The commissioner shall cause detection and abundance surveys to be made for plant pests or other insects or noxious weeds of a highly injurious nature that may be present in the state to determine the necessity for establishing control practices. When the commissioner determines that a new and dangerous plant pest or other insect or noxious weed exists within the state or that an established pest or weed requires control and the nature of the pest or weed dictates immediate action, he shall proceed with a plan of eradication or suppression.