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.
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.