But they also found something else. They say another kind of bug is now attacking the cotton and other crops.
VOA: special.2010.05.25
The researchers note that farmers in the Midwest used too much fertilizer on their crops through the nineteen seventies.
VOA: special.2009.07.28
For example,she noted that crops designed to resist damage by glyphosate need fewer pesticides that are more toxic to the soil.
VOA: special.2010.04.27
Experts say the new methods also increase crop production up to five times more than crops that depend on rainfall only.
VOA: special.2010.02.08
Farmers rarely planted trees or tall crops around the buildings, so there would be no barrier to the airflow.
VOA: special.2009.09.08
The researchers point out that gene flow between crops and their wild relatives is common and difficult to contain.
VOA: special.2009.10.27
Agriculture Minister Christopher Toe urged other countries to help save Liberia's crops and other vegetation that the caterpillars feed on.
VOA: special.2009.01.27
If you plant some seeds every week or two, you will have crops ready to eat one after another.
VOA: special.2009.04.28
The Asian Disaster Preparedness Center says traditional crops like these can survive the fierce storms that often strike the islands.
VOA: special.2010.02.09
Officials in Liberia say tens of millions of caterpillars are destroying crops and polluting waterways in the country's agricultural centers.
VOA: special.2009.01.27
Recently we told you about a study of genetically engineered crops and how they have affected farming in the United States.
VOA: special.2010.05.18
Scientists are using biotechnology as well as traditional breeding methods to develop water-saving crops to feed a growing world.
VOA: special.2009.03.23
Based on their research, the experts suggest that farmers plant a variety of crops and not just depend on rice.
VOA: special.2010.03.30
Over the next twenty years, Borlaug worked with Mexican scientists to develop crops that were able to resist disease.
VOA: special.2009.11.10
Roots of Peace supports the planting of native crops and the employment of landmine victims to farm the cleared land.
VOA: special.2010.05.03
In many countries, women are half as likely as men to use fertilizers to increase the amount of crops.
VOA: special.2011.03.22
It found that many farmers have better harvests, better weed control and fewer losses from insect damage compared to traditional crops.
VOA: special.2010.04.27
Tilling can remove weeds and the waste from last season's crops and help break down old plant material into fertilizer.
VOA: special.2010.09.28
Now there is worry about a new threat headed in their direction in the wind a fungus that destroys wheat crops.
VOA: special.2009.08.18
The Chavez family joined thousands of other farm workers who traveled around the state of California to harvest crops for farm owners.
VOA: special.2009.09.06
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