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Bumble bees benefit from some neonicotinoids.


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People being shot at run faster on average than people that aren't. This makes them fitter  and by definition healthier at least until they get hit.

Will try to find some time to read the actual paper but this quote from the article doesn't inspire confidence:   "The study also showed that the bumblebee colonies close to the thiacloprid-

Seed coatings include many products that are not insecticides or fungicides - the main pesticides used. Most common are fertiliser coatings, but some seeds are coated in lubricants to ensure even

Will try to find some time to read the actual paper but this quote from the article doesn't inspire confidence:

 

"The study also showed that the bumblebee colonies close to the thiacloprid-treated red clover fields grew larger in comparison with bumblebee colonies in landscapes without red clover fields."

 

I fail to see how a landscape without a red clover field is a valid control for a landscape with a thiacloprid-treated red clover field!

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Bumblebees have only few worker brood cycles, after which the colony (queen) switches to produce queens and drones. No workers will then be added. As with honeybees, build up is dependent on availability of pollen and nectar. If pollen in particular is scarce, the few brood cycles to produce workers will not produce too many workers. Red clover is a real attractive source of pollen and nectar for bumblebees.

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Just saw this thread. This study may not apply to NZ.

 

In NZ you cannot use a neonic seed treatment on clover. No treatment is registered.

But farmers can sow grass seed treated with neonic chemicals, and mix this with untreated clover seed to establish a mixed ryegrass/clover crop.

All the info I have seen suggests that the neonic will be absorbed through the soil into the clover.

 

Thiacloprid is not registered as a seed treatment in NZ only as a foliar spray on kiwifruit, pip fruit, stone fruit, onions and potatoes.

No application on clover is authorised.

 

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2 hours ago, Don Mac said:

In NZ you cannot use a neonic seed treatment on clover. No treatment is registered.

But farmers can sow grass seed treated with neonic chemicals, and mix this with untreated clover seed to establish a mixed ryegrass/clover crop.

Are you saying that the bush burn , rye clover seed mix , that I throw around has neonic treated seed .

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1 hour ago, kaihoka said:

Some grass seeds are aqua blue

Aqua blue, pretty pink, lemon yellow. The colours vary depending on who coated them . Bush burn or rye/ clover mix is basically sweepings and left over seed that is collected , mixed up and sold. 

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Seed coatings include many products that are not insecticides or fungicides - the main pesticides used.

Most common are fertiliser coatings, but some seeds are coated in lubricants to ensure even sowing.

Colours are often added to seed coatings to deter birds from eating the seeds and make the seed attractive to buyers - YES.

Here is a sale brochure from a NZ seed coater. You will note there is no mention of any pesticide.

http://www.seedinnovations.co.nz/assets/PRODUCTS/FILM COAT LIQUIDS WEB.pdf

 

One discussion item I missed above about this research which sort of destroys this paper.

Red clover is not honey bees favourite plant, they prefer white clover. Bumble bees feed of red clover much more efficiently.

And we discussed this on a prior thread -

 

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