Mod 7: Comparative Classification of Agro-Climatic Zones
Bihar's agricultural landscape is classified into three prominent agro-climatic zones based on geomorphology, drainage network, precipitation gradient, temperature extremes, soil structure, and cropping patterns.
| Agro-Climatic Zone | Soil Characteristics | Average Rainfall | Temperature Extremes | Primary Crops | Constituent Districts |
|---|---|---|---|---|---|
| North-Western Alluvial Plain (Zone I - 13 Districts) |
Medium acidic, heavy texture, sandy loam to clayey loam; flood-prone | 1,245 mm | Max: 36.6°C Min: 7.7°C |
Rice, Wheat, Maize, Potato, Sugarcane, Mango, Litchi | West Champaran, East Champaran, Siwan, Saran, Sitamarhi, Sheohar, Muzaffarpur, Vaishali, Madhubani, Darbhanga, Samastipur, Gopalganj, Begusarai |
| North-Eastern Alluvial Plain (Zone II - 8 Districts) |
Light to medium texture, slightly acidic, sandy to silty loam | 1,450 mm | Max: 33.8°C Min: 8.8°C |
Maize, Jute, Pineapple / Pomegranate | Purnia, Katihar, Saharsa, Supaul, Madhepura, Khagaria, Araria, Kishanganj |
| South Bihar Alluvial Plain (Zone III - 17 Districts) |
Alluvial to sandy loam | 1,115 mm | Max: 37.1°C Min: 7.8°C |
Rice, Wheat, Pulses | Sheikhpura, Munger, Jamui, Lakhisarai, Bhagalpur, Banka, Rohtas, Bhojpur, Buxar, Kaimur, Arwal, Patna, Nalanda, Nawada, Jehanabad, Aurangabad, Gaya |
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Interactive Practice MCQs
Question 1: In the North-Western Alluvial Plain (Zone I), what is the recorded average annual rainfall?
Question 2: Which Agro-Climatic Zone records the highest maximum temperature at 37.1°C?
Question 3: Jute is a characteristic primary crop of which Agro-Climatic Zone in Bihar?
Question 4: To which Agro-Climatic Zone do the districts of Muzaffarpur, Vaishali, and Begusarai belong?