Behavior and fate of ethylenethiourea in plants

Studies with manganese [14C]ethylenebis(dithiocarbamate) ([14C]maneb) fungicide and [14C]ethylenethiourea ([14C]ETU) in plants, soil, and water

“…Even in recovery studies in the laboratory, the degradability of ETU caused some analytical problems. Hoagland and Frear (1976) have reported similar handling difficulties (see p 130 of their report, first paragraph in the Results and Discussion section).…”

Residue Reviews

“…For the separation of degradation products, silica gel plates with F254 fluorescence indicator were used with two solvent systems, chloroform:ethanol (90:5) or ethanol:butan-l-ol:water (77:48:5), and visualization was achieved using ultraviolet absorption or, for ETU, iodine vapor. Hoagland and Frear (1976) studied the fate of ETU in beans, corn, lettuce, pepper, and tomato seedlings treated with 14C-Iabeled ETD. They reported that ETU was readily absorbed by the roots and the ETU concentration in the plants decreased with time until, 20 days after treatment, essentially no ETU could be detected.…”

“…Methods involving the use of liquid scintillation counting have been mentioned in previous sections (Nash 1976, Nash and Beall, Jr. 1980, Autio and Pyysalo 1983, Nitz et al 1984, along with procedures using autoradiography usually in conjunction with TLC (Hoagland and Frear 1976, Nash 1976, Autio and Pyysalo 1983.…”

Effect of Field and Washing Treatments on Ethylenethiourea Levels in Ethylenebisdithiocarbamate‐treated Canned Spinach

“…Engst and Schnaak (1974) have reported that the half life of EBDC fungicides in the field is on the order of 5 to 10 days. During this time conditions such as high temperature, humidity and light enhance the degradation of EBDC and ETU (Bontoyan and Looker 1973; Cruickshank and Jarrow 1973; Ross and Crosby 1973;Hoagland and Frear 1976). It was also noted that regardless of the rate of application, the levels of ETU were lower after 7 and 14 days than after 1 day of the EBDC application.…”