The Plant Protection Department has been established since the College opened its doors in 1965. It has played, and still does, an important role as far as the academic and research work are concerned. It has also extended many services, through faculty members, to the agricultural entities, both governmental and private. Technical advises; including the identification of insect pests and disease infestations, and suggesting the most effective management methods to these problems; are offered to growers.

The department is divided into three main sections: Entomology, Phytopathology and Pesticides. Highly qualified faculty members are responsible for teaching and research. They are assisted by number of lecturers, instructors and technicians. All of them, together with graduate and B.Sc. students, constitute a viable dynamic community, working as a family, in complete harmony and co-operation.

The graduate studies have been undertaken in the department since 1980. Graduate courses and research studies for obtaining the M.Sc. degree in one of the following specialization: Entomology, Phytopathology or Pesticides are offered by the department. A number of Saudi and international students have already completed their theses and got their degrees. Also, PhD degree in one of the following specialization: Entomology, Phytopathology or Pesticides will be offered soon.