State three factors which favour the cultivation of coffee in South India. Name the leading producer of coffee in India.

Three factors which favour the cultivation of coffee in South India are:

1. Altitude — Coffee is grown at an altitude of 800 to 1500 metres. South India has many high-altitude regions, such as the Western Ghats, which are ideal for growing coffee. Generally the slopes are protected from direct rain, direct sun rays and strong winds.
2. Climate — South India has a tropical climate that is well-suited to coffee cultivation, with moderate temperatures, abundant rainfall, and high humidity.
3. Soil — South India provides rich loamy laterite soil, rich in humus and iron oxide which favours coffee production.

Karnataka is the leading producer of coffee in India.