An employee in landscape management should be trained on which of the following safety practices?

Training in mower safety is crucial for employees in landscape management because it directly pertains to their day-to-day tasks, ensuring both personal safety and the safety of those around them. Landscaping often involves the operation of various equipment, including mowers, which can present significant hazards if not handled correctly.

Understanding how to operate a mower safely includes knowledge of proper maintenance, awareness of surroundings, and appropriate techniques to prevent accidents. This training can mitigate the risks of injuries associated with equipment use, such as cuts or collisions, and can help create a safer work environment overall.

The other options, while important in their own right, do not focus on immediate safety practices relevant to the physical work environment. Marketing strategies, client negotiations, and accounting practices are essential for the overall business operations but do not pertain to the operational safety necessary for someone actively working in landscape management.