This website is no longer being updated.

GRDC Communities Logo

Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages

Tag archive: fertilizer

Opportunities to optimise fertiliser investment – Parkes NSW

Fertiliser is a key component of crop input budgets. Key messages from the GRDC’s More Profit from Crop Nutrition (MPCN) initiative will be shared at workshop at Parkes NSW on March 9. Industry experts on soil and crop nutrition issues will present recent findings and discuss opportunities to optimise fertiliser […]

Reducing Nitrogen losses in the High Rainfall Zone of Victoria

Strategies to reduce Nitrogen (N) losses in Victorian High Rainfall Zone (HRZ) cropping systems are getting clearer. Recent research in south western Victoria examined rates of N applied, placement of fertilisers and nitrification inhibitors. This work is part of the national agricultural nitrous oxide research program, supported by the GRDC. […]

Webinar – get more profit from nitrogen with price ratios

A free, online webinar to explain the concept of an economically optimum nitrogen rate. The optimum is derived using a ratio of the price of wheat to the price of nitrogen. This framework can help growers and advisors achieve better returns on nitrogen expenditure when used in conjunction with N […]

Potassium and crop stress

Crops may need extra Potassium when they under stress from drought or frost. There is a theoretical basis, and now GRDC funded research is looking into whether applying additional potassium is worthwhile when plants are under stress. Getting the right combination of drought and frost conditions to get meaningful results […]

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 […]

Subsoil manuring provides long term N supply

Some growers have been able to reduce N inputs for at least three years following the placement of manure into the subsoil. Trials in Victoria’s High Rainfall Zone by Southern Farming Systems are showing promising signs of multiple benefits from subsoil manuring. Originally, subsoil manuring was primarily for improving the […]

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 […]

Nitrogen Use Efficiency training online

Significant new research is investigating how management of nitrogen fertilizer can be optimised for crop profitability, alongside minimising greenhouse gas emissions and impacts on water quality. Fertcare® has brought this new information, along with a summary of existing best science and their practical implications into a training package. Following a […]

Deep Phosphorus fertiliser trials in NSW

Deep phosphorus (P) placement to improve crop productivity is being investigated in the central west of NSW, at Gilgandra and Nyngan. Led by Dr. Mike Bell (QAAFI), the trial investigates how deep P placement affects the fertility of the subsoil, and the economic effectiveness of deep P placement. The work […]

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 […]