Lucky bamboo (Dracaena sanderiana) plants showing stem and leaf spots symptoms of each observed season were monitored during a survey that was conducted in four periods from 2018 to 2019. There were significant differences between the four periods, as well as the mean percentages of infection and disease severity were high (45.92, 44.41 % and 46.15, 55.67%, respectively) During the first (March-May) and third (August-October) study periods in 2018. The same disease symptoms occurred at the same time of observation during 2019 in the several surveyed nurseries, and the percentage of infection and disease severity recorded were in the same trend. There were twelve different fungal pathogens identified as Absidia spinosa, A. Cylindrospora, Alternaria alternata, Aspergillus flavus, A. niger, A. terreus, Aspergillus sp., Colletotrichum gloeosporioides, Fusarium avenaceum, F. oxysporum, F. solani, and Trichoderma harzianum where Colletotrichum gloeosporioides was the most common (26.93 and 26.34 for leaves and stems, respectively). The pathogenicity tests were carried out, where C. gloeosporioides were the most aggressive. The systemic fungicide Kemazed ® and biocontrol agents were demonstrated to be effective in controlling three of the most common aggressive fungi. i.e., C. gloesporioides, F. Oxysporum and A. alternata, In vitro colony growth of fungal isolates was significantly reduced as compared to the untreated control. The bioagents tested had significant antagonistic activity against C. gloesporioides growth on bamboo in a vase, according to the results, with Kemazed ® showing the most consistent highest inhibition effect, followed by Rhizo-N ® and Plant Guard ® , respectively, when compared to the untreated control.

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This study was planned to evaluate biocides, elicitors and essential oils as alternative agents to fungicides against root rot and wilt diseases of wormwood plants. Fusarium oxysporum, F. semitectum, F. solani, Macrophomina phaseolina, Pythium ultimum and Rhizoctonia solani were isolated from infected plants with root and stem rot and wilt diseases. Infected plants were collected from different localities of Qaluobiya governorate. Fusarium oxysporum, F. solani and R. solani were the most pathogenic fungi to A. santonicum unrooted cuttings in pathogenicity trials, while F. solani and P. ultimum were the most pathogenic fungi to A. absinthium unrooted cuttings. Also, both Artemisia species were infected by other isolated fungi. In vitro study showed that garlic essential oil and elicitor (H2O2) were the most active treatments against all tested fungi. Under greenhouse conditions, carbendazim (fungicide) and H2O2 completely prevented infection of A. santonicum rooted and unrooted cuttings in the presence of F. oxysporum. Also, carbendazim (fungicide) and H2O2 completely prevented infection of A. absinthium rooted and unrooted cuttings in the presence of P. ultimum. Bio-Cure F and garlic essential oil were superior treatments to improve plant growth parameters (plant height, number of branches and fresh and dry weights), also, Bio-Cure F and H2O2 were the best treatments in improving essential oil yield of both Artemisia species. In conclusion, using any of Bio-Cure F (biocide) or H2O2 or garlic essential oil as safe alternative to fungicide agents against root rot and wilt diseases to plants of Artemisia absinthium and A. santonicum is preferable.