Translations:Benutzer:Arian/Klett-Mini-Test/1103/en

upon an unfastened ground. The relationship to the depth-forces and height-forces must be ensured. The legal requirement to compost on an impermeable surface (a concrete slab) severs the working of forces in the compost heap from the depth-forces of the earth working upward from below. The compost heap is a piece of inverted earth, comparable to a lignified tree trunk rooting in the earth and rising above it into the airy periphery. The view that composting causes appreciable quantities of nitrate to filter into the subsoil is theory. Through the mucilaginous substances released in the course of decomposition, the soil pores seal themselves shut. With the coarse pores of sandy soils it is advisable to coat the ground surface with a thin skin of bentonite (swelling clay). The possible risk of occasional localised nitrate leaching, resulting from seepage water escaping after heavy rainfall, is as a rule the consequence of improper setting-up and inadequate covering. This deficiency is easily remedied.