What is the bes wayt to maintain and protect Agri land

- 12/19/21: I have planned to use trees around 6-9, 3 in each row making it look like block section and fence them mostly with diamond shape fence. Fencing has to closed one and to be meant for only for these trees. One can water from outside,  even one need not get inside to water the plants. Place to choose:  Choose area where ppl are entering into the field and where u do not know boundary of the field. You can also make entry and exit with doors inside these blocks to let tractors go, the will work as blocker equivalent to the gate. This way of doing is less expensive, you can preserve you field from others entering by blocking man/vehicle made entry places, and also u can have teak like trees grown safely.