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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Ilmiah Media Agrosains
Hartini Hartini
Politeknik LPP Yogyakarta
Agriculture, Biological Sciences & Forestry Engineering

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PENGARUH KONSENTRASI DAN LAMA PERENDAMAN ZAT PENGATUR TUMBUH (ZPT) ALAMI EKSTRAK DAUN KELOR TERHADAP PERTUMBUHAN BIBIT TEBU (Saccharum Officinarum L.) BUD SET Hartini Hartini
Jurnal Ilmiah Media Agrosains Vol 7 No 1 (2021): Edisi Desember
Publisher : Unit Penelitian dan Pengabdian Masyarakat (UP2M) Politeknik Banjarnegara

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Abstract

Moringa plants have many compounds that can be used as medicine or used to stimulate plant growth. Moringa plants contain growth hormones, namely cytokinins and zeatin. The utilized Moringa leaves as a natural or organic growth regulator that can be affect plant growth. This study aims to determine the use of Moringa leaves as a natural ZPT and the length of soaking for the growth of sugarcane bud sets for researchers themselves or those who read this research report. The research was conducted at the LPP Polytechnic Practice Garden, Wedomartani Village, Sleman Regency, Yogyakarta from January to June 2020 (7 months). Experiments were arranged in a factorial randomized block design (RBD). The first factor was giving the concentration of Moringa leaf extract which consisted of 4 treatments, namely: without giving Moringa leaf extract (K0), 10% (K1), 20% (K2), and 30% Moringa leaf extract (K3). The second factor is the immersion time of Moringa leaf extract which consists of 4 treatments, namely: without soaking Moringa leaf extract (R0), 10 minutes (R1), 20 minutes (R2), and 30 minutes (R3). There were 16 treatment combinations and was repeated 3 times so that there were 48 experimental units. Each experimental unit consisted of 2 plants so that there were 96 plants in total. The results showed that there was no interaction between the concentration of Moringa leaf extract treatment and the duration of soaking. Giving the concentration of Moringa leaf extract and the duration of soaking did not occur any interaction between the two treatments and had a single significant effect, namely the concentration on several variables, namely plant height, stem diameter, wet weight and dry weight. Giving the concentration of Moringa leaf extract as much as 20% produced plant height, stem diameter, number of leaves with wet weight and dry weight were higher than without giving moringa leaf extract. Key words: bud set, concentration, growth regulatory substance, immersion
Innovative Weed Control Technologies in Oil Palm Circles: Evaluating Effectiveness and Cost Efficiency at the Immature Phase Heru Wansyah Harahap; Hartini Hartini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.184-197

Abstract

Weeds become major constraint in oil palm plantations as they compete for nutrients, light, and water, thereby extending the non-productive period. This study aimed to evaluate the effectiveness of weed control methods on the dominant weed species in the immature oil palm plants (TBM). The research was conducted at Johan Sentosa Estate, PT Agrinas Palma Nusantara, using a Randomized Block Design with three treatments and 10 replications. The treatments involved A (450 mL/ha glyphosate + 22.7 g/ha metsulfuron-methyl), B (manual weeding), and C (450 mL/ha paraquat + 22.7 g/ha metsulfuron-methyl). Observation included weed mortality, regrowth, phytotoxicity, and operational cost. Data was analyzed using Kruskal–Wallis and Mann–Whitney tests at a 5% significance level. Results showed significant differences among treatments (p < 0.05) with manual weeding (B) achieved the highest weed mortality in the early observation (mean rank = 15.50) but incurred the highest annual cost 589,621.45 IDR/ha. Treatmant A provided the most effective suppression of weed regrowth up to the 8th week (mean rank = 15.50) with annual cost 355,056.61 IDR/ha, and treatment C showed comparable effectiveness to A but a lower cost 339,397.25 IDR/ha. None of the treatments caused phytotoxicity symptoms (score 0) on oil palm plants. The treatment A using glyphosate and metsulfuron-methyl was identified as the most effective and cost-efficient weed control method for immature oil palm circles.
Co-Authors Heru Wansyah Harahap