An Investigation of the Effects of Seed Depth and Rainfall Rates on the Characteristics of Brome (Bromus rigidus Roth)
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Bromus Rigidus Roth., Rates of Rain., Depth of Seed., Interaction., Brome Weeds., Al Jabal Al Akhdar Libya.
Abstract
This study was conducted over six months during the wheat-growing season in the Green Mountain region of Libya, an area characterized by varying rainfall levels. A factorial design was employed to examine the effects of seed burial depth and rainfall levels on the growth and productivity of Bromus rigidus Roth. Seeds were sown at depths of 0 cm, 1 cm, 5 cm, and 10 cm under three rainfall levels (250 mm, 350 mm, and 500 mm per year). Results indicated that seeds buried at a depth of 5 cm achieved the highest productivity in terms of dry weight and seed yield, while no germination occurred at a depth of 10 cm, likely due to oxygen deficiency. Rainfall levels significantly influenced plant growth, with the highest productivity recorded at 500 mm per year. The interaction between seed depth and rainfall level revealed that a depth of 5 cm combined with 500 mm per year of rainfall was optimal for achieving superior germination, growth, and seed production. These findings provide insights into the ecological adaptability of Bromus rigidus and its management in arid and semi-arid regions.
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