BLAINE, Wash.—The first Asian giant hornet nest of the year has been found in Washington state, and plans are being developed to eradicate it, likely next week, the state’s agriculture department said on Thursday. The so-called stinging “murder hornets,” the world’s largest hornets, can grow to two inches in length and prey on native bee and wasp populations, consuming honeybee hives and threatening agriculture. “Any time you get any organism that is not native to an area move in, the consequences are really immeasurable,” said Sven Spichiger, the department’s managing entomologist. A day before the nest was located, Washington and Oregon state Department of Agriculture employees gathered in an open-air classroom just south of the Canadian border to learn how to trap, track, and eradicate the invasive species. The employees donned protective suits, complete with black boots and blue gloves, and practiced using telemetry systems to find the hornets, tag …