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Dr Steven Simpfendorfer presented trial results showing the impact of inter-row sowing on crown rot, at the 1st International Crown Rot Workshop for Wheat Improvement
Controlling Phytophthora root rot (PRR) in chickpea crops is a two-step process, says Dr Kevin Moore, a plant pathologist from the New South Wales Department of Primary Industries (DPI) in Tamworth.
Crop rotation is the key to yellow spot management with winter cereal growers urged to make crucial decisions prior to planting to minimise the risk of incursions.
Leading plant pathologist Dr Kevin Moore, NSW Department of Primary Industries (NSW DPI), Tamworth is warning growers that complacency presents the biggest threat to northern chickpea crops this year.
If you do not want to be concerned by yellow spot in 2013 (including at seedling stages) then:
1. DO NOT sow wheat-on-wheat
2. If you are going to sow wheat-on-wheat consider a late (autumn) stubble burn and/or
3. Select a wheat variety with some level of resistance to yellow spot (note tolerance/resistance...
• Plant only high quality seed that has been germ and vigour tested and treated with a registered seed dressing
• Avoid poorly drained paddocks and those with a history of lucerne, medics or chickpea Phytophthora root rot, PRR; do not grow Boundary if you even suspect a PRR risk
• Select best variety suited...
• In durum low plant populations coupled with an early sowing time reduced yield loss to crown rot by 50% compared to a later sowing time with a higher plant population (25% yield loss to crown rot).
• A full profile of soil water at the start of the 2012 season at...
Are you still deciding what crop to grow this winter? New South Wales Department of Primary Industries research scientist Dr Steven Simpfendorfer has one primary message – do not grow wheat-on-wheat if you want to avoid the leaf disease yellow spot.
• Plant only high quality seed that has been germ and vigour tested and treated with a registered seed dressing
• Avoid poorly drained paddocks and those with a history of lucerne, medics or chickpea Phytophthora root rot, PRR; do not grow Boundary if you even suspect a PRR risk
• Select best variety suited...
• Plant only high quality seed that has been germ and vigour tested and treated with a registered seed dressing
• Avoid poorly drained paddocks and those with a history of lucerne, medics or chickpea Phytophthora root rot, PRR; do not grow Boundary if you even suspect a PRR risk
• Select best variety suited...
• In seasons with good moisture profiles at sowing, high yielding lines such as EGA Gregory and Suntop perform relatively well across all sowing dates, favouring plantings from early to mid-May.
• Where moisture profiles at sowing are below average there may be scope to increase the proportion of shorter season varieties.
• As well...
1. Wheat variety selection, based on Pratylenchus thornei (Pt) tolerance rankings, is a critical tool to reduce yield and economic loss when wheat is grown in the presence of Pt
2. Size does matter. Increased populations of Pt significantly reduced yield and economic returns in Pt intolerant wheat varieties
3. Pt reduced leaf area...
• Impact of crown rot on yield and quality is a balancing act between inoculum levels and soil water
• The balance is heavily tipped towards soil water yet most management strategies focus heavily on combating inoculum, sometimes to the detriment of soil water
• Any management strategy that limits storage of soil water or...
If you do not want to be concerned by yellow spot in 2013 (including at seedling stages) then:
1. DO NOT sow wheat-on-wheat
2. If you are going to sow wheat-on-wheat consider a late (autumn) stubble burn and/or
3. Select a wheat variety with some level of resistance to yellow spot (note tolerance/resistance...
Crown rot, nematodes and an unexpected drop in protein levels dealt Moree, NSW-district grain growers a hefty blow to the tune of about $30 million in the 2012 winter crop season.
Dr Steven Simpfendorfer, NSW Department of Primary Industries research scientist, Tamworth, NSW leads Grains Research and Development Corporation (GRDC) supported pathogen research and says poorly considered advice is costing the grains industry millions of dollars.
Chickpea seed tests from the 2010 harvest have shed light on establishment problems in last season’s crops.
Root lesion nematodes (RLNs), especially Pratylenchus thornei (Pt) but also Pratylenchus neglectus (Pn), can often reduce crop yields, epecially wheat, by over 50 per cent.
There were several commercial wheat crops in northern NSW in 2011 that experienced high levels of crown rot even though they had come out of good rotations, such as canola and double-cropped chickpeas after sorghum.
New GRDC-supported research shows the timing of fungicide applications has a major bearing on stripe rust control in the moderately susceptible (MS) wheat variety EllisonA.
1. Based on marker analysis, 16 of the 23 commercial Sunvale seed lots (70%) contained a level of varietal contamination of at least 5%. This result was supported by careful field observations of plant/head type and stripe rust reactions. 2. One sample contained 0% Sunvale and appears to be a...
1. The root lesion nematode Pratylenchus thornei is widespread, detected in 70% of paddocks and at populations representing a risk of yield loss in intolerant varieties in 33% of the 248 paddocks surveyed. 2. The root lesion nematode Pratylenchus neglectus has a more restricted distribution, detected in 38% of paddocks...
Seed test results from the 2010 season help explain why many 2011 chickpea crops had problems with establishment and seedling disease. More than half the seed lots were infected with Botrytis and 89% were colonised by other fungi. Fungal infection, weathering of seed and inadequate seed treatment were the major...
Treating chickpea seed with registered seed dressings controls seedling disease, improves crop establishment and increases yield but proper coverage and rate are essential.
Plant seed of high quality that has been properly treated with a registered seed dressing. Follow the disease management recommendations in this article and associated links – they will maximise your chance of a profitable chickpea crop in 2012. Even though Ascochyta and BGM did not cause widespread losses in...
In the moderately susceptible (MS) variety Ellison: 1. Flutriafol (Intake) in-furrow was the best of the up-front options when not backed up by an in-crop fungicide application. 2. Similar levels of disease control and yield benefit were obtained with in-crop sprays at GS32 + GS39. 3. A single in-crop spray...
1. Wheat variety choice can have a huge impact on yield loss to Pt (up to 43% yield loss in intolerant bread wheat varieties in 2011). 2. Yield losses from Pt were exacerbated by delayed sowing and drier conditions. 3. Crown rot remains an important disease of winter cereals causing...
New figures show soil-borne threats to production are widespread across the northern grains region, with a survey showing high levels of fungal pathogens and both types of root lesion nematode.
Surveys of commercial 2011 chickpea crops confirmed the value of seed treatment and highlighted the importance of correct application.
The relationship between root lesion nematode populations and crown rot is being explored to improve winter cereal disease management.
Root lesion nematodes are widespread in region, especially Pratylenchus thornei Common root rot pathogen and Pythium very widespread, at generally low populations, but their build-up is expected to have been favoured by wet conditions in 2010.
Unless you fully understand and appreciate the risk of chickpea diseases, do not plant, or advise others to plant, chickpeas in 2011. The threat from seed-borne, foliar and root diseases is higher than it has ever been Mild temperatures, long cloudy periods and frequent rainfall events across the Northern region...
Unless you fully understand and appreciate the risk of chickpea diseases, do not plant, or advise others to plant, chickpeas in 2011. The threat from seed-borne, foliar and root diseases is higher than it has ever been Mild temperatures, long cloudy periods and frequent rainfall events across the Northern region...
Unless you fully understand and appreciate the risk of chickpea diseases, do not plant, or advise others to plant, chickpeas in 2011. The threat from seed-borne, foliar and root diseases is higher than it has ever been Mild temperatures, long cloudy periods and frequent rainfall events across the Northern region...
Unless you fully understand and appreciate the risk of chickpea diseases, do not plant, or advise others to plant, chickpeas in 2011. The threat from seed-borne, foliar and root diseases is higher than it has ever been Mild temperatures, long cloudy periods and frequent rainfall events across the Northern region...
• quality chickpea planting seed will be in short supply in 2011 • there is a high risk that grower retained seed will have poor germination and vigour, as well as being infected with seed-borne pathogens • consider purchasing seed from commercial suppliers • regardless of source, test all planting...
Chickpea specialists are urging caution about planting chickpeas in the northern region this year, unless you are an experienced chickpea grower