Management of barley net blotch using Trichoderma asperellum (T34), eugenol, non-traditional compounds and fungicides

Egyptian Journal of Biological Pest Control

article

Hafez, Yaser¹  Abdelfatah, Amr²  El-Nashar, Faten²  Badr, Mahmoud³  Elkady, Sayed⁴ 

[1] EPCRS Excellence Center, Plant Pathology and Biotechnology Laboratory, Department of Agricultural Botany, Faculty of Agriculture, Kafrelsheikh University;Barley Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center;Department of Agricultural Botany (Plant Pathology Branch), Faculty of Agriculture, Kafrelsheikh University;Dept. of Agricultural Botany (Plant Pathology Branch), Faculty of Agriculture, Kafrelsheikh University

关键词: Barley net blotch;    Nano-selenium;    Potassium silicate;    Trichoderma asperellium;    Eugenol;   

DOI  :  10.1186/s41938-019-0179-8

学科分类：化学工程（综合）

来源: Springer

【 摘 要 】

Barley plants (cv. Giza 2000) are infected by Drechslera teres which causes net blotch disease symptoms and yield losses. Plants were treated with commercial molecular products such as Trichoderma asperilium (T34), eugenol compared to non-traditional compounds (potassium silicate, nano-selenium) and fungicides (Maven, Montoro, and Decent) which selected from 12 treatments according to their important effects on infected barley plants. Bio-arc, Tilt, Rush up, Curve, and Amisto treatments were left out because of their lower efficiency of some treatments and similarity of the active ingredients of some other of them. Disease severity (%) was significantlty decreased as a result of the selected treatments, except eugenol which showed less reduction than the control. Disease symptoms were suppressed and electrolyte leakage % was reduced significantly due to all treatments than the control treatment. As a consequence of treatments, endogenous reactive oxygen species (ROS) such as superoxide (O2−) was significantly elevated early after the inoculation, consequently, later on catalase (CAT), peroxidase (POX), and polyphenol oxidase (PPO) activities were increased significantly than the control. Elevated levels of O2− early after inoculation could play essential role in killing or suppressing the fungus and inhibiting disease symptoms as well as stimulated enzyme activities. Interestingly, the treatments were effective so that the yield characters (1000 K.W. and grain yield/plo) were increased significantly than the control treatment. These results indicated that the biological commercial product of Trichoderma asperilium 34 and non-traditional biological compounds in this research study are so effective and could be used as an alternative to fungicides.

【 授权许可】

CC BY