Crop Nutrition

Soil carbon and emissions in Australian grains soils

One of Australia’s largest nitrous oxide (N2O) research projects has some good news for grain growers and the wider Australian community. A national effort, funded by the GRDC in partnership with the Australian Government’s Department of Agriculture, investigated the impact of increased soil organic carbon levels onN2O emissions, grain yield […]

What happens to P from crop residues?

Annie McNeill from the University of Adelaide talks about the challenges in understanding what happens to the phosphorous returned to the soil in crop and break crop residues. Recorded at the National Soil Science Conference at the Melbourne Cricket Ground, November 2014.
Further information
National Soils Conference proceedings: Available P in topsoil at break […]

Do you know your Nitrogen Use Efficiency?

Water use efficiency is widely recognised as a key performance indicator for crop production. Similarly nitrogen use efficiency (NUE) is an important indicator of resource use effectiveness and economic performance of this important crop input.
Why measure NUE?
Nitrogen fertilizer is frequently the biggest single cost within cropping variable costs. With slim cropping […]

Manage pH for profit

Video: Craig Scanlan from Department of Agriculture and Food, Western Australia talks about the interactions between nutrition and soil acidity.
Research in Western Australia has been looking into the interactions between Phosphorus (P) fertiliser rates and soil pH given that most West Australian cropping soils have good soil P reserves but […]

SPOTLIGHT: Fertiliser calculator

The Department of Agriculture and Food, Western Australia (DAFWA) have recently upgraded their online fertiliser calculator tool. The free calculator is designed to guide decisions on which fertilisers represent the best value for money while meeting crop nutrient requirements.

The calculator allows comparisons of 1500 commercially available fertiliser products for their […]

Soil sampling with banded fertilizers

In paddocks with a history of precision placement of fertilizer, soil sampling requires special planning. Some elements, such as soil P, remain very close to where they were placed in the soil. Random sampling could give falsely high or low test results depending on how the sampling pattern intersects with […]

No-till soils and strategic tillage

NSW DPI’s Mark Conyers is working on getting the information we need to make decisions on striking a balance between the benefits of conservation farming, and the rationale for strategic tillage to manage issues like acidity, weeds, pests and crop diseases.

One emerging issue is how well conventional soil sampling is able […]

Reducing nitrous oxide emissions from dryland grains soils

Graeme Schwenke from NSW DPI talks about reducing nitrous oxide emissions from dryland grains soils in northern NSW.  Nitrification inhibitors substantially reduced nitrous oxide emissions and other N losses when heavy rains and waterlogging follow fertiliser application. Splitting N applications and alternate fertiliser forms were also looked at. The video […]