Step 1: Note the scheme name.
"Year of Agriculture" is also referred to as Krishak Kalyan Year, a Hindi-flavoured name that hints at a Hindi-belt state.
Step 2: Recall the state behind Krishak Kalyan branding.
Madhya Pradesh has previously used the Krishak Kalyan name for farmer-welfare programmes, and it declared 2026 under this theme.
Step 3: Eliminate the rest.
Karnataka, Gujarat and Meghalaya have not been reported with this specific declaration.
\[ \boxed{\text{Madhya Pradesh}} \]