An integrated approach to managing Rhizoctonia solani on maize in marginal soils: field studies

A study was conducted over two seasons in a marginal soil with an acid saturation of 54%. A plant growth promoting rhizobacterium, Bacillus megaterium, a commercial biocontrol agent, Trichoderma harzianum Strain kd (Eco-T ® ), and soluble potassium silicate were used in this study. The objective was...

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Published inArchiv für Phytopathologie und Pflanzenschutz Vol. 51; no. 7-8; pp. 373 - 386
Main Authors Kubheka, Bongani Petros, Laing, Mark Delmege, Yobo, Kwasi Sackey
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 09.05.2018
Taylor & Francis Ltd
Subjects
Acidic soils
Biological control
Corn
Crop yield
Fungi
maize
PGPR
Plant growth
Potassium
potassium silicate
Potassium silicates
Rhizoctonia solani
Root rot
Trichoderma harzianum
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Summary:A study was conducted over two seasons in a marginal soil with an acid saturation of 54%. A plant growth promoting rhizobacterium, Bacillus megaterium, a commercial biocontrol agent, Trichoderma harzianum Strain kd (Eco-T ® ), and soluble potassium silicate were used in this study. The objective was to control maize yield reduction caused by Rhizoctonia solani AG2 root rot isolated from infected maize. R. solani reduced maize yields significantly by 34% in the first season. However, the losses decreased in the second season from 34% to 10%. In the first season, combination of T. harzianum, B. megaterium and potassium silicate increased maize yields by 130%. The highest yield in the presence of R. solani was treatments with T. harzianum (216%) followed by T. harzianum plus potassium silicate (214%) and lastly T. harzianum plus B. megaterium (178%). However, in the second season, T. harzianum plus potassium silicate treatment resulted in the highest yields.
ISSN:0323-5408
1477-2906
DOI:10.1080/03235408.2018.1484329