For Wimmera and Mallee farming businesses, fertiliser is the biggest variable expense. Creating Nitrogen (N) budgets based on predicted yields makes sense. N budgets start with realistic target yields based on predicted rainfall for the growing season. For wheat it is calculated as yield (kg/ha) = (growing season rainfall (mm) […]
A couple of months ago it was so dry we wondered if we could grow a crop this year. Now we have had reasonable planting rain and everybody is madly sowing. The soil moisture from the March rainfall has stimulated mineralisation of N in the soil and it is still […]
Mike Bell from QAAFI and the University of Queensland presented to Advisers at the GRDC Update at Coonabarabran. In this video Mike talks about a new way of looking at P nutrition. For the full paper visit the GRDC website.
New research from DAFWA presented at the 2014 GIWA Agribusiness crop updates suggests you may get more bang for your crop nutrition buck if you spend some of the bucks on cultivation and lime. Profit is driven by the cultivation effect on nutrient availability. Deep cultivation gave a yield response […]
Efficiency and effectiveness are different dimensions of nutrient use efficiency (NUE). The most efficient way to use fertilisers is not to use any, but that is not effective, as production is likely to be nutrient limited. IPNI’s Rob Norton gave a rundown on NUE terms and details, and how they […]
To reduce some of the uncertainty about in-crop nitrogen, Dr Rob Norton from the International Plant Nutrition Institute suggests using an N-Rich strip applied either presowing or soon after sowing. If responses can be seen later in the season where the extra N was applied, it is a good indication […]
It was suggested in a recent paper from the US that because 24% of reports from a literature survey showed positive responses to applied K, that growers did not need to use K fertilizers. While K responses will not occur on all soils with all crops, there are clearly […]
Jim Laycok from Incitec Pivot Fertiliser, presented to Advisers at the GRDC Update at Coonabarabran. Jim talks about P application and has some simple rules for the 2014 season. View the full paper.
Chris Dowling from Back Paddock Company, and member of the eXtensionAUS Crop Nutrition Community of Practice, presented to Advisers at the GRDC Update at Coonabarabran.
Craig Scanlan, DAFWA, discusses managing nutrition on soils that have been treated for water repellence by cultivation. Recorded at GRDC Updates, Western Region, Perth WA, 25-26 February 2013