Saad Manee’s scientific contributions

This study was conducted at the Department of Plant Protection, College of Agriculture, Al-Muthanna University, Iraq. The factorial experiment included studying the effect of two factors: First one : Urea at concentrations of 0 , 10 and 10 mg/ L. dissolved in tap water. Second factor: Treated with Mycorrhiza (Glomusmosseae) in seeds of barley. A Completely randomized design (CRD) was used with four replicates and means were compared according to L.S.D. test at the level of 0.05. The results were summarized as follows: Mycorrhiza treatment was significantly superior in germination % , plant height, fresh and dry weight of shoots and roots (41.3%, 10.44 cm, 13.7g, 7.02 g, 18.5 g, and 10.13 g.plant-1), respectively as well as Urea treatment (0.25g.L-1) was significant and superior compared to other treatments in fresh weight of vegetative roots (6.5, 18.6 g.plant-1. Results also indicated that the interaction of Mycorrhiza with urea 0.25 g.L-1 had a significant increase in most of the studied indicators.

This study was conducted in the Plant Pathology Laboratory at the College of Agriculture, Al-Muthanna University, and aimed to assess the effect of the toxic filtrate of Trichoderma harzianum and the alcoholic extract of myrtle leaves on protecting the seeds and seedlings of the cucumber plant from infection with the fungus Rhizoctoni solani. Results showed that inhibiting the growth of the pathogenic fungus was achieved when 20% of alcoholic extract of Myrtus communis leaves gave the lowest diameter growth of R. solani at 10.34 cm 2 , while T. harzianum toxic filtrate was 18.76 cm 2 compared to the control treatment of 26.70 cm 2. Soaking of cucumber seeds with T. harzianum filtrate and alcoholic extract of M. communis did not affect the percentage of germination of cucumber seeds, while the damping-off percentage of seeds was 0.00%, whereas seed soaking treatments with the toxic filtrate of T. harzianum and alcoholic extract of M. communis in the presence of reduced virulent effect of R. solani. Results showed that the soaking of the seeds with the toxic filtrate of T. harzianum and the alcoholic extract of M. communis leaves and in the presence of the pathogenic fungus R. solani at a concentration of 20% had the highest length of shoots of healthy cucumber seedlings, reaching 10.55 and 10.90 cm, respectively, compared to the comparison. Also, the highest dry weight of healthy cucumber seedlings was 0.973 and 1.062 g, respectively, compared to the control treatment.