الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
EHperimenh urere condurted in the faculty of Rgriculture, Moshtohor to study the side effect of four chlorinated hydrocarbon
msecnctdes (endrtn, nOT, dieldrin and lindane) at different
concentrations (5,10, 20 and 40 ppm) on germination and growth of both wheat and corn. R sandy loam soil nearly free from pesticides residues collected
from a newly reclaimed area in Salhia was used in tbis studg.
The soil treated by different concentrations of the tested
pesticides was planted with corn and wheat seeds and was irrigated
with water to 75’1’0 of its field capacity. Moisture content of .tne treatments were adjusted to be
75% of the field capacity by weighing the pots elJery two days
and compensating the water loss.
The percentages of germination were recorded after 10 days. TIle rents and green parts of tbe tested plants were
measured after 30 dnys of cuttiuetlen.
ure the roots of the plants mere etso determined after 30 days
of cuttioetion. tnsec:tiride residues leuels through bread professing were
also determined in grains, bran, flour and also on the final bread. The chemical analysis of pesticide residues were conducted following the Universal method. GlC uies used for the determination of these residues in both plants, soil, grains, bran, flour
and also in bread. 232 samples from cereal grains dnd their product were collected from 11 qouernoretes (RleHandri6, Behera, Gharbia, DakanHa,
Snarkia, Kafre-EI-Sheikh, Kolubi8, Monofia, Cairo, 61z11 and [I-Fayum).
These samples were Wheat, wheat flour, wheat bran, maize, maize flour, millet, rice, paddy rice, rice bran, barley and
bread. AU tllese samples were analyzed for pesticide r-esidues in190
Institut tat, Berlin.The same methods whic-h are used as a routine for nestierne residues analysis in this institute were used for the eHtraction,
clean up and determination of pesticide residues. Results indicated that the tested insecticides at all concentrations did not attect the percentage of corn and wheat
germination.
nil the tested insecticides decreased root growth of corn
plants when cultiuated in soil treated llJith pesticides at rates
more than 20 ppm.
The manlmum decrease in corn root growth (-30.8%) was
recorded from sou treated with lindane at the rate of 40 ppm.
Endrie, nOT and dieldrin at the same rate enhanced slightly
the root growth of com plants. The some concentrations of the
same insecticides tested hardly decreased the wheat root
growth ’(-33.3%, -75.2~ and 28.9% respectiuely).Concentration OJ the tasteu mser.ticide s at rates more tnan
10 ppm decreased the length of green parts of corn plants.
Wheat plants llJere moresenstttue to dieldrin and lindane than
to DDT and endrin. nu concentrations tested decreased the
length of the green nerts.
The phytotOltiC effects of the tested insecticides appeared
eJearly in the case of wheat and corn plants as it limited wilt
and chlorosis in the tip and edges of the reaues~ specially at
high rates trnore than 20 ppm) in most treatments. Undane and endrin enhanced th~-drgweight of corn plants
when cuttlueted at concentrations more than 20 ppm. The dry weights of the wheat plants urere decreased et all
concentrations tested of dieldrin, while the other tested insecticides
slightly enhanced the dry weight at cuncentretlens more than 5 ppm.Corn and wheat plants absorbed and translocated endnn,dieldrin, DDTand lindane residues from soil contaminated by the
tested insecticides at cODcentration of 40 ppm. higher than in green parts. lindane headed aU the tested insecticides in its absorption and translocation in both roots and
green parts.The concentrations in routs mere higher 0.9 and 2.93 ppm)
than in green parts (0.12 and 1.42 ppm) tR the case of wheat and corn respectiuetg. The mean pesticide residues in umeat grain samples
showed that grains contained 0.086, 0.138, 0.032 and 0.358 ppm
of endrin, IDOT,dieldrin, and lindane respectiuely. The wheat flour produced from these grains contained
0.0’03,0.016, 0.020, and .0.030 ppm of endrin, IDDT, dieldrin, and
lindane respectiuelg.
Bran contained higher concentrations of endrin (0.012 ppm}, lOOT(0.252 ppm), dieldrin (0.120 ppm) and lindane (0.536
ppm).Pesticide residues1ellels in fresh bread were O.n02, 0.007,
0.0 t 0 and 0.016 ppm of the abolJe insecticides respectiuely.
from 2’)2 samples iorm cereal gram ana If.l?lr prouucrs,
19~122, 20 and 3 semmes contained residues of lindane, IHCH~
~DDTand malathion niqherthen the o(:[eptoble residues limits
in FRG.More than 50% of the tested wheat samples contained
more than the acceptable limits of IH(H~ while from 54 maize, ”
samples only 10 samples contained high Ieuels of the same
compound.High Ieuels of IHCH and lindane were detected in 53.9% and
15.4% of the samples tested respectiuely unaccentebte reslcue Ieuels of pes tlctdes were detected in
100 <:’? 85 7 OJ st S’’Y! 80 O’”.!J 666-”-’1 63· OO~ 60 O¢~ 1:0 007 tC;, • ic, I. {:)” • l-C;. :I Ie:.. •. 101
• 1(.” ..J • /’0,
50.0’%, 36.3% and 24.6~~ of the samples from Cairo! Behera,
Gharbio, Kafre EI-Sheikh, D6~6hlia, Shartia, Giza, EI-Fayoum,
AleHandri8~ Monofia and Kalubia resperti1.1ely.