Distance of the skimmer from the actual body.
Top layer of soil, weedy and grassy, rich in organic substances, it loses its lumpy structure due to weather conditions and kneading by machines. Deep placement of this layer helps to restore its lumpy structure and destroy weed seeds, caterpillars and other pests of cultivated plants. The distance of the skimmer from the actual body should be this, that the furrow cut with the plow body can move freely and that the plow does not clog. When plowing green manure, when plowing weed and turfed soils, the skimmer should be set to cut the main mass of the roots. Skimmers are only used for deep plowing.