A green manuring
package that will be an acceptable technology to Nigerian farmers must therefore be simple and concise.
The authors make the important point that the appropriate biomarkers co-occurred with potsherds as inclusions within the buried soils under investigation and the stratigraphic context of the samples take the inferred date of manuring
back to Early Minoan times (4500-3500 BP).
Rose D (1991) The effect of long-continued organic manuring
on some physical properties of soils.
The effect of green manuring
and fertilizer N application on enhancing crop productivity in mustard-rice rotation in semi-arid subtropical regions.
The constant manuring
had improved soil drainage to the point where excess water, by which mollusks gain entry into a garden, had been eliminated.
in the "rot and don't regrow" idea of green manuring
On average, manuring
treatments did not have any significant effects on the plant vigour at 12 weeks after planting (Table 1).
Sherratt did not mention a third way of increasing productivity - by using manure, possibly because there is so very little evidence for ancient manuring