Effect of Locations and Seedbank Depth on the Germination and Differentiations of Weeds

A study to investigate the seed bank weed densities at the Studied Six Locations [ EL- Goygab, Shahaat, EL – Faydia , EL-Baida , EL-Maraj and Solooqe ] due to the soil depth [ 0 – 5 ,5 – 10, 10 – 15 and 15 – 20cm from the soil surface]. Number of the grasses and broad leaved weeds in autumn 2016 by 3 samples from each Loation distribute in the woody sequare 0.5 m2 and with height of 2.5 cm and irrigated as needed. Seedlings of both weeds type recorded during January 2017 . The experiment analysied by split plot design with three replicates, Where Locations represent the main plots and the soil depeth the subplots. The results showed a significant difference in seedling densities regarding to the Locations, the greatest of grass weeds seedling number 19.32 was from EL-Baida and 33.32 of broad leaved weeds seedling from EL-Maraj meanwhile, the least Number (2.68 and 5.32) of grasses and broad leaved weeds seedlings respectively resulted at Shahaat. The depth 0 – 5 cm recorded the highly significant increase of seedlings count of both weeds type ,29.76 and 30.44 seedling per sample of grasses and broad leaved types, respectively, comparing ed with to the least from the depth 15 – 20 cm. The interaction of situations depth effect showed highly significant differences in both weed types, the highest density 49.32 of grass weeds resulted from 0 – 5 cm depth in EL-Baida and of broad leaved weeds 66.60 seedling in the same depth in EL-Maraj, However, to the least of both weed types in all locations 15 – 20 cm depth.