It is widely observed that the items like fruits, flowers, green vegetables, dairy products etc are either kept in farms, in
flower shops, in supermarkets or in cold storages. The demand of such items is very high and at the same time it is also
decreased owing to spoilage or decay. So we cannot ignore the effect of amelioration and deterioration in the inventory
management system. Here we developed an inventory model for both ameliorating and deteriorating items. The deterioration
rate is time-varying and amelioration rate is two-parameter Weibull distributed. The assumption of constant demand rate may
not be always appropriate for many inventory goods like milk, vegetables etc., the age of inventory has negative impact on
demand due to loss of consumer confidence on quality of such products. Here demand rate is considered as a cubic function of
time and shortages are allowed which are fully backlogged. The model is solved with salvages value associated to the units
deteriorating during the cycle
