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Catalogue: GRDC Media
"There are no magic bullets when it comes to pre-emergent spraying," said Mr Gordon, of Bill Gordon Consulting, Lawrence, NSW. ".. Getting a good result is about doing all of the little things well, from product selection to match the weed spectrum present, through to monitoring the spray results carefully.".. To assist growers with the spraying programs, Mr Gordon emphasised the importance of the basic elements, the three Ts: The target "Know your target - it is critical to ensure that the product selected is the most appropriate for the weeds present and the situation," Mr Gordon said...
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Catalogue: GRDC Media
"There are no magic bullets when it comes to pre-emergent spraying," said Mr Gordon, of Bill Gordon Consulting, Lawrence, NSW. ".. Getting a good result is about doing all of the little things well, from product selection to match the weed spectrum present, through to monitoring the spray results carefully.".. To assist growers with the spraying programs, Mr Gordon emphasised the importance of the basic elements, the three Ts: The target "Know your target - it is critical to ensure that the product selected is the most appropriate for the weeds present and the situation," Mr Gordon said...
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Catalogue: Ground Cover
In upcoming editions of Ground Cover we will be running a column focusing on application, as well as releasing fact sheets about spraying and drift reduction... In the edition we are discussing summer fallow set-ups and techniques that can improve efficacy while reducing drift potential... The article below on summer fallow spraying discusses how larger droplets can provide excellent efficacy, and that nozzle type and orientation can play an important role in making larger droplets even more effective, particularly on larger targets...
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Catalogue: GRDC Media
Three sets of plant samples of the same variety, showing Charcoal Rot (reddish-purple-black stems), Water Stress (pale, white stems) and Full Water (healthy green stems)... Grains Research and Development Corporation (GRDC) supported research suggests that black layer (abscission layer) formation in the field is the best tool to safely schedule spray-out timing as it can help growers determine their risk approach and modify it as needed on a paddock and variety basis... When spraying, Mr McIntosh said growers needed to ensure that application was carried out in the prime time of day, usually early morning when stomates are open; ensure water quality was good, water volume adequate and adhere to seven days withholding period...
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Catalogue: NVT Online Papers
Field experiments were at weed-free sites, where yields were compared between those sprayed with registered herbicides at the recommended and double rates with untreated controls for each cultivar... Vlamingh Rate (product/ha) Crop stage at spraying 0.30 + 0.47L 5-7 leaf + 3-6 tiller 0.1L 3 leaf + 1 tiller 1.5L Pre-plant 1.5L 2-6 leaf + 1-4 tiller.. Baxter Braewood Caparoi Carinya Cunningham EGA Bellaroi EGA Bounty EGA Burke EGA Gregory EGA Hume EGA Kidman EGA Stampede EGA Wentworth EGA Wills EGA Wylie Ellison GBA Hunter GBA Ruby GBA Sapphire Giles Hartog Jandaroi Kamilaroi Kennedy Lang Leichhardt Livingston LR Crusader LR Dakota LR Hornet Merinda Petrie QALBis Rees Strzelecki Sunbri Sunbrook Sunco Sunlin Sunstate Sunvale Sunvex Sunzell Ventura Wollaroi Yallaroi Rate (product/ha) Crop stage at spraying (clodinafop) 9(4) 9(2) 9(4) 9(3) 9(1) 9(4) 9(1) 9(3) 9(1) N (1/4) 9(5) 9(4) N (1/4) 9(4) 9(4) 9(4) 9(3) 9(1) 9(4) 9(4) 9(4) 9(4) 9(4) 9(4) 13 (1/4)..
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Catalogue: GRDC Media
Sprayer setup and using good quality water are critical to ensure full rates of glyphosate are getting to the weeds... Dr Boutsalis says a common reason for poor weed control when using glyphosate is herbicide resistance, ranging from weak resistance to strong resistance... Plants with weak resistance are often controlled with maximum label rates of glyphosate, Dr Boutsalis says, but relying on a herbicide-only option will develop resistance to very high rates...
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Catalogue: GRDC Media
Sprayer setup and using good quality water are critical to ensure full rates of glyphosate are getting to the weeds... Dr Boutsalis says a common reason for poor weed control when using glyphosate is herbicide resistance, ranging from weak resistance to strong resistance... Plants with weak resistance are often controlled with maximum label rates of glyphosate, Dr Boutsalis says, but relying on a herbicide-only option will develop resistance to very high rates...
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Catalogue: GRDC Media
Grain growers in the southern cropping region are being offered practical advice on the correct use of auto boom spray height control systems... The Grains Research and Development Corporation (GRDC) has developed a Spray Height Control Fact Sheet which provides useful information on the types of auto height boom systems available, the importance of maintaining optimum height, set up considerations and calibration requirements... The Fact Sheet states that when properly adjusted, auto boom height control systems can allow the operator to focus on monitoring other machine functions, which improves spray accuracy and reduces operator fatigue...
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Catalogue: NVT Online Papers
In 2012 small plots with the same row spacing and plant populations as standard trials were used ... The results for named cultivars are included in the following table but will be incorporated into the main table as more data becomes available... The sensitivity of the variety is summarised, using the following symbols based on the yield responses across all trials: no significant yield reductions at a higher than recommended rates in (x) trials but not screened at a recommended rate N (narrow margin) significant yield reductions at higher than recommended rate in 1+ trials, but not screened at a recommended rate..
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Catalogue: NVT Online Papers
The research has been conducted across the Victorian Mallee to determine if new and existing varieties of barley vary in tolerance to commonly used herbicides.. The sensitivity of the variety is summarised, using the following symbols based on the yield responses across all trials: - not tested or insufficient data (z) no significant yield reductions at recommended rates or higher than recommended rates in (z) trials N (w/z) narrow margin, significant yield reductions at higher than recommended rate, but not at recommended rate significant event occurring w years out of z years tested... Rates (product/ha) Crop stage at spraying (2) (2) (2) (3) N(1/3) (1) (2) (2) (2) (2) (2) (2) (1) (2) (2) (2) (1) (2) (2) (2) N(1/3) (1) N(1/3) (2) (2) (2) (2) (2) (3) (2) > 1.4L 3 leaf (2) (2) (2) (3) (3) (1) (2) N(1/2) (2) (2) N(1/2) (2) (1) (2) (2) (2) (1) N(1/2) N(2/2) (2) N(1/3) (1) (3) (2) (2) (2) (2) (2) (3) N(1/2) > 200g 5 leaf (2) (2) (2) (2) (2) (1) (2) (2) (2) (1) (1) (1) (2) (2) (1) (1) (2) (1) (2) (3) (1) (3) (2) (2) N(1/2) (1) N(1/2) (3) (2) > 1.0L 4 leaf (2) N(1/2) (2) (3) N(1/3) (1) (2) (2) (2) (2) N(1/2) (2) (1) (2) N(1/2) (2) N(1/1) (2) (2) (2) (3) (1) (3) (2) N(1/2) (2) N(1/2) N(1/2) N(1/3) (2) > 500mL + 350mL 3 leaf (2) (2) (2) (3)..
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