Understanding Operation Withholding Dates

Harvest operations can have interdependencies that should be managed to ensure optimum crop production of a harvest and worker safety. These interdependencies are managed using withholding dates to control the validation between harvest operations. The system displays a warning message when an operation is planned inside of the withholding period of another operation.

This table defines the withholding type codes, provides descriptions, explains when to use each code, and gives examples of when to use each code:

Withholding type code	Description	Use	Example
P	Prior activity	Use when an operation should not have any activity for a period before starting this operation.	Two days before a pruning operation, no spraying, cutting, or irrigating operations should be performed in that area.
R	Reentry to block	Use when the operation is complete and no one should reenter the block for a given number of days.	Workers should not enter the area for one day after a pesticide spray operation is performed.
H	Harvest activity	Use when the harvest cannot occur until a specific number of days after this operation.	A chemical spray is applied to the harvest and government regulations require a waiting period before harvesting can begin.
S	Subsequent activity	Use when subsequent operations cannot be scheduled until a specific number of days after this operation is complete.	An irrigation activity is performed and additional operations should not be scheduled for the next two days.