The Wholesale Price Index (WPI) based inflation was (-)2.65 per cent in April. It has been in the negative zone since November 2014.
Inflation in May last year was 6.18 per cent.
The lower inflation comes amid a forecast of deficient monsoon this year.
As per the government data released today, vegetable inflation was (-)5.5 per cent, with potato recording a dip of about 52 per cent.
Also Read
Overall food inflation was 3.8 per cent, much lower than the previous few months.
Similarly, the May inflation in manufactured items (food products, sugar, edible oils, beverages, etc) declined by 0.64 per cent, lowest in past many months.
Inflation in fuel and power basket was at (-)10.51 per cent on annual basis, though slightly up from April.
Retail inflation in May, as measured on Consumer Price Index (CPI), was 5.01 per cent, marginally up from the previous month.