Table 4.
Scenarios (Sc) | Drivers of change | Crop rotation | Tillage | Crop establishment | Residue management |
---|---|---|---|---|---|
1 | Business as usual (Farmer’s practice) | Rice–Wheat-Fallow | Conventional tillage (CT) rice and wheat |
Rice: transplanting Wheat: broadcast |
All residue removed |
2 | Increase food production and income | Rice–wheat-Fallow | CT direct seeded rice (CTDSR) –Zero tillage (ZT) wheat |
Rice:drill seeding Wheat: drill seeding |
Full (100%) rice residue retained and wheat residue incorporated |
3 | Deal with rising scarcity of labor, water, energy, degrading soil health and emerging climatic variability | Rice–wheat-Fallow | ZTdirect seeded rice (ZTDSR)– ZT wheat |
Rice: Drill seeding Wheat: Drill seeding |
Full (100%) rice and anchored (15–20 cm height) wheat residue retained |
4 | Farmer’s practice for maize based system | Maize–wheat-Fallow | Maize- Fresh beds (FB);Wheat –CT |
Maize: Drill seeding Wheat: Broadcast |
All residues removed |
5 | Deal with rising scarcity of labor, water, energy, degrading soil health and emerging climatic variability | Maize–wheat-Fallow | Permanent beds (PB) | Same as in Sc3 using multi crop bed planter | Anchored residue of both the crops retained |
6 | Same as Sc5 | Maize–wheat-Fallow | ZT in both the cropson flat beds | Same as in Sc3 | Anchored residue of both the crops retained |
7 | Sustainable intensification of MW system through mungbean integration to deal same issues as in Sc3 | Maize–Wheat–Mungbean | ZT in all the three cropson flat beds |
Maize: Drill seeding Wheat: Drill seeding Mungbean: Drill/relay |
Anchored residue of both rice and wheat and full mungbean residue retained |