The effect of various organic and synthetic substances on the physical and chemical properties of soils and earths used in vegetable growing under glass and plastic covers

Drews, M.

Archiv fur Gartenbau 21(1): 21-31

1973


Accession: 000229141

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Abstract
Experiments were carried out in which the density and the water, cation-exchange and nutrient-binding capacities were determined for FYM, high- and low-moor peat, straw, bark refuse, urea formaldehyde foam and polystyrene foam, and the changes in physical and chemical properties were recorded when these were mixed with soil. Inorganic N formation occurred only with urea formaldehyde foam. Compared with FYM, the K and P soil levels were very low with the other organic manures.