1. (Don I) for transplanted rice.
Clay-loam soil, lowest in top sequence, suitable for long duration rice crop.
Suitable varieties: Swarna (MTU 7029), Rajshri, Sambha Mahsuri (BPT 5204) and Birsamati.
Medium land (Don II and Don III) for transplanted rice
• Don II: Clay loam soil and Best for rice production, Rarely faces drought, Suitable for medium duration rice.
• Don III: Drought prone, clay loam soil, transitional lands between don & tanr, upper toposequence and suitable for short duration rice
Suitable varieties : Anjali, Birsa Vikash Dhan 110, Sahbhagi, Abhishek, Naveen, Lalat, IR 36 and IR 64 etc.
1. Upland or Tanr land (Tanr I, Tanr II &Tanr III) for direct seeded rice
• Tanr I: Loam soil and land immediately adjacent to the houses. Land used for vegetables, maize and rice seedlings.
• Tanr II: Sandy loam soil, gentle sloppy, good soil depth, low WHC, poor in organic matter, erosion prone, acidic in nature.
• Tanr III: Sandy loam soil, sloppy, poor soil fertility, shallow soil depth, low WHC, Near foothills and acidic in nature.
2. Suitable varieties : Birsa Dhan 108, Bir
Rice based ecosystems for Jharkhand state are
1. Upland or Tanr land ecosystem
2. Medium land ecosystem
3. Low land ecosystem
1. The state is divided into the three rice sub zones. In General, the plateau region of Chotanagpur and Santhal Parganas is characterized by humid and sub humid tropical monsoon in sub zone IV, sub humid to subtropical in sub zone V and humid to sub-tropical in sub zone VI, undulating Plateau, hills and mountains, non existence of perennial rivers, initially high forest cover, which is depleting fast due to mineral and industrial exploitation and encroachment, concentration of tribal population