This study determines the effect of N fertilizer placement, N fertiliser rate and N application timing on the competitive ability of wheat (Triticum aestivum L.) in dryland no-tillage cropping system in the Western Australian grainbelt.

This trial was located in York in the grainbelt of Western Australia and investigated combinations of UAN (Urea Ammonium Nitrate) Placement (streamed or broadcast), UAN rate (low and high input) and UAN timing (early or late in the crop growth) for management of ARG.

This research aims to investigate the effect of wheat time of sowing and seeding rate, on the effectiveness and degradation of pre-emergent herbicides commonly used to control annual ryegrass in no tillage farming systems.

The aim was to assess the impacts of delayed sowing and radish infestation on lupin yield. By doing this we can better understand the extra weed control required to make delayed sowing profitable

To investigate the N rate and time of application response of canola varieties to yield and oil content of Triazine tolerant (TT) and Roundup Ready (RR) hybrids in comparison with open-pollinated (OP) types to:

1. Provide growers in lower rainfall environments with guidelines on times of application to maximise grain and oil yields.
2. Determine if the management of hybrid canola nutrition is different to that of open pollinated varieties due to different responses to N rates and timing.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To measure the role of water stored in the soil at sowing in affecting wheat yield.

To investigate the nitrogen rate and time of application response of canola varieties to yield and oil content of TT and RR hybrids in comparison with open-pollinated types to

• provide growers in lower rainfall environments with guidelines on optimal nitrogen rates and times of application to maximise grain and oil yields, and
• determine if the management of hybrid canola nutrition is different to that of open pollinated varieties due to different responses to N rates and timing.

To assess the benefits and possible crop damage effects of deep-ripping post-seeding.

A demonstration site to compare different seeding machinery in tough conditions and through a range of soil types.

To demonstrate, compare and analyse the efficacy of new herbicide combinations and sequences to achieve control of hard to kill weeds such as ryegrass and radish, whilst maximising yield in hybrid canola, using the hybrid variety Hyola 525RT (Roundup Ready + Triazine Tolerant) canola herbicide tolerant system.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

This research aims to investigate the effect of wheat time of sowing and seeding rate, on the effectiveness and degradation of pre-emergent herbicides commonly used to control annual ryegrass in no tillage farming systems.

To evaluate which varieties of triticale yield well on ‘wodjil’ soils which have low subsoil pH and aluminum toxicity.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To establish a farmer scale demonstration site at Nungarin on a Wodjil soil type investigating cheap, cost-effective methodology to effectively incorporate lime to depth which removes the subsurface constraint and provides more immediate returns to growers on their investment.

The key aim of this trial is to document and understand the change in soil pH down to a depth of 30cm.

In the mid 1990’s, DAFWA established a series of lime demonstrations sites across the WA wheatbelt, to highlight the importance of managing soil acidity. This trial is one of the series, which had a very simple design (0, 1 and 2t/ha applied, in 3 replicates). The rationale was to use farmer equipment, to enable larger areas to be treated differently, and ultimately provide extension opportunities across the WA wheatbelt.

To investigate the cost-effectiveness of on-farm lime for ameliorating soil acidity in Kwinana East Port Zone and to validate the iLime application (developed by DPIRD and Desiree Futures with funding from GRDC) by comparing simulations with field trial results.

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.

• Serradella is a useful pasture species on the sandy soils of the West Midlands. But it has two major weaknesses: weed control (particularly radish and capeweed) and a lack of early biomass production. By sowing serradella with a Clearfield Barley variety (Scope or Spartacus) and using Clearfield (Imidazolinone) herbicides both of these weaknesses can be overcome.
• The aim of this demonstration was to highlight the pro’s and con’s of using Clearfield Barley as a cover crop when sowing serradella pastures.

The key aim of this trial was to compare soil pH change to depth; with two different sources of lime (lime sand and farmers chalk lime).

To demonstrate differences between sprayed and unsprayed plots from December 2012 to February 2013 for RCSN Kwinana East Port Zone trial locations.

Aim; To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

Previous trial results suggest that as long as nitrogen is applied within 8 weeks of sowing, there is no yield penalty. 

How canola responds to nitrogen applied later than 8 weeks has not been widely researched.  Similarly how new generation canola such as RoundupReady (RR) hybrids respond to nitrogen has not been widely tested, particularly in low and medium rainfall areas.  This trial is one of a series of 13 timing of nitrogen experiments DAFWA conducted in 2013.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To determine suitable tine spacing and lime products for deep banding of lime to treat subsurface acidity.

To test a suitable relatively quick and cost-effective method of ameliorating subsurface acidity.

To investigate the effects of rates and granule size of copper containing superphosphate on wheat yields grown on yello9w brown gravelly  soil

To investigate the effects of rates and granule size of copper containing superphosphate on wheat yields grown on yello9w brown gravelly  soil

To investigate the effect of nitrogen rates and time of application on grain yield, oil and gross margins of Roundup Ready, Triazine Tolerant and Clearfield canola.

The trials located at Miling and Kojonup in the grainbelt of Western Australia investigated combinations of canola variety (hybrid or open pollinated), crop row spacing (25 or 50cm) and canola seeding rate (20, 35 or 50 plants/m2). The average seedbank at the Miling and Kojonup sites were 3,630 seeds/m2 and 23,240 seeds/m2 respectively.  Annual ryegrass (ARG) establishment was reduced in hybrid canola treatments seeded at narrower 25 cm row spacing. Decreasing crop row spacing (from 50 to 25cm) and increasing canola seeding rate (from 20 to 50 plants/m2) was found to reduce ARG establishment in the absence of herbicides. At the Kojonup site, ARG seed production was reduced by hybrid varieties (Trophy) and higher plant densities (50 plants/m2). However due to the low rainfall at the Miling site, no interactions were identified. Canola yield in this study was increased in hybrid variety (Trophy) treatments especially at higher seeding rates (50 plants/m2). Interestingly, however, canola seeded at the wider row spacing (50cm) consistently out yielded the corresponding variety and seeding rate combination at the narrower 25cm row spacing. This study conducted two trials in 2018 (Mingenew and Cunderdin) and 2019 (Miling and Kojonup). Multi- environment trial analysis for the combined 2018 and 2019 data to be completed.

Trials located at Miling and Kojonup in the grainbelt of Western Australia investigated combinations of canola variety (hybrid or open pollinated), canola seeding rate (20, 35 or 50 plants/m2) and canola seed size (<1.8, >2.0mm diameter) on ARG management.

To report on a three seeder trial.

To discuss benefits and practicalities of individual growers weed management tactics; and to assist others to decide if adopting similar methods would be beneficial on their property.

To evaluate new and existing triticale varieties.

To investigate time of sowing x crop type.

To determine the optimum sowing date and variety combinations to maximise yield and quality of wheat in WA.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To investigate the effect of nitrogen rates and time of application on grain yield, oil and gross margins of Roundup Ready and Triazine Tolerant canola.

To (i) develop a crop monitoring technique to assess wild radish density and provide growers with an estimated cost of hand weeding for a range of wild radish densities, and (ii) assess the efficacy of hand weeding of wild radish using backpacker labour.

These trials tested the repellence of some products being promoted or anecdotally observed to repel snails in broad acre crops. These products have no supporting data nor are they registered for snail repellence in crops.

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

To determine if there are benefits from the application of the biological based product ‘TM21’ developed by Basic Environmental Systems and Technology (B.E.S.T).

To determine if there are benefits from the application of the biological based product ‘TM21’ developed by Basic Environmental Systems and Technology (B.E.S.T).

To quantify the benefits of Tramline Farming in a low rainfall area.

To provide growers with useful information to understand the impact of sowing time on the yield and quality of new and current wheat varieties.

To evaluate the efficacy of some of the common pre-emergent herbicide mixtures for ryegrass control in wheat.

Demonstrate and evaluate nitrogen rich strips (NGauges) and Normalised Difference Vegetation Index (NVDI) measurement as a decision support tools to guide economic application of nitrogen duringthe growing season.

To determine how lime, nutrients or other amendments are distributed through the soil after applicaiton with different mixing methods.