The Influence of Treatment of Some Vegetable Seeds by OxygenatedMetia on Germination Characteristics and Seedling Quality

This study was conducted to evaluate the effect of pepper (pipiemento variety), and eggplant (Dara variety) seed's treatment on germination characteristics, and the impact of eggplant seeds treatment on seedling quality. The seeds were treated for 24 hours in glass containers, in which the ratio of seeds to the applied media was 1:5, the concentration of the mineral solution was 0.1%, while the concentration of each of GA3 and the organic nutrient solution was 0.01%. The media were continuously aerated by passing a current of pure oxygen (O2), at sufficient pressure to homogenously mix the seeds in the media. The seeds were dried up after 24 hours of treatment to remove the excess moisture. Seeds were germinated in Petri dishes, and soil-full containers to assess the germinability, and seed vigor. The eggplant seeds were also sown in peat-moss containing pots (8 cm indiameter) to study the influence of treatment on seedling quality. The results showed that treatment efficiency depends on the nature of the used media, and crop. In addition, it has been revealed that the aeration of media enhanced the germination, accelerated the seedling growth, and improved their quality.

Effect of some organic mediums on seedling production of Zinnia (Zinnia elegans) and Stock (Matthiola incana)

The present investigation was carried out at the nursery of Agricultural faculty- Tishreen University, during 2016-2017, to evaluate the best organic culture medium for the seedling production of Zinnia (Zinnia elegans) and Stock (Matthiolaincana) with the lowest costs. Seven different mediums were experimented (Turf, waste mushroom compost, farm waste compost and their combinations). The results showed some differences in chemical and physical characters of experimented mediums. This differences had an impact on germination parameters (seed germination percentage, speed of germination, daily germination) and seedling quality (seedling length, collar diameter, fresh and dray weight, percentage of dray matter). The results indicated the mediums consisting of turf (T1), waste mushroom compost with turf (T6) and waste mushroom compost with farm waste compost (T7) gave the best germination rate and the highest quality of seedling. Data showed as well that T3 and T7 treatments realized the lowest costs and higher economic profit than other treatments.