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Indian Journal of Horticulture
Year : 2019, Volume : 76, Issue : 1
First page : ( 148) Last page : ( 154)
Print ISSN : 0972-8538. Online ISSN : 0974-0112.
Article DOI : 10.5958/0974-0112.2019.00021.5

Effects of imazethapyr treated oil palm frond residue mulch on weed control and ornamental plant quality in nurseries

Masilamany Dilipkumar2, Nordin Muhammad Amirul1, Sahid Ismail Bin3, Seng ChuahTse*

Faculty of Plantation and Agrotechnology, Universti Teknologi Mara, Malaysia

1School of Food Science and Technology, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia

2Inbred Rice Programme, Rice Research Center, Malaysian Agricultural Research and Development Institute (MARDI), 13200, Seberang Perai, Kepala Batas, Pulau Pinang, Malaysia

3School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, University Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor, Malaysia

*Corresponding author's Email: chuahts@perlis.uitm.edu.my

Online published on 15 April, 2019.


A combination of oil palm frond (OPF) mulch and imazethapyr has been shown to provide good weed control in crop plantations, but information on its potential use for weed control in nurseries is limited. This study aims to evaluate the effect of imazethapyr in combination with OPF mulch on the inhibition of goosegrass, slender cyperus, coat buttons and phytotoxicty on ornamental plants under glasshouse conditions. Three suboptimal rates of imazethapyr, representing low, medium and high rates, are applied alone or used to treat 3.5 t ha−1 OPF residue powder (< 2mm). The low rate of imazethapyr at 10 g a.i. ha−1 and the OPF mulch alone inhibit seedling growth of goosegrass, slender cyperus and coat buttons by 40%-60%. The OPF mulch treated with imazethapyr at this rate acts synergistically and provides 80%-95% inhibition ofweed growth. However, increasing the rate of imazethapyr over 10 g a.i. ha−1 does not further improve weed inhibition, and results in antagonism on goosegrass and slender cyperus emergence. A subsequent experiment with the low rate of imazethapyr incorporated with OPF mulch causes moderate phytotoxicity on Chinese aloe and coral swirl, but minimal or no injury was observed for jasmine, cactus, puding and euodia at 4–12 weeks after treatment. Results suggest that incorporation of imazethapyr at 10 g a.i. ha−1 with OPF mulch can effectively control goosegrass, slender cyperus and coat buttons without injuring jasmine, cactus, puding and euodia.



Imazethapyr, oil palm frond residue mulch, weed control, ornamental plant.


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