUANG 

机构地区：[1]Agricultural and Rural Affairs Bureau of Gengma County,Gengma 677500,China [2]Sugarcane Research Institute,Yunnan Academy of Agricultural Sciences,Kaiyuan 661699,China

出　　处：《Agricultural Biotechnology》2023年第2期63-66,72,共5页农业生物技术（英文版）

基　　金：Supported by China Agriculture Research System of MOF and MARA(CARS-170303);Yunling Industrial Technology Leading Talent Training Project(2018LJRC56);Special Fund for the Construction of Modern Agricultural Industry Technology System in Yunnan Province。

摘　　要：[Objectives]This study was conducted to clarify the outbreak and disaster characteristics of Sesamia inferens Walker and smut in cane-growing regions in the low-latitude plateau of Yunnan Province,where there is continuous high temperature and drought in spring and summer.[Methods]A systematic investigation and analysis was conducted on different varieties in different types of fields in 16 cane-growing regions with outbreak of S.inferens and smut in Yunnan from 2019 to 2021.[Results]The outbreak of S.inferens and smut in cane-growing regions in the low-latitude plateau of Yunnan Province resulted in an average percent of dry hearts in the range of 17.3%-56.3%,and as high as 84.0%in severe cases.70%thiamethoxam seed treatment dispersible powder and clothianidin or thiamethoxam fertilizer granules were ineffective against S.inferens,while 10%monosultap·thiamethoxam or 10%clothianidin·monosultap granules had a significant control efficacy on S.inferens.The average diseased plant rate ranged from 14.8%to 89.7%in susceptible varieties with smut,and was as high as 100%in severe cases.ROC 1,Yuetang 93-159,Yuetang 00-236,and Liucheng 05-136 had strong resistance,with an average diseased plant rate of 0-5.5%and the highest rate of 7.6%.S.inferens and smut both broke out in cane-growing regions with an altitude below 1200 m.It is recommended to pay attention to disease and pest monitoring in cane-growing regions with an altitude below 1200 m,and combine it with the management of new plants and ratoon plants to effectively prevent and control the first and second generation of S.inferens-infested seedlings from March to May.It is also recommended to strengthen the promotion and application of excellent disease-resistant varieties,so as to achieve a reasonable distribution of varieties and fundamentally control the outbreak and epidemic of sugarcane smut.[Conclusions]This study provides a basis for the effective prevention and control of catastrophic S.inferens and smut caused by extreme climate.

关 键 词：High temperature DROUGHT Sesamia inferens SMUT OUTBREAK 

分 类 号：S435.661[农业科学—农业昆虫与害虫防治]