Why doesn't roundup work on dandelions?? (crabgrass, weeds, spring, leaves)

[sootystadt]

Anyone planning to use Round Up should consider the recent World Health Organization study released just last month (March 2015):

(Reuters) - The world's most widely-used weed killer can "probably" cause cancer, the World Health Organization said on Friday.

The WHO's cancer arm, the International Agency for Research on Cancer (IARC), said glyphosate, the active ingredient in the Monsanto Co herbicide Roundup, was "classified as probably carcinogenic to humans".

It also said there was "limited evidence" that glyphosate was carcinogenic in humans for non-Hodgkin lymphoma.

Monsanto, the world's largest seed company, said scientific data do not support the conclusions and called on the WHO to hold an urgent meeting to explain the findings.

[note: Monsanto has twice been sued successfully by the State of New York for maintaining its product was "safe."]

From Scientific American, 2009
Last month, an environmental group petitioned Argentina’s Supreme Court, seeking a temporary ban on glyphosate use after an Argentine scientist and local activists reported a high incidence of birth defects and cancers in people living near crop-spraying areas. Scientists there also linked genetic malformations in amphibians to glysophate. In addition, last year in Sweden, a scientific team found that exposure is a risk factor for people developing non-Hodgkin lymphoma.
---

Also, a senior researcher at MIT, Stephanie Seneff, has found that glyphosate damages human (and other mammals') gut bacteria--a major factor in immunity and brain health. Livestock fed grain grown with Round Up (as much of it is in the US) showed porous intestinal tracts after slaughter--their guts simply broke apart.

Chances are, if you have lots of dandelions in your soil, you have a nutrient deficiency. Dandelions are dynamic accumulators--their deep tap roots reach into the soil to bring up nutrients, ease compaction, etc. Your soil is trying to heal itself--don't damage it further by killing the beneficial microorganisms with glyphosate.

[VJDAY81445]

Originally Posted by sootystadt

Anyone planning to use Round Up should consider the recent World Health Organization study released just last month (March 2015):

(Reuters) - The world's most widely-used weed killer can "probably" cause cancer, the World Health Organization said on Friday.

The WHO's cancer arm, the International Agency for Research on Cancer (IARC), said glyphosate, the active ingredient in the Monsanto Co herbicide Roundup, was "classified as probably carcinogenic to humans".

It also said there was "limited evidence" that glyphosate was carcinogenic in humans for non-Hodgkin lymphoma.

Monsanto, the world's largest seed company, said scientific data do not support the conclusions and called on the WHO to hold an urgent meeting to explain the findings.

[note: Monsanto has twice been sued successfully by the State of New York for maintaining its product was "safe."]

From Scientific American, 2009
Last month, an environmental group petitioned Argentina’s Supreme Court, seeking a temporary ban on glyphosate use after an Argentine scientist and local activists reported a high incidence of birth defects and cancers in people living near crop-spraying areas. Scientists there also linked genetic malformations in amphibians to glysophate. In addition, last year in Sweden, a scientific team found that exposure is a risk factor for people developing non-Hodgkin lymphoma.
---

Also, a senior researcher at MIT, Stephanie Seneff, has found that glyphosate damages human (and other mammals') gut bacteria--a major factor in immunity and brain health. Livestock fed grain grown with Round Up (as much of it is in the US) showed porous intestinal tracts after slaughter--their guts simply broke apart.

Chances are, if you have lots of dandelions in your soil, you have a nutrient deficiency. Dandelions are dynamic accumulators--their deep tap roots reach into the soil to bring up nutrients, ease compaction, etc. Your soil is trying to heal itself--don't damage it further by killing the beneficial microorganisms with glyphosate.

another " scientific research" that has to use the words..........."can probably"......in their conclusion.

[VJDAY81445]

......."you have a nutrient deficiency ""..
,,,,,,"Your soil is trying to heal itself "

I laughed so hard I spilled my coffee!

As a retired farmer I can assure you dandelions will show up in pastures and hay fields where soil tests reveal no nutrient deficiency.

They usually show up where the grass is thinner or the alfalfa field is thinner.
None of these conditions ( thinning) have anything to do with a " nutrient deficiency" but more to do with the fact the grass or alfalfa is no longer thick enough so other weed species fill in.

Yes, dandelion is a "weed" as the definition of a weed is anything growing where it is not wanted.

Corn is a weed when it grows in a field of soybeans,also.

[Pitt Chick]

Originally Posted by VJDAY81445

another " scientific research" that has to use the words..........."can probably"......in their conclusion.

Yeah.

Knives and cars "can probably" kill you... better avoid those too!

[thedwightguy]

Sigh. Underlying issues point to thistle and dandelion problems, not the other way around. "Pastures" in my day responded to mixed livestock (horses love thistles as they bud; lots of Vitamin B, but the cattle left it alone until dry) . If you're using Roundup and/or 24D (which has been banned in Canada for decades_) anywhere near your "organic" pasture, you're no longer organic on any level of the imagination.\\If you use of the word "pasture" indicates that livestock are on it, it explains the weeds unless you're cutting hay only off the land.

Both these invasives along with brambles have tap roots, so they have lots of ability to bounce back. There's nothing wrong with a few spices in the middle of all that grass and clover. Go no till and analyse whether application of lime or ammonia would get the grass a jump on the problem, or do a soil test to know what you're dealing with balance wise.

[Larry Caldwell]

Auxin based broadleaf herbicides (2-4,D) are no more toxic than glyphosate. Animals have no metabolic pathways that will incorporate auxins, so as long as you dilute them properly they are safe to use. Do not allow runoff to reach waterways, including storm drains, or you will poison water plants.

[VJDAY81445]

Originally Posted by thedwightguy

Sigh. Underlying issues point to thistle and dandelion problems, not the other way around. "Pastures" in my day responded to mixed livestock (horses love thistles as they bud; lots of Vitamin B, but the cattle left it alone until dry) . If you're using Roundup and/or 24D (which has been banned in Canada for decades_) anywhere near your "organic" pasture, you're no longer organic on any level of the imagination.\\If you use of the word "pasture" indicates that livestock are on it, it explains the weeds unless you're cutting hay only off the land.

Both these invasives along with brambles have tap roots, so they have lots of ability to bounce back. There's nothing wrong with a few spices in the middle of all that grass and clover. Go no till and analyse whether application of lime or ammonia would get the grass a jump on the problem, or do a soil test to know what you're dealing with balance wise.

" sigh"

" 24D( which has been banned in Canada for decades"

Really ?

I knew that was FALSE as a lot of small grain ( wheat, barley,) is grown in Canada.

I just did a quick internet search and it appears a herbicide named..............Salvo 2,4-D Ester 700...is a widely used herbicide in Canada for everything from crops to pastureland.

..........sigh....

[Bulldogdad]

The stuff I use kills them within 24 hours.

Roundup QuickPRO

[Paka]

[quote=jacqueg;39218755]Did you ever consider letting the dandys be? They are a great early-spring food source for bumblebees.

I wish YOU were on my HOA inspection yard team....LOL

[Deadbolts' Probie]

One summer about 10 years ago we had 4 geese. They loved dandelions!!! Our lawn was infested. They ate the whole plant. Haven't had a problem since. I would get a goose. Can't get more organic than that.