Plant tissue testing helps ensure fertiliser responses are not compromised by factors we can control. How effective was the fertiliser applied? Tissue testing tells a lot about the effectiveness of different fertiliser treatments. The effectiveness of one product compared to another, or one strategy versus another is ultimately determined by […]
Soil nutrient test results often come with benchmarks or critical values that indicate whether you are likely to get a response to applying fertiliser. But how useful are these critical values? The most relevant critical values come from multiple trials, from soils and climate similar to your own. The ‘Better […]
Plant-available nitrogen in the soil profile is lower across the western grainbelt this year compared with the previous four years. Grain growers across the Western region are urged to monitor crops for nitrogen deficiency. Last season’s high grain yields and the dry summer have combined to reduce soil nitrogen. For […]
Listen to Mark Conyers, from NSW Department of Primary Industries, talking about the implications of seasonal outlook and N requirements for this year’s crop. Press play.
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 […]