• Southwest may face “megadrought” within century: Study

    Due to global warming, scientists say, the chances of the southwestern United States experiencing a decade-long drought is at least 50 percent, and the chances of a “megadrought” — one that lasts up to thirty-five years — ranges from 20 to 50 percent over the next century. While the 1930s Dust Bowl in the Midwest lasted four to eight years, depending upon location, a megadrought can last more than three decades, which could lead to mass population migration on a scale never before seen in this country.

  • Forensic technology detects drugs in milk, meat

    TV shows like “CSI” have made forensics a hot topic, spawning books and even science programs for kids. The same technology used at crime scenes to link a stray hair to a suspect can also find antibiotics or other medications in milk and meat. And the use of sophisticated testing is becoming increasingly available for livestock producers, who stand to lose lots of money if their products are tainted.

  • New methods of detecting Salmonella in pork meat processing

    Infections caused by foodborne microorganisms are an increasing public health burden. In a Ph.D. project at the National Food Institute, Technical University of Denmark, new methods of characterizing and detecting foodborne illness-causing Salmonella in pork meat processing and in bacteria in water, feed and food samples were studied.

  • Drought-driven use of underground water threatens water supply of western U.S.

    Scientists find that more than 75 percent of the water loss in the drought-stricken Colorado River Basin since late 2004 came from underground resources. The Colorado River is the only major river in the southwest part of the United States. Its basin supplies water to about forty million people in seven states, as well as irrigating roughly four million acres of farmland. Monthly measurements in the change in water mass from December 2004 to November 2013 revealed the basin lost nearly 53 million acre feet (65 cubic kilometers) of freshwater, almost double the volume of the nation’s largest reservoir, Nevada’s Lake Mead. More than three-quarters of the total — about 41 million acre feet (50 cubic kilometers) — was from groundwater. The extent of groundwater loss may pose a greater threat to the water supply of the western United States than previously thought.

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  • How existing cropland could feed billions more

    Feeding a growing human population without increasing stresses on Earth’s strained land and water resources may seem like an impossible challenge. According to a new report, focusing efforts to improve food systems on a few specific regions, crops, and actions could make it possible both to meet the basic needs of three billion more people and decrease agriculture’s environmental footprint. The report focuses on seventeen key crops that produce 86 percent of the world’s crop calories and account for most irrigation and fertilizer consumption on a global scale.

  • Foreign investment in agriculture increases productivity of subsistence farming

    The improved infrastructure brought about by foreign investment could increase the productivity of subsistence farmlands in countries such as Indonesia and Papua New Guinea and could mean these lands can feed at least 300 million people around the world. This is compared to about 190 million people that could be fed if the land was left tended to by the local population. The most targeted countries for land grabs are Indonesia, Malaysia, Papua New Guinea, and the former Sudan. Altogether, these nations account for around 82 percent of the total food calories that can be produced by acquired croplands worldwide.

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  • Reducing use of nitrogen-based fertilizers helps combat climate change

    Nitrogen-based fertilizers spur greenhouse gas emissions by stimulating microbes in the soil to produce more nitrous oxide. Nitrous oxide is the third most important greenhouse gas, behind only carbon dioxide and methane, and also destroys stratospheric ozone. Agriculture accounts for around 80 percent of human-caused nitrous oxide emissions worldwide, which have increased substantially in recent years, primarily due to increased nitrogen fertilizer use. Scientists help farmers around the globe apply more-precise amounts of nitrogen-based fertilizer to help combat climate change.

  • Drones offer farmers eyes in the sky to check on crop progress

    Commercial use of unmanned aerial vehicles in U.S. airspace was banned by the Federal Aviation Administration in 2007, although growing numbers of hobbyists have been toying with the use of drones, particularly for aerial photography. Facing mounting pressure from agribusiness, retail, and other industries, however, the FAA is expected to release new policies by 2015 that will enable businesses to integrate drones into their operations. The agriculture industry is expected to be one of the largest market segments for drone usage. This growing season, crop researchers at the University of Illinois are experimenting with the use of drones on the university’s South Farms. A crop sciences educator is using two drones to take aerial pictures of crops growing in research plots on the farms.

  • Dramatic drop in Central Valley wintertime fog threatens California’s agricultural industry

    California’s winter tule fog — hated by drivers, but needed by fruit and nut trees — has declined dramatically over the past three decades, raising a red flag for the state’s multibillion dollar agricultural industry, according to researchers at UC Berkeley. Many crops go through a necessary winter dormant period brought on and maintained by colder temperatures. Tule fog, a thick ground fog that descends upon the state’s Central Valley between late fall and early spring, helps contribute to this winter chill. The findings have implications for the entire country since many of these California crops account for 95 percent of U.S. production.

  • Large areas of Plains states now drier than during Dust Bowl

    As a result of the drought conditions that have largely remained a constant since 2011, parts of the Texas and Oklahoma panhandles, as well as northeastern New Mexico and southeaster Colorado, are now drier than they were during the infamous Dust Bowl of the 1930s. While experts explain that the possibility of another Dust Bowl is not likely due to modern farming and irrigation techniques which have been enacted as a response in the 1930s, greater erosion due to drought and wind has resulted in a number of vicious dust storms.

  • Farmers try to cope with the challenges posed by extreme weather

    Across the country, farmers are reporting that they are at yet another critical juncture for agriculture. Citing more unpredictable and severe weather due to climate change, scientists are researching defensive measures and looking to previous agricultural challenges for inspiration. Some are looking to the way individual farmers and government agencies addressed the Dust Bowl hardships of America during the Great Depression as a source of inspiration.

  • California bill banning use of antibiotics in livestock withdrawn

    The Centers for Disease Control and Preventionreports that 23,000 people die every year from infections that cannot be cured, often due to overuse of antibiotics which creates drug resistant bugs. Last Wednesday, California Assemblyman Kevin Mullin (D-San Mateo) withdrew proposed legislation which would ban the sale of meat and poultry fed on nontherapeutic antibiotics. He lacked sufficient support from fellow legislators.

  • U.S. corn yields increasingly vulnerable to hot, dry weather

    The United States produces 40 percent of the world’s corn, mostly in Iowa, Illinois, and Indiana. As more than 80 percent of U.S. agricultural land relies on natural rainfall rather than irrigation, corn farmers in these regions depend on precipitation, air temperature, and humidity for optimal plant growth. U.S. corn yields are growing more sensitive to heat and drought. Farmers are faced with difficult tradeoffs in adapting to a changing climate in which unfavorable weather will become more common.

  • New bug sensor saves crops, people

    For hundreds of years humans have attempted to kill unwanted insects. While some blanket methods have been successful, they can be costly and create environmental problems. A new sensor developed by UC Riverside researchers aims to change that by counting and classifying the insects so that the substance used to eradicate the harmful insects can be applied on a precision targeted level. The inexpensive wireless sensors have 99 percent accuracy, and they are expected to have applications fighting insect-borne diseases, such as malaria, and insects that damage crops.

  • Vermont mandates labeling of foods containing GMOs

    On Wednesday, legislators in Vermont passed a billrequiring the labeling of foods which contain genetically modified organisms (GMOs), making the state the first in the United States to pass such a law without contingencies. Proponents of the law, and of similar attempts across the country, hailed the legislative approval as a victory. About twenty other states have pending measures regarding labeling GMO-based foods, but the biotech and food industries have been lobbyingfederal legislators to prevent such measures.