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Sembodo, Dad Resiworo Jekti
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UJI CAMPURAN HERBISIDA BERBAHAN AKTIF DIURON, HEXAZINON, DAN DIURON+HEXAZINON TERHADAP BEBERAPA JENIS GULMA Sembodo, Dad Resiworo Jekti; Wati, Nana Ratna
Jurnal Agrotek Tropika Vol 11, No 1 (2023): JURNAL AGROTEK TROPIKA VOL 11, FEBRUARI 2023
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v11i1.6922

Abstract

Tujuan dilakukannya penelitian ini adalah untuk mengetahui efektivitas dari pencampuran herbisida dengan bahan aktif diuron dan hexazinon dalam mengendalikan gulma serta mengetahui sifat campuran kedua bahan aktif tersebut.  Penelitian ini dilakukan di rumah plastik Kecamatan Natar, Kabupaten Lampung Selatan dari bulan Mei hingga Juli 2022.  Penelitian disusun dalam Rancangan Acak Lengkap (RAL).  Perlakuan terdiri dari tiga jenis herbisida dengan enam tingkat dosis bahan aktif, yaitu herbisida tunggal diuron 80% WG (0, 0.25, 0.50, 1.00, 2.00, dan 4.00 kg ha-1), hexazinon 75% WG (0, 0.5, 1.0, 2.0, 4.0, and 8.0 kg ha-1), dan campuran herbisida dari diuron 46,8%  + hexazinon 13,2%  (0, 0.25, 0.50, 1.00, 2.00, and 4.00 kg ha-1).  Gulma sasaran meliputi dua jenis gulma golongan daun lebar (Ageratum conyzoides dan Asystasia gangetica), golongan rumput (Eleusine indica dan Paspalum conjugatum), serta golongan teki (Cyperus kyllingia dan Cyperus rotundus).  Herbisida diuron dan hexazinon memiliki cara kerja berbeda sehinggal metode analisis yang digunakan adalah metode Multiplicative Survival Model.  Hasil penelitian menunjukkan bahwa pencampuran herbisida diuron 46,8%  + hexazinon 13,2%  memiliki nilai LD50 harapan sebesar 69,29 g ha-1 dan LD50 perlakuan sebesar 55,77 g ha-1 dengan nilai ko-toksisitas sebesar 1,24 (ko-toksisitas > 1) sehingga campuran bersifat sinergis.
Uji Sifat Campuran Bahan Aktif Herbisida Atrazin, Nikosulfuron, Mesotrion pada Pengendalian Beberapa Jenis Gulma Sembodo, Dad Resiworo Jekti; Wati, Nana Ratna; Susanto, Herry; Sugiatno, Sugiatno
JURNAL AGROTROPIKA Vol. 23 No. 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.8689

Abstract

The aim of this research was to know effectiveness and characteristic of mixing herbicide active ingredients atrazine, mesotrion, and nikosulfuron on several weed specieses. The trial conducted in the green house at South Lampung from December 2021 until February 2022. This Research arranged in a Randomized Completely Design. Treatment consists of four types of herbicides with six level of dosage active ingredient, namely of single herbicides is atrazin 200 g/l (0, 25, 50, 100, 200, and 400 g ha-1), nikosulfuron 20 g/l (0, 2.5, 5.0, 10, 20, and 40 g ha-1), mesotrion 40 g/l (0, 5, 10, 20, 40 and 80 g ha-1), and herbicides combination of atrazine, nikosulfuron, and mesotrion 200/20/40 OD (0, 32.5, 65, 130, 260, and 520 g ha-1). The target weed were 3 type of broadleaves weeds (Ageratum conyzoides, Euphorbia hirta, and Richardia brasiliensis), 3 type of grasses weeds (Digitaria ciliaris, Eleusine indica, and Rottboellia cochinchinensis), and sedges weed (Cyperus rotundus). Multiplicative Survival Model method used in this research because atrazin, nikosulfuron, and mesotrion have different mode of action. Results showed that an active ingredient mixture of atrazin 200 g/l, nikosulfuron 20 g/l, and mesotrion 40 g/l has LD50 expectation value of 155.96 g ha-1 and LD50 treatment of 74.27 g ha-1 with the co-toxicity value was 2.10 (co-toxicity >1), it means that the characteristic oh the herbiscides mixture  is synergist or not antagonist. Keywords: herbicide mixture, atrazine, mesotrion, nikosulfuron, LD50, Multiplicative Survival Model 
Pengaruh Ekstrak Babawangan (Fimbristylis miliacea) pada Perkecambahan dan Pertumbuhan Bobontengan (Leptochloa chinensis) Nisa, Citra Khoirrun; Pujisiswanto, Hidayat; Pramono, Eko; Sembodo, Dad Resiworo Jekti
JURNAL AGROTROPIKA Vol. 23 No. 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.8702

Abstract

Chinese sprangletop (Leptochloa chinensis) reproduces sexually and vegetatively. This weed has a lot of seeds, is easy to grow, and adapts well to dry and wet land. Proper control is needed. Hoorahgrass extract can be used as an alternative to control weeds. Hoorahgrass (Fimbristylis miliacea) is a group of enigmatic weeds that contain allelochemical compounds. The aims of this research were to determine the effect of the source and concentration of hoorahgrass extract on the germination and growth of chinese sprangletop. This research carried out at the Greenhouse Integrated Field Laboratory, Faculty of Agriculture, University of Lampung from December 2022 to February 2023 using a Randomized Block Design (RAK) with 2 factors and 4 replications. The first factor was the extract component of hoorahgrass root (A1), shoot (A2) and mixture (A3), and the second factor was hoorahgrass with a concentration of 0% (B0) or (control), 2.5% (B1), 5% (B2 ), 7.5% (B3), 10% (B4). The data obtained were analyzed using analysis of variance, and first tested for homogeneity of variance using the Bartlett test, followed by the least significant difference test (LSD) at the 5% level. Based on the research results, hoorahgrass extract concentration of 5 to 10% was most effective in reducing seed germination rate, seed germination speed, chinese sprangletop root length and total dry weight. A concentration of 10% was most effective for reducing the height of chinese sprangletop. Keyword: Fimbrisylis, concentration, extract, bioherbicide, Leptochloa
EFIKASI DAN UJI SIFAT CAMPURAN HERBISIDA SAFLUFENACIL DAN TRIFLUDIMOXAZIN TERHADAP GULMA Ageratum conyzoides, Digitaria ciliaris, DAN Cyperus kyllingia Cahyani, Dwi; Sembodo, Dad Resiworo Jekti; Sriyani, Nanik; Pujisiswanto, Hidayat; Susanto, Herry
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11687

Abstract

This study aimed to evaluate the efficacy of single herbicides saflufenacil, trifludimoxazin, and their mixtures, as well as to determine the interaction characteristics of the saflufenacil and trifludimoxazin combination in weed control. The experiment was conducted in a Plastic House in Natar District, South Lampung Regency, from April to May 2025. A single-factor Randomized Block Design (RBD) was applied with 54 treatment combinations, consisting of 3 herbicide types at 6 dosage levels: single saflufenacil (0, 25, 50, 100, 200, and 400 g/ha), single trifludimoxazin (0, 12.5, 25, 50, 100, and 200 g/ha), and their mixtures (0, 37.5, 75, 150, 300, and 600 g/ha). Treatments were applied to 3 weed species: the broadleaf Ageratum conyzoides, the grass Digitaria ciliaris, and the sedge Cyperus kyllingia. Each treatment was replicated 6 times. The interaction analysis of herbicide mixtures was carried out using the Multiplicative Survival Model (MSM), since the two herbicides have different modes of action. The results showed that: (1) single saflufenacil was only effective in controlling Ageratum conyzoides at (25-400 g/ha). Single trifludimoxazin effectively controlled Ageratum conyzoides (12.5-200 g/ha), Digitaria ciliaris (200 g/ha), and Cyperus kyllingia (50-200 g/ha). The mixture of saflufenacil+trifludimoxazin effectively controlled Ageratum conyzoides (37.5-600 g/ha), Digitaria ciliaris (75-600 g/ha), and Cyperus kyllingia (300-600 g/ha). (2) With an expected LD50 value of 83.36, which was higher than the observed LD50 value of 67.33, a co-toxicity coefficient of 1.24 (>1) was obtained, indicating that the mixture exhibited a synergistic effect.
Co-Authors Dwi Cahyani Eko Pramono Herry Susanto Hidayat Pujisiswanto Nana Ratna Wati Nanik Sriyani Nisa, Citra Khoirrun Sugiatno Sugiatno