1. pathogen-any disease-producing agent (especially a virus or bacterium or other microorganism). microorganism, micro-organism-any organism of microscopic size.infectious agent, infective agent-an agent capable of producing infection. Translations.. pathogen-any disease-producing agent (especially a virus or bacterium or other microorganism). microorganism, micro-organism-any organism of microscopic size.
Agricultural Tools. The Agricultural Tools ClipArt gallery offers 195 illustrations of hand tools such as plows, pitchforks, insecticide sprayers, rakes, and rollers.
What is a Disc Harrow from Tractor Agriculture. Harrows. A Harrow is ground leveling implement and is used to break the clod, process the soil to destroy the weeds finally. There are different types of Harrows and let us start with Disc Harrow.