Operation of various tractors and farm equipment to prepare and maintain land, plant, irrigate, fertilize, spray, cultivate, harvest and transport crop to storage. Operate or tend equipment used in agricultural production, such as tractors, combines, and irrigation equipment. Adjust, repair, and service farm machinery and notify supervisors when machinery malfunctions. Attach farm implements such as plows, discs, sprayers, or harvesters to tractors, using bolts and hand tools. Operate towed machines such as seed drills or manure spreaders to plant, fertilize, dust, and spray crops. Drive trucks to haul crops, supplies, tools, or farm workers. Irrigate soil, using portable pipes or ditch systems, and maintain ditches or pipes and pumps.