Whenever we plant seedlings in the plantation areas, they may not be 100% successful. Some of them are likely to get infested with grasses and weeds and pose a fire hazard in dry season resulting into gaps in plantation areas. In such condition, seedlings are replanted or seeds sown to fill the gaps, such operation is called casualty replacement, also called beating up, which is defined as restocking blanks in an artificially regenerated area with fresh sowings or plantings. These gaps are especially seen when plantation are grown by sown-seeds and those gaps are beaten up in August. Stumps or container plants are more suitable for filling blanks. Weeding helps in reducing the works of beating up.

Beating up work should be done by good planting stock so that it catches up with the rest of the crop. Planting out weak, small-sized plants or rejected thin stumps, is waste of time and money. Similarly, beating up work should not be done by species which would not go well with original species, e.g., fire tender Michelia champaca in Sal plantations.