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Pertumbuhan Ludwigia octovalvis (Jacq) Revans pada Berbagai Konsentrasi dan Waktu Aplikasi Alelokimia Kulit Buah Jengkol Uswatun Nurjannah; Edhi Turmudi; Helfi Eka Saputra
Jurnal Hortikultura Indonesia Vol. 7 No. 3 (2016): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

ABSTRACTSynthetic herbicides is the most profitable option for farmers in weed control however it has detrimental effect to the environment. Using allelochemical compound as bioherbicide is one of the new options for sustainable weed management. Research was conducted to evaluate the potential of the water extract of jengkol fresh fruit pod as bioherbicide on Mexican primrose-willow (Ludwigia octovalvis) growth. The objective of the study was to determine the concentration and time of applications that effectively inhibit of the growth of Mexican primrose-willow. The study was conducted from July to September 2015 in the Greenhouse of University of Bengkulu Agronomy Laboratory with a completely randomized design, three replications and a control for comparison. The treatments tested consisted of four levels: 125 g L-1, 250 g L-1, 375 g L-1 and 500 g L-1. The results showed that at a concentration of 500 g L-1 jengkol fresh fruit pod extract applied at planting time killed Mexican primrose-willow in the first week after treatment. Inhibition of root growth was greater than that of the shoot. The mean reduction in root dry weight, shoot dry weight, root volume, and leaf area were 88.79%, 63.25%, 84.4%, and 85.75%, respectively when compared to control.Keywords: bioherbicide, concentration, growth of Mexican primrose-willow, jengkol fresh fruit pod, time applicationsABSTRAKHerbisida sintetis menjadi pilihan utama bagi petani dalam mengendalikan gulma karena sangat menguntungkan, namun merusak lingkungan. Penggunaan alelokimia sebagai bioherbisida merupakan cara baru dalam pengendalian gulma dan aman bagi lingkungan. Penelitian ini dilakukan untuk menguji potensi ekstrak air kulit buah jengkol segar sebagai bioherbisida pada pertumbuhan lakum air (Ludwigia octovalvis). Penelitian ini bertujuan untuk menentukan konsentrasi dan waktu aplikasi yang efektif menghambat pertumbuhan lakum air. Penelitian dilakukan pada bulan Mei sampai Juli 2015 di Rumah Kaca Laboratorium Agronomi Universitas Bengkulu dengan rancangan acak lengkap, 3 ulangan dan satu kontrol sebagai pembanding. Perlakuan yang diujikan terdiri dari empat aras yaitu 125 g L-1, 250 g L-1, 375 g L-1, dan 500 g L-1. Hasil penelitian menunjukkan ekstrak kulit buah jengkol segar pada konsentrasi 500 g L-1 yang diaplikasikan pada saat tanam dapat mematikan lakum air pada minggu pertama setelah perlakuan. Hambatan pertumbuhan akar lebih besar bila dibandingkan dengan tajuk. Rerata penurunan bobot kering akar, bobot kering tajuk, volume akar, dan luas daun berturut-turut 88.79%, 63.25%, 84.4%, dan 85.75% bila dibandingkan dengan kontrol.Kata kunci: bioherbisida, konsentrasi, kulit buah jengkol segar, pertumbuhan lakum air, waktu aplikasi.

ERTUMBUHAN DAN HASIL TANAMAN KACANG BOGOR PADA BERBAGAI TINGKAT KERAPATAN TANAMDAN FREKUENSI PENYIANGAN Edhi Turmudi; Eko Suprijono
Biofarm Jurnal Ilmiah Pertanian Vol 13, No 8 (2010): BIOFARM JURNAL ILMIAH PERTANIAN
Publisher : Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/biofarm.v13i8.271

Upaya pemehunan konsumsi kacang bogor melalui peningkatan produksi dihadapkan pada permasalahan gangguan gulma yang dapat diatasi dengan pengaturan kerapatan tanaman dan penyiangan. Penelitian bertujuan untuk mendapatkan frekuensi penyiangan pada setiap kerapatan tanaman kacang bogor yang pertumbuhan dan hasilnya tertinggi. Pelaksanaannya dengan menguji dua macam perlakuan yaitu tingkat kerapatan tanaman yang terdiri atas tiga taraf dan frekuensi penyiangan terdiri atas empat taraf disusun secara faktorial dengan Rancangan Acak Kelompok Lengkap (RAKL) yang dilakukan dalam bentuk percobaan lapangan. Penyiangan dua kali secara nyata meningkatkan pertumbuhan dan hasil kacang bogor. Hasil biji kering per petak tertinggi sebesar 1559,37 g lebih dari tanpa penyiangan. Indeks luas daun, jumlah daun, biomassa tanaman, jumlah polong muda, dan jumlah polong pertanaman tertinggi pada kerapatan tanaman 150.000 per hektar.Keta kunci : Kacang bogor, penyiangan

ERTUMBUHAN DAN HASIL TANAMAN KACANG BOGOR PADA BERBAGAI TINGKAT KERAPATAN TANAMDAN FREKUENSI PENYIANGAN Edhi Turmudi; Eko Suprijono
Biofarm Jurnal Ilmiah Pertanian Vol 13, No 8 (2010): BIOFARM JURNAL ILMIAH PERTANIAN
Publisher : Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/biofarm.v13i8.272

Upaya pemehunan konsumsi kacang bogor melalui peningkatan produksi dihadapkan pada permasalahan gangguan gulma yang dapat diatasi dengan pengaturan kerapatan tanaman dan penyiangan. Penelitian bertujuan untuk mendapatkan frekuensi penyiangan pada setiap kerapatan tanaman kacang bogor yang pertumbuhan dan hasilnya tertinggi. Pelaksanaannya dengan menguji dua macam perlakuan yaitu tingkat kerapatan tanaman yang terdiri atas tiga taraf dan frekuensi penyiangan terdiri atas empat taraf disusun secara faktorial dengan Rancangan Acak Kelompok Lengkap (RAKL) yang dilakukan dalam bentuk percobaan lapangan. Penyiangan dua kali secara nyata meningkatkan pertumbuhan dan hasil kacang bogor. Hasil biji kering per petak tertinggi sebesar 1559,37 g lebih dari tanpa penyiangan. Indeks luas daun, jumlah daun, biomassa tanaman, jumlah polong muda, dan jumlah polong pertanaman tertinggi pada kerapatan tanaman 150.000 per hektar.Keta kunci : Kacang bogor, penyiangan

RESPON PERTUMBUHAN DAN HASIL TANAMAN SORGUM (Shorgum bicolor) TERHADAP FREKUENSI DAN DOSIS PUPUK NITROGEN Edhi Turmudi
Biofarm Jurnal Ilmiah Pertanian Vol 13, No 9 (2010): BIOFARM JURNAL ILMIAH PERTANIAN
Publisher : Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/biofarm.v13i9.274

Produksi sorghum sebagai bahan pangan alternative perlu ditingkatkan untuk memenuhi kebutuhan pangan. Masalah yang harus dipecahkan adalah perbaikan teknik budidaya terutama pemupukan dan pengendalian gulma. Penelitian ini bertujuan untuk menentukan dosis optimal pupuk N pada berbagai frekuensi penyiangan. Penelitian untuk menguji empat taraf dosis pupuk Nitrogen pada tiga taraf frekuensi penyiangan dilaksanakan dalam bentuk percobaan lapangan dengan rancangan acak kelompok lengkap yang disusun secar faktorial. Hasil penelitian ini menunjukan dosis pupuk optimal bagi tanaman sorgum adalah 147,56 kg N ha-1pada frekuensi penyiangan dua kali dengan bobot biji kering tertinggi sebesar 2378,7 gram per petak atau serata dengan 3 ton per hektar. Kata Kunci : sorgum, pupuk N, penyiangan.

Land Utilization Efficiency of Corn and Black Soybean Intercropping System on Ultisoll with Various Doses of Cow Dung Fertilizer and Weeding Frequency Anisha, Sukma Dwi Nur; Turmudi, Edhi; Chozin, Mohammad
TERRA : Journal of Land Restoration Vol. 7 No. 2 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.2.92-102

The narrow land ownership status among farmers poses challenges for agricultural production, despite the increasing demand for agricultural products in both quantity and variety. To address this issue, intercropping—a planting system that involves cultivating multiple crop types simultaneously—has been employed. This system enhances land productivity, reduces farming risks, and ensures income sustainability for farmers. Corn and black soybeans are ideal crops for intercropping due to their mutually beneficial interactions. Key factors influencing the success of this system include the frequency of weeding and the application of cow dung fertilizer. This study aimed to identify the optimal dose of cow dung fertilizer and weeding frequency to achieve the highest crop yield and land use efficiency in a corn-black soybean intercropping system. Conducted from February to May 2021 in Pematang Gubernur Village, Bengkulu City, the experiment employed a Split Plot Design within a Complete Randomized Block Design (RCBD) with two factors and three replications. The main plot consisted of three weeding frequencies: no weeding, weeding once (2 WAP), and weeding twice (2 and 5 WAP). Subplots included cow dung fertilizer doses: 0, 5, 10, and 15 tons ha-1. Results indicated the highest sunlight utilization efficiency occurred with 2x weeding and 5–10 tons ha-1 of cow dung fertilizer. Land use efficiency (LER > 1) was achieved under these conditions, while black soybean generally exhibited lower light efficiency. These findings highlight the importance of proper weeding and fertilization practices to optimize land use, providing valuable insights for sustainable farming strategies in regions with limited arable land.

Peningkatan Adaptibilitas Gembili (Dioscorea esculenta L.) pada Lahan Pesisir dengan Penambahan Pupuk Amonium Sulfat (ZA) dan Mulsa Organik Herison, Catur; Turmudi, Edhi; Handayaningsih, Merakati; Dewi, Kurnia Herlina
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Increasing plant capability to adapt on coastal land is very important aspect in the development alternative carbohydrate source food. The objective of this research is to determine the effect of ZA fertilizer and organic mulch on lesser yam’s adaptability based on its growth and yield. The experiment was conducted with a randomized completely block design arranged in a split plot with 3 replications. As the Main Plot were organic mulch levels, and as the Sub Plot were ZA fertilizer doses. The results showed that there was no interaction effect between ZA fertilizer and organic mulch on either growth or yield of lesser yam. Application of ZA fertilizer up to 200 kg ha improve lesser yam’s adaptability based on their vegetative growth. Organic mulch of rice paddy straw up to the rate of 20 ton ha-1 did not increase growth and yield of lesser yam in coastal sandy land.

Penentuan Kadar Garam Kultur Hara untuk Seleksi Toleransi Salinitas pada Padi Lokal Bengkulu Rustikawati, Rustikawati; Simarmata, Marulak; Turmudi, Edhi; Herison, Catur
Akta Agrosia Vol 17 No 2 (2014)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Bengkulu province area elevating from 0 m to over 1000 m above sea level possesses high rice germplasm diversity. To obtain salinity controlling gene(s) from those germplasm, it is required to determine a suitableprotocol. This research was objected to determine NaCl concentration to select Bengkulu rice landraces. The standard most salinity tolerant genotype used in this research was ’Kuning’, a local variety usually grown on tidal area of Seluma Regency for generations. The growing media was Yoshida nutrient culture supplemented with a series of NaCl concentration of 0, 2000, 4000, 6000, 8000 or 10000 ppm. Observation was done every 2 days to find out the response pattern of rice seedling growth on different NaCl concentration. NaCl stress level was determined at 90% seedling dead (LC90) at the eighth day. The results showed that the increase of plantheight was deceased at concentration of 6000 ppm. Based on the mathematical equation generated from the percent mortality data distribution, the LC90 was at 3910 ppm NaCl concentration.

Growth and Yield Response of Bambara Groundnuts (Vigna subterranea L ) to the Mixed of Peat and Mineral Soil with Several Dosage of Dolomite Pamungkas, Inggi; Turmudi, Edhi; Hindarto, Kanang Setyo
Akta Agrosia Vol 20 No 2 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Bambara groundnut (Bogor groundnut) was an alternative food crops having high nourishing, better taste and bigger size nut than the soy beans and peanuts. To meet the need for food and industrial needs, the program to increase production of Bogor groundnut was required, one of which is the use of peat as a growing medium using the technology of mixing peat and mineral soil. The research objective was to obtain a mixture of peat with mineral soil and dolomite lime dose suitable for the highest growth and yield of Bogor groundnut. This study was conducted in May 2015-September 2015 in the Greenhouses of Faculty of Agriculture, University of Bengkulu. The experiment was arranged in a completely slot deposit 5000 randomized design (CRD) with two treatment factors and three replications. The first factor was soil mix of peat and mineral soil (G0: 100% peat + 0% mineral soil; G1: 75% peat + 25% mineral soil; G2: 50% peat + 50% mineral soil; G3: 25% peat + 75% mineral soil) and the second factor was the dose of dolomite (D0: without lime dolomite; D1: 3 ton ha-1 and D2: 4 ton ha-1). The results showed that the response of biomass dry-weight to a mixture of peat with mineral soil was influenced by the dose of dolomite, but there was no interaction on other variables. Treatment of a mixture of peat 100% alone was capable of generating the highest number of leaf, biomass fresh- and dry-weight. Bogor groundnut plants showed the same response to the dose variation of dolomite lime. Keywords: Bogor groundnut, peat, mineral, dolomite

Pengaruh Kepadatan Populasi terhadap Pertumbuhan dan Hasil Blewah (Cucumis melo L. var. Cantalupensis) Rajagukguk, Natalia; Turmudi, Edhi; Handajaningsih, Merakati
Akta Agrosia Vol 20 No 1 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Blewah (C. melo var. Cantalupensis) is one specific type of melon with fresh and fragrance arome when the fruit is ripe. Mostly the plant is grown in Java island of Indonesia. There is no research-based information about technique of cultivationof this plant, so this experiment was done to study population density to determine the optimal spacing for growth and yield of blewah. The experiment has been implemented from February 2016 until May 2016 in the experimental field of the University of Bengkulu. This study used a complete Randomized Complete Block Design with different population density treatments i.e.: plant density of 4 plants per plot of 10 m2 (plant spacing 100 cm x 250 cm); plant density of 6 plants per plot, (plant spacing 100 cm x 166 cm); plant density of 8 crops per plot (spacing of 100 cm x 120 cm); plant density of 10 plants per plot (plant spacing 100cm x 100 cm); plant density of 12 plants per plot (plant spacing 100 cm x 83 cm); plant density of 14 plants per plot (plant spacing 100 cm x 72 cm); and plant density of 16 plants per plot (plant spacing 100cm x 62 cm). Each treatment was repeated 3 times. The experiment showed that the optimal spacing for growing blewah was at population density 12 plants/10 m2 or 12,000 plant/ha, plant spacing 100 cm x 83 cm. This arrangement of plant yielded the length of plant, the number of branches, the diameter of the fruit, the plant dry weight, the weight of the fruit per plot, and fruit thickness of 224.47 cm, 3.67, 9.61 cm, 22.15 g, 7044.80 g, and 2.21 cm respectively.Keywords: blewah, Cucumis melo var. Cantalupensis, growth, plant density, yield

Pertumbuhan Vegetatif Talas Satoimo dan Kultivar Lokal pada Dosis Pupuk Nitrogen yang Berbeda Yulian, Yulian; Turmudi, Edhi; Hindarto, Kanang S.; Bustamam, Hendri; Hutajulu, Juwita Noventina
Akta Agrosia Vol 19 No 2 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Taro (Colocasia esculenta L. Schott) is a plant that has an excellent economic and healthy value, as well as a great potential development of Bengkulu coastal area. That is because taro has wide adaptability, and can be consumed both as a staple food and healthy food alternative. This research was conducted to study the vegetative growth of two cultivars of taro given four different doses of nitrogen. This study applied a Randomized Complete Block Design (RCBD) with two factors. The first factor was the cultivar of taro consisted of two levels, namely Taro Satoimo (T1) and the Taro Local (T2). The second factor was the doses of nitrogen fertilizer which consisted of four levels namely: N0 = 0 kg / ha (control), N1 = 50 kg / ha (2.6 g, N2 = 100 kg / ha, and N3 = 150 kg / ha. Thus, obtained eight treatment combinations. Each treatment was repeated three times to get 24 plots. The results showed that based on increased vegetative growth, the cultivar Satoimo has a faster response than local cultivar. Satoimo has demonstrated another advantage because it produced some leaves and number new shoot. The best dose of nitrogen fertilizer on the vegetative growth of taro in the coastal area of Bengkulu is 150 kg/ha.

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