Jurnal Agro Industri Perkebunan最新文献

{"title":"Pengaruh Pemberian IAA pada Pembibitan Setek Vanili (Vanila planifolia) yang diperkaya Bakteri Pelarut Fosfat dan Bakteri Pelarut Kalium","authors":"D. E. Kusbianto, Sri Emiyati, T. Setiawati, G. Subroto, Mohammad Ghufron Rosyady","doi":"10.25181/jaip.v10i2.2550","DOIUrl":"https://doi.org/10.25181/jaip.v10i2.2550","url":null,"abstract":"Propagation of vanilla plants is generally using vegetative methods like cuttings. The use of external growth regulators can support the growth of nurseries. Phosphate solubilising bacteria and potassium solubilising bacteria as plant growth promoting rhizobacteria are producing microbial IAA. This study used auxin in synthetic IAA combined with IAA microbes from phosphate solubilising bacteria and potassium solubilising bacteria. This study aimed to determine the effectiveness of each microbe at each dose of synthetic IAA that was applied. The study was conducted from November 2021-April 2022 in the Biological Soil Laboratory and Greenhouse University of Jember. The research uses a randomised block design with three replications with the factorial arrangement. The first factor was organic matter which was enriched with bacterial isolate (B0 = control, B1 = BPF isolate, and B2 = BPK isolate). The second factor was concentration of IAA (A0 = 0 mg.l-1, A1 = 100 mg.l-1, and A2 = 200 mg.l-1). The data were analysed by ANOVA and further tested with Duncan Multiple Range Test (DMRT) with a 95% confidence level. The results showed that treatment of synthetic IAA affects the parameters of length and volume of adventitious roots, which are effective in helping to supply nutrients with the best treatment at a concentration of 200 ppm. Meanwhile, enrichment of media with isolates of phosphate solubilising bacteria and potassium solubilising bacteria gave a better effect than control on the observation of tendril length, number of leaves, number of adventitious roots and taproots, length of adventitious roots and taproots, the volume of adventitious roots and taproot, and fresh weight of vanilla seedlings.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46237550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uji Efektivitas Pestisida Nabati Ekstrak Daun Pepaya (Carica papaya L.) dan Ekstrak Ubi Gadung (Dioscorea hispida Dennst) pada Mortalitas Penghisap Buah Kakao (Helopeltis spp.)","authors":"Dryantama Azhari, Albertus Sudirman, M. Maryanti","doi":"10.25181/jaip.v10i2.2283","DOIUrl":"https://doi.org/10.25181/jaip.v10i2.2283","url":null,"abstract":"Fruit-sucking bugs (Helopeltis spp.) are one of the main pests on cocoa plants. The damage caused by this pest is by piercing and sucking the liquid of cocoa pods and young shoots. This study aimed to obtain the effective concentration of papaya leaf extract and yam extract on the mortality of cocoa fruit-sucking bugs. This research was carried out at the Plant Production Laboratory II of the Politeknik Negeri Lampung from September 2020 to January 2021. The design used in this study was a Randomized Block Design consisting of 4 treatments and six replications. The results showed that the average daily mortality rate fluctuated in each treatment. In all treatment concentrations of papaya leaf extract and yam extract, the average mortality of cocoa fruit-sucking bugs ranged from 25.76% to 75.76%. All treatment concentrations of papaya leaf extract and yam extract were not effective in the mortality of cocoa fruit-sucking bugs.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42249892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studi Meta-analisis: Pengaruh Penambahan Kultur Starter pada Profil Fermentasi, Mikroorganisme, dan Metabolit Hasil Fermentasi Biji Kakao (Theobroma cacao L.)","authors":"Nafila Chaerunnisa Misbakh, Laras Cempaka, Wahyudi David, Nur Asiah","doi":"10.25181/jaip.v10i2.2545","DOIUrl":"https://doi.org/10.25181/jaip.v10i2.2545","url":null,"abstract":"Fermentation of cocoa beans can produce flavour precursors and colour changes in chocolate. Generally, this process is carried out for 5-7 days without adding starter culture. Adding a starter culture is considered to improve the quality of cocoa beans and shorten the fermentation time. The purpose of this study was to compare the starter cultures used in the cocoa bean fermentation process through a meta-analysis approach. Twenty-four related articles have been screened from the initial number of 110 articles. There are five starter cultures and six parameters that can be processed by Confidence Interval (CI) analysis. Calculating p and I2 values ​​using STATA software was performed to see variations between studies and test the significance of their effects during the fermentation process through p values. The variation test between studies showed that the profiles of lactic acid bacteria (LAB) and acetic acid bacteria (AAB) were heterogeneous. While the yeast profile, levels of lactic acid, acetic acid and pH between studies are homogeneous. The results of the study showed that the addition of starter culture will affect the levels of yeast profile (ES: 0.470; 95% CI: 0.371 to 0.569; p = 0.0); LAB profile (ES: 0.747; 95% CI: 0.600 to 0.894; p = 0,0); AAB profile (ES: 0.808; 95% CI: 0.663 to 0.953; p = 0.0); lactic acid (ES: -0.003; 95% CI: -0.162 to 0.156; p = 0.039); acetic acid (ES: 0.189; 95% CI: 0.01 to 0.368; p = 0.039) and pH (ES: 0.109; 95% CI: 0.001 to 0.218; p = 0.049). Using pure starter cultures can increase the number of microbes of the type added and increase metabolic activity by showing a decrease in acetic acid levels in cocoa beans at the end of the fermentation process. However, no changes were seen in pH or lactic acid levels.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48761447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antagonisme jamur rizosfer tanaman karet terhadap Rigidoporus microporus secara in vitro dan in planta","authors":"Endah Yulia, A. Rahayu, Tarkus Suganda","doi":"10.15575/17824","DOIUrl":"https://doi.org/10.15575/17824","url":null,"abstract":"Penyakit jamur akar putih (JAP) yang disebabkan oleh Rigidoporus microporus merupakan penyakit penting pada tanaman karet. Pengendalian penyakit JAP umumnya menggunakan fungisida sintetik yang berdampak buruk terhadap lingkungan dan berbiaya mahal. Salah satu cara pengendalian penyakit tular tanah yang lebih murah dan efisien adalah pemanfaatan mikroorganisme antagonis. Penelitian ini bertujuan untuk menguji antagonisme jamur rizosfer tanaman karet (JRK) terhadap R. microporus. Penelitian dilaksanakan dari November 2021 hingga Februari 2022 menggunakan metode survei di Perkebunan Karet Rakyat (PKR) Sakambangan, Kabupaten Garut, Jawa Barat serta metode eksperimental di Laboratorium Fitopatologi, Fakultas Pertanian, Universitas Padjadjaran. Rancangan Acak Lengkap digunakan untuk dua uji antagonisme yaitu dual culture (in vitro) berupa perlakuan 17 isolat JRK dan kontrol R. microporus serta uji potongan akar (in planta) berupa perlakuan 8 isolat JRK dan dua kontrol dengan tiga kali ulangan. Dari hasil penelitian diperoleh 17 isolat jamur termasuk genus Trichoderma, Aspergillus, Penicillium, Gliocladium, Paecilomyces, Acremonium dan Cladosporium, serta empat isolat tidak teridentifikasi. Semua isolat menghambat pertumbuhan R. microporus pada uji in vitro dan kolonisasi pada uji in planta dengan penghambatan tertinggi masing-masing 86,07% dan 85,33%. Trichoderma sp., Aspergillus sp. dan Penicillium sp. merupakan jamur antagonis potensial untuk mengendalikan R. microporus asal PKR Sakambangan.ABSTRACTWhite root rot disease (WRRD) incited by Rigidoporus microporus is an important disease in rubber plants. WRRD is commonly controlled using synthetic fungicide, nevertheless it is expensive and harmful to environment. One way to control soil-borne diseases that is considered cheaper, efficient and safer is by using antagonistic microorganisms. This study aimed to examine the antagonism of rubber plant rhizosphere fungi (RRF) against R. microporus. The research was carried out from November 2021 to February 2022. Research used survey method at a rubber plantation in Sakambangan, Garut Regency, West Java, and experimental method at the Phytopathology Laboratory, Faculty of Agriculture, Universitas Padjadjaran. A Completely Randomized Design was used for the two antagonism tests, namely dual culture (in vitro) of 17 RRF isolates and R. microporus as control treatment while a rubber root piece test (in planta) was used for testing 8 RRF isolates and two control treatments with three replications. The results derived 17 fungal isolates in the genera of Trichoderma, Aspergillus, Penicillium, Gliocladium, Paecilomyces, Acremonium, Cladosporium, and four unidentified. All isolates inhibited the growth (86.07%) and colonization (85.33%) of R. microporus. Trichoderma sp., Aspergillus sp. and Penicillium sp. are potential antagonists against R. microporus of Sakambangan rubber plantation origin.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90584559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uji keberhasilan persilangan, heterosis dan penampilan F1 padi lokal Pare Bau x Impari 4","authors":"Trisday Parari, Muh. Riadi, Rinaldi Sjahril, Limbongan Limbongan, Y. Putra","doi":"10.15575/14987","DOIUrl":"https://doi.org/10.15575/14987","url":null,"abstract":"Padi lokal memiliki keunggulan pada rasa dan aroma, namun memiliki produksi yang rendah dan umur panen yang lama sehingga kurang unggul. Upaya untuk memperbaiki genetik padi lokal adalah melalui persilangan buatan. Tujuan penelitian ini adalah untuk mempelajari tingkat keberhasilan persilangan, heterosis, karakter kualitatif dan kuantitatif F1, dan kekerabatan F1 dengan tetuanya. Penelitian dilaksanakan di Kecamatan Tallunglipu, Kabupaten Toraja Utara dari Januari 2019 hingga Juli 2020. Metode persilangan yang digunakan yaitu single cross dan resiprocal cross menggunakan padi lokal aromatik Pare Bau dengan Inpari 4 sehingga diperoleh dua kombinasi persilangan. Hasil penelitian menunjukkan persentase keberhasilan persilangan single cross sebesar 14,4% dan persilangan resiprok sebesar 25,5%. Karakter hasil F1 persilangan resiprok, jumlah gabah bernas per malai (164,2 gabah) dan bobot gabah bernas per rumpun (96,4 g), lebih tinggi dibandingkan F1 single cross. Karakter keharuman pada waktu berbunga terbaik dihasilkan oleh tanaman F1 single cross B1 senilai 92,2% dan B2 senilai 95%. Nilai heterosis dan heterobeltiosis tertinggi adalah F1 resiprok pada semua karakter yang diamati. Generasi F1 hasil single cross (B1 dan B2) memiliki kekerabatan dekat dengan Pare Bau, sedangkan generasi F1 hasil persilangan resiprok (RB1, RB2, RB3, RB4, dan RB5) membentuk kelompok genetik tersendiri tetapi memiliki kekerabatan dekat dengan Inpari 4. ABSTRACTThe rice landrace has a great taste and aroma, but has low yield and late maturity. The artificial crossing is one of ways to improve the genetics performance of the rice landrace. This study purposed to observe the success rate of crosses, heterosis, heterobeltiosis, qualitative and quantitative characters of F1, and genetic relationship of the F1with its parents. This research was conducted in Tallunglipu District, North Toraja Regency from January 2019 to July 2020. The crosses method used were single cross and reciprocal cross using local aromatic Pare Bau and Inpari 4 varieties in order to obtain two cross combinations. The results showed the success rate of the single cross was 14,4% and the reciprocal cross was 25,5%. The characteristics of the F1 reciprocal crosses, the number of fully developed grain per panicle (164,2 grain) and the weight of pithy grain per clump (96,4 g), was higher than the F1 single cross. The best level of aroma character at the time flowering was produced by F1 single cross i.e B1 92,2% and B2 95%. Resiprocal F1 had the highest value of heterosis and heterobeltiosis in all observed characters. Single cross lines (B1 and B2) were closely related to Pare Bau, while reciprocal cross lines (RB1, RB2, RB3, RB4, and RB5) formed separate genetic groups. However, reciprocal cross lines were closely related to Inpari 4.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81587370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Induksi ketahanpangan padi terhadap serangan pathogen busuk pelepah (Rhizoctonia solani) menggunakan halloo halotolerant bakteri Diazotro","authors":"Fenty Chakimatul Isnaeni, E. Mugiastuti, N. W. A. Leana, Eka Oktaviani, P. Purwanto","doi":"10.15575/18516","DOIUrl":"https://doi.org/10.15575/18516","url":null,"abstract":"Padi merupakan komoditas pangan yang memiliki peranan terpenting dalam memenuhi kebutuhan pokok masyarakat Indonesia. Ekstensifikasi produksi padi dapat dilakukan dengan memanfaatkan lahan marjinal seperti lahan salin. Lahan salin merupakan lahan yang memiliki kadar kadar garam tinggi akibat intrusi air laut maupun tingginya laju evaporasi. Pengembangan budidaya padi di lahan salin memiliki kendala berupa serangan patogen busuk pelepah (Rhizoctonia solani). Alternatif pengendalian patogen selain menggunakan pestsida kimia, dapat dilakukan menggunakan Plant Growth Promoting Rhizobacteria (PGPR), seperti kelompok bakteri diazotrof. Penelitian ini bertujuan untuk mengetahui potensi bakteri diazotrof lahan salin dalam meningkatkan ketahanan tanaman padi serta kemampuannya dalam memacu pertumbuhan padi yang terinfeksi R. solani. Penelitian dilaksanakan di Experimental Farm dan Laboratorium Agronomi & Hortikultura, Fakultas Pertanian Unsoed pada bulan Oktober 2021 - Februari 2022. Rancangan yang digunakan adalah Rancangan Acak Kelompok Lengkap (RAKL) dengan 11 perlakuan dan diulang tiga kali, meliputi kontrol tanpa inokulasi bakteri diazotrof dan inokulasi isolat Ju1, Jn3, Jn1, J, J12, J5, Kn1, A3, Jn dan K3. Semua tanaman juga dinokulasi dengan Rhizoctonia solani. Hasil penelitian menunjukkan bahwa inokulasi bakteri diazotrof dapat meningkatkan ketahanan padi yang terinfeksi jamur R. solani, ditandai dengan penurunan intensitas penyakit hingga 70%, peningkatan kandungan saponin, tanin dan hidrokuinon, serta peningkatkan pertumbuhan tinggi tanaman dan panjang akar total padi.ABSTRACTRice is the most important  food commodity that supply the basic needs of the Indonesian people. The development of rice cultivation in salin land has obstacles in the form of attacks by sheat blight pathogen (Rhizoctonia solani). Alternative to controlling pathogens other than using chemical pesticides is by using Plant Growth Promoting Rhizobacteria (PGPR), such as diazotroph bacteria. This research aimed to determine the potential of diazotrof bacteria in increasing rice resistance and its ability to stimulate the growth of rice infected with R. solani. The research was carried out at Experimental Farm and Agrohorti Laboratory, Faculty of Agriculture Unsoed in October 2021 - February 2022. The design used was Randomized Completely Block Design (RCBD) with 11 treatments and repeated three times, including controls without inoculation of diazotroph bacteria and inoculation of isolates Ju1, Jn3, Jn1, J, J12, J5, Kn1, A3, Jn and K3. All plants were also inoculated with R. solani. The results showed that inoculation with diazotrof bacteria could increase the rice resistance towards attack of sheath blight pathogen (R. solani) that characterized by a decrease disease intensity up to 70%, increase saponins, tannins and hydroquinones content, also increase growth of plant height and total root length of rice.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89594706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioassay of phosphorus solubilizing isolates for enhance P solubility and growth of rice (Oryza sativa L.)","authors":"B. Fitriatin, D. Manurung, Mieke Rochimi Setiawan","doi":"10.15575/17754","DOIUrl":"https://doi.org/10.15575/17754","url":null,"abstract":"Fosfat merupakan salah satu unsur yang berperan penting bagi pertumbuhan tanaman dan kesuburan tanah. Namun, ketersediaan unsur P terlarut yang dapat diserap oleh tanaman sangat kecil karena berikatan dengan kation yang berada di dalam tanah. Salah satu upaya dalam meningkatkan P tersedia dalam tanah adalah dengan pemanfaatan agen hayati Bakteri Pelarut Fosfat (BPF). Penelitian ini bertujuan untuk menguji isolat BPF yang dapat meningkatkan kelarutan P dan pertumbuhan padi pada uji hayati. Percobaan ini dilaksanakan di Rumah Kaca Departemen Ilmu Tanah dan Sumber Daya Lahan, Fakultas Pertanian, Universitas Padjadjaran. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan 6 perlakuan dan 5 ulangan. Masing-masing perlakuan jenis bakteri adalah kontrol, Bacillus substilis, B. megatherium, Pseudomonas mallei, Burkholderia sp., dan isolat campuran. Hasil percobaan menunjukkan isolat BPF yang diuji memiliki kemampuan yang bervariasi dalam meningkatkan enzim fosfatase, kelarutan P, dan pertumbuhan padi pada uji hayati. Lebih lanjut, perlakuan BPF campuran memberikan pengaruh lebih baik terhadap aktivitas fosfatase, P terlarut dan pertumbuhan padi dibandingkan isolat tunggal.ABSTRACTPhosphorus is an element that important for soil fertility and plant growth. However, the phosphate nutrient can be uptaken by plants only in a small amount because it binds to cations in the soil. The effort for enhancing the soil P availabilty is by the phosphorus solubilizing bacteria (PSB). This study aimed to test PSB  isolates  for increasing P solubility and rice growth using bioassay. The experiment conducted at the greenhouse in Jatinangor District, Sumedang Regency, West Java with  Randomized Block Design (RBD) for PSB isolates with five replications. Each type of bacteria treatment was control, Bacillus substilis, B. megatherium, Pseudomonas mallei, Burkholderia sp., and mixed isolates. The results showed that the P solubilizing  isolates had various abilities to enhance phosphatase, P solubility, and rice growth using bioassay. Furthermore, the mixed PSB isolates had a better effect on phosphatase activity, dissolved P and rice growth than single isolates.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78829488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seleksi jagung hibrida UNPAD berdasarkan komponen hasil dan parameter tumpangsari pada sistem tanam tumpang sari jagung-ubi jalar","authors":"Jajang Supriatna, Fakhri Nasharul Syihab, Novriza Sativa, Yuyun Yuwariah, D. Ruswandi","doi":"10.15575/14955","DOIUrl":"https://doi.org/10.15575/14955","url":null,"abstract":"Tumpangsari merupakan pemanfaatan lahan dengan cara menanam dua jenis tanaman atau lebih. Hal yang perlu diperhatikan dalam sistem tanaman tumpangsari adalah penentuan jenis serta kultivar tanaman yang digunakan. Sebagian besar kultivar jagung yang beredar di masyarakat dikembangkan untuk pertanaman tunggal sehingga diperlukan kegiatan seleksi untuk mendapatkan kultivar jagung yang sesuai untuk sistem tanam tumpangsari. Penelitian ini bertujuan untuk menyeleksi 22 jagung hibrida berdasarkan komponen hasil dan parameter tumpangsari. Penelitian dilaksanakan di Desa Margamulya, Kecamatan Cikajang, Garut, Jawa Barat dengan.ketinggian 1346 meter diatas permukaan laut. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktor Tunggal dengan dua metode yaitu metode eksperimental dan metode deskriptif kuantitatif. Hasil penelitian menunjukkan 20 hibrida terseleksi berdasarkan karakter diameter tongkol, 18 hibrida berdasarkan karakter panjang tongkol, 19 hibrida berdasarkan karakter jumlah baris biji per tongkol, dan 13 hibrida berdasarkan karakter jumlah biji per tongkol. Berdasarkan parameter tumpangsari terseleksi 3 hibrida dengan kritera menguntungkan dalam kondisi sistem tanam tumpangsari dengan ubi jalar berdasarkan Land Equivalent Ratio (LER), 13 hibrida menunjukkan lebih kompetitif dibandingkan dengan ubi jalar berdasarkan Competitive Ratio (CR), dan semua hibrida mengalami kehilangan hasil berdasarkan Actual Yield Loss (AYL). Hibrida DR7 x DR8, DR 14 X DR 18 dan MDR 3.1.4 X MDR 18.5.1 merupakan hibrida terseleksi berdasarkan komponen hasil dan parameter tumpangsari.ABSTRACTIntercropping is cultivating two or more types of plants at the same field. Selecting type and cultivar of the plants need to be considered in the intercropping system. Commonly, the available corn cultivars in the market are developed for single cropping. Therefore plant selection is necessary to obtain corn cultivars suitable for intercropping systems. The research was conducted in Desa Margamulya, Cikajang District, Garut, West Java at 1346 meters above sea level. This study used a randomized block design (RBD) design with two methods; the experimental method and the quantitative descriptive method. The results showed 20 hybrids were selected on the character of cob diameter, 18 combinations surface of the cob length, 19 hybrids on the number of cob seed rows, 13 hybrids on the number of cob kernels. According to the parameters of intercropping combinations, 3 hybrids were selected with superior characters in intercropping condition with sweet potatoes based on Land Equivalent Ratio (LER), 13 hybrids showed the more competitive characters compared to sweet potatoes based on Competitive Ratio (CR) and all hybrids showed yield loss based on Actual Yield Loss (AYL). Hybrids DR7 x DR8, DR 14 X DR 18 and MDR 3.1.4 X MDR 18.5.1 are selected hybrids based on yield components and intercropping parameters.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83266860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eksplorasi dan karakterisasi keragaman plasma nutfah tanaman padi (Oryza sativa L.) di pulau Belitung","authors":"T. Lestari, Yuditia Arta Kencana, Eries Dyah Mustikarini","doi":"10.15575/15085","DOIUrl":"https://doi.org/10.15575/15085","url":null,"abstract":"Banyak sumber daya genetik penting yang masih belum teridentifikasi di Pulau Belitung salah satunya adalah tanaman padi. Kegiatan eksplorasi dan identifikasi menjadi langkah yang tepat untuk mendapatkan jenis tanaman padi baru pada kegiatan pemuliaan tanaman. Tujuan penelitian ini adalah melakukan eksplorasi, karakterisasi, dan menentukan hubungan kekerabatan dan variabilitas padi di Pulau Belitung. Penelitian dilaksanakan dari bulan Desember 2020 hingga Mei 2021. Penelitian menggunakan metode eksplorasi dengan teknik pengambilan sampel secara purposive sampling. Karakter yang diidentifikasi terdiri dari karakter kualitatif dan karakter kuantitatif. Analisis kekerabatan menggunakan program  NTSYS. Hasil penelitian didapatkan lima aksesi yaitu Rembiak, Siam, Cerai Merah, Ketan dan Merawang. Hasil uji beda nyata terkecil (BNT) menunjukkan aksesi padi lokal Belitung memiliki perbedaan yang nyata pada karakter umur panen (α 5%). Hasil analisis hubungan kekerabatan pada karakter kualitatif terdapat 2 grup dengan koefisien 0,64 atau 64%, kuantitatif terdapat 4 grup dengan koefisien 0,28 atau 28% dan gabungan dari karakter kualitatif dan kuantitatif terdapat 4 grup dengan koefisien 0,33 atau 33%. Aksesi padi yang diperoleh terdapat variabilitas genetik luas yaitu pada karakter jumlah biji total serta variabilitas fenotip yang luas yaitu pada tinggi tanaman, umur panen dan berat 1000 benih.ABSTRACTMany important genetic resources have not identified yet on the Belitung Island, one of which is rice plant. Exploration and identification activities are the right steps to get a new type of rice plant in plant breeding activities. The objectives of research were to explore, characterize, and determine the relationship and variability of rice on Belitung Island. The experiment was conducted from December 2020 to May 2021. Research used exploratory  methods with purposive sampling technique.The identified character consisted of qualitative and quantitative characters. Kinship analysis using the NTSYS program. The results of the study obtained five accessions namely Rembiak, Siam, Cerai Merah, Ketan and Merawang. Least Significance Different (LSD) results showed that local rice accession had a noticeable difference in the character of the harvest age (α 5%).\" The results of the analysis of relationships in qualitative character there were 2 groups with coefficients of 0.64 or 64%, quantitative there were 4 grup with coefficients of 0.28 or 28% and a combination of qualitative and quantitative characters there were 4 groups with coefficients of 0.33 or 33%. Rice accession obtained contained extensive genetic variability in the character of the total number of seeds as well as wide phenotype variability on the plant height, harvest age and weight of 1000 seeds.","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84015485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Matter JA 9(1), 2022","authors":"Jurnal Agro","doi":"10.15575/19707","DOIUrl":"https://doi.org/10.15575/19707","url":null,"abstract":"","PeriodicalId":34207,"journal":{"name":"Jurnal Agro Industri Perkebunan","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91388910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}