Publication Date
1997
Description
Perennial grassy weeds of grasslands are usually characterised by substantial and long lived soil seedbanks. A comparison of the potential seed production and accession into the seedbanks of giant Parramatta grass (Sporobolus indicus var. major (Buse) Baaijens) and Chilean needle grass (Nassella neesiana (Trin. & Rupr.) Barkworth) revealed big differences in their potential annual seed production and in the proportion being incorporated into the seedbank. The potential seed production of giant Parramatta grass was about 668,000 seeds m-2 and only about 0.3% of these were incorporated into the seedbank. The figures for Chilean needle grass were 22,000 seeds m-2 and 42% respectively. Knowledge of these differences as well as other aspects of seedbank dynamics are essential for effective grassy weed management in grasslands.
Citation
Whalley, R.D B.; Andrews, T S.; and Gardener, M R., "The Accession of Grassy Weed Seeds into the Soil Seedbank of Grasslands" (2024). IGC Proceedings (1997-2023). 13.
https://uknowledge.uky.edu/igc/1997/session13/13
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
The Accession of Grassy Weed Seeds into the Soil Seedbank of Grasslands
Perennial grassy weeds of grasslands are usually characterised by substantial and long lived soil seedbanks. A comparison of the potential seed production and accession into the seedbanks of giant Parramatta grass (Sporobolus indicus var. major (Buse) Baaijens) and Chilean needle grass (Nassella neesiana (Trin. & Rupr.) Barkworth) revealed big differences in their potential annual seed production and in the proportion being incorporated into the seedbank. The potential seed production of giant Parramatta grass was about 668,000 seeds m-2 and only about 0.3% of these were incorporated into the seedbank. The figures for Chilean needle grass were 22,000 seeds m-2 and 42% respectively. Knowledge of these differences as well as other aspects of seedbank dynamics are essential for effective grassy weed management in grasslands.
