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Roundup Ready - Monsanto

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IMPACTS OF BT CORN<br />

EFFECTIVE BUILT-IN PROTECTION REDUCES<br />

INSECT DAMAGE AND CAN POSITIVELY AFFECT<br />

YIELDS AND GRAIN QUALITY<br />

In 2003, Bt maize occupied 9.1 million<br />

hectares (22.4 million acres) or 13 percent<br />

of the total global biotech crop area of<br />

67.7 million hectares (167.2 million acres). 29<br />

<strong>Monsanto</strong>’s YieldGard Corn Borer corn<br />

produces a protein derived from the naturally<br />

occurring soil microorganism, Bacillus<br />

thuringiensis (Bt) to provide effective built-in<br />

protection from major lepidopteran insect<br />

pests, including the European corn borer, the<br />

southwestern corn borer, and the pink borer.<br />

Maize pests cause extensive crop damage<br />

worldwide. Global losses due to insect pests<br />

are estimated at 52.6 million metric tons,<br />

which is equivalent to about 9 percent of the<br />

global production of 600 million metric tons.<br />

The estimated value of maize insect crop<br />

losses is $5.7 billion globally. 29<br />

YieldGard Corn Borer corn has provided<br />

superior control of these corn borer pests,<br />

which results in greater yields and<br />

improved economic returns for growers. 30<br />

Field studies evaluating corn yields in the<br />

United States, Argentina, Spain, Germany,<br />

South Africa, China, and the Philippines<br />

showed yield gains from 5 percent to<br />

40 percent. 29, 30 U.S. studies showed average<br />

yield gains of about 5 percent. For Argentina,<br />

the average yield gain was from 8 percent to<br />

10 percent in two studies.<br />

Studies conducted in Spain showed average<br />

yield gains of 5 percent to 11 percent in<br />

four studies. Two field trials in Germany<br />

indicated average yield gains of 12 percent<br />

and 15 percent. South African trials showed<br />

a 10 percent average yield gain. Finally,<br />

five other field studies in China demonstrated<br />

yield gains of 9 percent to 23 percent.<br />

One field study in the Philippines reported<br />

yield gains of 25 percent to 40 percent.<br />

Bt CORN GROWERS AROUND THE WORLD<br />

FIND YIELD BENEFITS.<br />

Yield impacts depend on regional conditions,<br />

levels of pest infestation, and other factors;<br />

but the field data show that corn growers<br />

usually achieve yield and production gains<br />

when they grow Bt corn.<br />

YieldGard Corn Borer corn can also<br />

improve grain quality by reducing levels<br />

of fumonisin mycotoxin in corn grain.<br />

By reducing the amount of insect damage<br />

to corn ears and grain, YieldGard Corn Borer<br />

corn can reduce the points of entry for<br />

Fusarium fungi that produce mycotoxins<br />

such as fumonisin.<br />

Global field trials conducted in multiple<br />

trial sites in Europe, Latin America, and the<br />

United States confirm lower fumonisin levels<br />

in YieldGard Corn Borer corn compared with<br />

the conventional corn control without the<br />

Bt gene. 31-33 Field analysis comparison trials<br />

conducted in the United States in 2001,<br />

demonstrated a 47 percent reduction in<br />

fumonisin levels with Yieldgard Corn Borer corn<br />

compared with conventional non-Bt corn. 34<br />

{ MONSANTO COMPANY 2004 PLEDGE REPORT: PAGES 30-31 }

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