Production interactions between combinations of 4 perennial legumes and 5 perennial grasses, grown under high input management with and without applications of nitrogen
Paper
Paper/Presentation Title | Production interactions between combinations of 4 perennial legumes and 5 perennial grasses, grown under high input management with and without applications of nitrogen |
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Presentation Type | Paper |
Authors | Smith, Rowan, Hall, Eric, Corkrey, Ross, Parsons, David, Pembleton, Keith and Rawnsley, Richard |
Journal or Proceedings Title | Proceedings of the 17th Australian Agronomy Conference (AAC 2015) |
Number of Pages | 4 |
Year | 2015 |
Place of Publication | Australia |
Web Address (URL) of Paper | http://www.agronomyaustraliaproceedings.org/images/sampledata/2015_Conference/pdf/agronomy2015final00422.pdf |
Web Address (URL) of Conference Proceedings | http://www.agronomyaustraliaproceedings.org/index.php/conference-2015-homepage/9-2015/560-2015indexalphaorder |
Conference/Event | 17th Australian Agronomy Conference 2015: Building Productive, Diverse and Sustainable Landscapes (AAC 2015) |
Event Details | 17th Australian Agronomy Conference 2015: Building Productive, Diverse and Sustainable Landscapes (AAC 2015) Parent Building Productive, Diverse and Sustainable Landscapes Event Date 20 to end of 24 Sep 2015 Event Location Hobart, Australia |
Abstract | The value of legumes in high input pastures has come into question in recent years. High sowing rates of grasses (> 20 kg/ha) and the regular use of nitrogen fertilisers are contributing factors to the declining composition of legumes in pastures. However, legumes can be an important component of a mixed pasture sward, through their ability to fix atmospheric nitrogen and their high nutritive value. This study evaluated the dry matter (DM) contribution of legumes to irrigated mixed swards receiving either a nil nitrogen or a 40kg N/ha nitrogen treatment following each defoliation event. The experiment was sown with 29 pasture treatments consisting of mixed swards and monocultures of 5 grass species (perennial ryegrass cv. Base, tall fescue Festuca arundinacea cv. Quantum II MaxP, coloured brome Bromus coloratus cv. Exceltas, cocksfoot Dactylis glomerata cv. Megatas and phalaris Phalaris hybrid cv. Advanced AT) and 4 legume species (white clover cv. Bounty, red clover Trifolium pratense cv. Rubitas, strawberry clover Trifolium fragiferum cv. Palestine and Caucasian clover Trifolium ambiguum cv. Kuratas). The clover contribution (%) to production increased significantly (P<0.05) in nil-nitrogen treatments compared with pasture mixes receiving nitrogen. The application of high rates of N fertilisers can inhibit significant contributions of legumes to overall production. White clover proved to be well adapted and the results of this study suggest it would difficult to justify the sole use of any alternative species tested. |
Keywords | Alternative pasture specie; DM yield; perennial legumes; pasture composition; clover |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300403. Agronomy |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Tasmanian Institute of Agriculture, Australia |
University of Tasmania |
https://research.usq.edu.au/item/yy607/production-interactions-between-combinations-of-4-perennial-legumes-and-5-perennial-grasses-grown-under-high-input-management-with-and-without-applications-of-nitrogen
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