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Adsorption und Desorption von Methabenzthiazuron in verschiedenen Böden
Author(s) -
Kerpen W.,
Schleser G.
Publication year - 1977
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19771400611
Subject(s) - adsorption , desorption , soil water , chemistry , environmental chemistry , soil science , organic chemistry , geology
Adsorption and desorption of methabenzthiazuron in various soils A method investigating adsorption and desorption of pesticides using radioactive tracers and a computer programme is described. The adsorption and desorption of the herbicidal substance methabenzthiazuron in 7 soil samples is investigated. The adsorption of methabenzthiazuron decreases from the A p ‐ to the C‐horizons. A good correlation exists between the adsorbed amount of the herbicidal substance and the C‐ and N‐content of the soils. The relatively highest desorption was found with nearly humusfree soils. The amount of adsorbed herbicide residues, not desorbable by water in 5 desorption cycles, is much higher in the humic soils than in the nearly humusfree soils. From the relationship found between adsorption and corresponding herbicide concentrations proper adsorption values can be predicted for any herbicide concentration within the investigated concentration range by using one single adsorption measurement as a basis of calculation.