The Influence of Fly-Ash on 2,4-Dichlorophenoxy-Acetic Acid Persistence in Corn Cultivation and Soil
(EN)
Albanis, T. A.
(EN)
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
(EL)
Albanis, T. A.
(EN)
The influence of fly ash (raw material ignite from thermal station, pH = 11.2) in the fate of 2,4-dichlorophenoxy-acetic acid (2,4-D) was studied in an experimental corn cultivation, under environmental conditions of Ioannina region (N.W. Greece). An amount of fly ash equal to 0.15% p.w. of soil for a depth 0-10 cm was used in a sandy-clay-loam soil on the 18th of May 1988 when the sowing of the corn took place and the herbicide was applied after 21 days. Analyses of soil samples for 220 days, in a period between June 8, 1988 and January 14, 1989 showed that the addition of fly ash decreases the half-life of 2,4-D, from 25.5 to 19 days. The final results of fly ash addition showed a decrement of 2,4-D residues of about 24% in soil without corn cultivation and 41% in soil with com after 129 days. For the 2,4-D residues in corn plants the corresponding decrements were 17.6% after 18 days and reach 37.5% after 114 days.
(EN)
