Which Naga groups use terracing and irrigation for farming?

In the state of Nagaland, the Angamis and the [Chakhesangs], who reside in the southern regions of Kohima, are the specific Naga groups that utilize terracing and irrigation techniques for farming.1

While many Naga tribes traditionally practice shifting cultivation, known as jhum, the use of terracing and irrigation by these two groups distinguishes their agricultural approach from the more widespread practice that has contributed to soil erosion and reduced fertility in the region.12