| Popis: |
A rough, cloddy surface has proved best to prevent soil from drifting and blowing on winderosion-susceptible lands lacking an organic residue cover. Except for cohesionless sands, most soils will form clods when stirred by tillage implements. Soil moisture, soil texture, type of tillage implement, and soil density largely determine the size and percentage of clods produced. Compaction has been considered detrimental from most viewpoints on agricultural soils, and considerable research has been concerned with means of preventing or alleviating compaction (1,4). However, soil compaction may be desirable for wind erosion control if the size and distribution of clods are increased by timely packing before tillage. This paper presents the results of a study initiated to determine the possibility of increasing the cloddiness of soils by increasing soil bulk density. |
