New Delhi, Sept. 4 -- Output of key infrastructure industries reported a contraction in July compared to the year-ago period but the extent of output decline showed an improvement from the level seen in June, indicating this segment of economy is on a recovery path.

Data released by the economic adviser in the commerce ministry showed that the combined index of eight core industries contracted by 9.6% in July from a year ago.

Core sector output, which contracted by a sharp 37.9% in April as the country went into a stringent national lockdown, moderated the contraction to 22% in May and 12.9% in June.

Barring fertilizer production, which continued to grow for the third straight month in July, output of all other sectors covered by the ind...