https://hdl.handle.net/1959.11/52361
Title: | Premier Digit and Progardes Desmanthus compete effectively for applied phosphorus under mixed sward conditions |
---|---|
Contributor(s): | McLachlan, Jonathan W (author)![]() ![]() ![]() |
Publication Date: | 2022-09 |
Open Access: | Yes |
Handle Link: | https://hdl.handle.net/1959.11/52361 |
Open Access Link: | https://www.agronomyaustraliaproceedings.org/index.php/2022/49-2022/781-2022-index![]() |
Abstract: | Grasses generally dominate the pastures of northern Australia. This may be associated, in part, with varietal differences in critical phosphorus (P) requirements that influence the competitive ability and persistence of the legume component. However, the effect of plant competition on shoot yield responses to soil P supply remain unquantified in tropical pasture swards. Micro-swards of Premier Digit and Progardes Desmanthus were grown, both as monocultures and mixed plantings, in soil amended with five rates of P fertiliser to determine the influence of sward conditions on shoot yield and tissue P. The shoot yield and tissue P concentrations of both species increased in response to soil P supply, with the shoot yield of Progardes Desmanthus in mixed plantings representing between 33–47% of the total yield of Digit and Desmanthus combined. The critical external P requirements of Progardes Desmanthus were generally equal to or lower than that of Premier Digit, yet both species competed effectively for applied P. Therefore, Premier Digit and Progardes Desmanthus may be suitable companion pasture species for establishment in the low-P soils of northern Australia. |
Publication Type: | Conference Publication |
Conference Details: | AAC 2022: 20th Agronomy Australia Conference, Toowomba, Australia, 18th - 22nd September, 2022 |
Source of Publication: | System Solutions for Complex Problems: Proceedings of the 20th Australian Agronomy Conference, v.Pastures, p. 1-4 |
Publisher: | Australian Society of Agronomy Inc |
Place of Publication: | Toowoomba, Australia |
Fields of Research (FoR) 2020: | 300407 Crop and pasture nutrition 300403 Agronomy 410604 Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
Socio-Economic Objective (SEO) 2020: | 100505 Sown pastures (excl. lucerne) |
Peer Reviewed: | Yes |
HERDC Category Description: | E1 Refereed Scholarly Conference Publication |
Appears in Collections: | Conference Publication School of Environmental and Rural Science |
Files in This Item:
File | Description | Size | Format |
---|
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.