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 […]
Tag archive: phosphorus
As winter sowing dates get later a crop’s potential response to Phosphorus (P) fertiliser rises, at the same time absolute yield potential is falling. This raises the question of what adjustments might need to be made to P fertiliser rates.
Plant physiology indicates that later sown crops should be more responsive […]
Following drought growers look to recover production and protect vulnerable soils. When it comes, the break may present opportunities to cut back on some usual nutrient inputs while moving back into production. Soils should be managed with an eye to their long term fertility.
Soil phosphate levels may increase a little […]
Many growers will be thinking about what to do with Phosphorus (P) fertiliser for their next winter crop. Soil tests are the best indicator of whether a paddock is going to be responsive to P fertiliser.
If your soil tests shows moderate to good levels of P, and yields were […]
During 2015 eXtensionAUS Crop Nutrition published 43 articles on many different aspects of crop nutrition in the Australian grains industry.
All of these articles were prepared with, and reviewed by, members of our Community of Practice, Australia’s leading experts in crop nutrition.
These are our top ten – the most popular articles based […]
The 2015 Australian Agronomy conference was held in Hobart in September 2015. The conference theme was Building Productive, Diverse and Sustainable Landscapes. Of the many presentations we have selected and grouped those we think are most of interest to Australian crop nutritionists. This is our selection on Phosphorous.
100 Years of […]
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 […]
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.
Deep soil tests reveal northern […]
After a hot finish to the winter crop season, the opportunity for summer crops is now upon us.
Fertilisers can account for up to 40% of the variable costs of growing a crop. Hence it is well worth investing money in accurate soil testing and agronomic advice to help balance the […]
Trials in central NSW showed that 2 forms of liquid P fertilizer delivered similar yield responses to the same level of P applied as MAP on a deficient soil with low PBI.
Higher cost per unit of P with these products, meant that MAP was still the more economic form of […]