Effect of temporal nitrogen-management strategies on sugarcane production in sub-tropical Queensland - A complete crop cycle

Paper

Panitz, JH and Schroeder, BL. 2021. "Effect of temporal nitrogen-management strategies on sugarcane production in sub-tropical Queensland - A complete crop cycle." Allsopp, P. (ed.) 42nd Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2021) . Bundaberg, Australia 21 - 23 Apr 2021 Australia. Australian Society of Sugar Cane Technologists.

Paper/Presentation Title	Effect of temporal nitrogen-management strategies on sugarcane production in sub-tropical Queensland - A complete crop cycle
Presentation Type	Paper
Authors	Panitz, JH and Schroeder, BL
Editors	Allsopp, P.
Journal or Proceedings Title	Proceedings of the 42nd Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2021)
Journal Citation	42, pp. 260-267
Number of Pages	8
Year	2021
Publisher	Australian Society of Sugar Cane Technologists
Place of Publication	Australia
Web Address (URL) of Paper	https://sugarresearch.com.au/wp-content/uploads/2024/12/Paper-9.-2020_Panitz-Schroeder-2.pdf
Conference/Event	42nd Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2021)
Event Details	42nd Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2021) Parent Australian Society of Sugar Cane Technologists Conference Delivery In person Event Date 21 to end of 23 Apr 2021 Event Location Bundaberg, Australia Event Venue Bundaberg Multiplex Sports & Convention Centre
Abstract	Although the nitrogen (N) guidelines within the SIX EASY STEPS program are robust and applicable for most soils and circumstances, opportunities exist for fine-tuning the N application rates using temporal management strategies. These include split applications and use of enhanced-efficiency fertilisers (EEFs). This paper reports on the overall outcomes of a temporal-N trial conducted over a crop-cycle in southern region of the Australian sugar industry. Reports have indicated that EEFs have the best chance of contributing to improved productivity, profitability and NUE in sugarcane, when soils are subject to extended wet periods. Although the trial described here was located on an usually well-drained site, different seasonal climatic conditions enabled assessments under different conditions. Sugarcane yield responses to the different temporal-N strategies compared to the use of standard urea applied as single applications each season were essentially absent across the crop cycle on this relatively high-fertility-status soil. However, no single temporal N strategy was superior to the others. Mean partial net return (PNR) values for the crop cycle showed that the best return on applied N was associated with a standard urea applied at a rate of 120 kg N/ha in a single application in each season (standard treatment). Losses in mean partial net returns ($/ha/year) of each treatment relative to the standard treatment showed that similar mean PNR values resulted from standard urea applied at 160 kg N/ha and DMPP-urea applied at both rates (120 and 160 kg N/ha). Split applications of urea generally resulted in lower PNRs compared to the standard treatment. Application of PC-urea (both rates) was the least profitable at the trial site. Further results from EEF evaluations being undertaken by others may shed light on the advantages of temporal management strategies on sugarcane production on soils that are normally found in imperfectly drained conditions in bottomland positions. © 2021 42nd Australian Society of Sugar Cane Technologists Conference 2021, ASSCT 2021. All rights reserved.
Keywords	Sugarcane, temporal nitrogen management, split applications, enhanced-efficiency fertilisers
Contains Sensitive Content	Does not contain sensitive content
ANZSRC Field of Research 2020	300202. Agricultural land management
	300403. Agronomy
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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