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Sustainable management of bacterial wilt of tomato using dried powder ofXanthium strumariumL.

文献类型： 外文期刊

作者： Khan, Raja Asad Ali 1 ; Ahmad, M. 1 ; Naz, I 1 ; Najeeb, S. 1 ; Yanlin, L. 2 ; Alam, S. S. 1 ;

作者机构： 1.Univ Agr, Dept Plant Pathol, Peshawar, Khyber Pakhtunk, Pakistan

2.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Grad Sch, Beijing, Peoples R China

3.Hunan Agr Univ, Coll Hort & Landscape, Changsha, Hunan, Peoples R China

关键词： Integrated disease management; Area under the disease progress curve; Soil amendment; Organic agriculture; Ralstonia solanacearum

期刊名称：JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.729； 五年影响因子：1.681 ）

ISSN： 1125-4653

年卷期： 2020 年 102 卷 2 期

页码：

收录情况： SCI

摘要： Because of its known anti-bacterial properties, we explored the potential ofXanthium strumarium, an invasive, enormous mass-producing weed, for the control ofRalstonia solanacearumwhich causes bacterial wilt (BW) of tomato. Both in-vitro andin-plantaexperiments were conducted, using different concentrations of the dried powders of the plant parts applied to infested soil at different times. Addition of a 20% (w/v) aqueous extract of leaf powder or succulent shoot powder to wells cut in nutrient agar inhibited growth ofR. solanacearum. Inin-plantaexperiments, 4.5% (w/w) leaf powder applied to artificially infested soil 10 days before transplant (DBT), produced the best effect and enhanced root length, shoot length, and plant fresh bio-mass by 64%, 37%, and 42%, respectively, as compared to inoculated control. Leaf powder also lowered the area under disease progress curve (AUDPC) by 38%, and the pathogen counts (g(-1)dry soil) by 1.202 log(10)units. Succulent shoot powder (4.5% w/w) applied 20 DBT proved to be better than other application times and increased root length, shoot length, and plant fresh bio-mass by 55%, 42%, and 57%, respectively, as compared to inoculated control. Succulent shoot powder also decreased AUDPC by 35%, and the pathogen counts (g(-1)dry soil) by 1.294 log(10)units. Our data strongly suggest that 4.5% (w/w) of leaf or succulent shoot powder, applied 20 DBT, can be an effective component of the integrated disease management (IDM) against BW.

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