Effects on corn stalk rot field control and yield of four fungicides

doi:10.14088/j.cnki.issn0439-8114.2022.08.011

Abstract

Abstract: To screen effective fungicides to control the corn stalk rot, four fungicides were selected6% tebuconazole suspension seed coating agent, 350 g/L metalaxyl-M seed treatment emulsion, 25 g/L fludioxonil suspension seed coating agent and 10% azoxystrobin suspension seed coating agent. The field efficacy test of corn stem rot control was carried out by seed dressing method, and the yield was compared. The results showed that the four fungicides had apparent control effect at 2 doses, with extremely differences in different dose as the same fungicide. At the recommended high dose, the control effects of the four fungicides on corn stem rot were more than 80%, of which 10% azoxystrobin suspension seed coating had the highest control effect. The yield of 10% azoxystrobin suspension seed coating agent treated with 200 mL/100 kg seed was significantly higher than that of other treatments, reaching 14 086.67 kg/hm². In the production, it was suggested to rotate and mix pyrimethanil with the other three agents according to the recommended dosage of tebuconazole, metalaxyl-M, fludioxonil and azoxystrobin, taking the azoxystrobin as the main body, alternated or mixed with the other 3 fungicides.

Key words: fungicide, corn stalk rot, field control efficiency, yield

CLC Number:

ZHANG Jin-ying, HUANG Rong, WANG Mei-mei, HU Ci-yin, WANG Li-xiang, LI Jun-kai. Effects on corn stalk rot field control and yield of four fungicides[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(8): 66-68.

References

[1] 郭延景,肖海峰.基于比较优势的中国玉米生产布局变迁及优化研究[J/OL].中国农业资源与区划:1-12[2022-03-29].http://kns.cnki.net/kcms/detail/11.3513.S.20210607.1332.020.html.
[2] 王振营,王晓鸣.我国玉米病虫害发生现状、趋势与防控对策[J].植物保护,2019,45(1):1-11.
[3] 李菊,夏海波,于金凤.中国东北地区玉米纹枯病菌的融合群鉴定[J].菌物学报,2011,30(3):392-399.
[4] DING J J,GU X,LIU W,et al.First report of Pythium aristosporum causing corn stalk rot in China[J/OL].Plant disease,2021.doi:10.1094/PDIS-01-21-0164-PDN.
[5] 柳保贞.玉米细菌性茎腐病的发生与防控对策分析[J].农业开发与装备,2019(5):213,233.
[6] YU C,SARAVANAKUMAR K,XIA H,et al.Occurrence and virulence of Fusarium spp. associated with stalk rot of maize in North-East China[J/OL].Physiological and molecular plant pathology,2017.doi: 10.1016/j.pmpp.2016.12.004.
[7] ZHOU S,LIU Y,ZHANG M,et al.Comparison of the virulence and cognate virulence factors of multinucleate, binucleate and uninucleate Rhizoctonia isolates, causing sheath blight on maize plants[J].European journal of plant pathology,2016,145(2):501-506.
[8] 张红辉,石伟勇.种衣剂研究的新进展[J].种子,2002(2):40-41.
[9] 王雪,卢宝慧,杨丽娜,等.我国玉米种衣剂应用现状与发展趋势[J].玉米科学,2021,29(3):63-69,75.
[10] NYT2885—2016,农药登记田间药效试验质量管理规范[S].
[11] 邝平,李雪,徐贵昌,等.不同药剂防治柑橘溃疡病田间药效试验[J].现代农业科技,2021(15):100-101.
[12] 赵丽琨. 玉米茎腐病的发生原因与防治对策[J].种子科技,2020,38(1):103-104.
[13] 关淑艳,费建博,刘智博,等.分子标记辅助选择(MAS)在玉米抗逆育种中的应用[J].吉林农业大学学报,2018,40(4):399-407.
[14] 马庆凤,李成.玉米细菌性茎腐病的发生与防控[J].河南农业,2018(30):52-53.
[15] 王丽,石延霞,李宝聚,等.甲氧基丙烯酸酯类杀菌剂研究进展[J].农药科学与管理,2008(9):24-27.