Monarch butterflies are in peril but won’t go on U.S. endangered list

The orange-and-black monarch butterfly, known for its 3,000-mile migration across North America and its plunging population, meets the criteria for listing as a threatened or endangered species, said the Interior Department on Tuesday. But it will be listed only as a candidate for federal  protection because "we must focus resources on our higher-priority listing actions," said Fish and Wildlife Service director Aurelia Skipwith.

Block dicamba until weedkiller is under control, says report

The herbicide dicamba is too risky to use on row crops such as soybeans and cotton until independent research shows it won't evaporate and harm nearby crops and plants, said a report from three conservation and environmental groups on Wednesday. Dicamba is blamed for "off-target" damage on millions of acres of property, and the EPA is considering possible rules for its use on crops in the future.

Nearing end of review, EPA finds no risk to human health from glyphosate

Glyphosate, the most widely used herbicide in the world, poses no threat to human health when used as directed and is unlikely to cause cancer, said the EPA in an interim decision on Thursday. Environmental groups denounced the decision as faulty.

Federal jury awards $80 million in Roundup trial

In a bellwether trial, a federal jury found Monsanto liable for causing blood cancer in a man who used its Roundup weedkiller, and awarded the man, Edwin Hardeman, more than $80 million in damages, said The Recorder.

Pigweed develops resistance to dicamba and 2,4-D

Researchers at Kansas State University have found pigweed that tolerates dicamba and 2,4-D, two herbicides that are often used to combat the invasive weed. Pigweed, or Palmer amaranth, is difficult for farmers to control, growing up to 10 feet tall and capable of producing 1 million seeds per plant.

Atrazine spikes in drinking water often go unseen, says report

Nearly 30 million Americans in 28 states “have some level of atrazine in their tap water,” says the Environmental Working Group in a report on the second-most widely used weedkiller in the country.

State regulators call for early cutoff date for dicamba use

Many states have reported significant complaints from farmers about dicamba damage to their crops and plants, said an association of state pesticide regulators in calling for the EPA to tighten its rules on use of the weedkiller.

Weed scientist: When will agriculture hit the reboot key?

“Off-target” herbicides are creating tremendous discord in farm country, writes weed scientist Ford Baldwin in an essay for Delta Farm Press, adding that “dicamba technology has been the most divisive of my career.”

North Dakota is fourth state to write tougher dicamba rules

State agriculture commissioner Doug Goehring announced “North Dakota-specific” rules on use of the weedkiller dicamba on GE soybeans in the new crop year. They include a ban on spraying when temperatures top 85 degrees and a total cutoff of dicamba use after June 30.