On Thu, Apr 18, 2013 at 3:37 PM, Dave <[log in to unmask]> wrote:

> Different plant species may indeed move the neonic differently.  As to the
> volume of pesticide, the total volume( lbs/acre) is likely similar.  The
> canola seed is smaller, but the number planted is much greater for canola.
>

The application rate in lbs / acre is VASTLY different.

> On page 14 of EPA Environmental Risk Assessment for clothianidin
>> http://www.scribd.com/doc/46041897/Clothianidin
>>
>
>
> All figures are in pounds of active ingredient per acre (my apologies to
> the metric world but it is the comparison that is important anyway):
>
> mustard (read canola as well)          .028
> wheat                                              .002  to  .011
> barley                                              .004  to  .007
>
> potato                                              .163 to   .325
> cotton                                              .063
> broccoli                                           .39  to    .42
> radish                                              .50   to   .67
> corn                                                 .007 to   .011
> head lettuce                                     .70  to    2.25
> leaf lettuce                                       .68  to    2.26
>
> So there could be 220 times as much loading to the soil in lettuce as in
> corn.
> There is 1000 fold difference between the low rate in wheat and the high
> rate in lettuce.
>

Paul points out that lettuce, broccoli and radish are not permitted uses
*right now* in the US, but compare potatoes with canola or cotton with
wheat.  They are all seed treated but loading rate is very different.
Stan

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