Effect of Soil Characteristics on Atrazine and Linuron Adsorption
Munehiro EBATO, Kenichi MATSUMURA and Koyo YONEBAYASHI
J. Pestic. Sci.
27, 337-346 (2002)
To clarify the effect on herbicide adsorption of soil characteristics, we used an adsorption ratio (AR). The equation for AR is as follows; AR (%)¡á(amount of herbicide adsorbed on soil per unit weight)/(initial amount of herbicide)¡ß100. By using the distribution of AR (DAR), we could estimate the adsorbability and adsorption capacity for atrazine and linuron of 42 soil samples from Japan. The soils were classified into 6 groups in both cases. The organic matter factor (OM) contributed most to the classification. Because the soil characteristics affected atrazine and linuron adsorption in different ways, the soils were classified with different patterns. Atrazine adsorption in the soils highly saturated with cations showed that the adsorption capacity of the soils was low using DAR.
