Tacanian agronomy, also known as Ercian farming, developed quite differently from traditional farming and harvesting as one would be used to in the Metharian and Antraea. While the Metharian developed under field-based agriculture, the Southern Bridgelanders continue to practice the ancient art of forest gardening, also known as Kahyiw (Bagang: Cauian, Shimorese: Ka’uyan, Kororoan: Hahaina). Instead of creating and irrigating fields for farming, Tacanians instead harvest food through deliberate intercropping and patient cultivation of designated patches of wild land; forests literally made for food.
Much of Tacania proper is dense, tropical rainforest sporting super-fertile soil called kirupela. To add to this, Tacania, identified with the Hyratian-era Rainbow Gardens, is renowned for its high concentration of thavma. These factors contribute to the year-round bountiful harvests which would not be as possible outside of the subcontinent. Much of Tacania's traditional food supply has come from this practice. In Kamakic-speaking societies, favor of the gods are considered to be paramount to maintaining this abundance, and has been theorized by anthropologists to be the origin of most post-Hyratian governments in Tacania.
Staple crops commonly cultivated are bananas, millet, yams, peanuts, kapi, kayaw, chilies, mangoes, breadfruit, tomatoberries, avocados and cashews, while common livestock include pigs, tapir, junglefowl, thoats, capybara, small deer, buffalo and rabbits. In some cases, Kahyiw tends to include aquaculture as well, sometimes making canals and ponds (a form of primitive irrigation) from rivers to make way and breed freshwater fish on purpose, such as tilapia or amikuwa.
Today, while monoculture has gained steam in more developed parts of such as Partania due to foreign demand, traditional Kahyiw continues to be the general norm. Kahyiw is protected, promoted and regulated in Partania, Kiropo, Tacak, Kororoa, Amponia, Shimor, Sikayan and Janjang.