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The Effect Of Pesticides Dichlorodiphenyl Trichloroeyhane (d.d.y) And Benzene Hexachroride (bhc) On The Microflora Of The Three Types Of Soil
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It is known
to contain remarkable properties and does not occur naturally too. Its
first synthesis was recorded in 1874 by a German research chemist
called. Zeidler
In the mid 60s, the benefits steaming from the
ability of DDT to control insect pest could be counter balanced by
adverse effects on other element of the enriroment. Detailed reviews of
properties, stability, prehistoric and impact upon all facets of the
environment were carried out with DDT and other chlorinated organic
insecticides. Concern over the undesirable effects of pesticide
culminated insecticides, fungicide,nd rodenticide act (FIFRA) by
public. Law o2-516, the federal environmental pesticide control act
(FEPCA) in united state of American to prevent unreasonable
environmental hazard from pesticides for general and restricted users as
a function of acute toxicity Benzene hexachloride (BHC) is an
organochiloride pesticide for its efficiency in the control of
anthropoid pests. There is fear that BHc will probable have adverse
effect on non targeted microflora of the soil the aplastic anemia
reported in individual said to have been exposed to BHC has been
attributed to benzene, which causes aplastic anaemia. But BHc is based
on cylohexane. Which does not cause anaemia (grawhill 1982).
1.2 AIM AND OBJECTIVES
To
determine the effect of pesticide dicblorodipheny trichloroethane (DDT)
and benzene hexachloride (BHC) on the microflora of three types of
soil.
To isolate soil microflora from the three types of soil.
Iii To identify soil microflora of the three type of soil.
To determine the type of soil that is mostly affected by pesticides.
1.3 STATEMENT OF PROBLEM
According
to (Higa 1990) Agricultural practices can have a significant positive
and negative impact on soil. For example wrong application of pesticides
(DDT) and BHC) is detrimental to soil microflora. Therefore it is
necessary to determine the effect of D.D.T and BHC. On the microflora
of three types o soil.
1.4 HYPOTHESIS
Ho Pesticides do have detrimental effect on the microflora of three types of
soil.
Ho Pesticide do not have detrimental effect on microflora of the three types
of soil.
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ABSRACT - [ Total Page(s): 1 ]The effect of pesticides, chchlorodipheny trichloroethane (DDY) and Benzene hexaxhoride (BHc) on the microflora of the three types of soil (loamy, clay and sandy soil) was conducted. The serial dietitian technique was employed up to 10-3 using nutrient agar, potato dextrose agar and sabourand agar plates. The isolation of both bacterial and fungal organisms were made before treating the soil types with the two pesticides), D.D.T and BHC. and after treating the soil types with D.D.T after t ... Continue reading---
