RP120C SRA Nutrient Use Efficiency
A suite of 5 projects that aim to improve Nitrogen Use Efficiency (NUE) in sugarcane production in Great Barrier catchments of Wet Tropics, Burdekin and Mackay Whitsundays. These projects will assist the industry to adopt more precise agriculture practices that deliver productivity, profitability and water quality outcomes.
1. Improving NUE for sugarcane crops with constrained yield potential. This project aims to better match N fertiliser application rates to the achievable yield potential of a block as influenced by specific soil chemical and physical properties, time of harvest and differences in crop management practices.
2. Decision support for informed nitrogen management: Soil nitrogen mineralisation tests and assessment of soil N contribution to crop N requirements. This project will investigate the contribution of soil N to crop performance and crop N accumulation, with a view to developing a robust indicator of potential in-season mineralisation in different soils and climates.
3. Spatially explicit estimation of Achievable Yield Potential – An improved basis for fertiliser management. This project will provide an estimation of yield potential at scales appropriate to the on-farm management of N fertiliser and consequent improvements to NUE at block, farm, regional and industry scales.
4. Improving management practices of legume crop residues to maximise economic and environmental benefits. This project will investigate a suite of N-efficient legume residue management strategies through manipulating legume N mineralisation (release), capturing excess mineral N, or inhibiting formation of the mobile and vulnerable nitrate N.
5. How much N will that crop need? Incorporating climate forecasting to improve nitrogen management in the Wet Tropics. This project uses the well-founded link between the Southern Oscillation Index and spring and summer rainfall to produce good estimates of yield potential at the spatial scale of the productivity unit, and how that estimate varies with seasonal conditions to determine the optimal amount of N to apply in wet and dry years and on high and low yielding crops.
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Metadata last updated on 2018-12-17 15:25:25.0