Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice

Weed infestation is a major problem in the aerobic rice system due to the lack of standing water that could prevent the growth of weeds. To reduce heavy reliance on herbicide, this research aims to determine the potential of cassava allelopathy for inhibition of weeds in aerobic rice. The allelopath...

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Published in:Sains Malaysiana
Main Author: Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127488499&doi=10.17576%2fjsm-2022-5103-01&partnerID=40&md5=afedb4c7dceb0a5e1ec4091b5948ffe8
id 2-s2.0-85127488499
spelling 2-s2.0-85127488499
Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
2022
Sains Malaysiana
51
3
10.17576/jsm-2022-5103-01
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127488499&doi=10.17576%2fjsm-2022-5103-01&partnerID=40&md5=afedb4c7dceb0a5e1ec4091b5948ffe8
Weed infestation is a major problem in the aerobic rice system due to the lack of standing water that could prevent the growth of weeds. To reduce heavy reliance on herbicide, this research aims to determine the potential of cassava allelopathy for inhibition of weeds in aerobic rice. The allelopathic potential of cassava extracts on the germination and growth of tested weed species (Eleusine indica, Ageratum conyzoides, and Cyperus distans) and aerobic rice (Oryza sativa) was conducted in the laboratory. The results showed that increasing the aqueous extract concentrations of cassava extracts inhibited the germination and seedling growth of tested weeds, suggesting the allelopathic effects of cassava extracts are concentration dependent. The degree of phytotoxicity of different vegetative parts of cassava can be classified in order of decreasing inhibition as follows: leaf, stem, tuber, and tuber peel. Aqueous leaf extract of cassava at a concentration of 0.5% (w/v) provided complete inhibition on A. conyzoides, E. indica, and C. distans germination whereas 25% to 100% inhibition on the shoot growth was recorded. By contrast, the shoot growth and germination of aerobic rice were not affected. These results suggest that the cassava leaf extracts contain water-soluble allelochemicals for inhibition on A. conyzoides, E. indica, and C. distans in aerobic rice. © 2022 Penerbit Universiti Kebangsaan Malaysia. All rights reserved.
Penerbit Universiti Kebangsaan Malaysia
1266039
English
Article
All Open Access; Gold Open Access
author Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
spellingShingle Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
author_facet Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
author_sort Taupik S.A.M.; Aani S.N.A.; Wai C.P.; Seng C.T.
title Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
title_short Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
title_full Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
title_fullStr Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
title_full_unstemmed Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
title_sort Allelopathic Potential of Cassava (Manihot esculenta L.) Extracts on Germination and Seedling Growth of Selected Weeds and Aerobic Rice
publishDate 2022
container_title Sains Malaysiana
container_volume 51
container_issue 3
doi_str_mv 10.17576/jsm-2022-5103-01
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127488499&doi=10.17576%2fjsm-2022-5103-01&partnerID=40&md5=afedb4c7dceb0a5e1ec4091b5948ffe8
description Weed infestation is a major problem in the aerobic rice system due to the lack of standing water that could prevent the growth of weeds. To reduce heavy reliance on herbicide, this research aims to determine the potential of cassava allelopathy for inhibition of weeds in aerobic rice. The allelopathic potential of cassava extracts on the germination and growth of tested weed species (Eleusine indica, Ageratum conyzoides, and Cyperus distans) and aerobic rice (Oryza sativa) was conducted in the laboratory. The results showed that increasing the aqueous extract concentrations of cassava extracts inhibited the germination and seedling growth of tested weeds, suggesting the allelopathic effects of cassava extracts are concentration dependent. The degree of phytotoxicity of different vegetative parts of cassava can be classified in order of decreasing inhibition as follows: leaf, stem, tuber, and tuber peel. Aqueous leaf extract of cassava at a concentration of 0.5% (w/v) provided complete inhibition on A. conyzoides, E. indica, and C. distans germination whereas 25% to 100% inhibition on the shoot growth was recorded. By contrast, the shoot growth and germination of aerobic rice were not affected. These results suggest that the cassava leaf extracts contain water-soluble allelochemicals for inhibition on A. conyzoides, E. indica, and C. distans in aerobic rice. © 2022 Penerbit Universiti Kebangsaan Malaysia. All rights reserved.
publisher Penerbit Universiti Kebangsaan Malaysia
issn 1266039
language English
format Article
accesstype All Open Access; Gold Open Access
record_format scopus
collection Scopus
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