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VOL. 11, ISSUE 1 (2026)
The effect of herbicide isopropylamine glyphosate 480 g/L on weed control in the circle area of immature oil palm (Elaeis guineensis Jacq.)
Authors
Yayan Sumekar, Intan Ratna Dewi Anjarsari, Nindia Sucia Dinata
Abstract
Uncontrolled weeds can reduce the growth and yield of oil palm. Weed
control in oil palm plantations is commonly conducted using herbicides due to
their effectiveness and efficiency. This study aims to determine the effect of
Isopropylamine Glyphosate herbicide 480 g/l at various doses on the control of
dominant weeds and the dry weight of weeds in TBM oil palm plant discs. The
research was conducted from April to August 2025 at an oil palm plantation in
Pakenjeng District, Garut Regency, West Java, using a randomized block design
with seven treatments and four replications. Treatments consisted of five
herbicide dosage levels. The treatments consisted of five herbicide dose levels
(2.25; 3.00; 3.75; 4.50; and 5.25 L/ha), manual weeding, and a control (without
weed control). Weed vegetation analysis prior to herbicide application was
carried out using the Summed Dominance Ratio (SDR) method, while weed dry
weight and phytotoxicity were observed at 4, 8, and 12 weeks after application
(WAA). The results showed that the application of 480 g/L glyphosate IPA
herbicide significantly reduced the dry weight of dominant weeds, namely Stachytarpheta
jamaicensis, Cyperus rotundus, and Urena lobata. The dose of
3.00–5.25 L/ha showed the most optimal and sustainable weed control
effectiveness up to 12 WAA, indicated by the very low dry weight of weeds
compared to the control and manual weeding treatments. In addition, the
application of 480 g/L glyphosate IPA herbicide did not cause phytotoxicity
symptoms in TBM oil palm plants. Thus, 480 g/L glyphosate IPA herbicide is
effective and safe to use for weed control in TBM oil palm plants.
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Pages:27-30
How to cite this article:
Yayan Sumekar, Intan Ratna Dewi Anjarsari, Nindia Sucia Dinata "The effect of herbicide isopropylamine glyphosate 480 g/L on weed control in the circle area of immature oil palm (<i>Elaeis guineensis</i> Jacq.)". International Journal of Food Science and Nutrition, Vol 11, Issue 1, 2026, Pages 27-30
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