Eric Walker added How Superweeds Like Palmer Amaranth Are Changing Agriculture - The New York Times to a number of topics

Eric Walker added How Superweeds Like Palmer Amaranth Are Changing Agriculture - The New York Times to Paraquat, and added Paraquat to Herbicides and pesticides

Eric Walker added a number of topics and America is using fewer pesticides now than in the '90s. But they’re more deadly. - The Academic Times to Herbicides and pesticides, and added Herbicides and pesticides to Agriculture and farming, Biology and Atoms, molecules, chemicals, minerals, materials and compounds