Nutrients and Fertility 

This theme includes conference papers from the conference sessions Nitrogen management in systems, Organic amendments for improved nutrition, Phosphorus management, and Reducing N losses.

Can poultry litter supply adequate P nutrition to irrigated cotton in an alkaline Vertosol?
Rakesh Awale, John Hornbuckle, and Wendy C. Quayle

Cropping intensity and crop choice influence long-term mineral N cycling and balance within north-eastern farming systemsand balance within north-eastern farming systems
Jon Baird, Matt Dunn, Jayne Gentry, Andrew Erbacher, Lindsay Bell, Andrew Verrell, Andrew Zull, David Lawrence, Darren Aisthorpe, Greg Brooke, Kaara Klepper

Deep P bands – the solution to subsoil decline or just a useful supplement?
Mike Bell, Doug Sands and David Lester

Exploring the potential for refining sugarcane nitrogen fertiliser management by accounting for climate impacts in the Tully region
J. S. Biggs, Y. L. Everingham, D. M. Skocaj, B. L. Schroeder, J. Sexton, and P. J. Thorburn

Microscopic Benefactors - More Than Nitrogen: Observations from field samples and trials showing increases in grain size, resistance to pathogens
Tabin L.L. Brooks and Nicholas Harrison

Improving forage productivity for increased livestock production using biochar and green manure amendments
Amos B. Nambima Dene, Rodrigue V. Cao Diogo1, Thierry D. Houehanou, and Birthe K. Paul

Strategies to increase phosphorus use efficiency with different nitrogen forms in a tropical cropping system
Nikala Passaris, Neil Huth, Peter Bolo, Job Kihara, Birthe Paul, Susanne Schmidt JodyBiggs and Bianca Das

Identifying the mechanisms controlling crop response to subsoil amelioration with nutrient enriched organic matter
K Dunsford, MR Hart, SJ Lang, E Tavakkoli, S Uddin and RD Armstrong

Low fertiliser nitrogen use efficiency in irrigated cotton cropping systems
Clemens Scheer, David Rowlings, Diogenes Antille, Max De Antoni Migliorati, Kathrin Fuchs and Peter Grace

A simple N calculator for achieving water-limited yield of wheat crops
Zvi Hochman, Francois. Waldner

Using novel nitrogen management systems to solve a complex problem
James Hunt, James Murray, Kate Maddern, Juan Wang, Caixian Tang

Effective use of enhanced efficiency nitrogen fertilizers when applied in sub-surface bands
Chelsea K Janke, Phil Moody and Michael Bell

Insights on use of deep soil nitrogen tests from long-term moisture probe data in Victorian low and high rainfall crops
Ben Jones and Dale Boyd

Rate or row spacing? What increases crop P uptake from deep-placement in southern Queensland cropping soils?
David W. Lester, Michael J. Bell, Duncan J. Weir and Douglas Lush

Soil release dynamics and crop recovery of banded urea and Enhanced Efficiency Nitrogen Fertilisers (EENFs)
Cristina Martinez, Megan Hunter, Claudia Tang, Yash Dang, Chelsea Janke and Mike
Bell

Composted chicken manure incorporated by trenching increased crop performance on sodic grey clay soil
G.P. McDonald, D.J.M Hall

Comparison of the ‘Nitrogen Bank’, Yield Prophet® and national average nitrogen fertiliser rates on yield and gross margins of wheat
Elizabeth Meier, James Hunt and Zvi Hochman

A two-step modelling approach to reducing environmental risks in cropping systems: an example with maize rotation
HR Pasley, VA Nichols, MJ Castellano, MJ Helmers, ME Baum, EJ Kladivko, and SV Archontoulis

Genotypic response of sugarcane to enhanced efficiency fertilisers (EEF)
AS Ranagalage, J Basaynake, J Deutschenbaur, S Natarajan, S Schmidt, P Lakshmanan, N Robinson

Phosphorus dynamics in Vertosols: improving fertilizer management
Nelly Raymond, Peter Kopittke, Frederik van der Bom, David Lester, Enli Wang and Mike Bell

Increasing grain yields in the sub-tropics by deep banding phosphorus
Douglas Sands, Mike Bell, David Lester

Fertiliser 15N loss increases in response to the N surplus in tropical sugarcane systems
Naoya Takeda, Johannes Friedl, David Rowlings, Daniele De Rosa, Clemens Scheer, Peter
Grace

Interaction between root architecture, soil moisture and phosphorus placement on cereal productivity
Frederik van der Bom, Alwyn Williams, and Michael Bell

Importance of timing N application for meeting irrigated cotton demands
Tim Weaver, Ian Rochester, Kellie Gordon, and Michael Bange

Spatial patterns of CO2 fluxes across litter amended, non-amended, and native soils on cotton farms in southern NSW
Jackie R. Webb, Rakesh Awale, Wendy C. Quayle