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Agrin : Jurnal Penelitian Pertanian
Published by Universitas Jenderal Soedirman
ISSN : 14100029     EISSN : 25496786     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Agrin provides facilities for publishing articles or quality papers in the form of research results in various aspects of agriculture and agricultural commodities widely including ; agronomy, agroecology, plant breeding, horticulture, soil science, plant protection, agribusiness, agroforestry, food science and technology , agricultural techniques, agricultural innovations, agricultural models and agricultural biotechnology. This journal is published twice a year, ie the April and October. The Agrin Journal invites researchers, academics and intellectuals to contribute critical writing and contribute to the development of agricultural science.
Arjuna Subject : -
Articles 303 Documents
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DIAGNOSIS HARA KENDALA PENINGKATAN HASIL KACANG TANAH PADA ALFISOL NGADIROJO, WONOGIRI Sudaryono, Sudaryono; Wijanarko, A.; Sutarno, Sutarno
Agrin Vol 14, No 1 (2010): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2010.14.1.100

Abstract

Diagnosis dan karakterisasi suatu lahan merupakan satu tahapan penting untuk mengenali kendalapeningkatan hasil, bentuk pengelolaan yang diperlukan, dan gambaran potensi hasilnya. Penelitian dilakukan diwilayah Kecamatan Ngadirojo, Kabupaten Wonogiri, Jawa Tengah. Metode penelitian adalah sigi (survey) denganmengambil contoh tanah lapisan atas (top soil) pada kedalaman 0-20 cm. Contoh tanah diambil dari 11 desa dan setiapdesa diambil dua titik pengambilan secara acak. Analisis kimiawi lengkap dikerjakan di laboratorium Balitkabi, yangmeliputi pH tanah, kadar hara N, P, K, S, Ca, Mg, Cu, Mn, Fe, Zn, KTK, dan kadar C-organik. Disampingpengambilan contoh tanah, dilakukan pula sigi hasil (yield cut survey) untuk tanaman kacang tanah yang diusahakanoleh petani menurut teknologi petani setempat. Data agronomi terhadap sigi hasil kacang tanah terdiri atas hasil ubinandan komponen hasil. Hasil diagnosis status hara tanah di wilayah Kecamatan Ngadirojo menunjukkan bahwa (1)semua desa memiliki status N rendah; (2) status P beragam: enam lokasi (27%) rendah, 11 lokasi (50%) sedang, dan 5lokasi (23 %) tinggi; (3) status K menunjukkan 45% lokasi berstatus rendah dan sisanya berstatus tinggi; (4) status Srendah hingga tinggi; (5) status Ca, Mg, dan hara mikro tergolong tinggi; (6) terdapat peluang yang cukup besaruntuk memperkecil senjang hasil kacang tanah di tingkat petani di wilayah Kecamatan Ngadirojo, Wonogiri; dan (7)hasil kacang tanah pada sistem tanam koak (2,20 t polong kering/ha) lebih tinggi dibandingkan sistem tugal (1,95 t/ha).Kata kunci: diagnosisi hara, kacang tanah, produksi, alfisol ABSTRACTDiagnosis and characterization of land is one of important step to distinguish: a constraint of increasingyield, type of management is being required, and yield potential figure. The research was done and concentrated inNgadirojo subdistrict, Wonogiri, Central Java province. The method of survey was soil sampling and taking soilsample from top soil in 0-20 cm depth. Soil samples were taken up from 11 villages, each villages was takenrandomly at two sites. Analysis of soil sample consisted of status P, K, Ca, Mg, S, pH, C-organic and micronutrients Fe and Zn. A part from soil sampling, it was done yield cut survey for groundnut at the farmer's field.The agronomic data of yield cut survey consisted of yield and component of yield.The result of diagnosisindicated that (1) all the villages area of Ngadirojo sub district have low nitrogen fertility; (2) The phosphorusfertility in Ngadirojo is vary, there are six location (27 %) having low P fertility status, eleven location (50 %)having medium P fertility status, and five location (23 %) having high P fertility status; (3) Potassium fertilitystatus in Ngadirojo indicated that 45 % area have low K fertility and high status for the rest; (4) the sulfurfertility is vary from low to high; (5). The Ca, Mg, and micronutrients are high at all location of Ngadirojo subdistrist; (6). There is a big challenge to minimize yield gap of groundnut Ngadirojo sub district; and (7) At farmerslevel, the hole planting technique by hue ("sistem koak") produced groundnut yield higher than "tugal technique"(2.20 t dry pod versus 1.95 Aa).Key words: diagnosis of nutrient, groundnut, yield, alfisol
PERFORMANSI KUALITAS ATRIBUT BERAS ORGANIK DAN TINGKAT KEPUASAN KONSUMEN BERAS ORGANIK DI KABUPATEN SRAGEN Quality Performance and Satisfaction Level of Consument on Organic Rice in Sragen District Swastika, Nila; Yanto, Tri; Hartati, Anny
Agrin Vol 17, No 2 (2013): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2013.17.2.203

Abstract

Penelitian dilakukan dengan tujuan untuk menentukan kualitas beras organik berdasarkan kepuasankonsumen beras organik di Kabupaten Sragen. Penelitian dilakukan melalui identifikasi tingkat kepentinganatribut beras organik, tingkat kesesuaian dan kesenjangan atribut mutu beras organik, kepuasan konsumen berasorganik terhadap atribut mutu beras organik, prioritas perbaikan atribut mutu beras organik. Atribut mutu berasorganik yang digunakan sebanyak 10 dan dianalisis dengan metode Customer Satisfaction Index (CSI) danImportant And Performance Analysis (IPA). Hasil penelitian menunjukkan bahwa rata-rata nilai kepentinganatribut beras organik adalah 3,53 dan Atribut mutu beras organik yang dianggap tidak penting adalah harga(2,30) dan kemasan (2,60). Hasil analisis CSI didapatkan nilai 61,6% menunjukkan bahwa konsumen berasorganik di Kabupaten Sragen cukup puas dan berdasarkan diagram IPA diketahui bahwa kinerja atribut produkberas organik yang dihasilkan oleh pertanian organik di Kabupaten Sragen masih perlu diperbaiki, terutama padaatribut warna, kebersihan, sertifikat organik dan kesesuaian label.Kata kunci: atribut mutu, beras organik, Customer Satisfaction Indeks (CSI), Important And PerformanceAnalysis (IPA)ABSTRACTThe research objetives of this study to determine the quality of organic rice by consumer satisfaction onorganic rice in Sragen. The study was conducted by identifying the importance of the organic rice attribute, thelevel of suitability and gap in quality attributes of organic rice, organic rice consumer satisfaction of the organicrice quality attributes, improvement priority of organic rice quality attributes. Organic rice quality attributesused were 10 and they were analyzed by the method of Customer Satisfaction Index (CSI) and Important AndPerformance Analysis (IPA) . The results showed that the average value of the attribute of interest was 3.53 andorganic rice quality attributes considered to be unimportant were the price (2.30) and packaging (2,60) . CSIanalysis results showed that the value of 61.6 % of the consumers of organic rice in Sragen were rather satisfiedand the diagram based on IPA were known that the attribute performance of organic rice products produced byorganic farming in Sragen still needed to improve, especially on the color attributes , cleanliness , organiccertificates and suitability of organic labels.Key words: quality atribute, organic rice, Customer Satisfaction Indeks (CSI), Important And PerformanceAnalysis (IPA)
EVALUASI INPUT AGEN HAYATI PADA UJI PAKET TEKNOLOGI BUDIDAYA KEDELAI DI LAHAN KERING MASAM LAMPUNG TENGAH Prihastuti, Prihastuti; Sudaryono, Sudaryono
Agrin Vol 12, No 1 (2008): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2008.12.1.79

Abstract

Dalam upaya meningkatkan produktivitas lahan kering masam mutlak diperlukan introduksi mikroba.Agen hayati merupakan sel mikroba yang bermanfaat untuk pertumbuhan tanaman, di mana aktivitasnyaditentukan oleh kondisi lingkungan tumbuhnya. Penelitian ini bertujuan untuk melakukan evaluasi terhadap duajenis agen hayati, yaitu (A) yang berisi bakteri Rhizobium, Azospirillum dan Aspergillus niger, dan (B) yangberisi jamur mikoriza vesikular-arbuskular, pada uji paket teknologi budidaya kedelai di lahan kering masamLampung Tengah. Hasil penelitian menunjukkan bahwa terdapat interaksi dalam pemberian agen hayati terhadappertumbuhan tanaman dan hasil biji. Pemberian agen hayati (A) secara tunggal tidak meningkatkan hasil biji,sedangkan pada pemberian agen hayati (B) dapat meningkatkan hasil biji 10,88% dan pada pemberian keduanyameningkatkan hasil biji sekitar 5,18% daripada kontrol. Faktor lingkungan tumbuh mikroba merupakan penentukeberhasilan introduksi suatu agen hayati. Adanya perbedaan tanggap tanaman kedelai terhadap agen hayati Adan B menunjukkan bahwa pada aplikasi agen hayati perlu diperhatikan kondisi lahan yang berfungsi sebagaimedia untuk tumbuh dan beraktivitas bagi mikroba yang terkandung di dalamnya.Kata kunci: agen hayati, hasil biji, kedelai, lahan kering masam ABSTRACTAn effort to improve the productivity of dry acid soil is necessarily need microorganism inputs. The soilmicroorganism cells have an important role on the plant growth, where their activity is determined by thecondition of environmental growth. Field trial to evaluate two biological agents, i.e (A) consist of Rhizobium,Azospirillum and Aspergillus niger, and (B) consist of vesicular-arbuscular mycorrhyzae was conducted onintegrated crop management of soybean on dry acid soil in Central Lampung. The result showed that theintroduction of the agent was significantly affected on soybean growth and seed yield. In single application ofbio-agent A did not increase seed yield, however the bio-agent B increasing seed yield by 10.88%, and theircombination increasing 5.18% higher than control. The environmental conditions for the microorganism growthare determine by the development of soil microorganism. The different responses of soybean to bio-agent A andbio-agent B was suggested that the soil conditions as the medium of soil microorganism development should beunderstood.Key words: biological agent, seed yield, soybean, acid dry land
PENGARUH KONSENTRASI NATRIUM ALGINAT DAN JENIS BAL TERHADAP VIABILITAS SEL ENKAPSULASI PROBIOTIK BAL Muchsiri, Mukhtarudin; Hamzah, Basuni; Wijaya, Agus; Pambayun, Rindit
Agrin Vol 19, No 2 (2015): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2015.19.2.243

Abstract

Tujuan penelitian ini untuk menguji pengaruh konsentrasi natrium alginat dan jenis BAL terhadap viabilitassel enkapsulasi probiotik BAL. Penyiapan enkapsulasi probiotik BAL menggunakan Rancangan Acak Kelompok(RAK) faktorial, konsentrasi natrium alginat terdiri 1% (A1), 2% (A2) dan 3% (A3). Jenis BAL terdiri B1=Lactobacillus bulgaricus, dan B2= Streptococus thermopylus dengan tiga ulangan. Parameter yang diamati terdiriviabilitas sel BAL, jumlah enkapsul, massa enkapsul, bentuk dan ukuran enkapsul. Hasil penelitian menunjukkanbahwa konsentrasi natrium alginat (w/v), jenis BAL, dan kelompok mempengaruhi nilai viabilitas sel BALdigambarkan dengan persamaan Y = 10,753-0,235X1-1,1007X2+0,085X3+E. Rata-rata viabilitas tertinggi log 9,67CFU/mL pada A3B1 (alginat 3% dan L. bulgaricus) dan terendah pada A1B2 (alginat 1% dan S. thermophylus) log8,82 CFU/mL. Konsentrasi natrium alginat (w/v) dan jenis BAL mempengaruhi jumlah enkapsul digambarkandengan persamaan Y = 363,665-3,233X1+5,667X2+E. Rata-rata jumlah enkapsul tertinggi pada A3B1 (alginat 3%dan L. bulgaricus) 375,33 enkapsul, dan terendah pada A1B2 (alginat 1% dan S. thermopylus) sebesar 360,67enkapsul. Konsentrasi natrium alginat (w/v) dan jenis BAL mempengaruhi massa enkapsul digambarkan denganpersamaan Y = 10,052-0,413X1+1,103X2+E. Rata-rata massa enkapsul tertinggi pada A2B1 (alginat 2% dan L.bulgaricus) 12,659 gram, dan terendah pada A1B2 (alginat 1% dan S. thermopylus) sebesar 9,778 gram. Ukurandiameter panjang enkapsul yang terpendek 7,5mm pada A3B2 (alginat 3% dan S. thermopylus) dan terpanjang10mm pada A2B2 (alginat 2% dan S. thermopylus). Sedangkan diameter melintang berkisar 1,0 mm.Kata kunci: enkapsulasi probiotik, BAL, viabilitas selABSTRACTThe aim of this study were to examine the effect of sodium alginate concentration and types of LAB on cellsviability of LAB probiotic encapsulation. Preparation of LAB probiotic encapsulation using the randomized blockdesign (RBD) factorial, sodium alginate concentration (w/v) comprises 1% (A1), 2% (A2) and 3% (A3). The typesof LAB comprises Lactobacilus bulgaricus (B1), and Streptococous thermopylus (B2) with three replications. Theobserved parameters consisted of cells viability, number, mass, type and size of bead from probioticsencapsulation. The result showed that sodium alginate concentration (w/v) and types of LAB, block effect on cellsviability by the regression equation Y = 10,753-0,235X1-1,1007X2+0,085X3+E. The highest average viability log9.67 CFU/mL on A3B1 (alginate 3% and L. bulgaricus) and the lowest in the A1B2 (alginate 1% and S.thermophylus) log 8.82 CFU / mL. The sodium alginate concentration (w/v) and types of LAB effect on the amountof probiotics encapsulation expressed by the regression equation Y = 363,665-3,233X1+5,667X2+E. The highestaverage number of bead in A3B1 (alginate 3% and L. bulgaricus) 375.33 bead, and the lowest in A1B2 (alginate1% and S. thermopylus) amounted to 360.67 bead. The sodium alginate concentration (w/v) and types of LABeffect on mass of bead represented by the regression equation Y = 10,052-0,413X1+1,103X2+E. The highestaverage mass of bead in A2B1 (alginate 2% and L. bulgaricus) 12.659 grams, and the lowest in A1B2 (alginate 1%and S. thermopylus) amounted of 9.778 grams. While the size of the probiotics encapsulation diameter range fromthe shortest length of 7.5 mm in A3B2 (concentration of 3% sodium alginate and S. thermopylus) and 10 mm inthe longest A2B2 (concentration of 2% sodium alginate and S. thermopylus), with a diameter ranging from 1.0 mmKey words: Probiotics encapsulation, LAB, cells viability
PENGARUH PEMASTEURAN TANAH TUNGGAL ATAU DIGABUNG AGENSIA HAYATI TERHADAP PENYAKIT BUSUK HATI DI PEMBIBITAN PISANG Haryono, Joko; Prihatiningsih, Nur; Wardhana, Rahman A.; Soesanto, Loekas
Agrin Vol 12, No 2 (2008): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2008.12.2.91

Abstract

Tujuan penelitian ini adalah mengetahui pengaruh pemasteuran medium digabung dengan agensia hayatidan agensia hayati yang paling efektif terhadap penyakit busuk hati. Penelitian dilakukan di PT NusantaraTropical fruit, Lampung Timur dengan rancangan Petak Terbagi dan diulang tiga kali. Petak utama adalahmedium dipasteur atau tidak. Anak-petak adalah control dengan air steril, Trichoderma harzianum isolat jahedan pisang, Pseudomonas fluorescens P60, dan Fusarium equiseti diisolasi dari akar pisang. Peubah yangdiamati adalah masa inkubasi, intensitas penyakit, populasi konidium Fusarium akhir, akar berpotensi terinfeksi,tinggi tanaman, jumlah daun, jumlah akar primer dan sekunder, panjang akar, dan berat akar. Hasil penelitianmenunjukkan bahwa perlakuan gabungan memberikan hasil positif khususnya menurunkan intensitas penyakitsampai 43,57%. Agensia hayati T. harzianum isolat pisang dan P. fluroescens P60 yang digabung denganpemasteuran medium dapat menekan intensitas penyakit masing-masing sebesar 63,08 dan 59,75%. Agensiahayati yang paling efektif adalah T. harzianum isolat pisang karena menekan kepadatan Fusarium, meningkatkantinggi tanaman, dan meningkatkan berat akar masing-masing sebesar 41,12, 39,00, dan 98,86%.Kata kunci: busuk hati, bibit pisang, pemasteuran, agensia hayati ABSTRACTThe objectives of this research were to know the effect of pasteurized media combined with biologicalagents and the most effective biological agent on heart rot disease. The research was carried out at PT NusantaraTropical Fruit, East Lampung designed by Split Plot Design and repeated three times. The main plot waspasteurized and unpasteurized media. The subplot was control with sterile water or fungicide, Trichodermaharzianum isolated from ginger or banana, Pseudomonas fluorescens P60, and Fusarium equiseti isolated frombanana root. Variables observed were incubation period, disease intensity, late Fusarium conidial population,potentially infected root, crop height, leave numbers, primary or secondary root numbers, root length, and rootweight. Result of the research indicated that the combination treatments gave positively result specially to reducedisease intensity of 43.57%. Biological agents of T. harzianum banana isolate and P. fluorescens P60 combinedwith the pasteurisation could suppress disease intensity of 63.08 and 59.57%, respectively. The most effectivebiocontrol agent was T. harzianum banana isolate because of suppressing Fusarium density, increasing plantheight, and increasing root weight as 41.12, 39.00, and 98.86%, respectively.Key words: heart rot, banana seedlings, pasteurization, biological agents 
MEKANISME ANTAGONIS LIMA ISOLAT Bacillus subtilis TERHADAP Colletotrichum capsici DAN C. gloeospoiroides IN VITRO Wulansari, Nur Kholida; Prihatiningsih, Nur; Djatmiko, Heru Adi
Agrin Vol 21, No 2 (2017): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2017.21.2.371

Abstract

Colletotrichum capsici dan C. gloeospoiroides adalah jamur patogen penting pada cabai merah yang dapatmenurunkan produktivitas. Upaya untuk mengatasi permasalahan ini yaitu dengan pengendalian hayatimenggunakan Bacillus subtilis. Penelitian ini dilakukan untuk mengetahui daya hambat lima isolat B.subtilis yaituB46, B209, B211, B298, dan B315 terhadap patogen C. capsici dan C. gloeospoiroides asal tanaman cabai.Percobaan laboratorium dilakukan berdasarkan Rancangan Acak Lengkap dengan 5 ulangan. Pengujian in vitrodilakukan menggunakan teknik dual culture pada medium PDA. Hasil penelitian menunjukkan efektifitaspenghambatan C.capsici paling baik pada isolat B209 sebesar 34,25%. Efektifitas penghambatan C.gloeospoiroides pada isolat B211 sebesar 28,89%. Efektifitas penghambatan berpengaruh pada bobot keringmisellium dan morfologi hifa C. capsici dan C. gloeospoiroides. Morfologi hifa C. capsici dan C. gloeospoiroidesmengalami lisis, menebal, dan membengkak.Kata kunci: C. capsici, C. gloeospoiroides, B. subtilis, antagonistik, daya hambatABSTRACTColletotrichum capsici and C. gloeospoiroides are an important pathogen on red chili pepper and causedproductivity losses. Biological control using B. subtilis is an attempt to solve the problem. The objectives of thisstudy is to determines the inhibition ability of five B. subtilis isolates, i.e. B46, B209, B211, B298, dan B315against C. capsici and C. gloeospoiroides pathogens from chili pepper. Laboratory experinments arranged incomplete randomized design with five replication. Dual culture method used PDA medium on in vitro test. Resultshowed the best inhibition effectiveness of C.capsici on B209 isolates at 34.25%. The best inhibition effectivenessof C. gloeospoiroides on B211 isolates at 28,89%. The inhibition effectiveness affects mycellium dry weight andhypha morphology of C. capsici and C. gloeospoiroides. Hypha morphology of C. capsici and C. gloeospoiroidesis lysis, thickening, and swelling.Key words: C. capsici, C. gloeospoiroides, B. subtilis, antagonistic, inhibitor ability
MENINGKATKAN INDEKS PERTANAMAN PADI SAWAH MENUJU IP PADI 400 Supriatna, Ade
Agrin Vol 16, No 1 (2012): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2012.16.1.123

Abstract

Salah satu program Badan Litbang Pertanian dalam peningkatan produksi beras nasional adalah programIP Padi 400. Program IP.padi 400 ditempuh dengan dua strategi yaitu rekayasa teknologi dan rekayasa sosialuntuk optimalisasi ruang dan waktu sehingga indeks pertanaman dapat dimaksimalkan. Masalahnya bagaimanaimplementasi peningkatan indeks pertanaman tersebut di tingkat lapangan. Kajian ini dilaksanakan tahun 2009 diProvinsi Sulawesi Selatan dan Jawa Tengah, keduanya merupakan lokasi sasaran pengembangan IP Padi 400.Tujuan pengkajian, yaitu; (a) menginformasikan pengertian IP Padi 400, (b) upaya rekayasa teknologi, (c) upayarekayasa sosial, dan (d) mengsintesis syarat keharusan dalam pengembangan IP Padi 400. Hasil menunjukanbahwa dalam pengembangan Indeks pertanaman empat kali padi setahun, layak dilakukan dengan beberapasyarat keharusan: (a) aspek teknis meliputi penggunaan varietas padi sangat genjah (VUSG), teknik persemaian”culikan”, penggunaan alsintan, introduksi alat dekomposer dan monitoring hama penyakit; (b) aspek ekonomismeliputi efisiensi biaya produksi, tingkat produksi dan pendapatan lebih tinggi dari eksisting, mengoptimalkankelompok panen dan kelompok tanam serta upaya stabilitas harga gabah; dan (c) aspek kelembagaan meliputimengoptimalkan kelompok tani, dukungan lembaga keuangan mikro, penyediaan teknologi yang dibutuhkan dandukungan kebijakan pemerintah. Sepanjang kondisi ideal belum bisa terrealisasi, maka IP Padi 300 lebih layakuntuk dikembangkan daripada IP Padi 400. Program ini dapat dijadikan alternative terobosan kebijakanmendorong peningkatan produksi beras nasional.Kata kunci: Padi sawah, indeks pertanaman ,rekayasa teknologi dan sosial.ABSTRACTOne of AARD pogram in increasing rice production was a program of rice cropping index of 400. Thisprogram will be implemented through two strategies that is technological and social assessments to shorten timeand space so that a cropping index can be maximized. This paper is a review of strategy for improving thecropping index of lowland rice to reach cropping index of 400. The objectives of study; (a) to inform theunderstanding of rice cropping indek 400, (b) to describe the effort of technological assessment, (c) describe theeffort of social assessment, and (d) to synthesis the necessary condition in developing the rice cropping index of400. The results showed that the rice cropping index of 400 can be conducted with several necessary conditionsnamely: (a) technical aspects including the uses of superior varieties, seedling technique “culikan”, agriculturalmechanization, introduction of decomposer and monitoring of pest and disease; (b) the economic aspectincluding the efficiency of production cost, higher production and revenue than existing, optimalization ofharvest and planting groups and stability of the rice price; and (c) institutional aspect including optimalizationof farmer groups, micro financial institution, provision of technology required by farmers, and governmentspolicies. As long as the ideal condition has been not created for developing the cropping index of 400, thecropping index of 300 is more feasible to be developed either by technical, social, economical and theenvironment aspects. This program can be used as an alternative policy for supporting the national riceproduction.Keywords: Lowland rice, cropping index, technology and social assessments
PENGARUH FORMULA TRICHODERMA HARZIANUM-MIKORIZA DAN PUPUK INORGANIK TERHADAP SERANGAN FUSARIUM OXYSPORUM PADA TANAMAN JAHE MUDA u, Darini S; Rokhminarsi, E.; Januwati, M.
Agrin Vol 17, No 1 (2013): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2013.17.1.194

Abstract

Tujuan penelitian mengetahui pengaruh formula T. harzianum-mikoriza dan pupuk inorganik terhadapserangan Fusarium oxysporum pada tanaman jahe muda. Penelitian rumah kasa, media tanah Ultisols, dan jenisjahe gajah. Rancangan percobaan Second Order Central Composite Design (SOCCD), analisa menggunakanmetode Respons Surface Methodology (RSM). Perlakuan aplikasi: 1) formula T. harzianum-mikoriza (0, 10, 20,30 dan 40 g/ tanaman); 2) pupuk N, P dan K (0, 25%, 50%, 75%, 100% dari dosis anjuran), dan 3) dosis pupukdaun (0; 0,75; 1,5; 2,25 dan 3,0 g/liter air). Kombinasi sebanyak 20 pot (fraksinasi), dilakukan kombinasi unitdengan fungisida dan tanpa fungisida. Semua unit diinfestasi suspensi konidia F. oxysporum (13,41 x 106konidia/ml). Variabel pengamatan: masa inkubasi, intensitas penyakit, kerapatan populasi T. harzianum, tinggitanaman, jumlah daun, dan jumlah anakan. Hasil penelitian: formula T. harzianum-mikoriza 23,97g/tan dapatmenekan penyakit layu Fusarium dan berpengaruh baik terhadap pertumbuhan jahe, disamping menekanpemakaian pupuk N, P dan K hingga 51,12% dan pupuk daun 36,91% dari dosis anjuran. Kombinasi tersebutmemberikan masa inkubasi, intensitas penyakit, kerapatan spora per gram tanah, tinggi tanaman, jumlah daun,dan jumlah anakan per rumpun berturut-turut sebesar 65,30 hari setelah investasi Fusarium, 6,31%, 1,4x108spora per gram tanah, 43,8 cm, 14,76 helai dan 17,24 anakan pada tanaman umur 9 minggu, percobaan tanpafungisida. Formula Trichoderma harzianum-mikoriza hasil penelitian ini bisa digunakan sebagai alternatiffungisida dan pupuk sintetis, yang mudah diaplikasikan oleh petani, setelah dilakukan pengujian lapang.Kata kunci: jahe, Trichoderma harzianum, mikoriza, pupuk sintetisABSTRACTThe study objective was to know the effect of Trichoderma harzianum-Mycorrhizal-fungi formula andsynthetic fertilizer, used on Fusarium oxysporum growth. Pot experiment was conducted in screen house withUltisols as media, to grow Elephant ginger. The SOCCD (Second Order Central Composite Design), andResponse Surface Method (RSM) were employed. Application of formula T. harzianum-mycorrhizal (0%, 25%,50%, 75%, 100%), reduction of fertilizer N, P and K (0%, 25%, 50%, 75%, 100) and doses of fertilizer throughleaf (0%, 25%, 50%, 75%, 100) were tested. There was fractionation way which produced 20 combinations,where then combined with and without fungicide application. All units then invested with pathogen F.oxysporum (13,41x106konidia/ml). The variables measured: period of initial symptom, disease intensity, finalpopulation density of T. harzianum, plant height, leaf number, and number of tillers. The results showed: dosageformula T. harzianum-mycorrhizae 23.97 g per plant was able to suppress Fusarium wilt disease and itimproved growth of ginger and reduce fertilizer dose. The formula without fungicide gave: incubation period,disease intensity, spores density/g of soil, plant height, leaf number, and tillers number/hill, that was,respectively in the order, 30 days after Fusarium investment, 6.31%, 1.4 x108 spores/g of soil, 43.8 cm, 14.76pieces, and 17.24 strands of saplings in 9 weeks old plants. Formula of T. harzianum-mycorrhizal wasconcluded to be used as fungicides and synthetic fertilizers, which easily be applied by the farmer, and can beused after field testing.Key words: ginger, Trichoderma harzianum, mycorrhizae, synthetic fertilizer
POTENSI CAMPURAN MIKROBA ANTAGONIS UNTUK MENGENDALIKAN NEMATODA PURU AKAR (Meloidogyne incoqnita) PADA TANAMAN TOMAT Manan, Abdul; Mugiastuti, Endang
Agrin Vol 19, No 1 (2015): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2015.19.1.343

Abstract

Penelitian ini betujuan mengetahui kemampuan campuran mikroba antagonis Bacillus B8,B11,Pseudomonas fluorescens P8 dan Trichoderma untuk mengendalikan Meloidogyne incoqnita padatanaman tomat. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK). Perlakuan yangdicoba adalah : campuran Bacillus sp. B8, B 11 dan Trichoderma sp., campuran Bacillus sp. B 8, P.flourescens P8 dan Trichoderma sp. , pestisida kimia sintetik, serta kontrol. Hasil penelitianmenunjukkan bahwa : campuran mikroba antagonis Bacillus B11, Pseudomonas fluorescens P8 danTrichoderma mampu menekan 48,78% populasi nematoda dalam tanah serta menekan tingkatkerusakan akar, namun belum mampu meningkatkan pertumbuhan tanaman tomat.Kata kunci: Meloidogyne incoqnita, mikroba antagonis, tomatABSTRACTThe aim of this research was to know the capability mixed antagonistic miccrobes of Bacillus sp.B8, B11, Pseudomonas fluorescens P8 and Trichoderma against Meloidogyne incoqnita on tomato.This research was used Randomized Block Design (RBD). The treatment consist of mixed of Bacillussp. B8, B 11 and Trichoderma sp., mixed of Bacillus sp. B 8, P. flourescens P8 and Trichoderma sp.,synthetic pesticide, and control. The results of this research showed that mixed Bacillus B11,Pseudomonas fluorescens P8 dan Trichoderma sp. could suppressed 48.78% of nematode population inthe soil and suppressed the root damage, but could not increased the tomato growth.Key words: Meloidogyne incoqnita, antagonistic microbes, tomato
YIELD LOSSES ASSOCIATED WITH PEANUT MOTTLE VIRUS (PtMtV) INFECTION ON PEANUT PLANTS GIVEN DIFFERENT REGIMES OF UREA AND POTASSIUM CHLORIDE FERTILIZERS P. Sulaksono
Agrin Vol 11, No 1 (2007): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2007.11.1.65

Abstract

Penyakit virus belang (PtMtV) pada kacang tanah dapat tertular lewat biji dan merupakan penyakityang sebarannya mendunia. Beberapa orang telah melaporkan kehilangan hasil kacang tanah karena penyakitini, namun belum ada informasi yang jelas apakah pemberian pupuk unsur hara makro akan meningkatkanatau menurunkan kehilangan hasil tanaman yang terinfeksi virus tersebut. Untuk mempelajari hubunganantara kehilangan hasil karena PtMtV dengan berbagai rejim pemupukan nitrogen dan potassium telahdilakukan penelitian rumah kasa dengan menggunakan biji kacang tanah dari daerah Biromaru dan Tavaeliyang terinfeksi oleh PtMtV. Data yang dikumpulkan merupakan parameter hasil dan pertumbuhan tanaman.Penghitungan lanjut pada data dilakukan untuk menentukan pertambahan hasil yang diakibatkan olehaplikasi pupuk dan juga kehilangan hasil karena infeksi pada tanaman yang diberi pupuk tersebut. Data yangdiperoleh menunjukkan bahwa rejim pemupukan tertentu meningkatkan dan rejim lain menurunkankehilangan hasil yang diakibatkan oleh penyakit. Kehilangan yang terbesar dalam setiap komponen hasilkarena penyakit cenderung berhubungan dengan aplikasi urea+SP36+KCl pada dosis 100+100+50 (kg/ha).Rejim pemupukan ini didapatkan juga berhubungan dengan terjadinya kehilangan terbesar dalam jumlahdaun dan tinggi tanaman. Sebaliknya, kehilangan hasil yang lebih rendah daripada yang diperoleh denganpemupukan pada dosis rekomendasi (50 urea + 100 SP36 + 50 KCl) (kg/ha) cenderung berkaitan dengandosis nitrogen yang lebih rendah (25 urea + 100 SP36 + 50 KCl) (kg/ha) atau dengan dosis potassium yanglebih tinggi (50 urea + 100 SP36 + 75 KCl) (kg/ha).Kata kunci: virus, mottle, kacang, pupuk, hasil, kehilangan, hara. ABSTRACTPeanut mottle virus (PtMtV) is worldwide soil born disease on peanut plants. While some reportedyield losses due to the disease, it is not clear whether application of major nutrient fertilizers will increase ordecrease yield losses of the infected plant. A screen-house experiment was set up using infected peanut seedscollected from Biromaru and Tavaeli area to study the association of yield losses within various regimes ofnitrogen and potassium fertilizer application. Data were collected on several plant yield and growthparameters. Further computations were carried out on the data for determining yield increments given by thefertilizers applications and also yield losses imposed by infection on plants added with the fertilizers. Thedata obtained showed that certain fertilizers regimes increased whereas other decreased yield losses imposedby the disease. The losses in each yield component tended to be highest with the application ofurea+SP36+KCl at 100+100+50 (kg/ha). This regime of fertilizers was also associated with highest losses inleaf number and plant height. On the contrary, yield losses lower than that observed with the recommendedrate (50 urea + 100 SP36 + 50 KCl) (kg/ha) tended to be associated with lower rate of nitrogen (25 urea +100 SP36 + 50 KCl) (kg/ha) or with higher rate of potassium (50 urea + 100 SP36 + 75 KCl) (kg/ha).Key words: virus, mottle, peanut, fertilizers, losses, yield, nutrient 

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