Possible Clues:

• One prov. used to encourage
• 23 - 0.2g picked up
• Root about a right load of rubbish
• That may be the root of the trouble with your old motor
• Rabbit's treat
• Is that the root of the trouble with your automobile?
• You'd be an ass to long to get to the root of this
• Incentive for a bishop to get into bed
• Red vegetable used as inducement
• What might stop your motor running might make your donkey run