Publication Date
1997
Description
Oversown seeds of subterranean clover (Trifolium subterraneum L.), strawberry clover (T. fragiferum L.) and caucasian clover (T. ambiguum Bieb.) were monitored for 40 days to identify the stage of development at which the seed of these temperate pasture legumes failed at varying moisture levels. Intact sods of glyphosate-sprayed pasture were taken to a glasshouse, subjected to factorial combination of three soil surface moisture levels (low, medium, high) and three legume species. Overall, 70, 52 and 31% of seed of subterranean, strawberry and caucasian clovers,respectively, produced a visible radicle or seedling. The greatest loss of potential seedlings occured following imbibition and prior to germination. The order of decreasing germination, subterranean>strawberry>caucasian, reflected the order for decreasing seed size and seed vigour. Radicle death only occurred at low soil surface moisture and seedling death occurred mainly at high soil surface moisture.
Citation
Awan, M H.; Kemp, P D.; Barker, D J.; and Choudhary, M A., "Development and Fate of Seedlings of Three Temperate Legumes Following Oversowing" (2024). IGC Proceedings (1993-2023). 19.
https://uknowledge.uky.edu/igc/1997/session22/19
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Development and Fate of Seedlings of Three Temperate Legumes Following Oversowing
Oversown seeds of subterranean clover (Trifolium subterraneum L.), strawberry clover (T. fragiferum L.) and caucasian clover (T. ambiguum Bieb.) were monitored for 40 days to identify the stage of development at which the seed of these temperate pasture legumes failed at varying moisture levels. Intact sods of glyphosate-sprayed pasture were taken to a glasshouse, subjected to factorial combination of three soil surface moisture levels (low, medium, high) and three legume species. Overall, 70, 52 and 31% of seed of subterranean, strawberry and caucasian clovers,respectively, produced a visible radicle or seedling. The greatest loss of potential seedlings occured following imbibition and prior to germination. The order of decreasing germination, subterranean>strawberry>caucasian, reflected the order for decreasing seed size and seed vigour. Radicle death only occurred at low soil surface moisture and seedling death occurred mainly at high soil surface moisture.
