ANZ National Bank, the nation's biggest lender, lost rural customers as its loan book shrank during the 2011 financial year.
The local arm of Melbourne-based Australia & New Zealand Banking reported a fall in agriculture net loans to $17.32 billion as at September 30, from $18.55 billion a year earlier, according to its general disclosure statement.
Rural lending has traditionally been a strength for the lender, which grabbed the National Bank's base when it bought the rival bank in 2004, and it is still ANZ National's biggest non-residential exposure.
The bank blamed deleveraging in the rural sector for its reduction in second-half lending when it announced its annual result earlier this month.
ANZ National's total net loans fell to $83.61 billion as at September 30 from $85.91 billion at the end of the 2010 year, with residential loans flat at $43.79 billion from $43.89 billion a year earlier.