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contact herbicide

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Catalogue: GRDC Media
Western Australian research investigating herbicide control of wild radish in cereal crops has highlighted the importance of good spraying conditions to maximise chemical uptake by the weed... It has also shown the importance of combining herbicides with different modes of action to maximise wild radish control, especially where herbicide resistance is suspected... "It is critical that, where possible, growers take advantage of good spraying conditions to maximise wild radish control to not only grow grain but also prevent radish seeds returning to the seed bank and further compounding the problem."..
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: Ground Cover
Detection technology maximises fallow control.. Tony Cooke, NSW DPI (Above) Weed detection technology like this WeedSeeker boomspray is said to allow growers to apply contact herbicides across just two per cent of their paddocks, saving considerably on herbicide use... "We should be aiming to annihilate small patches of weeds before they blow out and become a problem, and that's where weed detection technology hopefully will fit," he said...
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Catalogue: Ground Cover
US studies highlight droplet impact.. Since 1996, glyphosate has been the predominant post-emergence herbicide for weed control in maize, soybeans and cotton in the US. Due to this, glyphosate-resistant weeds have become increasingly prevalent in glyphosate-resistant crops, forcing many growers to use other herbicides... A series of studies in the US have measured the influence of carrier volume on droplet size and weed control using four different post-emergence herbicides with four different modes of action for weeds in soybeans...
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Catalogue: GRDC Media
Achieving the balance will be discussed during a short Spray application in summer fallows webinar, supported by the Grains Research and Development Corporation (GRDC)... "Changing weed species, changing climate patterns and the requirement for double knock applications using contact herbicides to control difficult weeds has seen a significant increase in summer fallow herbicide applications in most broadacre no-tillage farming systems in WA," he said... Understanding stubble and soil binding of pre-emergent herbicides used for ryegrass control in winter crops , December 13: This webinar will investigate the properties of key pre-emergent herbicides pyroxasulfone (Sakura ), prosulfocarb/s-metolachlor (Boxer Gold), dimethenamid-P (Outlook ) and trifluralin (Treflan ) and how the herbicide properties affect stubble binding and soil mobility...
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