Fig. 2. Comparison of half-life (t_1/2) of (a) methyl isothiocyanate (MITC) and (b) chloropicrin (CP) at three application rates of 195, 390, and 785 kg ha^–1 for MITC and 140, 280, and 560 kg ha^–1 for CP in fresh soils and sterilized soils of two fumigated nursery soils in incubation at 22°C. Vertical bars are standard errors.