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.
Secondary Tillage Implements. Different types of implements like cultivators, harrows, planks and rollers are used for secondary tillage. Tractor Drawn Cultivator: Cultivator is an implement used for finer operations like breaking clods and working the soil to a fine tilth in the preparation of seedbed.ifferent types of implements like cultivators, harrows, planks and rollers are used for secondary tillage. Tractor Drawn Cultivator: Cultivator is an implement used for finer operations like breaking clods and working the soil to a fine tilth in the preparation of seedbed.