1) Use appropriate technology:
More wells should be built instead of large dams and irrigation schemes. Small irrigation can waste less water, stone lines and check dams. For example, Burkina Faso uses stones lines and Northern China uses small dams built of loess, which are constructed across gullies. Those methods only use 5% of farmland but increase the crop yields over 50%.
Fertilizer from local animals should be used instead of chemical fertilizer. Since fertilizer from animal is always available and free. Chemical fertilizer can cause disease.
Simple, reliable, agricultural tools made should be used instead of tractors. Because tractors can be broken and farmers need money to repair them.
Farmer can grow cash crops and subsistence crop together in smallholdings instead of cash crops (monoculture) on large estates. Farming mixes with crop rotation or intercropping will reduce soil erosion and exhaustion, protect crops (smaller plants protected by tree crops) and increase yields. For example, in Moc Chau district in Viet Nam, by using this method, crops yield is increased by 33% from 1994-2000.
2) Introduce a new “Green Revolution”:
In Mexico, 2 decades after World War II, new varieties of wheat and maize were developed. They produced dwarf plants capable of withstanding strong winds, heavy rain and diseases. Yields of wheat and maize tripled and doubled.
The IR-8 variety in Philippines has increased the crop yield by six times at its first harvest. The “super rice” has increased the yield by 25% (1994). Since then, more and more improvements have been made such as: the growing season is shortened, crops can withstand...