More than half the population depends on agriculture (largely subsistence agriculture) for its livelihood.
The inefficient (largely subsistence) agricultural sector has failed to keep up with rapid population growth, and Nigeria, once a large net exporter of food, now must import food.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "largely subsistence" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.