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VOL. 8, ISSUE 1 (2026)
Effect of a mixed herbicide of Ammonium glufosinate 120 g/L + 2,4-D dimethylamine 100 g/l on weed control in the circle area of immature oil palm (Elaeis guineensis Jacq.)
Authors
Yayan Sumekar, Intan Ratna Dewi Anjarsari, Angelia Christiani Munthe
Abstract
Weed control in immature oil palm (TBM)
plantations is a critical management practice to support optimal plant growth
due to intense competition between weeds and the crop during this stage. This
study aimed to evaluate the effectiveness and appropriate dosage of a mixed
herbicide containing Ammonium Glufosinate 120 g/L and 2,4-D Dimethylamine 100
g/L for weed control in the circle area of immature oil palm plantations. 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 (1.5, 2.0, 2.5, 3.0, and 3.5 L/ha), manual weeding, and
an untreated 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 indicated that the dominant weed species at the study site
were Cyperus rotundus L., Stachytarpheta cayennensis, and Galinsoga
quadriradiata. Application of the mixed herbicide at all tested dosages
effectively suppressed the dry weight of dominant weeds compared to manual
weeding and the untreated control up to 12 WAA. Phytotoxicity observations
showed that the mixed herbicide did not cause any toxic symptoms on immature
oil palm plants. Therefore, the mixed herbicide of Ammonium Glufosinate 120 g/L
+ 2,4-D Dimethylamine 100 g/L is effective and safe for weed control in the
circle area of immature oil palm plantations.
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Pages:45-49
How to cite this article:
Yayan Sumekar, Intan Ratna Dewi Anjarsari, Angelia Christiani Munthe "Effect of a mixed herbicide of Ammonium glufosinate 120 g/L + 2,4-D dimethylamine 100 g/l on weed control in the circle area of immature oil palm (<i>Elaeis guineensis</i> Jacq.)". International Journal of Agriculture and Plant Science, Vol 8, Issue 1, 2026, Pages 45-49
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