The cucumber plants grown in field were sprayed with methomyl at dose
(60-g a.i./100 liter water).The objectives of this work were to study role of
somehome Preparation (washing and peeling) in elimination of methomyl
residues from contaminated cu
cumber fruits. The washing processes caused
removal of residues methomyl from contaminated cucumber fruits that
collected at intervals: 1,3 days after one application by percent loss reached:
72,60 %, respectively.
The percent loss reached: 37.7, 45.8 % in cucumber fruits that collected at
intervals: 0, 2 days, respectively after two applications. The peeling processes
caused removal of residues methomyl from cucumber fruits that collected at
intervals: 0, 3 days after one application by percent loss reached: 58.75, 57.14
%, respectively. and in cucumber fruits that collected at intervals : 0, 2 and 3
days after two applications ,the percent loss was: 55, 62.7 and 34.6 %,
respectively.
Study was conducted at Hama on summer ١٩٩٨ to determine the
Persistence of two pesticides, the Organophosphorus Dimethoate, and the
Pyrethroid Deltamethrin, on the Grapes.
This study was carried out on soil samples collected from Damascus
country side (Alghota – Jesrin), in order to study the impact of organochlorine
insecticides resulted from heavy use for a long time.
The duration of experiment was ١١ monthes cove
ring four season
condition. Samples were taken from two levels, the surface (١٠ cm) and the
deep levels (٣٠-٤٥ cm). Soil samples were extracted by acetone, hexane and
chloroform solvents. Residues were detected by using GC.
