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Kultivasi
Published by Universitas Padjadjaran
ISSN : 14124718     EISSN : 2581138X     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Kultivasi diterbitkan oleh Departemen Budidaya Pertanian, Fakultas Pertanian, Universitas Padjadjaran. Jurnal ini terbit tiga kali dalam setahun, yaitu pada bulan Maret, Agustus, dan Desember. Kultivasi mempublikasikan hasil penelitian dan pemaparan ilmiah dari para dosen dan peneliti di bidang budidaya tanaman. Bidang kajian yang dipublikasikan jurnal ini diantaranya adalah agronomi, pemuliaan tanaman, ilmu gulma, teknologi benih, teknologi pasca panen, ilmu tanah, dan proteksi tanaman.
Arjuna Subject : -
Articles 495 Documents
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Teknik fermentasi campuran bahan organik sebagai sumber nutrisi organik pada sayuran sawi yang ditanam dengan hidroponik Darwin H. Pangaribuan; Yohannes Cahya Ginting; Rugayah Rugayah; Purba Sanjaya; Agus Karyanto; Kurnia Cahyani Dewi; Intan Puspita Sari
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.38509

Abstract

AbstrakNutrisi organik untuk budidaya sistem sumbu hidroponik merupakan salah satu alternatif untuk mengatasi kendala mahalnya harga pupuk anorganik. Penelitian ini bertujuan untuk mengetahui metode ekstraksi terbaik antara metode air hangat, air dingin, dan fermentasi kemudian menentukan waktu fermentasi terbaik dari unsur hara organik campuran rumput laut, sabut kelapa dan daun kelor yang diharapkan memiliki kandungan nutrisi organik yang mendekati dengan formula nutrisi anorganik. Penelitian ini terdiri atas 2 percobaan: (i) percobaan pertama meneliti jenis metode ekstraksi, dan (ii) percobaan kedua meneliti waktu fermentasi terbaik. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan faktor tunggal dan diulang sebanyak 6 kali. Hasil penelitian ini menunjukkan bahwa unsur hara organik yang dicampur dengan rumput laut, sabut kelapa dan daun kelor belum mampu menyamai unsur hara campuran AB Mix pada budidaya tanaman sawi secara hidroponik. Bobot segar tanaman sawi pada sub percobaan metode ekstraksi menunjukkan bahwa metode fermentasi menghasilkan 11,28 g atau 52,22% dari bobot segar tanaman hasil perlakuan nutrisi AB Mix yang mencapai 21,60 g. Bobot segar tanaman sawi pada sub percobaan waktu fermentasi menunjukkan bahwa fermentasi 20 hari menghasilkan 1,83 g atau 50,8% dari bobot segar tanaman hasil perlakuan hara AB Mix yang mencapai 3,60 g. Waktu fermentasi terbaik diperoleh pada 20 hari fermentasi.Kata Kunci: anorganik, bahan segar, metode ekstraksi, waktu fermentasi Abstract Organic nutrition for the wick hydroponic system is an alternative solution to overcome the high cost of inorganic fertilizers. This study aims to determine the best extraction method between warm water, cold water, and fermentation, then determine the best fermentation time from the organic nutrient mixture of seaweed, coconut husk and Moringa leaves which are expected to have the same organic nutrient content as the inorganic nutrition formula. This study consisted of 2 experiments, the first experiment examined the type of extraction method and the second experiment examined the best fermentation time. The experimental design used was a randomized block design (RBD) with a single factor and was repeated 6 times. The results of this study indicate that the organic nutrients mixed with seaweed, coconut husk and Moringa leaves have not been able to equal to the AB-mix nutrients in hydroponic mustard cultivation. Fresh weight of mustard in the extraction method sub-experiment showed that the fermentation method was only able to produce 11.28 g or 52.22% of the fresh weight of plants produced by AB Mix nutrition which reached 21.60 g. Fresh weight of mustard plants in the sub-experiment of fermentation time showed that 20 days of fermentation was only able to produce 1.83 g or 50.8% of the fresh weight of plants treated with AB Mix nutrients which reached 3.60 g. The best fermentation time was obtained at 20 fermentation days.Keywords:  inorganic, fresh weight, extraction method, fermentation time
Studi pendahuluan regenerasi eksplan teh sebagai upaya percepatan penyediaan bibit unggul secara in vitro Intan Ratna Dewi Anjarsari; Erni Suminar; Murgayanti Murgayanti
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.36607

Abstract

ABSTRAKPembiakan generatif tanaman teh yang dilakukan dengan biji, sementara secara vegetatif dengan setek tunas yang  mempunyai kelemahan, antara lain jumlah bibit yang dihasilkan terbatas, perlu waktu lama untuk menyeleksi pohon induk, dan bibit yang dihasilkan kurang optimal dalam penyerapan air dan unsur hara karena perakarannya dangkal sehingga kurang toleran terhadap kekeringan. Kultur jaringan menjadi salah satu alternatif dalam perbanyakan teh memperoleh klon teh unggul, seperti klon Seri Gambung 1-11, dalam jumlah banyak dan sifatnya yang seragam. Penelitian pendahuluan ini dilaksanakan di Laboratorium Kultur Jaringan Departemen Budidaya Pertanian Fakultas Pertanian UNPAD, mulai bulan Juni hingga Desember 2021. Penelitian terdiri dari dua tahap, yaitu (i) metode deskriptif untuk menginduksi eksplan organ teh (pucuk + ruas batang serta daun), dan (ii) metode eksperimen dengan menguji eksplan yang ditumbuhkan pada berbagai media. Metode percobaan yang digunakan untuk penelitian ke-2 adalah rancangan acak lengkap (RAL) dengan 6 kombinasi perlakuan Benzyl Amino Purine (BAP) (0 dan 0,5 ppm) dan 2,4-D (0,05; 0,1; dan 0,2 ppm). Hasil pengamatan pendahuluan menunjukkan masih banyak eksplan yang mengalami kematian, namun beberapa eksplan potongan daun menunjukkan respon yang baik dengan mampu membentuk kalus berwarna hijau. Kombinasi 0,5 ppm BAP + 0,05 ppm 2,4-D memberikan pengaruh lebih baik terhadap bobot kalus, sedangkan kombinasi 0,5 ppm BAP + 0,2 ppm 2,4D memberikan pengaruh baik terhadap diameter kalus.Kata kunci: eksplan teh, in vitro, klon unggul ABSTRACTGenerative propagation of tea plants is done by seed, while the vegetative method is by shoot cuttings which have weaknesses, including the limited number of seedlings produced, it takes a long time to select the mother tree, and the resulting seedlings are not optimal in absorbing water and nutrients because their roots are shallow making it less tolerant of drought. Tissue culture is an alternative in tea propagation to obtain superior tea clones, such as the Gambung Series 1-11 clones, in large quantities and with uniform characteristics. This preliminary research was carried out at the Tissue Culture Laboratory of the Department of Agronomy, Faculty of Agriculture, UNPAD, from June to December 2021. The research consisted of two stages, namely (i) a descriptive method to induce tea organ explants (shoots + stem segments and leaves), and (ii) an experimental method by testing explants grown on various media. The experimental method used for the second study was a completely randomized design (CRD) with 6 treatment combinations of Benzyl Amino Purine (BAP) (0 and 0.5 ppm) and 2.4 D (0.05; 0.1; and 0 .2 ppm). Preliminary observations showed that there were still many death explants observed, however, some explants in form of cut leaves showed a good response by being able to form green callus. The combination of 0.5 ppm BAP + 0.05 ppm 2.4 D had a better effect on callus weight, while the combination 0.5 ppm BAP + 0.2 ppm 2.4D had a good effect on callus diameter.Keywords: tea explants, in vitro, superior clones
Application of organic fertilizer and phosphate solubilizing bacteria to increase the growth and yield of potatoes in Andisol Agustina Erlinda Marpaung; Bina Karo; Susilawati Barus; Rina Christina Hutabarat; Rasiska Tarigan
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.41485

Abstract

AbstractAndisol has low phosphate (P) nutrient content due to high P fixation by allophane minerals, which affects crop production. The application of organic fertilizers and phosphate solubilizing bacteria can increase the availability of P in the soil in order to increase the production of potato plants. This study aimed to evaluate the effect of different types of organic fertilizer and phosphate solubilizing bacteria (PSB) on potato production. The research was conducted from August to November 2020 in the installation of research and assessment of agricultural technology Berastagi, Karo Regency, with an altitude of ± 1,340 m above sea level and the soil order is Andisol. The experimental design used a factorial randomized completely block design with four replications. The first factor was a different type of organic fertilizer (liquid organic fertilizer and chicken manure) and the second factor was a different type of phosphate solubilizing bacteria (PSB) {without PSB (control), Bacillus cereus, Bacillus pseudomycoides, and Bacillus amyloliquefaciens}. Results showed that chicken manure was able to increase the growth and yield of potatoes per plot. Phosphate solubilizing bacteria B. pseudomycoides could increase potato yields. The interaction of chicken manure and B. pseudomycoides was able to increase potato yield by 33.79% - 56.24% and the percentage of big tubers to 32.60% - 70.23% and decrease the grade of small tubers to 43.61% - 72.32% compared to without PSB. Phosphate solubilizing bacteria Bacillus pseudomycoides and chicken manure fertilization had the potential to be applied for increasing potato production in Andisol.Keywords: Bacillus sp, organic fertilizer, Solanum tuberosum AbstrakAndisol memiliki kandungan hara P yang rendah karena fiksasi P yang tinggi oleh mineral alofan, yang mempengaruhi produksi tanaman. Aplikasi pupuk organik dan bakteri pelarut fosfat dapat meningkatkan ketersediaan P dalam tanah untuk meningkatkan produksi tanaman kentang. Penelitian ini bertujuan untuk mendapatkan jenis pupuk organik dan bakteri pelarut fosfat (BPF) terbaik untuk meningkatkan produksi kentang pada andisol. Penelitian dilaksanakan pada bulan Agustus sampai dengan November 2020 di Instalasi Penelitian dan Pengkajian Teknologi Pertanian Berastagi Kabupaten Karo dengan ketinggian tempat ± 1.340 m dpl dan ordo tanah Andisol. Rancangan yang digunakan adalah rancangan acak kelompok faktorial dengan empat ulangan. Perlakuan yang diteliti adalah pertama jenis pupuk organik (pupuk organik cair dan kotoran ayam) dan faktor kedua jenis bakteri pelarut fosfat (PSB) {tanpa BPF (kontrol), Bacillus cereus, Bacillus pseudomycoides, dan Bacillus amyloliquefaciens}. Hasil penelitian menunjukkan bahwa jenis pupuk organik kandang ayam mampu meningkatkan pertumbuhan dan hasil tanaman kentang. Bakteri pelarut fosfat B. pseudomycoides dapat meningkatkan hasil kentang per plot. Interaksi pupuk organik kotoran ayam dan bakteri pelarut fosfat B. pseudomycoides mampu meningkatkan hasil kentang sebesar 33,81% - 56,26% dan persentase umbi besar 32,60% - 70,23% dan menurunkan persentase umbi kecil 43,61% - 72,32% dari tanpa BPF.Kata kunci: Bacillus sp, pupuk organik, Solanum tuberosum
Aplikasi kalium klorida pada dosis yang berbeda secara fertigasi tetes untuk meningkatkan pertumbuhan dan hasil bawang merah Alfu Laila; Nur Iman Muztahidin; Dwiki Radinal; Andi Apriany Fatmawaty; Nuniek Hermita
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.38434

Abstract

AbstrakBudidaya bawang merah (Allium cepa L.) di Provinsi Banten terhambat oleh masalah kekurangan air karena diusahakan di lahan kering. Oleh karena hal tersebut, kami mengevaluasi pengaruh pemberian kalium klorida (KCl) melalui fertigasi tetes untuk efisiensi penggunaan air dan nutrisi pada budidaya bawang merah di lahan kering Banten. Penelitian polybag dilaksanakan dengan rancangan acak kelompok lengkap (RAKL) dengan 4 ulangan sebagai blok. Perlakuan terdiri dari dosis KCl dengan system fertigasi tetes yakni 50, 75, 100, 125 dan 150% dari dosis rekomendasi KCl untuk Provinsi Banten dan aplikasi KCl dengan sistem irigasi konvensional sesuai dosis rekomendasi sebagai kontrol. Hasil penelitian menunjukkan bahwa tinggi tanaman bervariasi pada berbagai perlakuan pada pengamatan 6 dan 8 minggu setelah tanam (mst). Tinggi tanaman maksimal mencapai 49,4 cm pada perlakuan fertigasi tetes dengan dosis KCl 75% pada umur 6 mst dan 43,5 cm pada umur 8 mst. Jumlah daun pada umur 6 mst juga menunjukkan adanya variasi pada berbagai perlakuan. Jumlah daun terbanyak mencapai 23,1 helai yang ditunjukkan pada perlakuan fertigasi tetes dengan dosis KCl 75%. Namun, pada pengamatan kehijauan daun tidak menunjukkan beda nyata antar perlakuan. Hasil panen menunjukkan bahwa perlakauan fertigasi tetes pada dosis KCl 75% menunjukkan jumlah umbi per tanaman paling banyak (9,3 umbi per tanaman) dan bobot tumbi tertinggi (38,95 gram per tanaman). Dari hal tersebut menunjukkan bahwa aplikasi fertigasi tetes dapat mengurangi 25% dosis rekomendasi KCl dibandingkan dengan sistem konvensional.Kata Kunci: KCl, dosis, sistem irigasi, umbi, penelitian polibag AbstractShallot (Allium cepa L.) cropping in the Province of Banten has been impeded by water deficit problem due to it is occupying dry land areas. Therefore, we evaluated the effect of different potassium chloride doses under drip fertigation to increase the growth and yield of shallot in the dry land area of Banten. Potted research was laid out in a Randomized Completely Block Design (RCBD) with four replications as blocks. The treatment consisted of 50, 75, 100, 125, and 150% basal dose recommendation of potassium chloride under a drip fertigation system and 100% basal dose recommendation of potassium chloride under a conventional irrigation system as a control. The result revealed that plant height varied significantly due to the various level of potassium chloride at 6 and 8 weeks after planting (wap). Plant height was maximum at 75% basal dose recommendation of potassium chloride using drip fertigation at 6 wap (49.4 cm) and 8 wap (43.5 cm). In addition, there was significant differences in the number of leaves at 6 wap (23.1 leaves per plant). In contrast, there was no differences in leaf greenness among treatments. At harvest, the number of bulbs was maximum at 75% basal dose recommendation of potassium chloride using drip fertigation (9.3 bulbs per plant). Moreover, the heaviest bulbs weight was obtained in the 75% basal dose recommendation of potassium chloride using drip fertigation (38.95 grams per plant). Hence, drip fertigation application significantly reduced the 25% potassium basal dose recommendation compared to the conventional system.Keywords: KCl, dose, irrigation system, bulb, potted research
Potential use of PGPR based biofertilizer for improving the nutrient availability in soil and agronomic efficiency of upland rice Rahma Tia Harahap; Diyan Herdiyantoro; Mieke Rochimi Setiawati; Isna Niar Rahmatul Azizah; Tualar Simarmata
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.40061

Abstract

AbstractPresent study aimed to perform literature review to investigate the current status and potential use of plant growth promoting rhizobacteria (PGPR) for enhancing the soil plant’s health, plant growth and productivity in sustainable ways. The Systematic Literature Review (SLR) methods was applied according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) on published scientific literature from 2012-2022. Results revealed that genus diversity of PGPR (Bacillus sp., Serratia sp., Streptomyces sp., Pseudomonas sp., and Burkholderia sp.) produce siderophore and phytohormones such as indole-3-acetic acid (IAA), gibberellin (GAs), auxin, and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, organic acids, biocontrol agent that contribute to the improvement of nutrient bioavailability (nitrogen fixing, phosphate solubilizing and Fe-uptake). The growth character of rice inoculated with biofertilizer and combined with 50% inorganic fertilizer produced no significant difference with pots that received 100% inorganic fertilizer. These results concluded that PGPR that produced phytohormone and siderophore could be developed as a potential bioagent or biofertilizer to improve the growth character and yield of upland rice (Oryza sativa L.) in dry environmental conditions.Keywords: PGPR producing phytohormone and siderophore, N2-fixer, Biofertilizer, Systematic review AbstrakKajian tinjauan pustaka ini dilakukan untuk menyelidiki status saat ini dan potensi penggunaan rizobakteri pemacu pertumbuhan tanaman (PGPR) untuk meningkatkan kesehatan tanah, pertumbuhan tanaman, dan produktivitas secara berkelanjutan. Metode Systematic Literature Review (SLR) diterapkan sesuai dengan Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) pada literatur ilmiah yang diterbitkan dari 2012-2022. Mesin pencari Google Scholar dan ScienceDirect dengan kata kunci yang tepat digunakan untuk memilih dan mengumpulkan jurnal ilmiah yang terindeks bereputasi dan digunakan sebagai referensi utama database. Hasil penelitian menunjukkan bahwa keragaman genus PGPR (Bacillus sp., Serratia sp., Streptomyces sp., Pseudomonas sp., dan Burkholderia sp.) menghasilkan siderophore dan memproduksi phytohormon seperti indole-3-acetic acid (IAA), giberelin (GAs), auksin, dan 1-aminocyclopropane-1-carboxylic acid (ACC) aktivitas deaminase, asam organik, agen biokontrol yang berkontribusi pada peningkatan bioavailabilitas nutrisi (pengikatan nitrogen, pelarutan fosfat, dan penyerapan Fe). Karakter tumbuh padi yang diinokulasi pupuk hayati dan dikombinasikan dengan pupuk kimia dosis 50% menghasilkan perbedaan yang tidak nyata dengan pot yang menerima pupuk anorganik 100%. Hasil ini menyimpulkan bahwa PGPR penghasil pitohormon dan siderophore dapat dikembangkan sebagai bioagent atau pupuk hayati yang potensial untuk meningkatkan karakter tumbuh dan hasil padi (Oryza sativa L.) gogo pada kondisi lingkungan yang kering.Keywords: PGPR produksi fitohormon dan siderofor, penambat-N2-fixer, biofertilizer, Systematic review
Respons komponen hasil dan hasil varietas padi berprotein tinggi terhadap pemberian dosis pupuk nitrogen Agus Riyanto; Dyah Susanti; Totok Agung Dwi Haryanto
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.38700

Abstract

AbstrakInpago Unsoed Protani dan Inpari Unsoed P20Tangguh adalah padi (Oryza sativa L.) daya hasil tinggi yang memiliki kandungan protein beras tinggi yang pertumbuhannya dipengaruhi oleh pemupukan nitrogen.  Tujuan penelitian ini adalah mengetahui respons komponen hasil dan hasil padi protein tinggi terhadap pupuk nitrogen dan memperoleh dosis optimal pupuk nitrogen untuk varietas Inpago Unsoed Protani dan Inpari Unsoed P20Tangguh. Percobaan dirancang dengan RAK pola faktorial dwi faktor yang diulang tiga kali. Faktor pertama adalah dosis pupuk N yaitu: 0 kg N ha-1, 46 kg N ha-1, 92 kg N ha-1, dan 138 kg N ha-1. Faktor kedua adalah genotipe padi yaitu Inpago Unsoed Protani, Inpari Unsoed P20Tangguh, dan Inpago Unsoed 1. Hasil penelitian menunjukkan nilai komponen hasil meningkat seiring dengan penambahan dosis pupuk nitrogen. Respons daya hasil terhadap dosis pupuk nitrogen varietas Inpago Unsoed Protani dan Inpari Unsoed P20Tangguh lebih baik dari Inpago Unsoed 1.  Dosis pupuk nitrogen yang optimum untuk Inpago Unsoed Protani adalah 94 kg N ha-1 dan untuk Inpago Unsoed P20Tangguh adalah 86 kg N ha-1.Kata Kunci: Daya hasil, Nitrogen, Padi, ProteinAbstractInpago Unsoed Protani and Inpari Unsoed P20Tangguh are high-yielding rice (Oryza sativa L.) varieties with high protein content, whose growth is affected by the nitogen fertilizer. The objectives of this study were i.e., (i) to determine the response of yield components and yield of high protein rice varieties to nitrogen fertilizers and (ii). to obtain optimal doses of nitrogen fertilizers for the Inpago Unsoed Protani and Inpari Unsoed P20Tangguh varieties. The experiment was arranged in the randomized completely block design, with two factors and replicated three times. The first factor was the dose of N fertilizer, i.e., 0 kg N ha-1, 46 kg N ha-1, 92 kg N ha-1, and 138 kg N ha-1. The second factor was rice variety , i.e., Inpago Unsoed Protani, Inpari Unsoed P20Tangguh, and Inpago Unsoed 1. The results showed that the yield component values increased with the addition of nitrogen fertilizer doses. Yield response to nitrogen fertilizer of Inpago Unsoed Protani and Inpari Unsoed P20Tangguh was better than Inpago Unsoed 1. The optimum dose of nitrogen fertilizer was 94 kg N  ha-1 for Inpago Unsoed Protani and 86 kg N ha-1 for Inpago Unsoed P20Tangguh.Keywords: Nitrogen, Protein, Rice, Yield
Respon pertumbuhan tanaman krisan pot terhadap hormon giberelin dan waktu pemangkasan yang berbeda Galuh Wulan Andini; Refa Firgiyanto
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.37187

Abstract

AbstrakSalah satu teknologi yang dapat digunakan untuk meningkatkan kualitas tanaman krisan (Dendrathema grandifloria) pot yaitu dengan pemberian giberelin dan pengaturan waktu pemangkasan. Tujuan pemberian giberelin dan pengaturan waktu pemangkasan adalah untuk memacu pertumbuhan dengan merangsang perpanjangan batang serta memunculkan tunas lateral sehingga memperbanyak percabangan yang akhirnya dapat menghasilkan banyak kuntum bunga. Penelitian ini bertujuan untuk mendapatkan konsentrasi giberelin dan waktu pemangkasan yang terbaik. Penelitian dilaksanakan pada 3 Juli sampai 4 September 2020 di Greenhouse Rembangan, Desa Kemuning Lor, Kecamatan Arjasa, Jember. Rancangan percobaan yang digunakan pada penelitian ini adalah Rancangan Acak Kelompok (RAK) Faktorial dengan 2 faktor yang diulang 3 kali. Faktor pertama adalah hormon giberelin yang terdiri dari 4 taraf, yakni 0 ppm, 10 ppm, 20 ppm, dan 30 ppm. Faktor kedua adalah pemangkasan yang terdiri dari pemangkasan saat pindah tanam, pemangkasan 1 MST, dan pemangkasan 2 MST. Analisis statistik menggunakan uji F yang dilanjutkan dengan uji Duncan Multiple Range Test (DMRT) pada taraf nyata 5%. Hasil penelitian menunjukkan pemberian ZPT giberelin belum mampu meningkatkan pertumbuhan tanaman krisan pot. Pemangkasan berpengaruh nyata pada tinggi tanaman fase vegetatif dan generatif, jumlah knop, dan jumlah bunga mekar dengan waktu terbaik pemangkasan pada saat pindah tanam.Kata Kunci: Giberelin, Pemangkasan, Krisan Pot Abstract One of the technologies that can be used to improve the quality of potted chrysanthemum (Dendrathema grandifloria)  is gibberellins application and pruning time regulation. The purpose of giving gibberellins and pruning time regulation is to increase growth by stimulating stem elongation and bringing out lateral shoots to increase branching, therevy producing lots of flower buds. The aim of this study was to obtain the best gibberellin concentration and pruning time. The research was conducted from 3 July to 4 September 2020 at the screenhouse at Rembangan, Kemuning Lor Village, Arjasa Sub-district, Jember. The experiment design used in this study was a factorial randomized block design with 2 factors that repeated 3 times. The first factor was gibberellin  hormone which consisted of 4 levels, 0 ppm (G0), 10 ppm (G1), 20 ppm (G2), 30 ppm (G3). The second factor was pruning which consisted of pruning at transplanting (P0), pruning 1 MST (P1), pruning 2 MST (P2). Statistical analysis used the F test followed by the Duncan Multiple Range Test (DMRT) at 5% significance level. The results showed that gibberellin treatment was not able to increase the growth of potted chrysanthemum. Pruning treatment had a significant effect on vegetative plant height, generative plant height, total knobs, and number of blooming flowers with the best pruning time at transplanting.Keywords: Giberelin, Pruning, Potted Chrysanthemum 
Application of legume cover crop and various vermicompost dosages on young cinchona in the marginal area Yudithia Maxiselly; Mira Ariyanti; Mochamad Arief Soleh; Naufal Fikri
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.41634

Abstract

AbstractCinchona (Cinchona ledgeriana Moens) is one of the important medicinal plants that have the potential to cultivate as herbal medicine. This plant grows well in highland areas. Developing cinchona plants in the marginal area needs effort and modification techniques such as planting legume cover crop (LCC) to maintain the humidity and supply nutrition by fertilizing. Vermicompost is one of the organic fertilizers with rich nutrition to support plant growth. This research aimed to observe the effect of a combination of Mucuna bracteata as LCC and vermicompost dosage on young cinchona growth in a marginal area. This research was carried out from September 2019 to March 2020 at the Ciparanje Experimental Station, Faculty of Agriculture, Universitas Padjadjaran. The experimental research was conducted using a Randomized Block Design (RBD) method, which consisted of 12 treatments which were a combination of legume cover crop (Mucuna bracteata) and vermicompost dosages (0 g, 200 g, 400 g, 600 g, 800 g, and 1000 g per plant), with four replications. The result showed that the doses of vermicompost fertilizer of 400 g per plant combined with M. bracteata as cover crop gave the highest value on the leaf number and stem diameter. In contrast, the best treatment for leaf chlorophyll content was 200 g per plant vermicompost without LCC planting. Thus, the application of vermicompost combined with the planting of Mucuna bracteata cover crop on young cinchona plants is strongly recommended.Keywords: Cinchona ledgeriana, Mucuna bracteata, organic fertilizer, plant growth. AbstrakTanaman kina (Cinchona ledgeriana Moens) merupakan tanaman obat-obatan penting yang sangat berpotensi untuk dikembangkan sebagai obat bahan alam. Tanaman ini dapat tumbuh baik di dataran tinggi. Penanaman kina di wilayah marjinal memerlukan berbagai modifikasi seperti pemberian tanaman penutup tanah (LCC) untuk mempertahankan kelembaban tanah dan pemenuhan nutrisi melalui pemupukan. Tujuan dari penelitian ini untuk melihat pengaruh kombinasi dari penggunaan Mucuna bracteata sebagai LCC dan dosis pupuk kascing pada pertumbuhan tanaman kina belum menghasilkan di wilayah marjinal. Penelitian ini dilakukan sejak September 2019 hingga Maret 2020 di kebun percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran. Rancangan percobaan menggunakan rancangan acak kelompok (RAK) dengan 12 perlakuan yang terdiri dari kombinasi tanaman penutup tanah (LCC) yaitu Mucuna bracteata dan pupuk kascing (0 g, 200 g, 400 g, 600 g, 800 g and 1000 g) per tanaman yang diulang empat kali. Hasil penelitian menunjukkan dosis pupuk kascing 400 g/tanaman yang dikombinasikan dengan Mucuna bracteata menghasilkan jumlah daun dan diameter batang tertinggi dibandingkan perlakuan lainnya. Sedangkan 200 g pupuk kascing tanpa LCC merupakan perlakuan dengan nilai klorofil daun tertinggi. Berdasarkan hasil tersebut, penggunaan pupuk kascing yang dikombinasikan dengan Mucuna bracteata sebagai LCC dapat meningkatkan pertumbuhan tanaman kina belum menghasilkan.Kata Kunci: Cinchona ledgeriana, Mucuna bracteata, pupuk organik, pertumbuhan tanaman.
In-situ characterization of Jatigede local Roid banana (Musa spp.) based on morphological and agronomical characteristics Ismail, Ade; Pratiwi, Vika Faraditha; Maulana, Haris; Bari, Ichsan Nurul; Maharani, Yani; Kusumah, Fajar Maulana Wijaya
Kultivasi Vol 22, No 1 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i1.45746

Abstract

Banana (Musa spp.) is one of the agricultural commodities that’s widely cultivated and used by the local community. Currently, only 101 types of local varieties of bananas are registered in Indonesia; one of them is the Roid banana from Jatigede District. Roid bananas grow wild without any mandatory special care. Continuous use without any conservation and preservation efforts can lead to scarcity of Roid banana germplasm as a genetic resource. Therefore, it is necessary to identify the distribution and diversity of Roid bananas through in situ exploration and characterization activities. This study aimed to identify the potential for genetic diversity and develop conservation efforts for the local variety of Roid banana (Musa spp.) in Jatigede District. This research was conducted from November 2021 - March 2022 in three villages in Jatigede District: Ciranggem Village, Jemah Village, and Mekarasih Village. The research used exploratory, survey, and interview methods as data collection techniques. Based on the results of the study, Jatigede District has a wide genetic diversity and distant kinship among Roid banana accessions. Characters that contributed to genetic diversity among accessions were the width of the midrib margin, the diameter of the bunch, and the length of the pseudostem. MS1.3 was the selected accession with its potential characteristics: more combs in bunches, leaf width of 71-80 cm, leaf length of 171-220 cm, and the number of rhizomes > 5 tillers.
Genetic variability, heritability, and path analysis for agronomic characters in hybrid maize Priyanto, Slamet Bambang; Efendi, Roy; Zainuddin, Bunyamin
Kultivasi Vol 22, No 1 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i1.38807

Abstract

Genetic parameters, which include genetic variability, heritability, and correlation between characters, are essential factors in the selection process. This study aims to: 1) determine the genetic variability and heritability for agronomic characters in hybrid maize and 2) determine the characteristics that directly affect hybrid maize yield. The experiment was conducted at Indonesian Cereal Research Institute (ICERI) Maros from June to October 2021. Fourteen maize hybrids genotypes were arranged in a randomized block design (RBD) with four replications. The observed traits were plant height, ear height, stalk diameter, leaf angle, leaf length, leaf width, days to anthesis, days to silking, days to maturity, number of harvested plants, number of harvested ears, fresh ear weight, shelling percentage, moisture content, ear length, ear diameter, number of rows per ear, number of seeds per row, 1000 seeds weight and yield. The results showed that agronomic characters with high heritability and broad genetic variability were plant height, ear height, leaf angle, leaf length, ear diameter, and 1000 seeds weight. The characters that most influence final yield were fresh ear weight and shelling percentage

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