The growth of eight core sectors slowed down to one per cent in February mainly due to negative growth in crude oil, natural gas, refinery products, fertilisers, cement and electricity sectors. As per data released by the commerce and industry ministry today, growth rate of eight infrastructure sectors was 9.4 per cent in the same month last year.The core sectors, which contribute 38 per cent to the total industrial production, expanded 4.4 per cent in April-February this fiscal compared to 3.5 per cent growth in the same period previous financial year. However, coal and steel recorded positive growth during the month.