Did knowledge of farming go southwards 3000 years ago?

991 BCE, I believe.

Its 2010 now, so 3000 years ago would be 1023 B.C. because it is said that there was 33 years between B.C. and A.D.

Yes

That was 3000 years before Christ (before the year 1) in the current calendar. That makes it 5008 years ago. year one because the Romans had no concept of zero

Umm . .Noo. Although that wass a stupidd questionn too askk .