Step 1: Understanding the Question:
This question identifies a specific, historically important traditional agroforestry system in India.
Step 2: Detailed Explanation:
• In the semi-arid Kangeyam tract of the Coimbatore/Erode region in Tamil Nadu, farmers have traditionally maintained "Korangadu" pastures.
• These pastures consist of a three-tier system: Acacia leucophloea (trees) for shade and pods, Cenchrus ciliaris (Kolukkattai grass) for fodder, and Commiphora berryi (live hedge).
• This system is primarily used for rearing the famous Kangeyam breed of cattle.
• The trees (Acacia) provide nitrogen fixation and nutritious pods during the dry season, while the grass is highly drought-tolerant.
Step 3: Final Answer:
This system is commonly seen in the Kangeyam tract of Tamil Nadu.