Subsoil phosphorus (P) deficiency costs growers in Queensland and Northern NSW around $80–100 million each year in reduced yield. Deep P fertiliser applications into the subsoil can improve yield but are a long-term decision. They are moderately expensive and returns are not immediate. The Deep-P calculator helps Northern region growers […]
Compost can improve overall soil health and benefit crops. The organic matter may improve soil structure, infiltration and porosity. The soil’s water and nutrient holding capacity may get a boost. Compost feeds the microbes in soil, which in turn increases soil fertility.
Compost and nutrients
Individual composts are different. The source […]
Australian crop advisors can use the best available science to give fertiliser advice. The Better Fertiliser Decisions for Cropping (BFDC) database:
is the best available data resource
is continually upgraded with the latest field trial results
holds data from over 5,600 research trials looking at fertiliser response
underpins the recommendations of Fertcare […]
A comprehensive technical report explores the yield gap typical in commercial wheat and canola crops in the high rainfall zone (HRZ) of southern Australia. A previous report concluded that the yield gap was due to insufficient fertiliser being applied to achieve potential yield. The main barrier to supplying sufficient nutrients […]
Pulse crops can be a valuable source of nitrogen within cropping systems. The amount of N fixed by legumes can vary substantially and is affected by the species of crop, soil and seasonal conditions and crop management factors.
In this webinar, QDAF senior agronomist Howard Cox and researcher Professor David Herridge, […]
Best practice crop nutrition seeks to make the most of your fertiliser budget and minimise environmental impact. The ‘Four Rs’ is a nutrient management framework that aims to match nutrient supply with crop needs.
The Four Rs
The four components of the framework are:
The RIGHT source fertiliser
At the RIGHT rate
Micronutrients or trace elements are often suspected to be deficient in some Australian cropping regions. Some trace element applications are now routine. But recent trials in areas with reported deficiencies have shown little response to micronutrient applications.
In southeastern Australia, 23 trials were run on wheat, barley and canola […]
You might know how much you spent on fertiliser last season, but do you know if it was a good investment? Review at the end of the season can answer that question. Do you know how to assess how well last season’s crop nutrition management shaped up?
In this webinar presented […]
Waterlogging affects nutrients in soils, and reduces the ability of plant roots to take up nutrients. Root functions require oxygen. Root growth and access to soil nutrients are restricted in waterlogged soils.
Soil test before planting the next crop to check nutrient status. Nitrogen (N), potassium (K), sulphur (S) and […]
High grain yields mean high rates of nutrient removal, in particular, nitrogen (N) and phosphorous (P). Soil fertility in the paddock declines unless nutrients are replaced. Soil and grain tests help you make better nutrient budget decisions.
Reference values for nutrient removal are just an indication (especially for P):
A 6-tonne […]