The resource costs of agricultural production. En : Clean fuels from biomass, sewage, urban refuse, agricultural wastes : symposium papers

Krummel, John

1976

333.953
I249
1976

The resource inputs of energy, land and labor are analyzed for various food production systems. U.S. type intensive agriculture relies on large amounts of fossil fuel, fertilizer, and machinery to obtain high food yields. The ratio of the kilocalorie return of food energy to the total energy input is relatively low, ranging from 0.65 to 2.52 for the intensive crop production systems discussed...

AGRICULTURA; ASPECTOS ECONOMICOS; ENERGIA; CONGRESOS Y CONFERENCIAS;