Rise of the Superweeds

[one...two...tree 2,762]

Profligate use of Roundup, once billed as a miracle herbicide, has generated a large and growing wave of weeds that are impervious to it.

by Mara Grunbaum


The age-old war between farmers and weeds is escalating. Crop-
strangling plants are rapidly becoming immune to the most widely used agricultural herbicide, glyphosate, commonly known as Roundup. An estimated 10 million of the 178 million acres of U.S. farmland growing corn, cotton, and soybeans are now infested with weeds that are invulnerable to the chemical. Herbicide resistance could cost nearly $1 billion per year—and may force farmers to reexamine older practices that modern chemicals were supposed to replace.

In the 1990s, when agrotech giant Monsanto introduced genetically modified crops that can withstand glyphosate, many farmers turned to Roundup as their sole herbicide. Initially, that made farming simpler and more efficient. But reliance on a single substance naturally breeds resistance, since the few weeds that survive pass their hardiness to the next generation. “The population quickly shifts from one that is sensitive to the herbicide to one that is largely resistant,” says Micheal Owen, a weed scientist at Iowa State University. At least 12 U.S. weed species no longer respond to glyphosate, and since some seeds are windborne, resistance moves easily from one farm to another. Monsanto and other agricultural chemical companies plan to introduce crops that can withstand other herbicides, which could encourage farmers to add more variety to their treatment regimens.

Working with scientists from five other states, Owen is comparing different weed-control practices on about 150 fields throughout the South and Midwest. Preliminary results from the five-year study (funded by Monsanto) suggest that new strategies, such as combining multiple chemicals and applying herbicides both before and after weeds emerge, can improve crop yields compared with the typical glyphosate-heavy approach, while slowing the emergence of resistance. A larger chemical arsenal alone will not solve the problem, but in combination with traditional weed management, such as tilling and crop rotation, it should make it harder for unwanted plants to evolve resistance.

Although many farmers have not yet been affected, Owen stresses the importance of preventive action. “In fields that don’t yet have problems, now is the time to make changes,” 
he says.

http://discovermagazine.com/2011/mar/10-rise-of-the-superweeds

[Mr. Big Dog 10,747]

Mother nature is a b!tch. Can't cheat her.

[scandal 951]

I use Roundup with great enthusiasm to knock out my dandelions. I spray and spray and spray, and watch the runoff go down my sewer drain.

[Ban Hammer 13,398]

I use Roundup with great enthusiasm to knock out my dandelions. I spray and spray and spray, and watch the runoff go down my sewer drain.

maybe you'd like to join aj and i for our annual tire burning just upwind of steven's house?

[scandal 951]

maybe you'd like to join aj and i for our annual tire burning just upwind of steven's house?

If we get to discharge firearms with live ammo in the vicinity of actual tree huggers, I'm there

[Ban Hammer 13,398]

If we get to discharge firearms with live ammo in the vicinity of actual tree huggers, I'm there

or even worse, we replace all the trees with plastic ones.

[Dakine10 5,452]

Monsanto and other agricultural chemical companies plan to introduce crops that can withstand other herbicides, which could encourage farmers to add more variety to their treatment regimens.

This is going to end up like the little old lady who swallowed the fly.

[sjr09 155]

Monsanto plans to introduce crops that can withstand other herbicides, which could encourage farmers to add more variety to their treatment regimens.

Monsanto has these crops, I drive by one of the test facilities daily.

[SuperDuper! 230]

Don't like to spray RoundUp or other chemicals. Like to stay Carcinogen Free. Good luck to those that Spray toxins into their immediate environment.

[Dakine10 5,452]

Monsanto makes the poisons, engineers the plants that can survive those poisons, and eventually creates the weeds that are resistant to those poisons. They are fond of slogans such as "improving lives" and "brighter future". Who could have forseen such benevolance from the corporation that gave us agent orange?

[one...two...tree 2,762]

Monsanto makes the poisons, engineers the plants that can survive those poisons, and eventually creates the weeds that are resistant to those poisons. They are fond of slogans such as "improving lives" and "brighter future". Who could have forseen such benevolance from the corporation that gave us agent orange?

[scandal 951]

We were in Canada last week, and stayed with my friend who lives in Brampton. He told me that Roundup has been banned in Ontario. Sure enough,it has been! Glad I live in America where the guvmint doesn't interfere with my god given right to create mutant fish in Lake Michigan.

[Ban Hammer 13,398]

We were in Canada last week, and stayed with my friend who lives in Brampton. He told me that Roundup has been banned in Ontario. Sure enough,it has been! Glad I live in America where the guvmint doesn't interfere with my god given right to create mutant fish in Lake Michigan.

where's my timbits!