title: Kresoxim methyl dissipation kinetics and its residue effect on soil extra-cellular and intra-cellular enzymatic activity in four different soils of India.
abstract: The rate of degradation of kresoxim methyl and its effect on soil extra-cellular (acid phosphatase, alkaline phosphatase and β-glucosidase) and intra-cellular (dehydrogenase) enzymes were explored in four different soils of India. In all the tested soils, the degradation rate was faster at the beginning, which slowed down with time indicating a non-linear pattern of degradation. Rate of degradation in black soil was fastest followed by saline, brown and red soils, respectively and followed 1st or 1st + 1st order kinetics with half-life ranging between 1-6 days for natural soil and 1-19 days for sterile soils. The rate of degradation in natural against sterilized soils suggests that microbial degradation might be the major pathway of residue dissipation. Although small changes in enzyme activities were observed, kresoxim methyl did not have any significant deleterious effect on the enzymatic activity of the various test soils in long run. Simple correlation studies between degradation percentage and individual enzyme activities did not establish any significant relationships. The pattern and change of enzyme activity was primarily due to the effect of the incubation period rather than the effect of kresoxim methyl itself.
authors.affiliation: a National Referral Laboratory , National Research Centre for Grapes , Pune , India.
authors.forename: Rupali P
authors.initials: RP
authors.lastname: Sabale
authors.forename: Ahammed
authors.initials: A
authors.lastname: Shabeer T P
authors.forename: Sagar C
authors.initials: SC
authors.lastname: Utture
authors.forename: Kaushik
authors.initials: K
authors.lastname: Banerjee
authors.forename: Dasharath P
authors.initials: DP
authors.lastname: Oulkar
authors.forename: Pandurang G
authors.initials: PG
authors.lastname: Adsule
authors.forename: Madhukar B
authors.initials: MB
authors.lastname: Deshmukh
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism*; D000469:Alkaline Phosphatase / Q000378:metabolism*; D004787:Environmental Pollution / Q000032:analysis; D004789:Enzyme Activation; D005659:Fungicides, Industrial / Q000493:pharmacokinetics*; D006207:Half-Life; D007194:India; D008689:Methacrylates / Q000493:pharmacokinetics; D010088:Oxidoreductases / Q000378:metabolism*; D010648:Phenylacetates / Q000493:pharmacokinetics*; D012989:Soil Pollutants / Q000493:pharmacokinetics*; D000073739:Strobilurins; D001617:beta-Glucosidase / Q000378:metabolism*
chemical_list: D005659:Fungicides, Industrial; D008689:Methacrylates; D010648:Phenylacetates; D012989:Soil Pollutants; D000073739:Strobilurins; C469328:kresoxim-methyl; D010088:Oxidoreductases; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase; D001617:beta-Glucosidase
keywords: Kresoxim methyl; degradation rate kinetics; half-life; intra-cellular and extra-cellular enzyme activity; soil