Soil Contamination of leachates from wood preservative and agropesticides affecting seed germination
The purpose of this study was to compare the effects of the concentrations of CCA preservatives and agropesticides such as Chlorpyrifos, Cypermethrin and Permethrin. Two seed species, okra (Abelmoschusexculentus) and tomato (Solanumlycopersicum) were used for this experiment. The seed species wer...
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| Format: | Final Year Project Report |
| Language: | English |
| Published: |
Universiti Malaysia Sarawak, UNIMAS
2013
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| Online Access: | http://ir.unimas.my/id/eprint/7589/5/Soil%20Contamination%20of%20Leachates%20from%20Wood%20Preservative%20and%20Agropesticides%20Affecting%28OCR%29full%20text.pdf http://ir.unimas.my/id/eprint/7589/ |
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| Institution: | Universiti Malaysia Sarawak |
| Language: | English |
| Summary: | The purpose of this study was to compare the effects of the concentrations of CCA preservatives and
agropesticides such as Chlorpyrifos, Cypermethrin and Permethrin. Two seed species, okra
(Abelmoschusexculentus) and tomato (Solanumlycopersicum) were used for this experiment. The seed
species were germinated with different concentrations of CCA preservative, Chlorpyrifos,
Cypermethrin and Permethrin which are being treated in filter paper and soil. 4 replicated were done
for all the treatments. The seed germinations testing were evaluated for seven consecutive days. The
total of the seed germinated were recorded and the mean were obtained. It was found that there is
interaction between the chemicals however it was not scientifically practical to compare the chemicals
because the concentrations for each chemical are different. Thus, individual chemical was compared at
their concentration levels. In most cases, we can see that the numbers of germinating seeds are
decreasing as we increase the concentration. It is also found that as the concentration of chemical
increases, the pH value also decreases. In another word, the higher the concentrations of the chemicals,
the more acidic it is. This phenomenon can explain why the seeds are acting negatively on its
germination due to the unfavourable acidity. If we were to compare the effectiveness of agrochemicals
on the prohibition of seed germination, CCA is found to be highly phytotoxic to the seeds. No
germination is detected when 6% of CCA solution is used. Chlorpyrifos of higher concentrations also
prohibited the seed germinations. |
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