Crop Nutrition

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Tag archive: All regions

Can I burn lime and gypsum with stubble?

What happens to gypsum or limestone when stubbles are burnt? Gypsum and limestone are soil amendments – sometimes spread onto paddocks before burning of crop stubble. Stubble or grass fires can affect limestone and gypsum in two ways: chemical changes due to high temperatures, and convective losses as ash rises. […]

Watch our webinar: how to review last season’s crop nutrition decisions

You might know how much you or your client spent on crop nutrition last season, but do you know if it was well spent? Review at the end of the season is the best place to answer that question. How do you assess how well last season’s crop nutrition management […]

N-rich strips show if your crop needs a boost this season

  An N-rich test strip in your paddock allows you to follow nitrogen supply in-crop, and see what responses are likely to additional N. The test strip is a part of the paddock where additional N is applied – above the base rate applied to the rest of the paddock. […]

Older soil test methods hold ground

Current widely used soil test methods have come out on top in a review of soil testing procedures to see which procedures best correlate with crop yield responses. Sean Mason at the University of Adelaide has investigated how well results from some newer testing methods, including Diffusion Gradient Testing (DGT), […]

Using deep soil cores for Nitrogen, Potassium & Sulfur

Soil testing is a valuable tool for crop nutrition decision making. The standard 0 – 10cm soil test doesn’t always tell us enough about the crop availability of more mobile nutrients. Nitrogen and Sulphur, as anions (negatively charged), tend to move deeper into the profile with rainfall. On sandy acid […]

Webinar: Review crop nutrition in your paddocks

Webinar recording coming soon As part of the More Profit from Crop Nutrition national extension program,Chris Dowling presented a webinar for advisors and growers from all Australian grains regions covering the techniques for evaluating how the previous season’s crop nutrition delivered in terms of yield. The webinar covered what information you need, different measures of […]

RESEARCH SPOTLIGHT: Fertiliser recommendations and soil tests

Surveys have indicated soil testing is underutilised in Australia for developing paddock or site specific fertiliser applications. Soil testing provides a seasonal index of the nutrients present in soil and helps inform decisions on the right types, methods and rates of fertiliser to meet crop requirements. The process for developing […]

How good was your crop nutrition last season? Tools for review

How do you assess how well last season’s crop nutrition management shaped up? Every grower knows how much they spend on crop nutrition. They do not always know if it was well spent. A good crop nutrition program maintains soil fertility, and supplies what is needed to meet the productivity […]

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 […]

Soil sampling for 2015

As well as being used to monitor long term trends in soil fertility, soil testing can be used to inform crop nutrition decisions. Collecting representative samples is the most important step in getting useful results from soil analysis. Plan your sampling by: mapping paddocks into zones if they are not […]

Nutrient use efficiency – from the world to your farm

Rob Norton, from the International Plant Nutrition Institute, talks about nutrient use efficiency from a global perspective to the local farm. For more information view Rob Norton presented on ‘Nutrient use efficiency-profits and policy’ at the 2014 Fertilizer Australia conference,

The cost of a poor spread pattern

In a follow-up to our article How even is your spread?  Chris Lightfoot, Consultant Economist from Melbourne, talks about the Accu-Spread program and recent work to estimate the cost of bout width variation delivered by most fertilizer spreaders. What is the reduction in variation worth the farmers in terms of gross margin? […]