Document Type : Articles
Authors
1 Department of Plant Protection ,College of Agriculture ,University of Tikrit, Tikrit, Iraq
2 Department of Biology ,College of Education, University of Samarra, Samarra, Iraq
3 Department of Plant Medicine, College of Agriculture-Elshatby, University of Alexandria, Alexandria, Egypt
Abstract
The study aimed at evaluating the efficiency of Bacillus subtilis bacterium, Ganoderma lucidum fungus, and Spirulina platansis alga extract on two varieties (Barcelona and a local variety) of Broad bean plants in an attempt to reduce the negative impact of yellow mosaic virus on broud bean (BYMV) through stimulating plant systemic resistance. The results obtained showed significant effects of the biocontrol agents investigated in reducing the severity of infection and increasing growth parameters of the treated plants in both individual and combinational treatments. The triple combinational treatment with Barcelona variety achieved a significant difference in reducing the severity of infection by 16.17% as compared with that of the corresponding treatment with the local variety. Additionally, a significant increase in growth parameters including, plant height, leaf area, chlorophyll ratio, and fruit setting ratio of 42.33 cm, 44.77 cm2, 55.56 SPAD-502 meter readings, and 22.56%, respectively, was observed.
Keywords
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