Effect of Soil Texture on Herbicide : not available
Effect of Soil pH on Herbicide : not available
Effect of Soil Organic Matter on Herbicide : Do NOT apply to soils with greater than 10% organic matter. Poor residual and poor radish control in stubble retention systems.
Mode of Action : Shoot absorbed contact, with limited translocation. Some root absorption through surface roots with xylem transport upwards. Germinating seedlings absorb diflufenican through the shoots and roots causing inhibition of photosynthesis (carotenoid inhibitor) in susceptible species. Requires sunlight for action. Pre- and Post- emergent with up to 8 weeks residual control. No significant leaching. Inhibits carotenoid synthesis.
Application Timing : Post sow/pre-emergence (not peas), post-em. Apply once from 2 to 6 leaf stage of crop (4 to 10 cm high) following pre-em treatment of simazine.
Rates Selection : See HerbiGuide
Crop Damage (Crop Tolerance) : May cause yellowing of the crop and height reduction..
Effect on Crop : Some transient crop yellowing or bleaching may occur. The symptoms usually appear as yellow or white banding or blotches on leaves of lupins and lentils. In clovers and field peas the symptoms usually appear as a pink or whitish colouration of the leaf tips and veins. The height of the crop may also be reduced. Pre emergent herbicides from group C (e.g. atrazine, simazine, diuron and metribuzin) may increase crop effects.
21a. Effect on Clover Species :
Soil Moisture at Application :
MOIST - Ideal, soil must be moist at time of application.
Frost Effects : Do not apply to frost affected crops or if frosts are imminent.
Frost Free Days Required After Application : not available
Recommended Water Volume : Minimum 50 L/ha boom. Increase water volume where weed infestation is heavy or crop cover is dense.
Nozzle Type : Best results with fine droplets.
Recommended Nozzle Pressure : not available
Recommended Filter Size : not available
Recommended Wetter : None recommended.
Rain Fastness : 4 hours.
Time Interval Before Effect is Noticed : Complete control may take 6 - 8 weeks.
Plant Symptoms : Susceptible weeds germinate but show immediate chlorosis followed by a mauve - pink discolouration. Chlorosis spreads with aerial growth and plants become necrotic and die back.
Effect of Herbicide/Disease Interaction on Crop : not available
Withholding Period : days.
Plant-Back Period : not available
Spray Tank Clean-Up : Triple rinse spray tank with clean water.
Other Comments : Stir product or invert the container before use as settling of the contents may occur.
Don't use with hard water with more than 500 ppm soluble salts.
Numbered data from "Crop Herbicide Information"
courtesy of A.J. Chambers, Vic. Dept of Food & Agric.
Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.