C19H26O4S Liquid Propargite Biological Pesticide 57% EC CAS 2312 35 8

                                                                                      Propargite

An acaricide used for mite control on various field, fruit, vegetable and ornamental crops

Propargite, recently introduced in India, is an effective acaricide on a large number of crops most

of which are consumed by human beings directly or after processing. Therefore,

it has become important to check the dissipation behavior of propargite in edible raw commodities,

processed products and in the environment. In the present study, dissipation of residue of this acaricide in soil,

apple fruit and tea (green tea leaves, manufactured tea, infusion and spent leaves) was studied.

Analysis was carried out using high performance-liquid chromatography with UV detection system.

The dissipation rate was found to vary with the nature of studied crop/sample. In soil, half-life ranged from 43 to 45 days,

while in plant matrices (tea and apple) it ranged 1.66–2.61 days.

The percent transfer of propargite residue from manufactured tea to infusion was 23.60–40.00;

however, 35.71–53.20% of the residues remained stuck to the spent leaves

Propargite (Omite 57E), 2-[4-(1,1-dimethylethyl) phenoxy]cyclohexyl 2-propynyl sulfite, is a non-systemic acaricide being used widely for

controlling phytophagous mites infesting a variety of crops namely cotton, vines, fruit trees, vegetables, hops, nuts, tea etc. (Royal Society of

Chemistry, 1987). This specific miticide, has generally little or no effect on beneficial insects including predaceous mites, when used at doses

recommended for the control of mite pests (Uniroyal, 1997) and, for the reason, it can be utilized in developing new strategies of integrated pest

management.