(a)   the relationship between a security interest in crops and interests in the land on which the crops are growing; and

  (b)   the capacity for a security interest to attach to crops while they are growing, and to the products of livestock, before the crops or products become proceeds (for example, the wool on a sheep's back before it is shorn); and

  (c)   the priority to be given to security interests in crops (and proceeds) granted to enable the crops to be produced, and security interests in livestock (and proceeds) granted to enable the livestock to be fed and developed.