(1) When an application for reduction of premium is filed and approved, the rate on such crops withdrawn shall be computed in proportion to the time the insurance is in force, and in accordance with the maximum rate established for the zone in which said crops are growing.

spring crops		winter crops
Before July 6th inclusive	1/4 rate	Before June 17th	1/4 rate
Between July 6th and 12th	1/2 rate	Between June 17th and 23rd	1/2 rate
After July 12th	full rate	After June 23rd	full rate