1994 Volume 56 Issue 1 Pages 71-78
The authors examined a reducing effect by no-tillage farming (NT) on the production of carbon dioxide (PCO2) from agriculture which was concerned in the world. Firstly, we made a list of various production units of carbon dioxide. Secondly, we discussed the reducing effect by NT on the PCO2. The PCO2 from chemicals was less than 10% that from fuel consumed by machinery. The subtotal PCO2 from fuel and chemicals was notably reduced by NT. But the subtotal PCO2 from crop residue, soil respiration and manure was too much as compared with the subtotal PCO2 from fuel and chemicals, so the reducing effect by NT weakened apparently. But importance of the reducing effect on fossil energy input of which NT has is unchangeable.
