Comparison of the Effectiveness of the Chemical Pesticides Promocarb and the Biopesticide Trichoderma Harizianum in Reducing the Incidence of Downy Mildow on Cucumber and its Reflection on the Production

Alisar shaabow(1)*, Nisreen Dib(1), Amal Haj Hasan(1), Ammar Askaria(1), and Rami Adra(1)

 (1). General Commission Agriculture scientific Research, Lattakia, Syria.

(*Corresponding author: Alisar Shaabow. E-Mail: alisar.nadeem@yahoo.com)

Received: 18/08/2022         Accepted: 7/09/2022

Abstract: 

The research was carried out at the agricultural scientific Center in Lattakia, within a 400 m2 greenhouse planted with cucumbers during 2022 spring, the research included four treatments: (Control, spraying with chemical pesticides: Rival, Pantix, and biopesticide: Trichoderma Harizianum), in order to study the effect of these treatments in reducing the incidence of Powny Mildow disease on cucumber, and its reflection on the production quantity. The results showed that all the tested pesticides were effective in reducing the severity of the disease compared to the control, and   the biopesticide T. Harizianum was the most efficient in reducing the severity of infiction by 70.50% compared to chemical pesticides, and it was 62.24, and 61.66% for Rival and Pantex, respectively, after a week of spraying, the results also showed the persistence of chemical pesticides for a longer period than biopesticide in reducing the severity of infection, and T. Harizianum treatment significantly outperformed the rest of the treatments, in terms of the average total number of fruits per plant, that it was 15.76fruits/plant, and the total production was 3232.32 kg/dunum.

Key words: Cucumber, Greenhouse, Powny Mildow, Chemical Pesticides, Biological control, Productivity. 

Full paper in Arabic: pdf