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Old 27-08-2003, 07:22 AM
Brian Sandle
 
Posts: n/a
Default Bt pesticide resistance

In sci.med.nutrition Mooshie peas wrote:
On 24 Aug 2003 03:23:31 GMT, Brian Sandle
posted:


Mooshie peas wrote:
On 20 Aug 2003 06:11:20 GMT, Brian Sandle
posted:


In sci.agriculture Mooshie peas wrote:
On 17 Aug 2003 12:53:23 GMT, Brian Sandle
posted:

Why do you think the NZ
Royal Commission recommended education about refuges before releasing GM
crops?

The NZ RC has a bad taste in it's mouth after that lady professor lied
to them with phony evidence.

No she didn't.


Yes she did.


She worked in the subject, and understands it.


And lied about results she claimed to a Royal Commission.


Both you and Gordon are claiming that and not backing it up.

I wonder why someone who was so understanding of the subject needed to
do this.


As you showed on
sci.med.nutrition you even thought fish oil capsules are mainly
peanut oil.


No, I suggsted that the balance of oils in an oil capsule would be the
cheapst available, and peanut oil is a very common pharmaceutical
vehicle. The poster was asking what the balance would be from the
labelled ingredients. I still don't know that it is all fish oil, as
if it makes any difference. What has this to do with lying about
scientific evidence to a Royal Commission?


It has to do with how confused you are and so how you might be confused in
other ways.

And the refuges are mandatory in the US. But the seed companies may not be
insistant that they are applied since it means they only sell half the GM
seed.

Aren't the refuges for pest predators? Why would you want refuges for
the pests?

So there is a refuge of non-resistant pests to breed with resistant ones
to reduce overall resistance.

With organic Bt spray it is applied in years when the pests are a problem.
In the intervening time when Bt is not being applied having Bt resistant
genes is not an advantage, so the non-resistant ones increase and the next
application of Bt when needed will cut them well back again.


So what if intervening years have heavy pest predation too? You
continue with the up and down levels of pesticide?
The organic folk spray it all the time,


It is an important spray for them when significant pests are
present, it is not used all the time.


No, when the pests are doing damage. (IPM)
And the BT expressed is not causing resistance if no pests are
present.


The Bt gradually reduces strength as the plant ages. Pests are still
there. Organophosphate sprays have to be used to protect the cotton late
stage. So you have both pests and low strength Bt, ideal conditions for
resistance to be selected.

they haven't anything else.


Organic farming is going big commercial so some very good practices
such as companion planting


Doesn't work, sorry.


It may not produce totally unblemished crop, but where you can planting
pyrethrum will dsicourage some pests &c.

and using other plants to discourage
pests are not getting propoer attention.


What evidence have you got for this claim. Last I heard there was
nothing in it. Wishful thinking.


Don't tell them that it is GM


That is a bit of a worry.


Why? Its a very useful manufacturing technique.


Do we have GM yeasts in our bread?

Quite a few microbiological productive
processes are using GM bacteria. Note what happened with the
tryptophan produced by GM.


Nothing out of the ususal, except the factory took a short cut on
quality control, and let a toxic byproduct through and poisoned some
people with a well known poison.


We don't know that till the company releases its data.

I think such purifiaction as it was
getting has always been sufficient with the non-GM approach.


Are you claiming there has never been any similar failures of quality
control with bacterial production processes?


What maiming and deaths have been made public?

However in New Zealand the public were assured the moth spray does
not have GM.


What does that mean? Does protein "A", produced by naturally occurring
bacteria, and protein "A" produced by GM bacteria have any
differences?


I suppose it depends to some extent on purification.

It's no use claming something is 99% pure when it has a poison which has
effects at 0.01%.

I presume that is the Btk as well as the soy and corn
medium it grows in when sprayed.


What? Has NO connection with any GM process?