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Drift problems continue in Arkansas rice
Weed Consultants, for DA
Most are the normal glyphosate or Newpath drift onto seedling rice. With the increased corn acreage, however, several have involved glyphosate with atrazine and other tank mix partners.

Most drift situations come down to wind speed and direction and the proximity of susceptible crops. You see the normal aerial and ground applications that never should have been put out.

There continues to be a misconception that a ground rig if drift-proof if it is running air induction nozzles with the boom low to the ground and perhaps some drift control agent in the tank.

Nobody seemed to like anything the Glyphosate Task Force or the Arkansas State Plant Board tried to do to help the drift situation.
However, enough poor application judgment will likely result in increased regulation.

When a formulation includes a surfactant, the manufacturer has to assume a herbicide rate and spray volume in order to get the desired surfactant concentration in the final spray mix. I do not know what those figures are.

For example, though it is 1 quart per acre in a 20 gpa spray volume, rates are often higher than that now and spray volumes are generally lower. A lot of glyphosate is sprayed in 5 gpa volumes or less. This results in a concentration of surfactant in the spray mix.

If you turn around and add another surfactant to that, you may be spraying soap bubbles! Surfactants affect surface tension and surface tension can affect spray droplet size. You do not need additional surfactant in a formulation that already contains one.

The general weed control situation in much of the rice is excellent. In most areas, weed control has been even easier than last year.

However, there is also a lot of late planted rice due to prolonged wet conditions in some areas. It remains to be seen if we get the excellent conditions to make things easy in the later planted rice.

Regardless of how good things are, there will be some “big grass” situations and some of those calls are coming in. The big grass treatments can include Ricestar HT plus Facet preflood; Facet plus oil either just ahead of the flood or into a shallow flood if sprangletop is not in the mix; Regiment or Regiment plus Facet where barnyardgrass is the primary grass; and Clincher or Clincher plus Facet post-flood.
MGR Archive 27.5.2007
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Region Type Price  
Russia Rapan $ 700
USA Jupiter Rice $630
USA Calrose #1 $830
USA Calrose #1 Paddy $480
EU Prices Baldo €660
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