What does "controversial" mean here? [closed]
The sentence is not acceptable English. Arise is not a transitive verb. It has no object. In a slightly modified but acceptable usage such as "From the new agricultural reforms arose controversy.", it is being used in the sense of "Controversy arose from the new agricultural reforms."
I suspect that your sentence is a confused version of "The new agricultural reforms aroused controversy." The place of the controversy is not clear: it may be between the legislators and the public or it may merely be among the legislators.