... peanuts, maize, peas, Phaseolus beans, rice (Cyperus difformis, C. esculentus, C. serotinus, Monochoria vaginalis, Sagittaria pygmaea, S. sagittifolia, Alisma ... freshly collected field soils, aerobic DT50 (lab., 20 ºC) was 14 d. In lab. degradation studies, with soils of proven biological ... DT50 (average) was 17.8 d; DT50 (field, average) was c. 12 d; corresponding DT90 was 44 d. Koc 13.3-176 ml ...