Soil-physical aspects of zero-tillage experiments.

Abstract

Structural determinations (visual rating, penetro-meter resistance, core sampling) in zero-tillage experiments on various soils (marine loam, river clay, sand etc) showed greater soil densities in unfilled plots than after plowing (20 cm), while mean pore-space and standard deviation of pore-space were generally lower in untilled plots. Moisture content at pF2 was often lower on untilled plots, and the latter possessed many more spots of low air content than ploughed plots did. Satisfactory yields of potato of good quality were produced, at least on medium-textured soils, after several years of zero-tillage. (Abstract retrieved from CAB Abstracts by CABI’s permission)