The research was conducted in the Azaz area, located in northern Syria, about 48 km north of Aleppo City, and about 5 km from the Turkish border. The aim was to study the effect of treatment with some biological compounds (Trichoderma fungi and Penicillium fungi) and organic compounds (Seaweed) on the growth and productivity of cucumber crop (AZ55F1 variety) and to determine the best-studied treatments. The semi-field cultivation method was adopted, and 5-liter agricultural pots were used. Four treatments were used in the study (three experimental treatments + control treatment), and each pot was considered a replicate, and five replicates represented each treatment. All treatments were distributed according to a completely randomized design (CRD).

The results showed that all treatments used in the study (Trichoderma fungus, Seaweed, Penicillium fungus) were superior to the control in all studied traits (length, diameter, size, and weight of the fruit, number of fruits per plant, and productivity of the plant). There were no significant differences between the experimental treatments (Trichoderma fungus, Seaweed, Penicillium fungus) in the traits of length and diameter of the fruit and number of fruits per plant. The treatment with Trichoderma fungus was significantly superior to the Seaweed and Penicillium treatments in the trait of fruit size and weight and total productivity per plant. The Seaweed treatment was significantly superior to the treatment with Penicillium fungus in the trait of fruit size. In conclusion, the different treatments (Trichoderma fungus, Penicillium fungus, Seaweed) achieved an increase in productivity of 78.95%, 53.85%, and 50.97%, respectively, compared to the control.