Bordering a farm using trees


I have a large piece of land 100 hectares in tropical climate . I need to make border for my land and need advice

I can use barbed wire , wood or concrete posts for fencing off .

As it’s a big land I’m thinking maybe to reduce cost and increase profit to make border using trees.

At moment I’m thinking planting coconut trees along the demarcation to border my land or use palm nut oil trees . So that I also earn money from these and it reduces cost .

Has anyone used trees to fence off / border their farm land and what experience. Did you also use to link between trees wire or barb wire or just planted the trees .

If you used trees only or with barb wire or other method do u have photo to share ?