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.
In order to solve the problem of drudgery and other problems associated with food production in Nigeria, various measures has been introduced to combat these problems through mechanization. (1) Tractor: Farm Tractor is a self propelled machine or equipment that pulls or pushes tools or implements over the land.