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More on crop nutrition from the 2018 GRDC Updates

The P story so far – Mike Bell

At the Allora and Breezer updates, researchers from University of Queensland, DAF Queensland and NSW DPI gave an update on the latest deep P research findings.

The P story so far – an update on deep P research findings

Farming system impact – Lindsay Bell

The impact of a farming system on NUE, WUE, soil-borne disease and profit was discussed at the Goondiwindi and Allora updates. Researchers from CSIRO and DAF Queensland collaborated for this project.

Farming system impact on nitrogen and water use efficiency, soil-borne disease and profit

Residual herbicide impact on soil biological function – Nikki Seymour

Nikki Seymour from DAF Queensland presented a paper on how residual herbicides impact soil biological function, at the Dubbo and Goondiwindi updates. Other researchers from DAF and NSW DPI worked on this project.

Impacts of residual herbicides on soil biological function

Filling the yield gap in the HRZ – Malcolm McCaskill

Researchers from Agriculture Victoria, Norton Agronomic, SARDI  and Southern Farming Systems looked at the main causes of yield gaps in the high rainfall zone (HRZ). Under-fertilising appears to be the major cause in cropping systems. This paper was presented at the Bendigo update.

Filling the yield gap – Optimising yield and economic potential of high input cropping systems in the HRZ

Different forms of lime – Paul Damon

Western Australian researchers compared the effect on soil pH of liquid lime, prilled lime slurry and limesand. This paper was presented at the Perth update.

Quantifying the effectiveness of prilled lime and liquid lime for neutralising soil acidity in the glasshouse

Nutrient redistribution after windrowing – Wayne Pluske

Researchers from Equii, APAL Laboratories, and Wyening Mission Farm looked at how evenly nutrients are redistributed across a paddock when canola and wheat are windrowed. They presented their findings at the Perth updates.  

Just how much are nutrients redistributed unevenly across the paddock when canola and wheat is windrowed?

Real-time, in-field soil testing – Mike McLaughlin

Researchers from CSIRO Land and Water, University of Adelaide and Agronomy Solutions explained exciting advances in real time soil testing at the Perth update. The use of infrared spectroscopy sensors in equipment could reduce testing costs and improve precision soil management.

Real time soil tests in the field? Science fiction or just over the horizon

Ameliorating sandy soils – Sam Trengove

At the Adelaide update, Sam Trengove from Trengove Consulting presented a paper on the virtues of ameliorating sandy soils using deep ripping and nutrition applied to the soil surface. Depending on the treatment costs, return on investment ranged from 142 – 521% over three years.

Amelioration of sandy soils – opportunities for long term improvement

Improving sandy soil productivity – Barry Haskins

Researchers from Ag Grow Agronomy and Research and CSIRO have looked at improving the productivity of the sandy soils typical of SW NSW. Management options such as spreading chicken manure and using strategic cultivation have shown great benefits in the first year of trials. This paper was presented at the Wagga update.

Improving productivity on low fertility (sandy) soils

Causes of the yield gap nationally – Roger Lawes

Researchers from CSIRO Agriculture and Food and Cropfacts looked at the difference between actual and potential yield in wheat crops across the Australian grain belt in 2015 and 2016. The cause of the yield gap varied, with no one factor responsible. This paper was presented at the Wagga update.

The National Paddock Survey — what causes the yield gap across Australian paddocks?



Nitrogen topical at 2018 GRDC Updates

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