Department of Primary Industries and Regional Development WA trials

To determine the impact of stubble burning on snail populations in a canola paddock

To determine the impact of stubble burning on snail populations in a canola paddock

• To test the yield response of albus lupin to lower than normal seeding rates and wider than normal row spacings.
• To test if using low seeding rates and/or wide rows would reduce the incidence and impact of fungal diseases including sclerotinia and anthracnose.

• To test yield responses to narrow vs wide row over high and low rainfall zones of the NAR.
• To test best agronomy for wide rows; hybrid vs open pollinated, seeding rate, fertiliser and fungicide.

• To test yield responses to narrow vs wide row over high and low rainfall zones of the NAR.
• To test best agronomy for wide rows; hybrid vs open pollinated, seeding rate, fertiliser and fungicide.

• To test yield responses to narrow vs wide row over high and low rainfall zones of the NAR.
• To test best agronomy for wide rows; hybrid vs open pollinated, seeding rate, fertiliser and fungicide.

To determine the appropriate sowing time by variety combination to maximise the grain yield and quality of wheat in different environments in Western Australia.

1. To obtain data on late March and early April sowing of canola varieties.
2. To determine if changing variety to better match season length improves yield.

To determine environmental triggers and time of day vegetable beetles and slaters are active.

• To evaluate the benefit of deep ripping on two different compacted sandy loams with varying subsoil acidity.
• To evaluate the value of inclusion plates in slotting lime to the subsoil
• Evaluate the longevity of the response and returns over multiple seasons and crop rotations

The aim of this work was to use a range of tools to determine if we can be confident that the SclerotiniaCM app is producing reliable outputs that will help canola growers make informed management decisions in a given season

To determine if a soil wetter, such as SE14, improves plant establishment in years with a dry start.

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

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

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 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).

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).

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).

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).

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).

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 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.

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

To determine the effect of common district nutrition packages in Merredin on crown rot index (incidence x severity) of wheat and barley varieties.

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.

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.

The objective of this survey is to understand if HWSC systems influence in mice populations in paddocks.

Properties with mice activity around sheds or houses were targeted.

There are three non-burning and non-mechanical techniques most commonly employed in harvest weed seed control (HWSC) systems: chaff dumping, chaff lining and chaff tram-lining. The highest adoption of HWSC is in the GRDC western region with an estimated 67% of all farmers undertaking at least one HWSC strategy in 2014.

Chaff dumping is the collection of the chaff fraction using a cart towed behind the harvester. The chaff in the cart is then dumped, usually in piles in the paddock. The chaff is then either burnt, grazed or left to decompose.

For chaff lining, the chaff and weed seeds are confined to a row directly behind the harvester using a narrow chute. The chaff and weed seeds are then left to decompose over time. To promote decomposition, the chaff lines need to be placed in the same location year after year by running the harvester on a controlled traffic system (CTF).

Chaff tramlining is a similar concept to chaff lining, but the chaff fraction is diverted from the chaff deck onto permanent wheel tracks in a CTF system. Wheel traffic creates a hostile environment that inhibits weed seed germination.

There has been a recent system change with more growers opting for leaving chaff in-situ to rot, whether in dumps or in lines, rather than burning. This investigation aimed to better understand invertebrate species and mice associated with these HWSC systems, which to date are poorly understood, in each of the five port zones: Albany, Esperance, Geraldton, Kwinana’s East and West.

Assess the yield impact of different summer spray application timings at four trials in March 2017, following a widespread summer rainfall event.

Assess the response of canola to N and to determine if the timing of N could be delayed in WA until later in the growing season

To determine the spread pattern from aerially applied baits.

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).

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).

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).

To optimise cereal protein by better understanding response to high nitrogen rates in a given season through demonstration trials while also better understanding disease response.

To determine if spacing canola plants more uniformly within the row can improve yield in the WA Northern Region.

1. To refine canola establishment methods for early sowing.
2. To see if it is possible to chase moisture at depth with canola.

1. To refine canola establishment methods for early sowing.
2. To see if it is possible to chase moisture at depth with canola.

To determine the carryover benefit of seed dressings for soilborne diseases in the eastern wheatbelt.     

To quantify wheat yield loss in response to root lesion nematode (Pratylenchus quasitereoides) population size, by using a unique population gradient which has been set up as a result of host-crop varieties and nitrogen treatments over the 2018 and 2019 growing seasons.