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Syofian, Mirodi
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Agriculture, Biological Sciences & Forestry

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Pengaruh Ekstrak Rimpang Alang-alang (Imperata cylindrica L.) pada Bobot Kering dan Persen Penutupan Gulma Tamin, Argi Zhafran; Supriyatdi, Dedi; Syofian, Mirodi
Jurnal Agro Industri Perkebunan Volume 5 No. 2, Oktober 2017
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/jaip.v5i2.356

Abstract

The use of herbicides has a negative impact on the environment so an environmentally friendly herbicide is needed. Alang-alang that are available in almost every area has a content of tannins in the form of allelopathy potential for weed control. The objective of the research is to know the percent of weed coverage due to the application of alang-alang bioherbicide.Concentration levels were tested in this research are: 5%, 10%, 15%, and 20%. The research was arranged in a randomized block design that has five replication. Variables observed were the dry weight of weeds and percent of weed coverage. The results of this research showed that all various concentrations have not affected in controlling weeds and percent of weed coverage. Keywords: allelopathy, bioherbicide, weed control
Pengaruh Berbagai Jenis Pupuk Organik terhadap Spesies Gulma Invasif Hutapea, Christmayaty; Syofian, Mirodi; Sudirman, Albertus
Jurnal Agro Industri Perkebunan Volume 3 No. 1, Mei 2015
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/aip.v3i1.16

Abstract

The use of organic fertilizer is very instrumental to the growth and crop production, organic fertilizer can also improve soil fertility, as well as to maintain the ecosystem in the surrounding environment. In addition to providing the advantages of using organic fertilizer also has weaknesses when refining them in the process of making organic fertilizer is not good enough, potentially toxic to human health, likely to carry germs organic fertilizers, and weed seeds. This study aims to find out the weeds that dominated after the use of organic fertilizers and proving the existence of an invasive weed borne organic fertilizer. This research was carried out on open land Lampung State Polytechnic, using cow manure treatment (MS), goat manure (MK), fertilizer pome (MP), organic fertilizer factory (MB), and control (KT). This study uses a randomized block design (RAK). The observed results are weed vegetation analysis, percent weed cover, summed Dominance Ratio (SDR), and the community coefficient (C). research shows that after the application of organic fertilizers shift the dominant weed species, proving organic fertilizer bring invasive weed, and it turns organic fertilizer from the cow shed which led to the highest weed invasion.Keywords: invasive weeds, organic fertilizer, weed species shiftsPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/16
Efikasi Kombinasi Herbisida Metil Metsulfuron dan Asam Asetat pada Lahan Perkebunan Kelapa Sawit (Elaeis gueenensis Jacq.) Menghasilkan Arbania, Iis Okta; Sudirman, Albertus; Sari, Sismita; Syofian, Mirodi
Jurnal Agro Industri Perkebunan Vol. 9 No. 1 (2021)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v9i1.1425

Abstract

One of the obstacles that resulted in a decrease in palm oil production was the presence of weeds. Weed control needs to be done to suppress weed growth. A mixture of methyl metsulfuron herbicide and acetic acid herbicide can be used to control weeds. This research was conducted in Politeknik Negeri Lampung’s Teaching Farm. This study used a factorial randomized block design with two factors, and each treatment combination was repeated three times. The first factor is the methyl metsulfuron herbicide 20% with 3 level doses: 0 g.ha-1, 45 g,ha-1, and 75 g.ha-1 and the second factor is acetic acid herbicide 20% with 3 level doses: 0 ml.ha-1, 225 l.ha-1, and 315 l.ha-1. The result showed that the combination of methyl metsulfuron herbicide 75 g.ha-1 and acetic acid herbicide 315 l.ha-1 effective reduce weed dry weight up to 5.50 grams at 5 WAA and reduce weed cover percentage to 8% at 6 WAA. The dominant weeds that arises after the application of the methyl metsulfuron herbicide and acetic acid is Asystasia gangetica, Paspalum conjugatum, Panicum dichotomiflorum, Stachytarpeta indica, and Imperata cylindrica.
Co-Authors Albertus Sudirman, Albertus Arbania, Iis Okta Hutapea, Christmayaty Sismita Sari, Sismita Supriyatdi, Dedi Tamin, Argi Zhafran