Efficacy of glyphosate and its mixtures against weeds under young rubber forest plantation

Ahmad Faiz M. A., . Efficacy of glyphosate and its mixtures against weeds under young rubber forest plantation. pp. 50-60. ISSN 1511-1768

Weed infestation is a major problem during the early stages of establishment of rubber forest plantation. Currently information on effective weed control system in young rubber forest plantation is limited. As the rubber forest plantation is often located in remote areas a weed control system which provides longer duration of weed control is preferred. Trials were conducted to determine effective rates of glyphosate isopropylamine and its mixtures against mixed weeds.Glyphosate isopropylamine at 1.08 kg ae/ha mixed with metsulfuron methyl at 0.03 kg ai/ha was safe and effective against weeds in rubber less than a year old. In rubber above two years old glyphosate isopropylamine at 1.08 kg ae/ha mixed with metsulfuron methyl (0.03 kg ai/ha) fluroxypyr (0.3 kg ae/ha) dicamba (0.6 kg ae/ha) or premixed picloram 2 4-D (0.097 kg ae/ha 0.36 kg ae/ha) were effective. Glufosinate ammonium at 0.9 kg ai/ha gave shorter duration of control against mixed weeds compared to glyphosate (1.08 kg ae/ha) metsulfuron methyl(0.03 kg ai/ha). Glyphosate isopropylamine (1.08 kg ae/ha) metsulfuron methyl (0.03 kg ai/ha)at two or four rounds per year provided more effective weed control than slashing. Slashing at two or four rounds was ineffective and at two rounds per year gave rise to serious weed regeneration.

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Abstract

Weed infestation is a major problem during the early stages of establishment of rubber forest plantation. Currently information on effective weed control system in young rubber forest plantation is limited. As the rubber forest plantation is often located in remote areas a weed control system which provides longer duration of weed control is preferred. Trials were conducted to determine effective rates of glyphosate isopropylamine and its mixtures against mixed weeds.Glyphosate isopropylamine at 1.08 kg ae/ha mixed with metsulfuron methyl at 0.03 kg ai/ha was safe and effective against weeds in rubber less than a year old. In rubber above two years old glyphosate isopropylamine at 1.08 kg ae/ha mixed with metsulfuron methyl (0.03 kg ai/ha) fluroxypyr (0.3 kg ae/ha) dicamba (0.6 kg ae/ha) or premixed picloram 2 4-D (0.097 kg ae/ha 0.36 kg ae/ha) were effective. Glufosinate ammonium at 0.9 kg ai/ha gave shorter duration of control against mixed weeds compared to glyphosate (1.08 kg ae/ha) metsulfuron methyl(0.03 kg ai/ha). Glyphosate isopropylamine (1.08 kg ae/ha) metsulfuron methyl (0.03 kg ai/ha)at two or four rounds per year provided more effective weed control than slashing. Slashing at two or four rounds was ineffective and at two rounds per year gave rise to serious weed regeneration.

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Item Type:	Article
AGROVOC Term:	Glyphosate
AGROVOC Term:	Rubber
AGROVOC Term:	Forests
AGROVOC Term:	Plantations
AGROVOC Term:	Weeds
AGROVOC Term:	Metsulfuron
AGROVOC Term:	Methylation
AGROVOC Term:	Dicamba
AGROVOC Term:	Slashing
AGROVOC Term:	Rubber crops
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 03:11
URI:	http://webagris.upm.edu.my/id/eprint/22921

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