The application of plant extracts against plant pathogens

The use of chemicals is one of the most effective, fastest and accessible ways to control plant diseases. Due to their environmental pollution, harmful to humans, and the occurrence of pathogens resistance, the researchers look for alternative ways to control plant diseases. Currently, the use of plant extracts is as one of the modern methods to control plant pathogenic pathogens. Because plant extracts have natural origin, they could not cause environmental pollution. Moreover, these compounds have great potential to use in plant disease management. Plantextracts have been used against different pathogenic agents such as fungi, bacteria and nematodes, and the results of their applications have been successful. This review summarizes the previous studies that have used plantextracts as biological agents to control plant pathogenic pathogens and their biocontrol efficacy