Crop Nutrition

How to protect your grain – prevent contamination

There have been a few cases of Australian grain being contaminated with chemicals after harvest. The chemical ended up on the grain through using the same trucks to move treated fertiliser and transport grain. About 15% of Australian cereal crops use fungicide treated fertilizer. The fungicide flutriafol controls certain fungal […]

Does incorporating lime boost fertiliser response?

Does addressing soil constraints change crop nutrition requirements? DAFWA researcher Craig Scanlan runs field trials in central and northern WA. The trials investigate links between soils, seasons and crop nutrition. The focus is how incorporating lime affects yield response to fertilisers. Soil mixing to treat water repellent soils is also […]

Nutrient strategies for 2018

Given the very patchy 2017 season, how shall we approach crop nutrition in 2018?  In November 2017, Rob Norton gave a webinar for ExtensionAUS Crop Nutrition on this topic. Rob is the Regional Director for the International Plant Nutrition Institute (IPNI). The main crop nutrition strategies Rob suggested: do soil […]

What happens in the year after a hayed-off crop?

A hayed-off crop can make estimating available nitrogen (N) trickier than usual. Deep N testing is the best way to assess N resources.Estimates and actual results from deep soil testing were very different in recent research by Birchip Cropping Group. After haying off there’s potential yield benefit next season from leftover […]

Help Australia day mungbeans get what they need

Some rain around Australia’s northern region saw some last minute mungbean crops go in. The GRDC Mungbean Grownotes suggests we base fertiliser recommendations on: soil test results fallow length yield potential paddock history. That’s comprehensive, but with an opportunity crop there’s not always the chance to cover all the bases. […]

What is the fate of nitrogen fertiliser?

Do you know the fate of nitrogen (N) fertiliser that’s applied to cropping paddocks?  How much ends up in the crop, soil or lost? Victorian researchers have been working with a traceable N fertiliser to find out. The standard assumption is the crop takes up half the fertiliser N in […]

Soil sampling with banded fertiliser

Soil sampling paddocks with a history of precision placement of fertilizer requires special planning. Some elements, such as soil P, remain very close to where they were placed in the soil. Random sampling could give falsely high or low test results depending on how the sampling pattern intersects with the placement […]

Try these new decision support tools to do better in the HRZ

Making fertiliser decisions can be difficult. Paddocks in the HRZ have high yield potential. Actual yields often fall short even in high input cropping systems. Fertiliser decisions in the HRZ: Under-fertilising appears to be a major cause of yield gaps in the HRZ. You get the best return on nitrogen […]

How critical is the critical level?

Critical soil nutrient levels indicate whether a yield response to fertiliser is likely – or not. Their role is to help avoid unnecessary or uneconomic applications of fertiliser. Critical levels are used in interpreting soil test results to make fertiliser recommendations. The critical level is the value required to achieve […]

Join in the crop nutrition discussion at the GRDC Updates

ExtensionAUS™ is bringing “Ask an Expert” to the 2018 GRDC updates.   Nutritional legacies from 2017 and implications for 2018. Senior crop nutrition experts Mike Bell (QAAFI), Mark Peoples (CSIRO), Nikki Seymour (DAF QLD), Richard Daniel (NGA), Jim Laycock (Incitec Pivot), Ehsan Tavakkoli (NSW DPI), and Tim Weaver (CSIRO) will […]