Income declared in section 44AF

Income from Agricultural based business is declared from 2000-01 to 2011-12 in the ITR ranging from 50000 to 200000 every year under section 44AF. At present no documents are available due to some circumstances only ITR are available. There is no query from the department. Wheather this income declared in 12 years nearly 16 lakhs will be considered the income for all purposes. Please give me the experts opinion along with the acts, rules and sections.