Food inflation rose by 0.36 percentage points to 15.46 per cent in the week ended September 11. It was 15.10 per cent in the previous week. The rise in food inflation is mainly due to rise in the cost of cereals, select vegetables and milk. This is the fourth consecutive week that the rate of food prices has risen.Many parts of the country including Delhi, Haryana, Punjab, Uttar Pradesh, Himachal Pradesh, Assam and the desert state of Rajasthan have been witnessing torrential rains that have disrupted supplies of staples resulting in rise in their prices.Annually, cereals prices rose 6.75 per cent driven mainly by higher prices of pulses, rice and wheat.Among other food items, milk prices soared 23.41 per cent during the week compared to the same period last year, while that of fruits by 10.33 per cent.Vegetables also became dearer by 6.84 per cent on an annual basis, while potato became cheaper by 48.56 and onions by 1.97 per cent.