trials

The objectives of this project are to quantify the size and efficiency of response to mid-row banded nitrogen in irrigation systems within the southern Riverina of Australia. This will include the assessment of the effect of mid-row banded N on growth, yield and apparent nitrogen recovery efficiency (ANRE), of wheat as compared to the current best-practice method of topdressing at GS31 and the control.

Another key objective of this project is to assess the loss of banded nitrogen during waterlogging events to determine if denitrification losses are reduced in banded nitrogen and compared to topdressed nitrogen and the control.

This trial aimed to test mid-row banding of nitrogen in wheat after rice, in the presence and absence of waterlogging.

A winter wheat trial was established to assess the whole-season nitrogen (N) availability against different nitrogen placement strategies when subject to waterlogging.

This was the first year of an intended long term trial investigating the effect of K nutrition on sandplain. Potassium was applied at rates between zero and 100 kg/ha IBS and banded in the forms of MOP and compound NPK product (Vigour).

To evaluate the rate of breakdown and nutrient release of a resin coated urea relative to traditional Nitrogen Sources (Urea and Maxam).

This trial seeks to test the Yield Prophet tool to determine its relevance and usefulness to growers of the West Midlands region in determining most efficient and effective nitrogen strategy.

The demonstration undertaken at four on-farm sites seeks to test the Yield Prophet tool to determine its relevance and usefulness to growers of the West Midlands region in determining the most efficient and effective nitrogen strategy.

To test the Yield Prophet tool to determine its relevance and usefulness to growers of the West Midlands region in determining the most efficient and effective nitrogen strategy.

Compare varying rates of N on wheat after applying BEST TM21 against a control area of no post nitrogen application.

To determine the long term effects of 1980 P treatments on soil fertility.

The trial purpose was to compare seed dressing and foliar application of Bioprime using granular and liquid fertilisers. 

To investigate the effect of a rotary spader and lime on the residual value of phosphorus and potassium fertilizer on a water repellent soil.

To evaluate the performance of crops (barley in 2009) when pasture cropped over different perennial species established on deep pale sands.

Evaluate Lokomotive as an in season foliar potassium source for correcting potassium deficiency and compare to muriate of potash (MOP).

To determine the effect of canola plant density on nitrogen (N) response.

To determine the relative requirements for nitrogen (N) and phosphorous (P) in canola.

To compare the effectiveness of a compound vs a blended NPK fertilizer.

To determine the relative importance of nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) in canola.

To investigate responses to phosphorus and potassium in wheat.

This trial was established 2006 to :

• demonstrate responses to Super Phos, potash and lime in pasture and the benefits to the following crop, and
• to demonstrate the benefits of pasture manipulation and intake in furrow to the following crop.

To investigate responses to phosphorus and nitrogen in wheat.

This report records the use of polyacrylamides (PAMs) and soil wetting agents in Badgingarra.

To investigate potassium and lime responses and effects on lime and potassium requirements.

To assess the value of muriate and sulphate sources of potassium on growth and yield of wheat when applied by banding and topdressing at seeding time or topdressing after emergence.

To compare potassium (K) strategies over 3 years.

This trial examines potassium (K) rates as muriate of potash (MOP) products applied by a number of methods and the effects on growth and yield of Mace wheat.

To determine the residual value of nitrogen (N) and phosphorus (P) applied in 2011.

This trial was designed to test whether wheat growing on soil with low K levels will benefit from K application enabling it to make full use of applied N during the crop growth cycle. High yield potential crops in the area have shown decreased rigidity in foliage and tillers, with low Cu status suspected. Uptake of Cu can be influenced by rapid growth and N uptake. Application of Cu before rapid plant expansion was also to be tested.

To demonstrate that, in the right season, ripping affects nitrogen uptake efficiency and availability to crops.

To assess the use of banded slow release nitrogen in comparison to banded urea and best practice farmer practice.

To determine responses to Super Phos, Potash and Lime in a pasture wheat rotation over 5 years.

To demonstrate and evaluate nitrogen-rich strips (N Gauges) and Normalised Difference Vegetation Index (NDVI) measurement as to provide a simple, accurate and easy-to-understand decision support tool to guide economic application of nitrogen during the growing season.

To determine the effectiveness of urease inhibitor products.

Demonstrate variable rate technology on farm and how it can be applied to manage fertiliser use and to minimise nutrient enrichment or depletion that leads to poor soil health.

To investigate the response of wheat to different rates of applied P and N.

To investigate the response of wheat to polymer-coated urea.

The demonstrate issues key to the current GRDC funded Stubble Initiative Project.

To investigate the possible advantages of varying nitrogen rates over different soil types on a field in the Upper North region.

This trial is part of a larger series of experiments in the southern region aiming to compare the productivity (yield, protein), profitability (gross margin, risk) and sustainability (soil organic matter, carbon footprint, N losses) of different N management systems over the long term.

Main aims of the project are: • Demonstrate different methods of lime incorporation. • Assess rate responses to lime through subsoil amelioration. • Economics of lime rate by tillage method

This one-year investment aimed to provide growers and advisers along the South Coast of WA with greater confidence to make decisions on whether to sow a cereal crop later in the growing season (late winter, early spring) after crop failure, or inability to seed, due to early season waterlogging. It also aimed to provide some data on what varieties and nitrogen fertiliser strategies might be required for later sown crops.

To determine how best to ameliorate subsoil acidity.

The trials aim was to assess and evaluate the effectiveness of mid-row banding (MRB) nitrogen, to improve N use efficiency and yields.

The trial involved both a small plot trial at South Stirlings and a broadacre site at Kendenup. 

The broadscale trial contained two treatments where 125kg/ha of Urea was applied at seeding. Treatment one was via MRB, treatment two was via top-dressing.

The small plot trial contained 6 treatments, which had a N application seeding and at tillering. Treatment 1, MRB 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 2, MRB 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 3, Top-dressing 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 4, Top-dressing 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 5, nil Urea at seeding, & MRB 100L/ha of flexi N at tillering. Treatment 6, Nil Urea & Top-dressing 100L/ha of Flexi N at tillering. 

To enable growers to make timely and efficient nitrogen decisions in the Albany and Esperance port zones by having a rule of thumb around the cost/benefit of feeding N to crops on waterlogged soils.

This project looked at the long-term effect of P rates on crop production in the APZ. 

• To investigate the effects of fertiliser rates and its placement on the germination and establishment of deci and kabuli type chickpeas.
• Tto measure the grain yield responses to fertiliser rates.

To understand the yield limitation in pulse crops grown in high intensity production zones of the Mid North.

To promote early vigour to improve biomass and yield partitioning in chickpea.

To investigate the response of chickpea to application of macro and micro-nutrients.

To investigate the response of chickpea to application of macro and micro-nutrients on a sandhill and swale soil.