Agriculture on Kadmat is essentially monocultural, dictated by the sandy, porous soil and lack of surface water. The coconut palm is the lifeblood of the island's agrarian economy. Nearly all available arable land is planted with coconut trees, providing food, drink, building materials, and income via copra and coir.
Beyond coconuts, islanders maintain small household gardens growing papayas, bananas, and a few root vegetables, but there is no commercial farming of grains or large-scale food crops. All rice, wheat, and major provisions are imported from the Indian mainland via ship.
Fisheries operate as the other pillar of local food production. Kadmat's waters are rich in skipjack tuna, snapper, and grouper. Local fishermen employ traditional, sustainable methods (like pole-and-line fishing), ensuring that the coral reefs and marine populations are not depleted by commercial trawling.

