کاهش بیماری پژمردگی ورتیسلیومی با به کارگیری فرآورده بیولوژیک Talaromyces flavus با روش مرسوم بهره‌برداران در مزارع سیب‌زمینی شهرستان همدان

Verticillium wilt disease is one of the most important potato diseases. Due to the fact that the agents of this disease (Verticillium dahliae and Verticillium albo-atrum) are soil-borne, its control by chemical methods is not easily possible. The use of soil inhibiting agents can be considered a suitable method. During the implementation of the previous research project on the possibility of reducing the occurrence of important fungal diseases of cotton caused by Verticillium dahliae and Rhizoctonia solani by using Talaromyces flavus biological products (liquid formulations, microcapsule suspension, powder microcapsule and talaromin), it was found that microcapsule suspension for products Cotton and tomato have been successful in terms of reducing the occurrence of the studied diseases and strengthening vegetative traits, including increasing yield, while its application method has been more accessible than the other two types of products. Regarding the implementation of this project for the potato product, first a preliminary study was conducted using the above four formulations and the most effective formulations in terms of reducing disease and increasing yield were liquid formulations and powder microcapsules, both of which were in the research-promotional project. were employed. In this project, with the cooperation of the promotion coordination management of Jihad Agricultural Organization of Hamedan province, a two-hectare farm in Hamedan city with a history of contamination with Verticillium wilt disease) to apply two effective formulations (powder microcapsule and liquid formulation) and compare them with The mode without application of formulation was selected. The comparison of the part with the application of each of the effective formulations of powder microcapsule and liquid formulation with the part without the application of the formulation was evaluated by t-test in terms of the percentage of occurrence of verticillium wilt disease, the percentage of severity of verticillium wilt disease and finally the yield rate. An economic comparison between the method of using the Talaromyces flavus biological product and the conventional method of the users has been made and included in the present final report. In this comparison, it was found that the effective formulations of liquid and microcapsule powder reduced the severity of the disease by 73.33 and 66.66%, respectively, compared to the condition without the use of any of the effective formulations (liquid and microcapsule powder) have caused.