Crop Nutrition

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 […]

Using legumes to reduce N losses

Mike Bell from the University of Queensland and QAAFI talks about the role of legumes in reducing nitrogen fertliser inputs and reducing the risk of nitrogen losses. The video was taken at the National Soils Conference held in Melbourne in November 2014. For more information: Denitrification the latest chapter in […]

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 […]

Understanding & managing multiple nutrient deficiency

Mike Bell from the University of Queensland and QAAFI talks about the increasing incidence they are seeing of soils with multiple nutrient problems and the implications on fertiliser management strategies. The video was taken at the National Soils Conference held in Melbourne in November 2014.   Further information GRDC: Deep […]

Soil sampling for 2015

As well as being used to monitor long term trends in soil fertility, soil testing can be used to inform crop nutrition decisions. Collecting representative samples is the most important step in getting useful results from soil analysis. Plan your sampling by: mapping paddocks into zones if they are not […]

Carbon credits from fertilizer management

Cotton farmers could soon add value to their nitrogen fertilizer management by earning income in a similar process to graziers under the Emissions Reduction Fund (ERF) that recently passed through the Senate. Emissions reduction methods set out the rules for estimating emissions reductions from different activities, and ensure that emissions reductions […]

How much N is in the soil?

Louise Barton, Soil Scientist from the University of Western Australia talks about the importance of understanding how much nitrogen is in the soil before seeding. Louise was interviewed at the National Soil Conference held in Melbourne in November 2014. Further information Proceedings of the Soil Science Australia National Soil Science […]

Crop nutrition in soils with added clay

David Hall from DAFWA says adding clays to sandy soils can add significant Potassium and Phosphorous, as well as improve the nutrient holding capacity of the soil.  Recorded at the National Soil Science conference at the Melbourne Cricket Ground, November 2014. Further information Proceedings of the Soil Science Australia National Soil […]

Grain analysis for nutrient strategy

Analysis of freshly harvested grain can: – show if that crop had a hidden hunger that may have limited yield – document the degree of a known deficiency – confirm its suitability to use as seed – inform future crop nutrition strategy for the paddock. Tissue testing of grain is […]

Chemically treated fertilizers can contaminate grain

Fertilizers treated with other chemicals such as fungicides are a potential source of unacceptable pesticide residue in farm produce. The residues arise from cross contamination of harvested grain, not from use of the fertilizer in the paddock. Around 15% of the Australian cereal crop is currently sown with fungicide treated […]