The first use of agricultural engineering was the introduction of irrigation in large scale agriculture. The practice would not expand until the industrial revolution.
With the rise of tractors and machines in the industrial revolution, a new age in Agricultural Engineering began. Over the course of the industrial revolution, mechanical harvesters and planters would replace field hands in most of the food and cash crop industries. In the 20th century, with the rise in reliable engines in airplanes, cropdusters were implemented to disperse pesticides. The introduction of these engineering concepts into the field of agriculture allowed for an enormous boost in the productivity of crops, dubbed a "second agricultural revolution".
In the late 20th century, Genetically Modified Foods (GMOs) were created, giving another large boost to crop yields and resistance to pests