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Farmers falling back on chemical pesticides as GMO seeds falter

Published time: July 10, 2013 03:29
Edited time: September 20, 2013 06:10
Reuters / John Sommers II

Reuters / John Sommers II

Biotech companies like Monsanto have spent millions creating and inserting genes that would make corn plants poisonous to the corn rootworm but harmless to other creatures, but now the pest has begun to develop an immunity.

While the use of chemical pesticides has always been a source of contention, the advent of corn hybrid plants by biotech companies like Monsanto allowed farmers to cut back on their use. These new hybrids had been specifically designed using genes from a bacteria called Bacillus thuringiensis (Bt), which provided a formidable defense against corn rootworm.

Throughout parts of the midwest, however, farmers are now discovering rootworms that are immune to the genetically modified corn. In parts of Illinois, Minnesota and Nebraska, where rootworm has made a comeback, farmers have now returned to using chemical pesticides.

According to Dan Steiner, an independent crop consultant in northeastern Nebraska, the return of the soil insecticides brings back bad memories.

"We used to get sick [from the chemicals]," Steiner tells NPR.

"Because we'd always dig to see how the corn's coming along. We didn't wear the gloves and everything, and we'd kind of puke in the middle of the day. Well, I think we were low-dosing poison on ourselves!"

According to the US Department of Agriculture,  two thirds of all corn grown in the US is of a hybrid variety, carrying the Bt gene that targets the rootworm. The first hybrids were introduced in 2003 and, as their proliferation now shows, proved to be very popular.

Though traditional pesticides may help in evening out the odds, there are other alternatives to combat rootworm despite its adaptation to the corn hybrid. Steiner, for one, has advocated “starving” the rootworm by depriving it of its food source, and advising farmers to rotate their crops from corn. 

Reuters / John Sommers II

Crop rotation, however, is not likely to prove popular among farmers who take advantage of some $5 billion in government subsidies per year, doled out regardless of crop prices or yields.

Corn is by far the largest recipient of yearly crop subsidies in the US, a policy which has been sustained in part due to corn ethanol production, which critics say is not a viable energy policy, and which has kept the price of corn so low that manufacturers of processed foods in the US habitually replace sugar with high fructose corn syrup.

According to University of Nebraska entomologist Lance Meinke, the increasing use of chemical pesticides may well be nailed down to the current politics of growing corn, particularly in the face of alternatives such as crop rotation.

"I think economics are driving everything," Meinke tells NPR.

"Corn prices have been so high the last three years, everybody is trying to protect every kernel. People are just really going for it right now, to be as profitable as they can," he adds.

In the meantime, companies such as Syngenta and AMVAC Chemical, which produce soil insecticides for corn, have reported increases in sales of 50 to 100 per cent over the past two years.

The situation now developing with the resurgence of the corn rootworm is not unlike that being experienced by American farmers who have relied on Monsanto GMO seeds resistant to the company’s own Roundup Ready herbicide.

Some fifteen years following the introduction of the herbicide-resistant GMO seed, most of the corn, soybean and cotton cultivated in the US is now of the Roundup Ready variety.

Some 15 years later, most of the corn, soybeans and cotton cultivated in the US stems from these Roundup Ready seeds. While the genetically modified crops were meant to be resistant to application of the weed-killing Roundup herbicide, farmers are now increasingly having to deal with Roundup-resistant "superweeds."

It is now estimated that in the period from 1996, when the GMO crops were introduced, to 2011, an additional 404 million pounds of chemical pesticides were applied to US fields, amounting to a 7 per cent increase overall.

Comments (67)

 

Obbop 12.02.2014 14:13

The power of monolithic corporations to influence government at all levels, often harmful to the masses of We, the People, is directly relaated to the high-paying jobs available to well-behaved politician and bureaucrat lackeys when they leave their office or position.

& quot;Vote the bums out" merely rewards politicians by sending them to that job that pays far more than what the common folks receive.

Anonymous user 11.07.2013 20:03

Growing corn isn't about human consumption, it's about ethanol and corn syrup!

Anonymous user 11.07.2013 18:32

I don't understand why corn is so widely grown. Wheat and rye tastes much better.

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