Efektivitas Triclopyr dan Metil Metsulfuron terhadap Pengendalian Gulma Pakis pada Kelapa Sawit Tanaman Menghasilkan

Abstract

VANNY MARSYANDA. Efektivitas Triclopyr dan Metil Metsulfuron terhadap Pengendalian Gulma Pakis pada Kelapa Sawit Tanaman Menghasilkan. Dibimbing oleh DWI GUNTORO Penelitian ini bertujuan membandingkan efektivitas herbisida Triclopyr dan Metil metsulfuron terhadap kedua jenis gulma serta menentukan dosis yang paling optimal berdasarkan nilai Summed Dominance Ratio (SDR), bobot basah, bobot kering, fitotoksisitas, dan persentase kematian gulma. Penelitian menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan lima perlakuan, yaitu kontrol (Triclopyr 110 mL/15 L air + Metil metsulfuron 16 g/15 L air), Triclopyr 200 mL/15 L air, Triclopyr 250 mL/15 L air, Metil metsulfuron 30 g/15 L air, dan Metil metsulfuron 35 g/15 L air. Hasil penelitian menunjukkan bahwa Stenochlaena palustris memiliki SDR tertinggi sebesar 41,92%, sedangkan Dicranopteris linearis sebesar 35,64%. Triclopyr 250 mL/15 L air merupakan perlakuan paling efektif untuk mengendalikan Stenochlaena palustris dengan persentase kematian mencapai 100% pada 8 MSA, sedangkan Metil metsulfuron 35 g/15 L air paling efektif mengendalikan Dicranopteris linearis dengan persentase kematian 100% pada 8 MSA. Seluruh perlakuan tidak menimbulkan gejala fitotoksisitas pada tanaman kelapa sawit.

This study aimed to compare the effectiveness of Triclopyr and Metsulfuron Methyl herbicides in controlling two fern weed species and to determine the optimal dosage based on the Summed Dominance Ratio (SDR), fresh weight, dry weight, phytotoxicity, and weed mortality. The study used a Randomized Complete Block Design (RCBD) with five treatments: a control (Triclopyr at 110 mL/15 L of water + Metsulfuron Methyl at 16 g/15 L of water), Triclopyr at 200 mL/15 L of water, Triclopyr at 250 mL/15 L of water, Metsulfuron Methyl at 30 g/15 L of water, and Metsulfuron Methyl at 35 g/15 L of water. The results showed that Stenochlaena palustris had the highest SDR of 41,92%, while Dicranopteris linearis had an SDR of 35,64%. Triclopyr at 250 mL/15 L of water was the most effective treatment for controlling Stenochlaena palustris, achieving 100% mortality at 8 weeks after application (WAA), whereas Metsulfuron Methyl at 35 g/15 L of water was the most effective treatment for controlling Dicranopteris linearis, also achieving 100% mortality at 8 WAA. None of the treatments caused phytotoxicity symptoms in the oil palm plants.