A vehicle mounted sprayer has a plurality of spray booms equipped with downwardly facing spray nozzles. A control console includes a rounded palm rest with the most often used operational spray controls placed directly ahead of the palm rest for easy actuation by the operator as the operator rests the palm of one hand on the palm rest. A pivotal hose reel for manual spraying has pivotal motion about a vertical axis into one of a plurality of adjusted positions relative to the sprayer to ease unwinding and rewinding of the hose from the hose reel. A hill assist system holds the sprayer on a hill for a predetermined time to give the operator enough time to place the sprayer into forward motion up the hill from a standing stop. The spray through the booms can be selectively added to flow in a tank agitation system to boost agitation effectiveness.