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spray application

Catalogue: GRDC Factsheets
Of SurfACe TemPerATure SPrAy OPerATiOnS in cooling night conditions airborne pesticides can concentrate near the surface and unpredictable winds can move droplets away from the target... During surface temperature inversions, air near the ground lacks turbulence... SOurCe GrAeme TePPer under a surface temperature inversion: air movement is much less turbulent so the air does not mix in the same way as during the day; airborne droplets can remain concentrated in the inversion layer for long periods of time; the direction and distance pesticides movement is very hard to predict; the movement of airborne droplets will vary depending on the landscape; and droplets or their remnants can move in different ways (figure 3)...
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Catalogue: GRDC Factsheets
Of SurfACe TemPerATure SPrAy OPerATiOnS in cooling night conditions airborne pesticides can concentrate near the surface and unpredictable winds can move droplets away from the target... During surface temperature inversions, air near the ground lacks turbulence... SOurCe GrAeme TePPer under a surface temperature inversion: air movement is much less turbulent so the air does not mix in the same way as during the day; airborne droplets can remain concentrated in the inversion layer for long periods of time; the direction and distance pesticides movement is very hard to predict; the movement of airborne droplets will vary depending on the landscape; and droplets or their remnants can move in different ways (figure 3)...
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Catalogue: GRDC Factsheets
" RepRinted july 2014 summerfallow FACTSHEET spraying northern, southern and western regions ImPLICATIOnS fOr nOzzLe SeLeCTIOn And QuALITy frOm reCenT TrIAL reSuLTS.. plan to control summer weeds early and have the sprayer ready to go If spraying to conserve soil moisture and retain nutrients over summer, early weed fallow control can increase the yield potential of future crops... Trials 2 & 3: Heliotrope control at mintaro, sa Site and treatment details: Site location: mintaro, mid-north of South Australia Spraying date: 13 february 2012 Site condition: a bean stubble, with all residue lying on the ground Target species: heliotrope, 10 to 20cm high, flowering to seed set, variable density Spraying conditions: temperature 29.3 C to 32.8 C, humidity 13 to 16 per cent, delta T of 14.5 to 15.5, wind speed average 7.7km/h, gusts to 16.5km/h, very warm afternoon Herbicide treatments: 1...
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Catalogue: GRDC Factsheets
" RepRinted july 2014 summerfallow FACTSHEET spraying northern, southern and western regions ImPLICATIOnS fOr nOzzLe SeLeCTIOn And QuALITy frOm reCenT TrIAL reSuLTS.. plan to control summer weeds early and have the sprayer ready to go If spraying to conserve soil moisture and retain nutrients over summer, early weed fallow control can increase the yield potential of future crops... Trials 2 & 3: Heliotrope control at mintaro, sa Site and treatment details: Site location: mintaro, mid-north of South Australia Spraying date: 13 february 2012 Site condition: a bean stubble, with all residue lying on the ground Target species: heliotrope, 10 to 20cm high, flowering to seed set, variable density Spraying conditions: temperature 29.3 C to 32.8 C, humidity 13 to 16 per cent, delta T of 14.5 to 15.5, wind speed average 7.7km/h, gusts to 16.5km/h, very warm afternoon Herbicide treatments: 1...
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Catalogue: GRDC Media
Grain growers are urged to have the sprayer ready to go and to spray summer weeds early in order to conserve moisture and increase the yield potential of future crops... A new Grains Research and Development Corporation (GRDC) fact sheet, Summer Fallow Spraying, gives growers and advisers the latest information for spray application and quality resulting from GRDC-funded research... Choose the coarsest spray quality that will provide efficacy with the products selected...
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Catalogue: GRDC Media
The Grains Research and Development Corporation (GRDC) has recently published a series of fact sheets aimed at helping growers achieve best practice in spray application... Robust rates of products and appropriate water rates are often more important for achieving efficacy than the nozzle type, but, correct nozzle type can widen the spray window, improve deposition and reduce drift risk... Log in or register to leave a comment...
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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...
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Catalogue: GRDC Media
University of Adelaide's Dr Gurjeet Gill says growers in the Pinery fire zone will need to seed quickly following the sprayer to avoid problems with drifting... Growers with bare soils affected by fire are being asked to be mindful of pre-emergent herbicide rates ahead of seeding in 2016, with a lack of organic matter on the surface meaning chemicals will penetrate the soil more readily than normal... Dr Gill says growers will need to seed quickly following the sprayer to avoid problems with drifting...
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Catalogue: GRDC Media
University of Adelaide's Dr Gurjeet Gill says growers in the Pinery fire zone will need to seed quickly following the sprayer to avoid problems with drifting... Growers with bare soils affected by fire are being asked to be mindful of pre-emergent herbicide rates ahead of seeding in 2016, with a lack of organic matter on the surface meaning chemicals will penetrate the soil more readily than normal... Dr Gill says growers will need to seed quickly following the sprayer to avoid problems with drifting...
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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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