Andhra Pradesh attracted around 11 per cent investment from both public and private sources across India in the decade, the Assocham's 'Irrigation investment in India: State level experience' study said.
"While regions that now comprise Telangana state have managed to almost double its share in investments attracted by irrigation sector from about 6 per cent in 2004-05, share of regions in the new Andhra Pradesh state remained more or less unchanged at about 11 per cent," the study said.
India's public sector accounted for almost 98 per cent of investment projects in the irrigation sector, it said.
"Government needs to bring in policy changes to improve efficiencies, encourage accountability, transparency, willingness to promote irrigation development thereby ensuring that irrigation services are more resource-efficient, responsive to farmers needs and equitable," Secretary General of Assocham D S Rawat said.
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Investments attracted by irrigation sector in Gujarat also declined at a CAGR of over 5 per cent in the ten year's time.
Over 84 per cent of the total irrigation projects remained under implementation as of 2014-15. Out of the total 361 live investment projects in the sector, 248 projects remained stuck and of these 189 reported time/cost overrun, it noted.
Projects in Jammu and Kashmir, Jharkhand, Bihar, UP and Kerala are facing maximum delay. All state governments should set up an irrigation development authority to look after such projects so they complete on time, Assocham suggested.