Explanation:

• Ratoon cropping is an old system that has been practiced for many years, especially in the Tropics.
• Although the origin of ratooning is probably not known for any particular crop, it may have begun when man first noticed the regrowth of new shoots following the cutting of certain crops at harvest, thus, producing a new crop without replanting.
• Because ratooning is practiced widely and is important in many crops, a review of the practice may be valuable, especially because increased food and fiber production is imperative in tropical areas.
• This practice is widely used in the cultivation of crops such as rice, sugarcane, banana and pineapple.

Source: ForumIAS