Zone Districts Soil type North Eastern Zone Kancheepuram, Tiruvallur, Cuddalore, Vellore, Villupuram and Tirunvannamalai Red Sandy Loam, Clay Loam, Saline Coastal Alluvium North Western Zone Dharmapuri, Krishnagiri, salem and Namakkal (Part) Non Calcareous Red, Non Calcareous Brown, Calcareous Black Western Zone Erode, Coimbatore, Tiruppur, Theni, Karur (part), Namakkal (part), Dindigul, Perambalur and Ariyalur (part) Red Loamy, Black Cauvery delta Thanjavur, Nagapattinam, Tiruvarur, Trichy and parts of - Karur, Ariyalur, Pudukkottai and Cuddalore Red Loamy , Alluvium Southern Zone Madurai, Sivagangai, Ramanathapuram, Virudhunagar, Tirunelveli and Thoothukudi Coastal Alluvium, Black, Red Sandy Soil, Deep Red Soil High rainfall Kanyakumari Saline Coastal Alluvium, Deep Red Loam Hilly The Nilgiris and Kodaikanal (Dindigul) Lateritic

TYPES OF SOIL IN DIFFERENT AGROCLIMATIC ZONES

Source:
http://tnhorticulture.tn.gov.in/horti/agro-climatic-zones