Impact on crop performance of application timing of nitrogen fertiliser and interaction with harvest time
Paper
Skocaj, DM, Rigby, A, Park, G and Schroeder, BL. 2024. "Impact on crop performance of application timing of nitrogen fertiliser and interaction with harvest time." 45th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2024). Townsville, Australia 15 - 19 Apr 2024 Australia. Australian Society of Sugar Cane Technologists.
| Paper/Presentation Title | Impact on crop performance of application timing of nitrogen fertiliser and interaction with harvest time |
|---|---|
| Presentation Type | Paper |
| Authors | Skocaj, DM, Rigby, A, Park, G and Schroeder, BL |
| Journal or Proceedings Title | Proceedings of the 45th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2024) |
| Journal Citation | pp. 358-366 |
| Number of Pages | 9 |
| Year | 2024 |
| Publisher | Australian Society of Sugar Cane Technologists |
| Place of Publication | Australia |
| ISSN | 0726–0822 |
| Web Address (URL) of Conference Proceedings | https://www.assct.com.au/images/2024_Conference/2024_ASSCT_Conference_Proceedings.pdf |
| Conference/Event | 45th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2024) |
| Event Details | 45th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2024) Parent Australian Society of Sugar Cane Technologists Conference Delivery In person Event Date 15 to end of 19 Apr 2024 Event Location Townsville, Australia Event Description The 2024 conference holds special significance as it revolves around the theme of "Profitability, Sustainability, and Adaptability" This theme aptly reflects the ever-changing landscape of our industry and the crucial role that adaptability plays in navigating the challenges and opportunities that lie ahead. By embracing sustainability and adaptability we can secure a prosperous and resilient future for the sugar industry. |
| Abstract | In the Wet Tropics, fertilisation of early-harvested crops is often delayed as ratoons are slower growing and growers focus on land preparation, sugarcane planting operations and early crop establishment. However, as the harvest season progresses and the risk of experiencing high rainfall increases, fertilisation often occurs immediately behind the harvester. A trial was established on a clay loam soil at Tully to explore the impact of nitrogen (N) fertiliser application timing on a range of crop traits including N uptake, yield, and nitrogen-use efficiency (NUE). Treatments included three different application times (3-, 6- and 8-weeks post-harvest) and four N application rates (0, 80, 130 and 180 kg N/ha). An additional treatment (harvest time) was established in the second-ratoon crop. This allowed the effect of fertiliser application time to be assessed for ratoon crops established at different times of the harvest season (e.g, early versus late). There were statistically significant differences in crop traits associated with N rate and the timing of fertiliser application. For the early-harvested crop, there were no adverse effects on yields or NUE from delaying N fertiliser application up to 8 weeks after harvest. There was no statistically significant difference in yield or crop N uptake for fertiliser application timing in the late-harvested crop. The outcome of this research supports existing grower practices in the Wet Tropics region whereby fertiliser application is often delayed to crops harvested early in the season but applied immediately after harvesting crops ratooned late in the season. |
| Keywords | application timing; Wet Tropics; nitrogen; response |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 300407. Crop and pasture nutrition |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Sugar Research Australia, Australia |
| University of Southern Queensland |
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