Boosting NUE in sugarcane through temporal and spatial management options
Final report 2014/045
MetadataShow full item record
This collaborative project involved the University of Southern Queensland (USQ) and the Sugar Research Australia (SRA) Technology Unit. It aimed to evaluate methods of matching nitrogen (N) supply (from soils and fertilisers) with crop N uptake and crop needs. It was conducted with cognizance of the industry’s production goal of 36 million tonnes of sugar per annum, and water quality targets for the Great Barrier Reef lagoon set by government and environmental groups. The project methodology comprised several discrete yet linked activities. The basic tenets of various N management strategies were reviewed. Several long-term N management trials that had previously been established in various districts were continued to provide essential background information. Additional field trials and pot experiments were established to assess N fertiliser formulations, uptake of N fertiliser and/or temporal aspects of N management. Adjustments to the N guidelines were considered in terms of existing evidence. A mechanism for incorporating future research outcomes and outputs into the SIX EASY STEPS nutrient management program was developed. An overarching objective was to subject trial and experimental results to multi-facetted evaluations by means of agronomic, economic and/or environmental assessments. The SIX EASY STEPS program continues to be recognised as the basis for best practice nutrient management in the Australian sugar industry. Trial results have indicated that the SIX EASY SYEPS guidelines are generally appropriate. However, scope exists for fine-tuning of N application rates for specific circumstances. This will be best achieved via STEPS 5 and 6 of the SIX EASY STEPS program. Nitrogen use efficiency (NUE) indicators are useful for alerting growers and/or advisors to inefficiencies or circumstance where alternative on-farm management are worth considering, but that are not appropriate for determining N application rates per se. Enhanced efficiency fertilisers, such as DMPP-coated urea and poly-coated urea, offer promise to improve NUE. However, their use will probably be limited to situations where N losses (by leaching and/or denitrification) are more likely. The flexibility of the SIX EASY STEPS program allows the component N guidelines to be amended and/or revised as new information becomes available. This also relates to the delivery channels, especially via the SIX EASY STEPS short course program and decision support tools such as NutriCalcTM. In particular, the formation of the SIX EASY STEPS Advisory Committee will provide a mechanism for additional nutrient management strategies to be incorporated in the program in future.
Please use this identifier to cite or link to this itemhttps://hdl.handle.net/11079/17966
Contact Us | Send Feedback
- © Sugar Research Australia Limited 2015
- Copyright in this document is owned by Sugar Research Australia Limited (SRA) or by one or more other parties which have provided it to SRA, as indicated in the document. With the exception of any material protected by a trade mark, this document is licensed under a Creative Commons Attribution-NonCommercial 4.0 International licence (as described through this link). Any use of this publication, other than as authorised under this licence or copyright law, is prohibited.
- http://creativecommons.org/licenses/by-nc/4.0/legalcode - This link takes you to the relevant licence conditions, including the full legal code.
- In referencing this document, please use the citation identified in the document.
- In this disclaimer a reference to "SRA" means Sugar Research Australia Ltd and its directors, officers, employees, contractors and agents.
- This document has been prepared in good faith by the organisation or individual named in the document on the basis of information available to them at the date of publication without any independent verification. Although SRA does its best to present information that is correct and accurate, to the full extent permitted by law SRA makes no warranties, guarantees or representations about the suitability, reliability, currency or accuracy of the information in this document, for any purposes.
- The information contained in this document (including tests, inspections and recommendations) is produced for general information only. It is not intended as professional advice on any particular matter. No person should act or fail to act on the basis of any information contained in this document without first conducting independent inquiries and obtaining specific and independent professional advice as appropriate.
- To the full extent permitted by law, SRA expressly disclaims all and any liability to any persons in respect of anything done by any such person in reliance (whether in whole or in part) on any information contained in this document, including any loss, damage, cost or expense incurred by any such persons as a result of the use of, or reliance on, any information in this document.
- The views expressed in this publication are not necessarily those of SRA.
- Any copies made of this document or any part of it must incorporate this disclaimer.