Department of Agro-technology, Faculty of Agro-technology and Food Science, University of Malaysia Terengganu, 21030Kuala Terengganu, Terengganu, Malaysia.
* Correspondence author: E. Mail: chuahts@umt.edu.my.
1 Department of Biological Science, Faculty of Science and Technology, University of Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia.
This study was done to examine the allelopathic effects of chilli (Capsicum annuum L.), rice (Oryza sativa L.) and okra (Abelmoschus esculentus L.) extracts on germination and growth of goosegrass weed in laboratory bioassay, and effects of crop residues on seedlings growth of goosegrass weed in greenhouse. The most phytotoxic extract was chilli leaves, followed by chilli stem, which completely inhibited the germination of goosegrass at 20 and 30 g L−1, respectively. The chilli leaf and stem extracts at 40 g L−1 inhibited the seedling growth of goosegrass by 45 and 62%, respectively. The okra pod residues at 1.0 t ha−1 reduced the fresh weight of goosegrass seedling by 77% in sterilized soil. Thus extracts of chilli and residues of okra exhibit potent herbicidal activity on germination and seedling growth of goosegrass weed.
Abelmoschus esculentus, Capsicum annuum, chilli, crop residues, Eleusine indica extracts, goosegrass, herbicidal activity, okra, Oryza sativa, phytotoxicity
