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.
Spartacus Educational. Farm Tools. Moulboard Plough: A plough that produced a deep furrow and turned the earth after it had been cut by the coulter and share. The moulboard was the device for guiding the plough and turning the earth over. To get the right depth for the seed the plough has to both cut and turn the earth.
A self-propelled combine; a self-propelled forage harvester; self-propelled fertilizer or pesticide application equipment but not including manure application equipment; towed or attached tillage, planting, harvesting, and cultivation equipments and its towing farm tractor or other power unit or farm tractor or other power unit to which it is ...