Alisar shaabow(1)*, Nisreen Dib(1), Majida Mofleh(1), Riad Zidan(2), , Amal Haj Hasan(1), Ammar Askaria(1), Lina Adra(1) and Nirmin Sakoor(1)
(1). General Commission for scientific Agriculture Research, Lattakia, Syria
(2). Department of Horticulture, Faculty of Agriculture Tishreen University, Lattakia, Syria.
(*Corresponding author: Dr. Alisar Shaabow. E-Mail: alisar.nadeem@yahoo.com)
Received: 24/01/2022 Accepted:6/06/2023
Abstract:
The research was carried out at Alsonawbar station of the Agricultural Scientific Research Center in Lattakia in the spring of 2021, the research included six treatments (control, spraying with fungicides: Ranman, Moximate, and biological control agents: Bacillus subtilis, Beauveria bassiana, Trichoderma harizianum) in order to compare the effect of using chemical pesticides with the effectiveness of some beneficial microorganisms in enhancing the systemic acquired resistance of potato against early blight Alternaria solani and its reflection on growth and production of potato. Results showed that treating pesticide plants by spraying fungicide moximate led to reduction in the severity and percentage of infection, they reached 14.05% and 32% respectively after two weeks of treatment, which was less than the control treatment by 20.92 and 17% respectively; and by following up the effect of early blight on the foliage, results showed that Beauveria bassiana treatment was the best, that after 100 days of planting it recorded 8430.75 cm2/plant for the foliage area, and the leaf area index was 3.45 m2/m2 ; while Bacillus subtilis treatment exceeded other treatments in terms of the numbers of tubers, productivity per unit area, and marketing production, which reached: 11.6 tuber/plant, 990.6 g/plant, 3877 kg/donum, respectively.
Key words: Potato, Alternaria solani, Chemical Control, Biological Control, Systemic Acquired Resistance, Productivity.
Full paper in Arabic: pdf