Sunday, 14 August 2011

BBC biased and inaccurate again.

Oh dear the BBC does it again. This is a long post and I am repeating much of what has been said before but it is necessary so that if the journalists themselves read it they will know where they went wrong. It seems that BBC local radio stations will put anything out as news if given a convincing enough press release.

This example isn't as bad as the really disgustingly biased piece from Radio Lancashire earlier in the week but it is still wrong.

This was on Radio Cornwall on Friday between 12 noon and 3pm and it contained factual inaccuracies and exaggerations.

Before I start on this it is important to be rational and look at the evidence. So let us assume we are working with a blank slate and that we know nothing of the current hysteria which is so dominant.

What do we really know about the horse and cattle deaths. Well we look at the EVIDENCE
There is a really detailed analysis here.

The claim is made that ragwort is a serious issue for horses and cattle and that specifically with horses it is killing thousands of them a year. This claim is behind all the stuff that we see and hear in the media. IT DOES NOT STAND UP TO INVESTIGATION.

Recently as I blogged the Advertising Standards Authority acted on this and several companies had to stop using these claims to sell their products. The ASA are not environmentalists. They just look at the facts. Unfortunately these false statements have had their effect and are still being repeated.

So why do so many people believe it? Perhaps the clue is in what was written by William James a famous philosopher who is regarded as the father of modern psychology
"There's nothing so absurd that if you repeat it often enough, people will believe it."

It has been said so many times that it becomes what people regard as common knowledge.

It doesn't make it true. Only evidence does. As I repeat here time and time again. There are many causes of liver damage. Far more cattle suffer liver damage and die from parasites than from ragwort. We have the statistics to show that! The statistics also appear to show that more horses are recorded dying from Equine Grass Sickness than ragwort poisoning. Grass Sickness is a peculiar malady where horses die and it rarely affects horses fed only hay.

One knowledgeable on-line commenter wrote this recently and it is basically true.

There are two ways for horses to die from ragwort. If their owners don't pay enough to get a large enough paddock with good grazing or if their owners buy cheap hay that hasn't been produced from fields free of ragwort.
There is a relevant point here from Ireland which has not been subject to campaigning with incorrect information. It was made On June 5th 2005 by the Irish Minister for Agriculture and Food

" "There are no official figures available in Ireland for deaths of horses due to ragwort poisoning. Unofficial estimates indicate that the level is very low and does not warrant any special attention or investigation."

Also there has been a survey running in the Netherlands that ensures that any horse that is suspected of dying of ragwort poisoning gets a proper post mortem to check that it isn't a commoner cause of liver damage. That particular survey has had no reported cases of horses dying of ragwort poisoning since 2007.

Now let's deal with that broadcast. It is difficult to comment on all of it. I could spend all day, but let's take a set of statements made near the beginning.
“One head can produce something like a quarter of a million spores.”

First of all this is a flowering plant and it produces seeds not spores and this quarter of a million spores is another example of the hysteria. These stories grow like the size of a fisherman's prized catch. This might be possible in highly extreme cases just like men can grow to nearly nine foot tall but it is certainly not a reasonable statement to make on air.

These are figures for real counts for typical ragwort plants at a number of sites in England which have been published in the scientific literature
4,760
5,900
11,690
13,370
47,600
63,700
117,740
120,400

So we can see that a quarter of a million is nowhere near typical and quite often it is just a few thousand.

Then this particular comment by the presenter continues.
And it can blow in the wind and it can go everywhere.

This is not what the EVIDENCE says. They studies show that the majority of ragwort seeds fall a the base of the plant and the rest are almost entirely deposited within a few metres and this is in accord with the published papers on the aerodynamics of seed spread.
A detailed analysis is available here.

So again people have been mislead

And then this set of comments is topped with these inaccurate statements.
It is illegal to grow it or allow it to be grown

This is most emphatically not true. It was changed towards the end of the programme and it even seems that Natural England didn't get it right.

Here is the law and what it says.
"(1) Where the minister of Agriculture fish and food (in this act referred to as ' the Minister') is satisfied that there are injurious weeds to which this act applies growing upon any land he may serve upon the occupier of the land a notice, to take such action as may be necessary to prevent the weeds from spreading.
(2)This act applies to the following injurious that is to say-
spear thistle
creeping or field thistle
broad leaved dock
ragwort"

It is a piece of legislation that provides for AN ORDER to be made. There is nothing that says that you automatically MUST eliminate this plant from land. They were simply wrong on that broadcast.
It is completely wrong for our national public broadcaster paid for out of the licence fee to broadcast incorrect information about the laws that govern us.


There are serious problems with that broadcast. It is very seriously misleading people.

You can listen to the relevant clips of the broadcast including a news item which completely failed to provide balance Talking about “the spread of ragwort” implying an increase when the EVIDENCE says that in may actually be decreasing.

The radio clips are on this link

You can comment on the BBC's official on-line form here,


As ever these sites provide accurate supporting information to what I say. Ragwort Facts and Ragwort, myths and facts. The latter site is produced by a horse owner who used to belong to a ragwort extermination group and believe all the stuff that I am debunking, until she asked the technical experts who became her site's co-authors for help and discovered it was all nonsense.


Ragwort Hysteria latest entries

Wednesday, 10 August 2011

BBC biased item now on web.


Yesterday I blogged an example of the BBC broadcasting biased and inaccurate information well today I discover that the same misleading material is on their website.

Away from the riots, there was news of a potential ragwort epidemic...it's a plant which is harmful to horses, livestock and dogs - so best treated with care

There is no epidemic. If anything the evidence shows ragwort to be declining.
It is not of any real risk to dogs either and the risks to horses and livestock are overplayed see yesterday's blog for details and clips of their dreadful broadcast. which was described by one twitter commentator as "twaddle".
BBC broadcasts biased items on ragwort
Ragwort Hysteria latest entries

Tuesday, 9 August 2011

BBC broadcasts biased items on ragwort

This morning on BBC Radio Lancashire's breakfast programme there was the most dreadful set of comments on ragwort. Amongst the most badly informed, biased and incorrect that I have ever come across. The presenter obviously badly misinformed by his guests carried on making similar comments during the programme.

It starts with an item in the car park with a representative from the NFU making very ill-informed comments. He talks nonsense about the seeds lasting 50 years in the ground. The resident "Environmental Expert" then makes a series of remarks about protective clothing and how dangerous it is to the touch and to people generally, that it accumulates in the liver and that it is even dangerous to dogs.
We learn in this clip that there is ragwort growing out of a wall in the BBC car park. The wall is in a dangerous state so it has been cordoned off.

Later in the programme the presenter says that it is the ragwort that has been cordoned off!

The dangerous to the touch thing isn't true.The chemicals in Ragwort have to undergo a number of decomposition steps in the body before they become
poisonous.They are poorly absorbed through the skin and the first
decomposition step to make them poisonous happens in the gut. So they
have to be eaten to be poisonous.

This web link leads to a short article co-authored by Dr Pieter Pelser
a New Zealand based Dutch scientist who is a leading world authority on
ragwort. He actually did his Phd on it. It gives you more details about
this myth and debunks it.

Animals have to eat the plant to be poisonous. Even if it were not true that the alkaloids could be absorbed in poisonous form through the skin they lethal doses are so high that they are usually measured as percentages of body weight. To scare people that it is dangerous to dogs is unacceptable.

Ragwort poisoning through skin absorption fact or fiction?

The seeds according to the research die off quite rapidly at first and small amounts survive longer. They certainly do not last fifty years. It appears that in most soils they are all gone after about sixteen years and in sandy soils a small number are still around at sixteen years.

You can listen to the extracted short clips from the programme here.

As ever scientifically researched material is available at the Ragwort Facts and the
Ragwort, Myths and facts sites.


The BBC complaints form is here
Ragwort Hysteria latest entries

Saturday, 6 August 2011

Ragwort no risk to humans

One of the commonest myths that circulates the internet is that ragwort poses a serious risk to human health. It does not.

This scare story is often used by the "horsteria" lobby to persuade people to control ragwort out of fear.

Yes ragwort is poisonous, but people don't eat it so it isn't a risk!

There is also the skin absorption myth that you can be poisoned by handling the plant.

Rather than write an extensive essay on the subject I will refer you to two articles on the internet.
Ragwort the science why it is no risk to people

and this
Ragwort poisoning through skin fact or fiction?


The first article quotes the second which is co-authored by a leading world authority on ragwort Dr Pieter Pelser whose Phd is specifically on ragwort.

Having looked carefully at the evidence, he concludes there is no evidence to support the skin absorption story.
Ragwort Hysteria latest entries

Wednesday, 3 August 2011

New good ragwort website

A new version of one of the best ragwort websites in the world is now available.

The Ragwort, myths and facts site is produced by leading Dutch expert, Esther Hegt.

A keen horse owner Esther originally belonged to a ragwort extermination group after ragwort hysteria spread there from the UK, but being highly intelligent and possessed of a keen analytical mind, she researched the subject contacting an impressive array of specialists around the globe. She discovered that the panic was unfounded.

Many of her web articles are co-authored with the specialist international scientists she recruited.

She set up her website in order to properly inform people. This is a new version of the English language copy of her site and is available at http://www.ragwort.org.uk
Ragwort Hysteria latest entries

Monday, 1 August 2011

Hilarious example from the Netherlands

I got this one passed to me this morning. It is really funny or rather it would be if it were not for the environmental damage being done as a result of the hysteria.
It comes from a Dutch language website. Ragwort hysteria started in the UK but many people have been reading the hysteria from and it has spread.
The website says:
Omdat het jakobskruiskruid zeer giftige stoffen bevat, zoals strychnine, heroïne, cocaïne en morfine, zullen zoogdieren er niet van eten

which translates as
Because the Ragwort contains highly toxic substances such as strychnine, heroin, cocaine and morphine, mammals will not eat it.

It never ceases to amaze me how often people will put stuff out without checking it . This is utter nonsense . None of these substances are found in ragwort.
Ragwort Hysteria latest entries