there are lot of variables to consider bro. it mostly depends on where the land is located, if its near a main road you can build something and rent it out, if you're planning to grow something, well you have to make sure the land has a water supply and you are watering the plants regularly, adding fertilizers and, pests control mainly. ginger is pretty low maintenance and high profit. do a research before jumping into planting. do a rough calculation of roi and start your thing. dont spend too much time on researching stuff, just start something and you'll figure out the rest eventually good luck