Efikasi Berbagai Herbisida terhadap Volunteer Oil Palm Seedlings (VOPS) di PT Agrolestari Mandiri

Abstract

Penelitian ini bertujuan mengevaluasi efikasi kombinasi herbisida triklopir, amonium glufosinat, dan metil metsulfuron dalam mengendalikan volunteer oil palm seedlings (VOPS) berukuran 50-70 cm dan 70-120 cm di PT Agrolestari Mandiri Region Ketapang 1, Kayung Estate. Penelitian dilaksanakan pada November sampai Desember 2025 menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal yang terdiri atas lima perlakuan dan tiga ulangan. Parameter yang diamati meliputi persentase kematian, perubahan tinggi, gejala keracunan, hari muncul gejala keracunan, dan fitotoksisitas. Hasil penelitian menunjukkan bahwa perlakuan herbisida berpengaruh sangat nyata terhadap seluruh parameter pengamatan. Perlakuan P3 (triklopir 3,2 ml/l + amonium glufosinat 4,0 g/l + metil metsulfuron 0,8 g/l + PMT 0,5 ml/l) memberikan hasil terbaik dengan persentase kematian sebesar 86,00% pada VOPS 50-70 cm dan 72,33% pada VOPS 70-120 cm pada 4 MSA. Perlakuan tersebut juga menghasilkan gejala keracunan tertinggi serta penekanan pertumbuhan terbesar dibandingkan perlakuan lainnya. Seluruh perlakuan tidak menimbulkan gejala fitotoksisitas pada tanaman kelapa sawit utama.

This study aimed to evaluate the efficacy of a herbicide combination consisting of triclopyr, ammonium glufosinate, and metsulfuron-methyl in controlling volunteer oil palm seedlings (VOPS) measuring 50-70 cm and 70-120 cm at PT Agrolestari Mandiri Region Ketapang 1, Kayung Estate. The study was conducted from November to December 2025 using a Randomized Complete Block Design (RCBD) with five treatments and three replications. Parameters observed were mortality percentage, growth suppression, injury symptoms, time to symptom appearance, and phytotoxicity on the main oil palm crop. Herbicide treatments significantly affected all observed parameters. Treatment P3 (triclopyr 3,2 ml/l + ammonium glufosinate 4,0 g/l + metsulfuron-methyl 0,8 g/l + PMT 0,5 ml/l) provided the best control, resulting in mortality rates of 86,00% for VOPS measuring 50-70 cm and 72,33% for VOPS measuring 70-120 cm at 4 weeks after application. This treatment gave the most noticeable response and reduced plant growth the most. No phytotoxicity symptoms were observed on the main oil palm plants.