Publication Date
1993
Description
A field experiment examined seed production and autumn germination of subterranean clovers (Trifolium subterraneum L.) In an area of New Zealand with a mean annual rainfall of 62S mm and dry summers. In the fourth autumn, out of 42 accessions, only 10 produced more than the 1000 seedlings/m2 and had seed reserves in excess of the 240 kg/ha considered necessary for success. Of the named cultivars only the early-flowering cv. Geraldton exceeded these thresholds whereas cv. Seaton Park, Woogenellup, Mount Barker and Tallarook did not. All lines had In excess of 50% hard seed 3 weeks after the autumn break. It is concluded that in southern New Zealand an early' or early-mid-season flowering subterranean clover is required which sets sufficient seed to offset the inevitably high level of hardseededness still present in the autumn.
Citation
Smetham, M L.; Hines, S; and Jack, D W., "Seed Production and Autumn Germination as Determinants of the Success of Subterranean Clover in a Cool Temperate Environment" (2024). IGC Proceedings (1993-2023). 35.
https://uknowledge.uky.edu/igc/1993/session11/35
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Seed Production and Autumn Germination as Determinants of the Success of Subterranean Clover in a Cool Temperate Environment
A field experiment examined seed production and autumn germination of subterranean clovers (Trifolium subterraneum L.) In an area of New Zealand with a mean annual rainfall of 62S mm and dry summers. In the fourth autumn, out of 42 accessions, only 10 produced more than the 1000 seedlings/m2 and had seed reserves in excess of the 240 kg/ha considered necessary for success. Of the named cultivars only the early-flowering cv. Geraldton exceeded these thresholds whereas cv. Seaton Park, Woogenellup, Mount Barker and Tallarook did not. All lines had In excess of 50% hard seed 3 weeks after the autumn break. It is concluded that in southern New Zealand an early' or early-mid-season flowering subterranean clover is required which sets sufficient seed to offset the inevitably high level of hardseededness still present in the autumn.
