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Adjustment of phosphorus concentration to increase growth and yield of cherry tomato using hydroponic drip system
Get PDFThe phosphorus element plays an essential role in plant growth both at the vegetative and generative phases, so its concentration modification in the nutrient solution is necessary to stimulate vegetative growth and crop yield. The research aimed to know the influence of different phosphorus concentrations on growth and yield of cherry tomato using a hydroponic drip irrigation system, conducted from February to June 2017 at Green House Research Station of Universitas Padjajaran Jatinangor using Completely Randomized Design with five treatments and five replications. The treatments were: phosphorous concentration of 100 ppm (P/N ratio 0.4), 125 ppm (P/N ratio 0.5), 150 ppm (P/N ratio 0.6), 175 ppm (P/N ratio 0.7), and 200 ppm (P/N ratio 0.8). The results showed that the increasing concentration of phosphorus improved crops height at the end of the vegetative phase, increased the number of flowers from the beginning to the end of the generative period, was able to prevent the flower fall, enhanced harvest index and weight of tomato fruit significantly at harvest time. Application of 200 ppm phosphorus concentration can increase growth and yield of cherry tomato. Unsur fosfor berperan penting dalam pertumbuhan tanaman pada fase vegetatif maupun fase generatif. Konsentrasi unsur P pada nutrisi tanaman sangat penting untuk merangsang pertumbuhan vegetatif dan hasil panen. Penelitian ini bertujuan untuk mengetahui pengaruh ragam kosentrasi unsur posfor terhadap pertumbuhan dan hasil tanaman tomat cherry pada sistem hidroponik irigasi tetes. Penelitian telah dilaksanakan pada bulan Februari sampai Juni 2017 di Green House Universitas Padjadjaran Jatinangor menggunakan rancangan acak lengkap terdiri dari lima perlakuan dan lima ulangan. Perlakuan konsentrasi posfor, yaitu 100 ppm (rasio P/N 0,4), 125 ppm (rasio P/N 0,5), 150 ppm (rasio P/N 0,6); 175 ppm (rasio P/N 0,7), dan 200 ppm (rasio P/N 0,8). Hasil penelitian menunjukkan bahwa peningkatan konsentrasi posfor meningkatkan tinggi tanaman pada akhir fase vegetatif, meningkatkan jumlah bunga dari awal sampai akhir fase generatif, mengurangi jumlah bunga gugur, meningkatkan indeks panen dan berat buah. Aplikasi konsentrasi posfor 200 ppm dapat meningkatkan pertumbuhan dan hasil tanaman tomat cherry
Pengaruh pemberian takaran fungi mikoriza arbuskular (FMA) terhadap pertumbuhan bibit kopi arabika (Coffea arabica L.)
Get PDFFungi Mikoriza Arbuskular (FMA) banyak ditemukan pada perakaran kopi. Tujuan dari percobaan ini untuk mempelajari pengaruh pemberian takaran FMA terhadap pertumbuhan bibit kopi Arabika (Coffea arabica L). Percobaan dilaksanakan dari bulan Mei sampai dengan bulan Agustus 2017, bertempat di Kebun Percobaan Fakultas Pertanian Universitas Winaya Mukti, Tanjungsari, Sumedang, dengan ketinggian tempat 850 m dpl. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) terdiri atas enam perlakuan dan diulang sebanyak empat kali. Perlakuan takaran FMA jenis Glomus agregatum yang terdiri dari A = 0  g tan-1; B = 10 g tan -1; C = 20 g tan-1; D = 30 g tan-1; E = 40 g tan-; dan F = 50 g tan-1. Hasil percobaan menunjukkan bahwa pemberian takaran inokulasi FMA  berpengaruh terhadap tinggi tanaman dan bobot kering tanaman. Pemberian takaran inokulasi FMA dengan takaran 40 g tan-1- sampai 50 g tan-1 memberikan pengaruh yang terbaik terhadap tinggi tanaman dan bobot kering tanaman. Dengan demikian pemberian FMA 40 g tan-1- sampai 50 g tan-1 dapat digunakan pada pembibitan kopi arabika. Arbuscular Mycorrhizal Fungi (AMF) is commonly found in coffee roots. The purpose of the research was to study effect of AMF application on growth of arabica coffee seedling (Coffea arabica L). The research was conducted from May to August 2017, at Research Station of Agriculture Faculty Universitas Winaya Mukti, Tanjungsari Sumedang, at 850 m above sea levels. The research used Randomized Block Design (RBD) consisted of six treatments and four replications. The treatment was dosage of AMF from Glomus agregatum type i.e. : A = 0 g plant-1; B = 10 g plant-1; C = 20 g plant-1; D = 30 g plant-1; E = 40 g plant-1; F = 50 g plant-1. Each plot consisted of 10 polybag with 4 sample plants. The research result showed that application of AMF affected on plant height and dry weight of plant, which the best effect was generated by 40 g plant-1- until 50 g plant-1 dosages . It is simply that AMF 40 g plant-1 - 50 g plant-1 can be used in arabica coffee nursery
Pertumbuhan miselia jamur merang (Volvariella volvaceae) lokasi pacing dengan jenis media dan konsentrasi biakan murni secara in vitro
Get PDFJamur merang merupakan salah satu jamur konsumsi yang sangat diminati, sehingga kebutuhan jamur merang semakin meningkat. Namun untuk memenuhi kebutuhan tersebut banyak ditemukan kendala, salah satunya dalam penyediaan biakan murni terkait jenis dan konsentrasi media biakan murni. Penelitian ini bertujuan untuk mendapatkan jenis dan konsentrasi media biakan murni yang memberikan pertumbuhan koloni miselia jamur merang tertinggi. Penelitian dilaksanakan di Laboratorium Bioteknologi Tanaman Fakultas Pertanian UNSIKA dari Maret sampai Agustus 2017, menggunakan rancangan acak kelompok faktorial dengan 3 ulangan. Faktor pertama : jenis media dengan 4 taraf m1 = PDA, m2 = arang sekam padi, m3 = jerami, m4 = campuran arang sekam padi dan jerami. Faktor kedua : konsentrasi media biakan murni dengan 3 taraf : k1 = 200 g l-1, k2 = 250 g l-1, k3 = 300 g l-1. Hasil penelitian ini menunjukkan bahwa, media arang sekam padi dan PDA dengan konsentrasi media biakan murni 200 g l-1 memberikan pengaruh yang sama baiknya bagi pertumbuhan miselium jamur merang dengan diameter sebesar 8 cm. Media arang sekam padi dapat dijadikan sebagai alternatif pengganti media PDA. Straw mushroom is one of the most popular mushroom. So needs of straw mushroom more increasing. However, to meet those needs had been founded obstscles, one of them is type and consentration of straw mushroom pure culture media. The aims of this research was to find out the type and consentration of pure culture media which could give the best growth of straw mushroom mycelia. The research was conducted in laboratory of plant bioctehnology, faculty of Agriculture, University of Singaperbangsa Karawang from March until August 2017. The experiment method used the factorial randomized block design with 3 replications. The first factor was the type of media, consisted of 4 levels m1 = Potato dextrose agar (PDA), m2 = rice husks m3= Rice Straw m4 = Mixture of rice husk and straw. The second factor was the concentration of media, consisted of 3 levels k1 = 200 g l-1, k2 = 250 g l-1, k3 = 300 g l-1. The results of the research showed that rice husk media and PDA with consentration’s 200 g l-1 gave good affect to mycelia colony diameter of straw mushroom by 8 cm. The rice huskwas an alternative as pure culture media for straw mushroom, substitute PDA
Keanekaragaman genotipe-genotipe potensial dan penentuan keragaman karakter agro-morfologi ercis (Pisum sativum L.)
Get PDFErcis (Pisum sativum L.) merupakan salah satu tanaman kacang komersial yang penting di dunia termasuk di Indonesia. Ercis lokal merupakan sumber populasi untuk meningkatkan kapasitas genetik hasil panen polong dan biji melalui seleksi galur murni. Tujuan penelitian ini untuk mempelajari jarak dan keanekaragaman genetik, serta keragaman karakter 37 genotipe potensial ercis hasil seleksi galur murni varietas lokal. Penelitian dilaksanakan pada bulan Maret hingga Juni 2018 di Desa Pendem, Kecamatan Junrejo, Kota Batu. Percobaan menggunakan rancangan acak kelompok dengan 37 genotipe sebagai perlakuan dan diulang tiga kali, sehingga terdapat 111 satuan percobaan. Pengamatan dilakukan pada masing-masing tanaman yakni karakter agronomi dan morfologi. Pengelompokan genetik didasarkan pada agglomerative hierarchical clustering dengan similiritas koefisien kolerasi Pearson dan metode aglomerasi unweighted pair group method average (UPGMA). Keanekaragaman genetik didasarkan pada indeks Shannon-Wiener (H’) dan indeks Shimpson (D). Keragaman karakter agronomi dan morfologi 37 genotipe ercis menggunakan principal component analysis (PCA) dengan pendekatan tipe korelasi Pearson. Berdasarkan analisis klaster 37 genotipe ercis terbagi menjadi 6 kelompok berdasarkan 61 karakter agro-morfologi dengan koefisien kemiripan 89-99%. Diversitas genetik ercis dikategorikan sedang dengan nilai indeks Shanon-Wiener 1,5 dan nilai indeks Simpson 0,26 yang menunjukkan tidak terdapat kelompok genetik yang mendominansi. Tiga puluh tujuh genotipe ercis memiliki keragaman yang luas. Keragaman kumulatif berdasarkan 61 karakter agro-morfologi yang diamati mencapai 87,83% yang melibatkan 44 karakter pada 16 komponen utama pertama.Pea (Pisum sativum L.) is one of the important commercial legumes in the world, including in Indonesia. The aims of the research were to study genetic distance, diversity, and characters variability of 37 genotypes of pea. The experiment was conducted on March to June 2018 in Pendem, Junrejo, Batu City. The experimental design used a randomized block design with 37 genotypes as treatments and replicated three times. Observations was made on agronomic and morphological characters. Genetic grouping according to agglomerative hierarchical clustering with Pearson correlation coefficient similarity and unweighted pair group average agglomeration method (UPGMA). Genetic diversity based on Shannon-Wiener (H') index and Shimpson (D) index. Variability of agronomic and morphological characters in 37 genotypes was analyzed by principal component analysis (PCA) with Pearson correlation approach. The results showed that cluster analysis of 37 genotypes was divided into six groups in 61 agro-morphological characters with similarity coefficients of 89-99%. Genetic diversity was medium categorized with Shanon-Wiener index value of 1.5 and Simpson index value of 0.26. It was indicated that no dominating on genotypes group. Thirty seven genotypes of pea showed high variability. Cumulative variability on 61 observed agro-morphological characters reached 87.83% which involved 44 characters in 16 first principal components
Sago palm biodiversity in Seram island Maluku province Indonesia
Get PDFThe number of sago palm species in Maluku province becomes the current issue of biodiversity. The research aimed to clarify the species of sago palm in the Seram island, Maluku province. The research was conducted from March to November 2009 in three sample regions i.e. Luhu of Seram Bagian Barat (SBB) district, Sawai of Maluku Tengah (MT) district, and Werinama of Seram Bagian Timur (SBT) district. Genetic analysis was done at the laboratory of plant biology Inter Center University (ICU) Bogor Agricultural University. Variety of palm sagu was analyzed using index of similarity analysis for group similarity and Shannon-Wiener (H’) index for biodiversity of species. Further, the genetic analysis used isozyme method showed that group of sago in Seram Island shared group similarity included index value ranging from 60.66–80.92%. Based on the result of Shannon-Wiener (H’) index, all growth phases of sago palm group in Seram Island generally indicated a very low H’ value ranging from 0.61 – 0.90. Clearly, the genetic analysis illustrated there were only two kinds of sago species in Seram Island i.e. Metroxylon rumphii Mart. and M. sagus Rottb. The first species consists of three varieties i.e. 1) Microcanthum Becc., 2) Sylvestre Becc., and 3) Rotang Becc. Sago species of M. sagu Rottb. has solely one variety Molat Becc. Here, variety of Microcanthum is divided by two kinds of variety i.e. Tuni and Makanaro. Jumlah spesies tumbuhan sagu di provinsi Maluku masih mengalami perdebatan dalam bidang biodiversitas. Penelitian ini bertujuan untuk melakukan klarifikasi spesies sagu yang tumbuh dan berkembang di pulau Seram, provinsi Maluku. Penelitian berlangsung pada bulan Maret–November 2009. Pengamatan dilakukan pada 3 wilayah sampel yaitu: Luhu Kab. Seram Bagian Barat (SBB), Sawai Kab. Maluku Tengah (MT), dan Werinama Kab. Seram Bagian Timur (SBT). Analisis genetik dikerjakan di laboratorium Biologi Tumbuhan Pusat Antar Universitas (PAU) IPB Bogor. Keanekaragaman kelompok sagu dianalisis dengan menggunakan analisis kemiripan kelompok. Keanekaragaman spesies dianalisis menggunakan Indeks Keaneragaman Shannon-Wiener (H’). Analisis genetik menggunakan  metode isozim. Hasil analisis menunjukkan bahwa kelompok sagu di Pulau Seram memiliki kemiripan kelompok yang termasuk dalam kategori tinggi dengan nilai indeks berkisar antara 60,66 – 80,92 %. Hasil analisis indeks keanekaragaman spesies menurut indeks Shannon-Wiener (H’) pada semua fase pertumbuhan menunjukkan bahwa indeks keanekaragaman spesies vegetasi dalam kelompok sagu di Pulau Seram secara umum termasuk dalam kategori sangat rendah dengan nilai H’ berkisar antara 0,61 – 0,90. Hasil analisis genetik menunjukkan bahwa di Pulau Seram Maluku hanya terdapat dua spesies sagu, yaitu Metroxylon rumphii Mart. dan M. sagus Rottb. Spesies yang pertama terdiri dari tiga varietas, yaitu: 1) Microcanthum Becc., 2) Sylvestre Becc., dan 3) Rotang Becc. Sedangkan spesies M. sagu Rottb. hanya memiliki satu varietas yakni Molat Becc. Varietas Microcanthum terbagi atas dua subvarietas, yaitu Tuni dan Makanaro.Â
Penampilan Agronomis dan Pendugaan Parameter Genetik 100 Galur Padi Generasi Lanjut pada Kondisi Cekaman Kekeringan
Get PDFThe condition of rice field without any irrigation is one of the problems in the rainfed land. This rice field only relies on the existence of water during the rainy day. This causes the limitation of water availability which affect plant growth. This study aimed to know the performance of the rice advance lines, estimated the value of genetic parameters and obtains the best line on drought condition. As many as 100 advance lines (> F8) for drought tolerant were tested using Augmented Design in five blocks. A total of six-check varieties were included in the experiment. The research was conducted at Dry Season of 2015 in ICRR-Sukamandi Experimental Field. The result showed that on the drought condition gained the average value for plant height as 103,44 cm, number of productive tillers as 12 tillers, percentage of filling pine grains reached 60,46%, leaf color index as 39,37, and weight of 1.000 grains averaged as 26,34 g, while weight grain per 5 clumps as 166,34 g. Yield trait was converted to hectares as 3,77 t ha-1 in drought conidition. Almost all characters had wide variability, high heritability values and high percentage of expected genetic advance except the number of filling grains per panicle trait. Lines BP17572c-SBY-1-CRB-2-SKI-1-3-PWK-2, ZX115-SKI-0-IND-2-SKI-1-PWK-2, BP30104e, BP17572c-SBY-1-CRB-2 -SKI-1-4-PWK-2, and BP17554-1c-SBY-1-CRB-8-SKI-1-6-PWK-2 provided the best performance with higher yield potential than the best check i.e. Inpari 13. There are ten promising lines which can be continued to the preliminary test for the assembly of rainfed rice varietie
Keragaman Karakter Morfo-Agronomi dan Keanekaragaman Galur- galur Cabai Besar (Capsicum annuum L.)
Get PDFThe objective of this research was to study the variability of morpho-agronomic characters, genetic distance, and genetic diversity of 39 chili pepper lines. The experiment was conducted from January until June 2017, in Agro Techno Park of Universitas Brawijaya, at Jatikerto, Malang Regency. This research was conducted by using randomized block design (RBD) with treatment of 39 chili pepper genotypes repeated two times. Observation was made on agronomic characters. The variability was analyzed by principal components analysis (PCA) with the approach of the Pearson correlation. Agglomerative hierarchical clustering (AHC) with the Pearson correlation coefficient of similarity and agglomeration method unweighted pair-group average was performed for lines grouping. Genetic diversity was obtained using Shannon index (H’) and Simpson index (D). The agronomic characters variability of chili pepper lines based on principal component analysis (PCA) was divided into 9 principal components with cumulative variability value 82,59%. Genetic distance was divided into four main groups at coefficient of 91% -100%. Mantel test of genetic distance based on 24 qualitative and 18 quantitative characters showed a significant positive correlation coefficient (r = 0,173 and P <0,0001). Diversity index based Shannon index (H’) included category 1-3 showed that the level of diversity was medium, and based on Simpson index 0,39 showed a low level diversity. The percentage proportion of the abundance in four groups showed a variation. Group A had the highest abundance and group D was the lowest
Efek Sterilisasi dan Komposisi Media Produksi Inokulan Fungi Mikoriza Arbuskula terhadap Kolonisasi Akar, Panjang Akar dan Bobot Kering Akar Sorgum
Get PDFQuality of biofertilizer such as arbuscular myorrhizal fungi could be improved through the selection of appropriate sterilization and composition of the medium. The objective of the experiment was to determine the effect of sterilization and carrier composition on root colonisation, root length and weight of sorghum root. A green house experiment was conducted in randomized block design. The factors were: 1. methods of sterilization (ie. control; autoclave; NaOCl 10%; Co-60 gamma irradiation), and 2. composition of the carrier of mycorrhiza (100% zeolite; 75% zeolite + 25% rice charcoal;  50% zeolite + 50% rice charcoal). Results showed that there was no interaction effect of sterilization and composition of carrier on root colonisation, root length and weight of sorghum root. However, different technique of sterilisation gave differences on root colonisation, root length and weight of sorghum root. Sterilization using NaOCl 10% was not recommended. Gamma Co-60 irradiation sterilization did not have difference with control and autoclave, however there was tendency that irradiation technique gave better results to all parameters measured
Pengaruh Kombinasi Aplikasi Jamur Paecilomyces fumosoroseus, Lem Perangkap, dan Insektisida Imidakloprid terhadap Empoasca sp.
Get PDFIn order to obtain an effective and efficient control method in integrated pest management, a research to know the effectiveness of combination treatments on Empoasca sp. on tea plant had been conducted. The trial was carried out at Gambung Experimental Station (1,250 masl) and designed in Randomized Complete Block design (RCB), with 8 treatments and 3 replications. The treatment tested comprised with A. Paecilomyces fumosoroseus (Pfr); B. sticky trap (ST); C. imidacloprid (I); D. Pfr + ST; E. Pfr + I; F. ST + I; G. Pfr + ST + I; and H. control. Pfr multiplied in rice medium 2.5 kg ha-1 and imidacloprid 0.125 L ha-1 were sprayed, while sticky trap was set in the middle of 5 m x 5 m plot. The parameters observed were attack intensity of Empoasca sp., population of Empoasca sp, and tea shoot production. The results showed that after 3 times application of all treatments revealed a decrease in the attack intensity of Empoasca sp. After the fourth application, combination treatment of sticky trap (ST) + imidacloprid (I) consistently showed higher efficacy than other treatments. In the sixth observation, the average of Empoasca sp. attack intensity of combination treatment (ST + I) was 15.95% with an average population of 0.67 Empoasca sp. per plot. In the meantime, tea shoot production was 33.64% higher compared with control
Kerentanan dan Kerusakan Beras terhadap Serangan Hama Pascapanen Sitophilus zeamais L. (Coleoptera: Curculionidae)
Get PDFDamage on rice during storage including damage on quantity and quality is caused by Sitophilus zeamais. The study aim was to evaluate the susceptibility and damage of rice from various rice varieties to the attacks of S. zeamais. Types of rice used in the research were varieties of IR64, IR65, IR66, Ciherang, Mekongga, Rojolele, and Sintanur. The method was with no-choice assay with observed variables were F1 progeny number, the median of development time and rice damage. The results showed that the rice type had different levels on susceptibility to S. zeamais. Rice from IR65, Mekongga, Rojolele, and Sintanur varieties were classified as moderate to susceptible varieties, while IR64 and IR66 were classified as moderate varieties and Ciherang was classified as susceptible variety. A high rice damage occured in the type of rice classified of susceptible to S. zeamais. There was a significant negative correlation between susceptibility index of rice with dimensions of rice width (r = -0.75*, P <0.05) and median of development time of S. zeamais (r = -0.78*, P <0.05) and positive correlation with number of F1 S. zeamais (r = 0.86**, P <0.01) and the percentage of rice powder (r = 0.71**, P <0.01). Rice that is easily attacked by postharvest pest insects should not be stored for long period of time