Disappearance of pirimicarb residues in fruits and leaves of Jonagold variety.

摘要

Studies on disappearance of pirimicarb residues in fruit and leaves of apple cv. Jonagold were carried out. The initial deposits of pirimicarb on leaves were 0.128+or-0.008 micro g/cm2 and disappeared according to exponential relations corresponding to first order rate equation P=0.1702e-0.1593t (R2=0.9899). The initial residues in fruits were 0.034+or-0.008 mg/kg and disappeared according to exponential equation P=0.0328e-0.0656t (R2=0.98), while expressed in micro g per single apple disappeared according to exponential equation P=2.004e-0.04t. The initial deposits of that insecticide on leaves and fruits expressed in mg/kg and in micro g/1apple dropped by half within 4, 11, and 17 days after treatment, respectively.