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weed control

Catalogue: GRDC Media
Well managed weed control plays a vital role in the production of profitable winter crops as weeds can have a significant impact on yield by competing for moisture, nutrients, space and light as well as harbouring diseases... Most growers understand that weed control needs to be considered on a whole-of-farm basis, being particularly conscious of the cropping and chemical rotations where residual herbicides are applied... Residual herbicides are applied to the soil in order to kill weeds by root/shoot uptake and can remain active in the ground for a few weeks up to a few years...
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Catalogue: GRDC Media
Well managed weed control plays a vital role in the production of profitable winter crops as weeds can have a significant impact on yield by competing for moisture, nutrients, space and light as well as harbouring diseases... Most growers understand that weed control needs to be considered on a whole-of-farm basis, being particularly conscious of the cropping and chemical rotations where residual herbicides are applied... Before deciding on whether or not to include a herbicide in a control program, growers need a thorough knowledge of the target weed including weed identification, biology and susceptible growth stages; the herbicide including its mode of action (chemical grouping) and application methodology; and site conditions such as soil moisture, surrounding plants, weather conditions and soil characteristics...
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Catalogue: GRDC Media
CQ growers applauded for R&D adoption.. Numerous growers expressed their appreciation of the GRDC-funded research into new pulse crop varieties and particularly the endeavours of Col Douglas from the Queensland Department of Agriculture, Fisheries and Forestry (DAFF) and Dr Kristy Hobson from the NSW Department of Primary Industries, Tamworth in developing pulse varieties better suited to the Central Queensland environment... Looking to the future, the region stands to benefit from the recent announcement by DAFF and GRDC of six new research and support positions for Central Queensland which will boost the industry's capacity to make further gains in farming systems production through better servicing growers with agronomy, research and extension...
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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)...
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Catalogue: Nuffield Scholar Reports
The study is about the management of weeds in those HTGM crops that have been grown overseas... Reduced tillage/no-till/zero-till Conventional agricultural practice involved cultivation prior to sowing of a crop or pasture to kill weeds and prepare the seed bed... but only for a while" Phil Stahlman Weed scientist Kansas State University Going to a total RR system in the corn-soybean rotation has, I believe, made farmers lazy with many just using glyphosate for weed control...
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Catalogue: GRDC Factsheets
Brome grass is becoming an increasing problem... Both species are commonly referred to as ripgut brome often resulting in confusion over correct identification... Recent research has shown that seed collected from field populations of both species are showing longer dormancy which appears to be under hormonal control within the seed embryo...
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Catalogue: Broadacre Field Crops DAFF QLD
There are a number of reasons for this: reliance on glyphosate for the majority of grass control limited options for fallow control other than glyphosate limited post-emergent options for control in crop high seed production usually present in the field in high densities... Becoming familiar with what MOA group a herbicide comes from will enable more effective long-term weed control... Review the control achieved, and adjust future management strategies ...
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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...
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Catalogue: GRDC Factsheets
TAKe THe TeST fOr HerBiCide reSiSTAnCe.. Syngenta offers a riSQ (resistance in-Season Quick) test for resistance to AXiAL , TOPiK and Select (Group A), Crusader (Group B) and glyphosate (Group M) herbicides in ryegrass and wild oats... Weed Seed Wizard can investigate the impact of a wide range of management strategies (such as grazing, harvest seed control, increased crop competition, rotation change and various seed set controls such as crop topping and hay making) on the seed and weed numbers of annual ryegrass, wild radish, wild oats, barley grass and brome grass...
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Catalogue: GRDC Factsheets
Wild radish has developed resistance to many herbicide modes of action... Populations resistant to glyphosate have recently been confirmed... An autumn tickle can be conducted using a range of equipment including tyned implements, skim ploughs, heavy harrows, pinwheel (stubble) rakes, dump rakes and disc chains...
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