17. Dieback disease of Dalbergia sissoo trees of some major areas of district Swabi

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Gulnaz Parveen, Sidra Zain, Zubia Rahim Ghulam Rasul


A survey of various areas of District Swabi including Saleem Khan, Nogram and Gulo Dheri was carried out in different seasons to find out the disease of Dalbergia sissoo. Different parts of the plant like roots, barks and leaves were collected and analyzed for disease causative agents and data was recorded. Maximum infection percentage of Fusarium sp., including Fusarium solani (55.55%), Fusarium oxysporum (55.55%) and Rhizoctonia solani (66.66%) was reported in roots of Dalbergia tree located in the area of Saleem Khan, Swabi. While the bark and leaves of the Delbergia trees were found infected with Macrophomina phaseolina, showing maximum infection percentage (77.77%) in the area of Saleem Khan Swabi. Similarly the infection percentage of Macrophomina phaseolina was observed maximum in roots, barks and leaves i.e. 88.88%, 55.55% and 77.77% respectively in the region of Nogram swabi. The site examined like Gulo Dheri shows that the infection percentage of Macrophomina phaseolina was highest in roots (88.88%) and leaves (100%) while the infection percentage of Rhizoctonia solani was highest in bark (77.77%).

Keywords: Fusarium sp; Infection; Pathogens; Sheesham; Survey


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