Posts in Pests
Monitoring rice crops for pest and disease biosecurity threats. (March 2015)

This Poster presented at the Rice field day at RRAPL in March 2015. The poster presents and overview of current monitoring and projects into pest and disease bio security threat. It presents signs and symptoms of disease currently seen in Australian rice crops and solutions. The presentation covered these areas in greater detail.

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Rice Extension on the New Grower Services Web Portal for SunRice (2014)

Access to the RICE EXTENSION TAB will be for all growers who will have a login, and also to Advisors, non-SunRice growers, researchers who will need to be set up with a login password access. This group are an important link for future extension to be successful.

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Improving rice water use efficiency - Direct Drilling of rice and Precision Farming (June 2014)


Water use efficiency is a driving factor for the Australian rice industry. Australian rice farmers grow rice in one of the driest continents in the world, achieving some of the world’s highest yields per hectare and water use efficiency per kilogram produced (Dunn & Pal Singh, 2013). In recent years, the availability of water for agricultural production has been reduced significantly as a result of government policy. Australian rice farmers are also under constant scrutiny to justify their water usage, so need to develop new technologies and practices. Historically Australia is one of the few countries to establish a rice crop by flying rice seed into a flooded bay. The majority of the countries visited establish their crops by drilling seed into the soil and establish by flushing. In Australia, this technique could be more broadly adopted with significant savings in water use and input costs.

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Managing rice snails with copper sulphate - RIRDC Project PRJ - 005685 (2013)


Snails in rice crops are becoming a more significant problem for growers because of increased levels of repeat cropping aimed at maximising water use efficiency. Repeat cropping allows dormant snails to survive in the soil. Research on copper sulphate aimed at gaining product registration and ensuring its ongoing availability for snail control has shown that its variable performance relates strongly to soil type. Higher application rates are needed to the water above soils rich in dissolved organic carbon.  Even above soils low in dissolved organic carbon, biologically active copper concentrations fall dramatically within an hour of application.  Although soil testing could allow copper application rates to be ‘fine-tuned’ for individual fields, finding alternative chemicals unaffected by soil type should be a higher priority.

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Armyworms in rice (August 2013)

The common armyworm Leucania convecta (Mythimna convecta) was a serious problem for NSW rice producers during the 2011/12 and 2012/13 rice seasons, particularly in the Murray Valley. Major crop damage occurred, partly as a consequence of inadequate crop monitoring in the period leading up to harvest, and also for logistical reasons, principally a shortage of aircraft and poor weather conditions preventing prompt chemical application. Agronomists have estimated that around 60% of Murray Valley rice crops required spraying for armyworm during the 2012/13 season.

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Primefact: Armyworms in rice (August 2013)

This NSW DPI fact sheet gives information in regard to Armyworm in rice. Seasons 2011/12 and 2012/13 saw significant impact of armyworm on rice with estimates of 60% of crops in Murray Valley requiring spraying treatment. This fact sheet covers in information on the biology and management of armyworm in rice.  It also gives guidelines for crop monitoring and contact details for further information.


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Exotic Pest Alert: Rice blast (July 2012)

This DPI NSW Fact sheet is a brief overview of rice blast. The fact sheet, give s a brief introduction on rice blast and effect to Australia. Followed by the symptoms to be observed and where for example leaf blast, collar rot, node infection, neck rot and panicle blast. The factsheet also provides information on host, disease cycle, actions to minimise risk and reporting. Information contact details are provided for further information. 

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Exotic Pest Alert: Bakanae (July 2012)

This DPI NSW Fact sheet is a brief overview of Bakanae. The fact sheet presents a brief introduction Bakanae and effect to Australia rice. Followed by the symptoms to be observed and where for example on the plant to look for the fungus. This is followers by an explanation of the disease cycle, the types of host including rice, sugar cane and sorghum, reporting of the disease and further reading available.

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Exotic Pest Alert: Rice water weevil (July 2012)

This DPI NSW Fact sheet is a brief overview of Rice weevil. The fact sheet presents a brief introduction rice weevil and effect to Australia rice.. Followed by the symptoms to be observed and where for example on the plant to look for symptoms. This is followed by an explanation of the disease cycle, the types of host including, reporting of the disease and further reading available.

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Stink bug numbers much higher in 2007 (2008)

This IREC Farmers Newsletter article reports Stink bug numbers in 2007 rice crops were approximately six times higher than in the previous season.  The surveys undertaken showed that 84% of stink bugs collected during the 2-year survey were a species known as Anaxilaus vesiculosus, which was not previously known to feed on rice . Anaxilaus was reared from egg to adulthood on rice plants with no other food source. Grain from the plants used to rear the bugs showed high levels of feeding damage, confirming the relationship between Anaxilaus and ‘pecky’ rice . The report covers the survey results, grain damage by stink bugs, option controls and seasonal differences and climate changes.

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New weed management options for Australian rice - RIRDC Project AGR-9A (2008)

Not sowing rice may be a valid herbicide resistance strategy but it is clearly not a preferred pathway for 1600 Riverina rice farmers who remain frustrated with a productive farming system, a strong market for their crop, an innovative processing company, but no water to produce their crop! With long lead times to attain a registered herbicide in rice, our research program for weed control is focussed ahead for the times when irrigation water is once again available.  With long lead times to attain a registered herbicide in rice, our research program for weed control is focussed ahead for the times when irrigation water is once again available.   As a result of contacts made in Japan and the USA during and prior to 2006, four herbicide candidates were field tested in Australia during the 2006–07 summer.  Two experimental herbicides have been identified, one for grass weed control and another for broadleaf and sedge weeds, both of which potentially present new modes of action.

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Stink Bugs- a new pest to deal with? (2007)

This IREC Farmers Newsletter article reports on a project undertaken By NSW DPI with RIRDC funding investigating on Stink Bugs Stink bugs in rice crops can affect grain quality, and at high densities can reduce yields. A recent survey found seven stink bug species in NSW rice crops, although the population densities of pest species were very low. Farmers are strongly encouraged to monitor their rice crops for stink bugs as seasonal variation may have an impact on the numbers of the bugs. The report covers what species are present in NSW rice and what a problems they pose. It also covers seasonal variability and who to inform and how to keep and eye of for stink bugs. 

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