The phytotoxic effects of palm oil dry solids on plant growth
Glasshouse and laboratory experiments were conducted to evaluate the phytotoxicity of palm oil dry solids (PODS) on growth of vegetables and the effect of decomposition on the reduction of PODS phytotoxicity. Raw and decomposed PODS was applied to sandy tailing soil at the levels of 0, 1, 3, 6, 9,...
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
1997
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3652/1/The_Phytotoxic_Effects_of_Palm_Oil_Dry_Solids_on_Plant_Growth.pdf |
| _version_ | 1825943528413331456 |
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| author | Othman, Radziah Hashim, Azizah Abdul Rahman, Zaharah |
| author_facet | Othman, Radziah Hashim, Azizah Abdul Rahman, Zaharah |
| author_sort | Othman, Radziah |
| collection | UPM |
| description | Glasshouse and laboratory experiments were conducted to evaluate the phytotoxicity of palm oil dry solids (PODS)
on growth of vegetables and the effect of decomposition on the reduction of PODS phytotoxicity. Raw and decomposed
PODS was applied to sandy tailing soil at the levels of 0, 1, 3, 6, 9, 15 and 21 % (w/w) and planted with tomato
and spinach seedlings. Samples of raw PODS were incubated at 30'C for 1, 2, 3, 4, 6 and 8 weeks and the aqueous
extract of each sample was bioassayed for growth inhibition of tomato radicles. Results from the glasshouse experiment
showed that growth of tomato and spinach was strongly affected by the type (raw or decomposed) and amount of
PODS applied. Growth of both plants was inhibited by application of >1%raw PODS. In contrast, application of
1- 21 % decomposed PODS increased plant growth, with maximum dry matter production at 6% level. At this level,
shoot dry weights of tomato and spinach increased 7 and 178 times, respectively, while root dry weights increased
1.6 and 62 times, respectively, compared to plants in raw PODS. Soil N, P and K contents, pH and electrical
conductivity also increased with increase in PODS levels. The incubation study showed that the phytotoxicity of raw
PODS was reduced when PODS was decomposed for > 4 weeks. |
| first_indexed | 2024-03-06T07:01:44Z |
| format | Article |
| id | upm.eprints-3652 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:01:44Z |
| publishDate | 1997 |
| publisher | Universiti Putra Malaysia Press |
| record_format | dspace |
| spelling | upm.eprints-36522015-09-07T03:07:15Z http://psasir.upm.edu.my/id/eprint/3652/ The phytotoxic effects of palm oil dry solids on plant growth Othman, Radziah Hashim, Azizah Abdul Rahman, Zaharah Glasshouse and laboratory experiments were conducted to evaluate the phytotoxicity of palm oil dry solids (PODS) on growth of vegetables and the effect of decomposition on the reduction of PODS phytotoxicity. Raw and decomposed PODS was applied to sandy tailing soil at the levels of 0, 1, 3, 6, 9, 15 and 21 % (w/w) and planted with tomato and spinach seedlings. Samples of raw PODS were incubated at 30'C for 1, 2, 3, 4, 6 and 8 weeks and the aqueous extract of each sample was bioassayed for growth inhibition of tomato radicles. Results from the glasshouse experiment showed that growth of tomato and spinach was strongly affected by the type (raw or decomposed) and amount of PODS applied. Growth of both plants was inhibited by application of >1%raw PODS. In contrast, application of 1- 21 % decomposed PODS increased plant growth, with maximum dry matter production at 6% level. At this level, shoot dry weights of tomato and spinach increased 7 and 178 times, respectively, while root dry weights increased 1.6 and 62 times, respectively, compared to plants in raw PODS. Soil N, P and K contents, pH and electrical conductivity also increased with increase in PODS levels. The incubation study showed that the phytotoxicity of raw PODS was reduced when PODS was decomposed for > 4 weeks. Universiti Putra Malaysia Press 1997 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3652/1/The_Phytotoxic_Effects_of_Palm_Oil_Dry_Solids_on_Plant_Growth.pdf Othman, Radziah and Hashim, Azizah and Abdul Rahman, Zaharah (1997) The phytotoxic effects of palm oil dry solids on plant growth. Pertanika Journal of Tropical Agricultural Science, 20 (2/3). pp. 91-99. ISSN 0126-6128 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2020%20(2&3)%20Aug.%201997/01%20JTAS%20Vol.20%20(23)%201997%20(Pg%2091-99).pdf |
| spellingShingle | Othman, Radziah Hashim, Azizah Abdul Rahman, Zaharah The phytotoxic effects of palm oil dry solids on plant growth |
| title | The phytotoxic effects of palm oil dry solids on plant growth |
| title_full | The phytotoxic effects of palm oil dry solids on plant growth |
| title_fullStr | The phytotoxic effects of palm oil dry solids on plant growth |
| title_full_unstemmed | The phytotoxic effects of palm oil dry solids on plant growth |
| title_short | The phytotoxic effects of palm oil dry solids on plant growth |
| title_sort | phytotoxic effects of palm oil dry solids on plant growth |
| url | http://psasir.upm.edu.my/id/eprint/3652/1/The_Phytotoxic_Effects_of_Palm_Oil_Dry_Solids_on_Plant_Growth.pdf |
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