Glyphosate then SpraySeed
3 ACTIVE INGREDIENTS: Glyphosate 450g/L then diquat 115g/L plus paraquat 135g/L

Formulation: Water soluble

4 CHEMICAL GROUP: M,L

Inhibitor of EPSP synthase and inhibitor of photosynthesis at photosystem I.

6 GENERAL DESCRIPTION:

This method of applying glyphosate followed by Spray.Seed 3-10 days later provides control of a wider range of weeds than either herbicide alone and will reduce the risk of development of resistance to glyphosate and bipyridyls such as Spray.Seed.

See individual components for more information.

7 APPLICATION METHODS AND TIPS:

Apply in fine weather when plants are actively growing.

Drought or nitrogen stressed plants are difficult to kill with glyphosate.

If plants have been heavily grazed or defoliated they should be allowed to regrow until the root:shoot ratio is around 1 before application of herbicide or the rate of herbicide may need to be increased to achieve effective control.

14 HERBICIDE RESISTANCE:

Herbicide resistance is unlikely to develop when using this technique.

15 REPLANTING INTERVALS:

CropTime
Most cropsA few hours to a few days.

16 WITHHOLDING PERIODS:

CropTypeTime
AllHarvest 
AllGrazing 

17 RE-ENTRY PERIOD:

18 PROTECTIVE CLOTHING:

19 SOIL:

20 MODE OF ACTION:

The initial glyphosate spray is absorbed and translocated throughout the plant. The follow up Spray.Seed rapidly destroys green leaf material and this reduces the plants ability to recover from the glyphosate.

Selectivity:

Non selective.

23 PLANT SYMPTOMS:

Little effect is seen following the glyphosate application. Desiccation of plants is usually seen within a day or tow of the Spray.Seed application.

33 REFERENCES:

Moore, J.H. (1984) Plant Research Division Experimental Summaries. Department of Agriculture of WA.

Acknowledgments:

Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.