Rice Extension Newsletter January 2018

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Welcome to the January Rice Extension Newsletter. 

Laurie Lewin, our yield/temperature guru, has some good news:
“Accumulated temperatures from 15th October to 31st December suggest high yield potential.”

However, he also warns:
“There is always the possibility of reproductive cold damage.” Later crops are susceptible as there is a higher risk of cold overnight temperatures after mid-January.

  • PI occurs roughly 14 to 20 days before early pollen microspore.
  • Fill up after PI to 25 to 30cm depth to protect rice plants at microspore from the cold.
  • High water levels are not important after the crop reaches mid flowering.

In this month's newsletter:

  • Water depth is important in cool weather
  • What is new in weed control?
  • 122 paddocks surveyed for weeds – what did they find?
  • Armyworm control – when should you spray?
  • Applications for the 2018 Rice Tertiary Scholarships close Friday 19 January
  • NIR Tissue test results so far this season
  • Some great events coming up for the calendar

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James Brinkhoff, Centre for Regional and Rural Futures (CeRRF), Deakin University

Deeper water provides energy storage, keeping the temperature higher than the air temperature, which was down to 6oC on this morning February 20 2017 at Whitton.

The graphs below show the temperature profile in a rice bay on two cold mornings: the top graph shows data when the water level was high (22cm), and bottom one when water level was low (5cm).

CeRRF is gathering water level and temperature data from farms across the region using a number of sensors. James has been monitoring rice fields using EnviroPro soil moisture probes http://www.enviroprosoilprobes.com/  together with WiField data loggers available from http://www.goannatelemetry.com.au/  to measure water levels, as well as soil moisture and temperature every 10cm.

See the recently published article in Sensors for more detail:
http://www.mdpi.com/1424-8220/18/1/53

Water level at 22cm keeps rice plants warmer on cold mornings.

Water level at 22cm keeps rice plants warmer on cold mornings.

Water level at 5cm does not act as a buffer to cold air temperatures.

Water level at 5cm does not act as a buffer to cold air temperatures.


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Malcolm Taylor, Agropraisals

Last week over 50 rice agronomists, chemical company reps and industry had the opportunity to examine and compare the performance a variety of rice herbicides in a field with 13 consecutive rice crops.

Treatments using two new herbicide products under development worldwide - UBENIQ and AGIXA with RINSKOR ACTIVE - looked promising with weed control across a broad range of weeds and sowing methods. These products should be available to growers in Australia in the next few years.

The rice crop is emerging faster now with later sowing, the use of precision depth seeders and good water control, so it is difficult to get the knockdown GRAMOXONE on in time. This means the use of post emergence STAM (propanil) is increasing. The photo below shows good weed control with STAM 5L/ha + STOMP 3.4L/ha + MAGISTER 0.5L/ha applied when the rice was at 3-5 leaf stage. Here is a tip: keep an eye on STAM pricing next season!!

However no alternative post flush treatment came close to the efficacy of the 3-way mix (GRAMOXONE + STOMP + MAGISTER). Note STOMP XTRA SC did not work as well as STOMP EC.

The trial plot demonstrates good weed control with STAM 5L/ha + STOMP 3.4L/ha + MAGISTER 0.5L/ha applied when the rice was at 3-5 leaf stage compared to the lighter green buffer strip seen in the background where no weed control occurred.

The trial plot demonstrates good weed control with STAM 5L/ha + STOMP 3.4L/ha + MAGISTER 0.5L/ha applied when the rice was at 3-5 leaf stage compared to the lighter green buffer strip seen in the background where no weed control occurred.

Thanks to weed control researcher Malcolm Taylor for a great day of learning and the opportunity to share ideas, issues and solutions. Malcolm is an enthusiastic supporter for our agronomists.

Thanks to weed control researcher Malcolm Taylor for a great day of learning and the opportunity to share ideas, issues and solutions. Malcolm is an enthusiastic supporter for our agronomists.


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John Broster, Charles Sturt University

Herbicide resistance in rice is a concern to the whole of industry. The AgriFutures R&D panel contracted Charles Sturt University to complete these surveys to assess the status in the field. Barnyard grass, awnless barnyard grass, dirty Dora, starfruit, arrowhead, water plantain, silver top, jerry jerry, and sedge samples were collected and are being screened for resistance to the range of recommended herbicides.

None of John's dirty Dora samples were found resistant to SATURN or MCPA, however 72% of the dirty Dora samples were resistant to LONDAX.

Testing is continuing on dirty Dora resistance to TAIPAN and other weed species collected. The full report will be available soon.

150 billion barnyard seeds were delivered to AGS depots in 2017

153 paddocks were sampled from the appraisal samples collected at receival depots – seeds from 34 different weed species were found.

95% of all samples contained barnyard grass seeds, and John calculated that 331tonnes of barnyard grass seed was delivered to depots last season - that is over 150 billion seeds – Wow!

Mark Stevens, NSW DPI

Mark Stevens, NSW DPI

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Trials have found that rice plants can sustain a large amount of damage before chemical control is justified. After the heads emerge though it is a different story as armyworms bite the spikelets off the panicles.

Mark Stevens is conducting artificial defoliation trials in rice to assess the amount of leaf loss that a rice plant can sustain before yield loss occurs.

This will help growers decide when spraying is necessary.

In his trial removal up to 25% of the length of all leaves resulted in no significant yield loss.

When 50% of the length of all the leaf length was removed, then the plants produced around 87% of the control yield.

For more information go to the latest Rice Crop Protection Guide NSWDPI page 29.

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Brian Dunn, NSW DPI

Brian Dunn, NSW DPI

The NIR Rice Tissue Testing laboratory has been busy again this season. The NIR test allows you to get the best recommendation for how much nitrogen to apply to your crop at topdressing time at PI and optimise your crop yield.
Many growers and agronomists have taken advantage of this free service already this season. Later sown crops can still access this service.

  • 931 NIR samples have been analysed at the Quality Appraisals Centre at Leeton Mill, from 332 fields.
  • 263 fields from the Murray Valley, 35 from the Murrumbidgee and 34 from Coleambally Irrigation area.

For all varieties the average fresh weight has been 674g /0.2m2 sample and average N Uptake 120 kgN/ha, which is similar to last season. This N uptake relates to an average topdressing rate of 60-120 kg urea/ha.


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All eligible students are encouraged to apply.

The Greg Graham Memorial Scholarship provides $10,000 to assist a student with the costs of tertiary education. The Peter Connor Book Award is awarded to the runner-up and consists of $3,000 to put towards the cost of books and course materials.

Application forms and eligibility criteria are available to download from the RGA’s website (here) or by phoning the RGA on (02) 6953 0433.


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Mid-season field walk, Yanco

Monday January 22, 2018
10am - 12pm
NSW Department of Primary Industries
Agricultural Institute, Yanco
 (map) 

Topics:

  • NSW DPI water saving trials, Brian Dunn, NSW DPI
  • Variety development for water use, Peter Snell, NSW DPI
  • Improving your whole grain yield, Mark Groat, Sunrice Grower Service
  • How to utilise data and information collected from drones, Brian Dunn, NSW DPI

This field walk will be followed by the Yanco/Mirool RGA branch meeting and lunch.
For more info click here

Free spray application workshop

Monday 22nd Jan 2018
4PM
“Moyston Park” shed
Aratula N Rd Deniliquin, 
(map)

Topics covered include:
•          weather conditions& inversions
•          nozzles and application efficacy
•          legal obligations
•          managing risk
Please read the flyer here and contact Lachlan Dankert on 0411 825 824 if you would like to attend.

Free spray application workshop

Tuesday 23rd Jan 2018
10AM
Mancini's Shed
Corner of Matthews & Wilma Roads
Griffith

RSVP Emma Ayliffe 0458 307347 

Mid-season field Walk, Bilbul

Wednesday January 24, 2018
9.30AM - 11.30PM
Frank Quarisa's Farm
Swales Road, Bilbul
(map)

Topics:

  • Growing high yielding drill sown crops
  • Improving your whole grain yield, Mark Groat, Sunrice Growers
  • General rice issues
    For more info click here

Mid-season field walk, Benerembah

Tuesday, January 30, 2018
9:30 AM -  11:30 AM
David and Glen Andrighetto's Farm "Allawah"
23 Brogden Rd Tharbogang
 (map)

Topics:

  • Growing high yielding Reiziq
  • Improving your whole grain yield, Mark Groat, SunRice Grower Services
  • General rice issues
    For more info click here

Mid-season field walk, Coleambally

Thursday, February 8, 2018
3:00 PM - 5:00 PM
Ian and Denise Kelly, Farm 189
Hutchings Rd Coleambally
 (map)

Topics:

  • Growing high yielding YRM70
  • Water saving measures
  • Improving your whole grain yield
  • How to utilise data and information collected from drones, Brian Dunn, NSW DPI
    This field walk will be followed by the Coleambally RGA Branch meeting and BBQ
    For more info click here

Mid season field walk, Pretty Pine

Friday February 9, 2018
9.30AM – 11 AM
Pretty Pine Rec Hall  

This field walk will be followed by the Yanco/Mirool RGA branch meeting and lunch 

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Women in Rice

February 22
10AM - 1.30PM
RRAPL "Old Coree"
Jerilderie

More info coming soon.

Organic rice farming system field day

March - more information coming soon

A crop walk at an organic farm where there is a variety trial with some registered organic inputs. Peter Snell from NSW DPI will discuss the trial and varieties.

The SunRice Marketing group will discuss the opportunities that are presenting in the organic market space, consumer trends and what customers are asking for.

2018 Rice Industry Field Day

Thursday March 15 2018 9.30AM – 4.30PM
Yanco Agricultural Institute


(Note there will be no RRAPL. Old Coree Field Day this season. it is replaced with this event at Yanco)


Rice Extension: connecting growers with research, technology and best practice

Troy Mauger (Murray) 0417 375 168 tmauger@rga.org.au
Leah Garnett (Murrumbidgee) 0455 558 035 lgarnett@rga.org.au
Gae Plunkett (Rice Extension Coordinator) 0419 790 019 gplunkett@rga.org.au

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