You are here

herbicide efficacy

Catalogue: GRDC Factsheets
paraquat and spray.seed (paraquat/ diquat) are not registered for pre-harvest application in cereal or oilseed crops and should not be used under any circumstances including in-crop spray topping, pre-harvest canola dessication or under-the-cutter-bar spraying during swathing or windrowing canola... DO NOT use on crops intended for seed DO NOT harvest for 5 days after application to standing crops DO NOT overspray windrows DO NOT apply to standing crops and again at the time of windrowing.. Keeping an accurate spray diary and adhering to recommended application timing and spray intervals as per the label is crucial...
Related categories:
Catalogue: GRDC YouTube channel
" GRDC Grains Research Updates February 15-16 2011, Southern Region, Young NSW. Greg Condon 17 September 2013 Greg Condon, Grassroots Agronomy, talks about Herbicide Efficacy in No-till Farming Systems... Disc seeding into wet soil in the presence of residual pre-emergent herbicides caused a severe reduction in wheat crop vigour compared with the tyne seeder... Tyne seeding resulted in consistently better establishment and early vigour than disc seeding, but weed control was generally similar for both systems....
Related categories:
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...
Related categories:
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...
Related categories:
Catalogue: GRDC Factsheets
The use of Group A herbicides in fallow to control grass weeds such as the Chloris species - feathertop Rhodes grass (Chloris virgata) and windmill grass (Chloris truncata) - have shown to be a viable option for controlling young weeds... Recent research has investigated the use of some of these herbicides for fallow applications to control grass weeds, in particular the Chloris species - feathertop Rhodes grass (Chloris virgata) and windmill grass (C. truncata)... Trial results have shown that a minimum period of 5 to 7 days should occur between applications...
Related categories:
Catalogue: GRDC Factsheets
A tactic that has rapidly increased in recent seasons is the use of pre-emergent herbicides, especially in the summer crop and fallow... The presence of stubble or existing vegetation can intercept herbicide before it reaches the soil surface... In a zero till system, it is most likely that allow for weeds to germinate at depth and effect on the binding ability of herbicides the pre-emergent herbicide will need to grow through the herbicide band on the (adsorption)...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
The recent development of Group A and M multiple-resistant annual ryegrass serves as a stark reminder that persistent use of any herbicide mode of action group can cause resistance... The purpose of the experiment was to determine the best Group A treatments for the control of glyphosate-resistant barnyard grass, when treated at the mid to late tillering growth stage... The purpose of the experiment was to confirm which Group A herbicides provide satisfactory control of glyphosate-resistant barnyard grass under field conditions, and to compare results with those obtained from the glasshouse experiment...
Related categories:
Catalogue: Ground Cover
Correct recording of the variety of saved seed is vital, especially with herbicide-tolerant varieties.. Treating a sown crop variety with the wrong herbicide because you thought the seed sown was tolerant is one costly mistake a few growers have made... Recent random DNA checking of grain receival samples against the variety declared by the grower found that up to 20 per cent of samples were incorrectly declared...
Related categories:
Catalogue: Ground Cover
Correct recording of the variety of saved seed is vital, especially with herbicide-tolerant varieties.. Treating a sown crop variety with the wrong herbicide because you thought the seed sown was tolerant is one costly mistake a few growers have made... Recent random DNA checking of grain receival samples against the variety declared by the grower found that up to 20 per cent of samples were incorrectly declared...
Related categories:
Catalogue: GRDC Updates
Windmill grass (WG) and flaxleaf fleabane have become major weeds of cropping in many parts of Australia... Figure 6: Benefit of double-knock over single herbicide applications on fleabane control - knocks 7 days apart (DEEDI 2009) An additional range of single and double-knock treatments have been evaluated for fallow control of fleabane across Qld and NSW... The results in Figure 8 show the mean level of control of some of the key herbicides over the 4 trials...
Related categories:

Pages