Residues of chlormequat (CCC) in fruits and other parts of tomato plants after treating the seedlings with 14C-CCC

CCC remaining in tomato plants after treating the seedlings with a solution of 125 mg/l CCC to prevent their excessive growth has been studied in experiment conducted for two years. When seedling had been treated twice with CCC, the tomatoes of the first crop from these plants contained 0.09 mg CCC/kg fresh fruit. The amount of residual CCC decreased with each further crop. The last crop contained only 0.02 mg CCC/kg fresh fruit. The amount of CCC in the remains of leaves and stems at the end of the vegetation period was similar to that in the fruit of the first crop, however, the amount of CCC in the remains of the roots was several times larger than in the fruit. CCC which had been added directly to compost soil was quickly degraded