ANALISIS KINERJA NOZZLE APLIKASI HERBISIDA PADA BERBAGAI FASE PERTUMBUHAN KELAPA SAWIT

Abstract

SAHAT MARULITUA MANURUNG. Analisis Kinerja Nozzle Aplikasi Herbisida pada Berbagai Fase Pertumbuhan Kelapa Sawit. Dibimbing oleh MUHAMMAD IQBAL NURULHAQ.

Pemilihan nozzle yang tepat menentukan efektivitas pengendalian gulma secara kimiawi di perkebunan kelapa sawit. Penelitian ini menganalisis kinerja tiga nozzle (blue cone/N1, orange flat fan/N2, adjustable black cone/N3) pada fase TBM, TMM, dan TMT serta dampak ekonomi dan lingkungannya. Rancangan tersarang digunakan dengan 27 unit percobaan. Parameter meliputi karakteristik droplet (water sensitive paper), mortalitas visual 3 HSA, dinamika kehijauan (GLI), dan biaya aplikasi. N1 dan N2 menghasilkan droplet medium (VMD 320,40 µm dan 238,67 µm), N3 fine (230,40 µm) dengan drift-prone <0,01%. N2 unggul dalam coverage (26,50%) dan uniformity (17,82%). Tidak ada perbedaan mortalitas antar nozzle (p>0,05), namun fase berpengaruh signifikan (p=0,0043). N2 paling ekonomis (Rp321.579/ha, efisiensi Rp56.718/% penurunan GLI) dan direkomendasikan untuk semua fase.

SAHAT MARULITUA MANURUNG. Performance Analysis of Herbicide Application Nozzles at Various Growth Phases of Oil Palm. Supervised by MUHAMMAD IQBAL NURULHAQ.

Proper nozzle selection determines chemical weed control effectiveness in oil palm plantations. This study analyzed three nozzles (blue cone/N1, orange flat fan/N2, adjustable black cone/N3) across TBM, TMM, and TMT phases, including economic and environmental impacts. A nested design with 27 plots was used. Parameters included droplet characteristics (Water Sensitive Paper–ImageJ), visual mortality at 4 DAA, greenness dynamics (GLI), and application costs. N1 and N2 produced Medium droplets (VMD 320.40 µm and 238.67 µm), N3 Fine (230.40 µm) with drift-prone <0.01%. N2 excelled in coverage (26.50%) and uniformity (17.82%). No mortality differences among nozzles (p>0.05) were found, but phase significantly affected greenness reduction (p=0.0043). N2 was most economical (Rp321,579/ha, cost efficiency Rp56,718/% GLI reduction) and is recommended for all phases.