The payment of the rents provided for in the order of the court has precedence over and must be paid prior to any subsequent assignment of such rents, or lien upon such rents, and no part of such rents is exempt from the payments required under this chapter. The payment of the rents provided for in the order of the court, however, is subject and inferior to any lien which the government of the United States or any agency thereof may acquire as security for the payment of any seed, feed, or crop production loans.