How to find out the land is conservation land or not


I’m interested in buying a single family house but there is a large empty land behind it. Not sure It is a Farmland or corn field. I’m not interested to buy a house next to Farmland, specially a corn field. By looking at the map and street view, I cannot say for sure what it is. If it is a conservation land that would be great.

But how do I find out this is a conservation land not a farm land?I know I can go and talk to the people in the area and ask but is there any other way that we can look up online or something. This property is in South Windsor Connecticut. I live 4 hours from this property so I dont want to drive all the way there and find-out it is a cornfield.