Deteriorating asset quality and depleting capital adequacy have made banks opt for safer investment avenues, such as government securities.
The Reserve Bank of India, in its Macroeconomic and Monetary Developments report on Monday, said sharp deceleration in economic activities had resulted in poor credit offtake.
And, some parameters indicated deteriorating health of banks' balance sheets.
This has made lenders seek refuge in 'safer' investment avenues, resulting a 'compositional' shift in banks' asset portfolio in favour of investments in government securities.
"Banks tend to become risk-averse, as corporate profitability impinges on the health of their balance sheets and the possibility of adverse selection increases in a rising interest rate environment," it said.
RBI said the capital adequacy ratio of public sector banks had declined during 2011-12.
"These factors appear to have a bearing on their capacity to extend credit," it said.
Adding: "On the demand side, with the transmission of cumulative monetary actions having a desired impact on economic activity, particularly credit-intensive