cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ahadiyat Yugi R., SP., MSi., D.Tech.Sc.
Contact Email
psi.faperta@gmail.com
Phone
-
Journal Mail Official
ahadiyat_yugi@yahoo.com
Editorial Address
-
Location
Kab. banyumas,
Jawa tengah
INDONESIA
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
 8   9   10   11   12 
KERAGAAN FENOTIP DAN BEBERAPA PARAMETER GENETIK HASIL DAN KARAKTER AGRONOMI ENAM PADI HIBRIDA DI LAHAN KERING MASAM Bambang Sutaryo; Tri Sudaryono
Agrin Vol 14, No 2 (2010): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2010.14.2.106

Abstract

Tujuan penelitian adalah untuk mengevaluasi keragaan parameter fenotip dan genetik hasil serta karakter agronomi dari enam padi hibrida di lahan masam Jasinga, Jawa Barat, selama musim kemarau (MK), dari bulan April hingga Agustus 2008. Enam padi hibrida yaitu IR58025A/Kapuas, IR68885A/Kapoas, IR58025A/Mendawak, IR68885A/Batanghari, IR58025A/Inderagiri, IRS 8025A/Lambur dan varietas pembanding lokal Hawara Bunar dirancang menggunakan Rancangan Acak Kelompok dengan tiga ulangan. Hasil penelitian menunjukkan bahwa hasil gabah empat padi hibrida yaitu IRS8025A/Kapuas (6,8 t/ha), IR68885A/Kapuas (6,6 t/ha), IRS 8025A/Mendawak (6,6 t/ha) dan IR68885A/Batanghari (6,4 t/ha) lebih tinggi dibandingkan dengan varietas kontrol Hawara Bunar (4,9 t/ha). Nilai variabilitas genetik yang luas terdapat pada hasil gabah (0,12), umur tanaman (16,34), tinggi tanaman (20,48), jumlah anakan produktif per rumpun (5,14), dan jumlah gabah isi per malai (41,37). Nilai duga heritabilitas tinggi terdapat pada hasil gabah (0,92), umur tanaman (0,68), tinggi tanaman (0,63), jumlah anakan produktif (0,95) dan jumlah gabah isi per malai (0,95). Korelasi genetik dan korelasi fenotip positif nyata antara hasil gabah dengan jumlah gabah isi per malai (0,05*), umur tanaman (0,25*), tinggi tanaman (0,12*), dan jumlah anakan produktif per rumpun (0,07*). Kata kunci : keragaan fenotip, genetik, agronomi, padi hibrida, lahan kering masam ABSTRACT The objective of the experiment was to evaluate phenotypic performance and genetic parameters of yield and agronomic traits of six hybrids rice at acidic dryland in Jasinga, West Java, during dry season of April-August 2008. Six hybrids rice such as IR58025A/Kapuas, IR68885A/Kapuas, IRS 8025 A/Mendawak, IR68885A/Batanghari, IR58025A/Inderagiri, IRS8025A/Lambur and Hawara Bunar (control) were designed by using Randomized Complete Block Design in three replications. The results showed that yield of four hybrids rice namely IRS8025A/Kapuas (6.81 ha"1), IR68885A/Kapuas (6.61 ha"1 ), IRS8025A/Mendawak (6.6 t ha"1) and IR68885A/Batanghari (6.4 t ha"1) were higher than that of Hawara Bunar (4.9 t ha"1). Broad genetic variabilities were found for grain yield (0.12), plant maturity (16.34), plant height (20.48), number of productive tiller per hill (5.14), and filled grain per panicle (41.37). High heritability estimate was found for grain yield (0.92), plant maturity (0.68), plant height (0.63), number of productive tiller per hill (0.95), and filled grain per panicle (0.95). Genetic and phenotypic correlation was found positive and significant between grain yield and filled grain per panicle (0.05*), plant maturity (0,25*), plant height (0.12*), and productive tiller per hill (0.07*). Key words: phenotypic, genetic, agronomic traits, hybrid rice, acidic dryland
KEBERADAAN HAMA DAN PENYAKIT PENTING TANAMAN KENTANG PADA BEBERAPA SISTEM BUDIDAYA Herminanto Herminanto; A. Munadjat; T. Widjojoko
Agrin Vol 18, No 1 (2014): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2014.18.1.209

Abstract

Penelitian telah dilakukan untuk mengetahui hama dan penyakit penting serta hasil tanaman kentang yang diusahakan dengan sistem budidaya berbeda. Kegiatan dilaksanakan di Desa Serang Kecamatan Karangreja Kabupaten Purbalingga mulai bulan Mei – September 2013.  Penelitian menggunakan rancangan acak kelompok (RAK) dengan empat perlakuan dan masing-masing diulang enam kali.  Perlakuan terdiri atas K0 = kontrol, K1 = kentang semi organik (NPK anorganik, pupuk kandang kotoran ayam, pestisida organik), K2 = kentang organik (pupuk kandang kotoran ayam, POC, trichokompos, pestisida organik), K3 = kentang konvensional (NPK anorganik, pestisida sintetik).  Variabel yang diamati meliputi: jenis dan populasi hama penting, intensitas serangan hama, jenis dan populasi musuh alami hama, jenis patogen penting, intensitas penyakit, dan bobot umbi.  Hasil penelitian menunjukkan bahwa pada tiga sistem budidaya kentang ditemukan hama penting pada umbi kentang yaitu uret (Holotrichia spp.) dan orong-orong (Gryllotalpa spp.) dengan intensitas serangan ringan. Dijumpai patogen jamur Phytophthora infestans yang menyebabkan penyakit hawar daun kentang dan bakteri Ralstonia solanacearum sebagai penyebab penyakit layu bakteri dengan intensitas penyakit yang ringan. Hasil panen kentang organik mencapai 17,94 ton/ha, kentang petani (konvensional) 17,40 ton/ha, dan kentang semi organik sebesar 17,69 ton/ha. Kata kunci: kentang, sistem budidaya, hama-penyakit penting ABSTRACTA research has been conducted to know important pests and diseases and yield of potatoes palnteed on different cultivation systems.  It was done at Serang Village Karangreja Sub district Purbalingga Regency, starting from May to September 2013.  The research used randomized complete block design (RCBD) set in four treatments of cultivation systems and six replicates.  The treatments consisted of K0 = control, K1 = semi organik (inorganik NPK, chicken manure, liquid organik fertilizer or LOF, trichocompost, organik pesticide), K2 = organik (chicken manure, LOF, trichocompost, organik pesticide), and K3 = conventional (inorganik NPK, synthetic pesticides).  Variables observed were sort and populations of crucial pests found, pest attack intensity, natural enemies, sorts of important pathogens, disease intensity, and tuber weight. Results of the research performed that the pests found on the three cultivation systems were grubs (Holotrichia spp.) and mole crickets (Gryllotalpa spp.) invading tubers at light attack intensities. The fungus Phytophthora infestans causing leaf blight disease and the bacterium Ralstonia solanacearum causing tuber damage were also discovered in light disease intensity.  Yields of organic, conventional and semi organic potatoes respectively reached 17.94, 17.40, and 17.69 tones/hectare. Key words: potatoes, cultivation systems, important pests and diseases 
PENINGKATAN KETAHANAN BAWANG MERAH TERHADAP PENYAKIT LAYU FUSARIUM MELALUI INDUKSI KETAHANAN DENGAN ASAM SALISILAT SECARA INVITRO Muhammad Juwanda; Khusnul Khotimah; Mohamad Amin
Agrin Vol 20, No 1 (2016): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2016.20.1.310

Abstract

Fusarium whitere disesase or moler is a major disesase on shallot that is caused by Fusarium oxypsporumf. Sp. Cepae (Foc), it is spread soil mushroom kind and generally sistemacally hence it’s dificult controled byfungicid. Suffer caused by this moler disesase can reache 50% moreover can cause failed fiver. For that reasonit needs the use of varietes endurance of moler disesase and high productivity. Endurance induction is one of themethods to get shallot cultivar endure fusarium whietere disease. Endurance induction can be done in vitro withthe inducing agent is chemist matter likes salisilic acid. For knowing the respon of salisilyc acid in inducing theindurance is done by using fusarat acid as selector matter to get endurance planlet. This research is done torecogize the respon of bud Bima cultivar shallot of Brebes in vitro againts the effectity of salisilyc acid of vareitesof concentration (0 ppm, 2.5 ppm, and 7.5 ppm) in inducing endurance then it’s done selection to get endurancecharacter of disease by exogen salisilyc acid able to impove shallot planlet endurance that is showen by descentintensities of fusarium attact, descending planlet endurance status form susceptibe become moderate. The bestconcentration of salisilyc acid in inducing onion planlet endurance is 5 ppm and 7.5 ppm.Key words: induction of endurance, salsilyc acid, fusarat acid, shallot.
PENANDA MORFOLOGI DAN FISIOLOGI KEDELAI TOLERAN TERHADAP GULMA TEKI (Cyperus rotundus) Hidayat, Ponendi; Fatichin, Fatichin
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.2010.14.1.97

Abstract

ABSTRAKTeki (Cyperus rotundus) adalah salah satu gulma utama pada areal pertanaman kedelai. Penelitian inibertujuan mengetahui penampilan kedelai pada beberapa tingkat cekaman Cyperus rotundus; mengetahuikeeratan hubungan antara karakter morfologi/fisiologi dan toleransinya terhadap Cyperus rotundus; menentukankarakter morfologis dan fisiologis apa saja yang dapat dijadikan sebagai penanda toleransi kedelai terhadapCyperus rotundus; dan mengetahui tingkat toleransi genotip kedelai yang diuji terhadap Cyperus rotundus.Percobaan dilaksanakan di kebun percobaan Fakultas Pertanian UNSOED Purwokerto. Percobaan dilaksanakanberdasarkan tata ruang RAK (Rancangan Acak Kelompok). Dua faktor perlakuan berupa: 1) gulma Cyperusrotundus yaitu tingkat kerapatan tanpa C. rotundus (G0), kerapatan 15 C. rotundus / polibag (G1), kerapatan 30C. Rotundus / polibag (G2), kerapatan 45 C. Rotundus / polibag (G3); 2) tujuh genotipe kedelai (Raung, Lokon,Wilis, Burangrang, Cikuray, dan Petek). Percobaan diulang 3 kali. Hasil penelitian menunjukkan bahwa gulmateki dapat menurunkan nilai rata-rata variabel panjang akar, tinggi tanaman, jumlah cabang produktif pertanaman, jumlah polong isi per tanaman, jumlah biji per tanaman dan bobot biji per tanaman. Karakter fisiologiyang dapat dijadikan penanda toleransi terhadap gulma teki adalah Laju Tumbuh Tanaman periode pengamatan35-42 hst, Laju Asimilasi Bersih periode pengamatan 35-42 hst dan jumlah klorofil a. Sedangkan pada karaktermorfologi adalah panjang akar, jumlah polong isi per tanaman, jumlah biji per tanaman, bobot 100 biji pertanaman, dan bobot biji per tanaman. Varietas kedelai yang memiliki tingkat toleransi terhadap gulma tekitertinggi berdasarkan STI adalah Lokon sedangkan terendah adalah Lawit.Kata Kunci: penanda morfologi, penanda fisiologi, kedelai, teki ABSTRACTCyperus rotundus is a main weed of soybean plant area. The research objectives are to know of soybeanperformances on several Cyperus rotundus stressed level; to know the correlation betweenmorphological/physiological character and Cyperus rotundus stress tolerance; to know morphological /physiological characters would become marker for Cyperus rotundus tolerance; and to know the level ofsoybean tolerance on Cyperus rotundus stressed. The research was conducted at Agriculture Faculty of JenderalSoedirman University, Purwokerto. Randomized Completely Block Design (RCBD) was used in this experimentwith three replications. The experiment has two treatments i.e. the level of Cyperus rotundus stressed (G0, G1,G2, G3); second treatment is soybean varieties (Raung, Lokon, Wilis, Burangrang, Cikuray, and Petek). Theresult of the research showed that Cyperus rotundus able to decrease mean of length of root, plant height,number of productive branch, number of contained pod per plant, number of seed per plant, and weight seed perplant. The physiological characters that become marker for Cyperus rotundus tolerances are Plant Growth Rate(35-42 day after planted); Net Assimilation Rate (35-42 day after planted); and Chlorophyll a contained. Themorphological characters that become marker for Cyperus rotundus tolerances are length of root, number ofcontained pod per plant, number of seed per plant, and weight seed per plant. The highest tolerance varietybased on STI is Lokon while the lowest is Lawit.Key words: morphology indicator, phisiology indicator, soybean, cyperus rotundus 
PERTUMBUHAN DAN HASIL BEBERAPA GENOTIP KEDELAI BERBIJI BESAR PADA CEKAMAN KEKERINGAN DI BERBAGAI STADIA PERTUMBUHAN Widiatmoko, Teguh; Agustono, Tridjoko; Imania, Milla
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.2012.16.1.129

Abstract

Budidaya kedelai kebanyakan dilakukan setelah musim tanam padi, sehingga tanaman kedelai seringkalimengalami cekaman kekeringan pada beberapa stadia kritis, seperti fase pembungaan dan pengisian polong.Penelitian ini dilaksanakan dengan tujuan untuk mengetahui potensi hasil dari galur harapan kedelai yangmemiliki karakter berbiji besar yang ditanam dengan cekaman kekeringan, mengetahui perbedaan responpertumbuhan dan hasil antar galur dan varietas tersebut terhadap cekaman kekeringan, dan saat pemberianperlakuan cekaman kekeringan yang masih dapat mendukung tanaman kedelai tumbuh dan berproduksi denganbaik.Penelitian ini telah dilakukan pada bulan Maret hingga Juni 2011 di rumah plastik Fakultas Pertanian,Universitas Jenderal Soedirman, untuk mengetahui pertumbuhan dan hasil genotip kedelai berbiji besar yaitugalur L/S:B6-G1, L/S:B6-G3, varietas Grobogan, Burangrang, dan varietas Agromulyo pada cekaman sebesar50% kapasitas lapang, yaitu: kontrol (100%), sejak 25 hari setelah tanam/sebelum berbunga/R1, dan sejak 50hari setelah tanam/sebelum pengisian polong/R5. Hasil penelitian menunjukkan bahwa Galur L/S:B6-G1merupakan genotip yang memiliki produksi paling baik dalam kondisi cekaman kekeringan 50% kapasitaslapang sejak 50 hst, yaitu 10,83 g biji per tanaman. Terdapat perbedaan respon antar genotip kedelai terhadapsaat terjadinya cekaman kekeringan, Galur L/S:B6-G1 dan Varietas Argomulyo merupakan genotip memilikiproduksi paling baik pada kadar air tanah 50% kapasitas lapang sejak 50 hst. Kedelai masih mampu berproduksibaik pada kadar air tanah 50% kapasitas lapang sejak 50 hst (fase pengisian polong/R5).Kata kunci: stadia pertumbuhan, kekeringan, kapasitas lapang, genotip, hasilABSTRACTMost of soybean cultivation was held after rice cultivating season, so that soybean crop often sufferingdrought stress on several critical stages of plant growth, such as at flowering and pod filling phase. Thisresearch aims to know the potential yield of big grains soybean line on drought stress, the growth and yield ofbig grains soybean line and varieties on drought stress, when the drought stress still able to support the soybeancrop to growth and produce well. Research was conducted in March until June 2011 at plastic house ofAgriculture Faculty, Jenderal Soedirman University to determine soybean genotypes growth and production i.e.L/S:B6-G1, L/S:B6-G3 line, Grobogan, Burangrang, and Agromulyo varieties under 50% of field capacity thatwere control (100%), since 25 days after planting/before flowering/R1, and 50 days after planting/before podfilling stage/R5. The results of the research showed that L/S:B6-G1 line has the best yield on 50% field capacitysince 50 days after planting, that was 10,83 g of seed per plant. There were different responses between soybeangenotypes and critical time of drought stress, L/S:B6-G1 line and Argomulyo were the best genotypes onproducing by 50% field capacity of soil moisture. Soybean crop was still able to produce well in soil watercontent that stressed 50% of field capacity since 50 days after planting (pod filling stage/R5).Key words: growth stages, drought, field capacity,genotype,yield
PENGARUH TEPUNG DAUN SIRSAK (Annona muricata) TERHADAP MORTALITAS DAN PERKEMBANGAN KUMBANG Callosobruchus analis F. PADA BIJI KEDELAI DAN KACANG HIJAU Harinta, Yos Wahyu
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.2013.17.1.200

Abstract

Tujuan penelitian untuk mengetahui: (i) pengaruh tepung daun sirsak terhadap mortalitas danperkembangan Callosobruchus analis serta kerusakan dan penyusutan biji kedelai dan kacang hijau, dan (ii)mendapatkan dosis tepung daun sirsak yang paling efektif untuk mengendalikan Callosobruchus analis pada bijikedelai dan kacang hijau. Eksperimen menggunakan Rancangan Acak Lengkap pola faktorial. Perlakuan terdiriatas kedelai (A) dan kacang hijau (B) dan dosis tepung daun sirsak yakni 1 g/100 g; 2 g/ 100 g; 3 g/ 100 g, dankontrol/tanpa perlakuan. Tiap Perlakuan diulang lima kali. Parameter yang diamati: persentase mortalitasimago, jumlah telur yang diletakkan, jumlah telur yang menetas menjadi imago, persentase kerusakan biji, danpersentase penyusutan bobot biji. Hasil penelitian menunjukkan bahwa tepung daun sirsak: (i) berpengaruhterhadap mortalitas dan perkembangan C. analis pada biji kedelai dan kacang hijau, (ii) dapat mengurangiterhadap kerusakan dan penyusutan bobot biji terhadap serangan C. analis. Namun demikian, belum didapatkandosis tepung daun sirsak yang efektif untuk mengendalikan kumbang C.analis. Tepung daun sirsak mulai dosis 2g/100 g biji dapat menurunkan perkembangan kumbang C. analis, serta dapat mengurangi kerusakan danpenyusutan bobot biji akibat kumbang C. analis saat di penyimpanan.Kata kunci : tepung daun sirsak (Annona muricata); Callosobruchus analis F., kematian, perkembangan.ABSTRACTObjectives of this study were to know the effect of soursop leaf on mortality and development ofCallosobruchus analis F., and how damage and reduction on soybean and mungbean grains seed caused by C.analis F, as well., and (to obatain the effective dosage of soursop leaf flour to control C. analis on soybean andmungbean grains. The research was implemented experimentally by using complete randomized design (CRD),by three replicates. Treatment was consisted of soybean and mungbean and the dosage of soursop leaf flour i.e. 1g/100 g , 2 g/100 g, 3 g/100g, and control (without treatment). The observed variables were: the percentage ofthe imago mortality, the percentages of seed damage, and the reduction of the seed weight. The result indicatedthat: (i) the soursop leaf flour gave significant effect on mortality of C.analis on soybean and mungbean, and (ii)reduced damage and decrease of the seed weightdue to C. anali. Unfortunatelly, the effective dosage of thesoursop leaf to control C.analis was not found yet. Flour leaf dosage 2 g/100 g seeds could decreased thedevelopment of C.analis and reduced the percentage of the damage and seed weight loosed caused by humblebeeC.analis in the storage.Key words: the flour of soursop leaf (Annona muricata); Callosobruchus analis F., mortality, development
KERAGAMAN DAN KELIMPAHAN SERANGGA HAMA TANAMAN PADI (Oryza sativa L.) DI DATARAN RENDAH JATISARI, KARAWANG, JAWA BARAT Sianipar, Martua Suhunan; Djaya, Luciana; Simarmata, Daniel P
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.2015.19.2.240

Abstract

Padi merupakan komoditas tanaman pangan yang penting di Indonesia. Salah satu faktor penghambat dalambudidaya padi adalah adanya serangan hama. Teknis budidaya memiliki pengaruh yang sangat kuat terhadapkeragaman dan kelimpahan serangga. Penelitian ini bertujuan untuk mempelajari keragaman dan kelimpahanserangga hama pada tanaman padi di dataran rendah Jatisari, Karawang, Jawa Barat dan dilakukan dengan metodesurvei. Adapun pengamatan menggunakan perangkap kuning, perangkap cahaya, jaring ayun, dan pengambilansecara langsung pada pertanaman padi fase vegetatif dan generatif. Hasil penelitian menunjukkan, terdapat 10spesies serangga hama yang menyerang tanaman padi di dataran rendah Jatisari, Karawang Jawa Barat yaituScirpophaga innotata (Lepidoptera: Pyralidae), Scirpophaga incertulas (Lepidoptera: Pyralidae), Cnaphalocrocismedinalis (Lepidoptera: Pyralidae), Nephotettix virescens (Homoptera: Cicadellidae), Hydrellia philippina(Diptera: Ephydridae), Nilaparvata lugens (Homoptera: Delphacidae), Oxya spp. (Orthoptera: Acrididae),Leptocorisa oratorius (Hemiptera: Alydidae), Sogatella furcifera (Homoptera: Delphacidae), dan Scotionopharalurida (Hemiptera: Pentatomidae). N. lugens adalah serangga hama yang paling banyak ditemukan, yaitu 86individu dan yang paling sedikit ditemukan adalah Oxya spp. (19 individu).Kata kunci: keragaman, kelimpahan, serangga hama padi, dataran rendah Jatisari, Kabupaten KarawangABSTRACTRice is an important food commodity in Indonesia. One of the inhibiting factors in the cultivation of rice isthe existence of pest. Cultivation technique has a very strong impact to diversity and abundance of insect. Thisstudy aimed to inventory the insect pest of rice field in lowland Jatisari, Karawang, West Java. This study wasconducted by survey method. Observations by using yellow trap, light trap, sweep net and direct capture.Observations were done in rice field vegetative and generative stadia. The result showed, there were 10 speciesof insect pest that attacked rice in the field. Namely Scirpophaga innotata (Lepidoptera: Pyralidae), Scirpophagaincertulas (Lepidoptera: Pyralidae), Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), Nephotettix virescens(Homoptera: Cicadellidae), Hydrellia philippina (Diptera: Ephydridae), Nilaparvata lugens (Homoptera:Delphacidae), Oxya spp. (Orthoptera; Acrididae), Leptocorisa oratorius (Hemiptera: Alydidae), Sogatellafurcifera (Homoptera: Delphacidae), and Scotionophara lurida (Hemiptera: Pentatomidae). Nilaparvata lugenswas the insect pest with the biggest amount, 86 individuals and with the smallest amount was Oxya spp. (19individuals).Key words: diversity, abundance, insect pest, Oryza sativa L, lowland Jatisari
PENDUGAAN HASIL TANAMAN BAYAM (Amaranthus tricolor L.) SECARA HIDROPONIK DENGAN JARINGAN SYARAF TIRUAN (ANN) E. Sumarni; Suroso Suroso; A. Margiwiyatno
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.2007.11.1.58

Abstract

Artificial Neural Network (ANN) dapat digunakan sebagai pendugaan output dari suatu input yang tidakdiketahui hubungannya. Tujuan dari penelitian ini adalah training data dengan jaringan ANN untukpendugaan hasil tanaman bayam secara hidroponik berdasarkan data parameter tanaman bayam (tinggitanaman, jumlah cabang, dan bobot basah total). Data yang diperoleh dari pengukuran dibagi menjadi 2kelompok yaitu 7 set data digunakan untuk training dan 5 set data digunakan untuk validasi. Validasimempertimbangkan nilai Standar Error of Prediction (SEP), Coefisien of Variation (CV), dan perbedaanantara hasil pengukuran dengan penduga (d). Iterasi sebanyak 30000 kali digunakan dalam training. Hasilvalidasi model jaringan syaraf tiruan berupa nilai SEP, CV dan nilai d (bias) yang rendah bagi parametertanaman bayam yang digunakan. Model ANN ini dapat digunakan untuk pendugaan hasil tanaman bayamdengan hidroponik.Kata kunci : ANN, bayam, EC, hidroponik, iterasi ABSTRACTArtificial Neural Network (ANN) could be used as a tool for predicting output from input which itrelationship with the output is unknown. This research was aimed at training of the network model by usingparameter data of spinach growth (height, branch, leaf, and wet weight) grown in a hydroponics system.Results of training were then used for predicting the spinach yield. Measurement results were divided intotwo groups; 7 set of data was used for training purpose and 5 set data for validation process. Validation ofthe prediction results was made by considering low value of Standard Error of Prediction (SEP), Coefficientof Variation (CV), and difference between actual yield and predicting yield (d). For training purpose, 30000iterations were applied. Results of validation indicated that the iterations produced low value of the SEP, theCV, and the d for each used for predicting the yield of spinach grown in hydroponics system.Keywords: ANN, spinach, EC, hydroponics, iteration
OPTIMASI EKSTRAKSI SENYAWA FENOLIK DARI KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa) BERBANTU GELOMBANG MIKRO Maksum, Ali; Purbowati, Ike Sitoresmi Mulyo
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.2017.21.2.368

Abstract

Kelopak bunga rosella adalah sumber senyawa fenolik yang baik. Dalam penelitian ini ekstraksi dibantugelombang mikro digunakan untuk mengekstrak senyawa fenolik dari kelopak bunga Rosella. Denganmenggunakan metode respon permukaan, efek daya gelombang mikro, konsentrasi etanol, dan waktu ekstraksipada hasil total fenol yang diselidiki dan kondisi optimal ditentukan sebagai berikut: daya gelombang mikro 250W, konsentrasi etanol 78,36% dan waktu ekstraksi 4,91 menit. Nilai perkiraan untuk total hasil fenol, 24,61 mg/gdiperoleh pada kondisi tersebut. Percobaan verifikasi pada kondisi optimum, terdiri dari 4 putaran, dilakukan danhasil praktis 23,77 + 0,25 mg/g jumlah fenol lebih tinggi dari pada metode konvensional 19,84 + 0,46 mg/g.Dibandingkan dengan metode konvensional, antosianin, vitamin C dan hasil ekstraksi dibantu gelombang mikroadalah 14,80 + 0,08, 10,74 + 0,14 mg/g dan 22,09 + 3,3% yang lebih tinggi dan berbeda secara signifikan dalamtingkat kepercayaan 95% dari pada ekstraksi konvensional, yaitu 9,25 + 0,04, 9,99 + 0,16 mg/g dan 16,18 + 1,9%.Aktivitas antibakteri yang dinyatakan dengan nilai zona hambat adalah 12,6 + 0,6 mm pada E. coli dan 11,6 + 0,3mm terhadap S. aureus. Nilai IC50 ekstrak adalah 202,47 μL/mL. Dibandingkan dengan metode konvensional,zona hambatan 10,2 + 0,4 mm pada E. coli dan 9,8 + 0,6 mm pada S. aureus. Aktivitas antioksidan dinyatakandengan nilai IC50293,09 μL/mLKata kunci: kelopak bunga Rosella, ekstraksi berbantu gelombang mikro, fenolABSTRACTRoselle calyx is an excellent source of phenolic compounds. In this study, microwave-assisted extractionwas applied to extract the phenolic compounds from Roselle calyx. By using response surface methodology, theeffects of microwave output power, ethanol concentration, and extraction time on total phenolic yield wereinvestigated and the optimal conditions were determined as follows: microwave output power 250 W, ethanolconcentration 78.36% and extraction time 4.91 min. The estimated values for total phenols yield, 24.61 mg/g wasobtained at those conditions. A verification experiment at the optimum condition, consisting of 4 runs, wasperformed and the practical yield 23.77 + 0.25 mg/g total phenols higher than using conventional method 19.84+ 0.46 mg/g was obtained. Compared with conventional method, anthocyanin, vitamin C and yield of microwaveassisted extraction were 14.80 + 0.08, 10.74 + 0,14 mg/g and 22.09 + 3.3 % which were higher and significantlydifferent within 95% confidence level than conventional extraction , which were 9.28 + 0.04, 9.99 + 0.16 mg/gand 16,18 + 1,9%, respectively. Antibacterial activity expressed with inhibitory zone value was 12.6 + 0.6 mmagainst E coli and 11.6 + 0.3 mm against S aureus. IC50 value of the extract was 202.47 μL/mL.Compared withconventional method, with inhibitory zone of 10. 2 + 0.4 mm against E coli and 9.8 + 0.6 mm against S aureus.Antioxidant activity expressed with IC50 value of 293.09 μL/mL.Key words: roselle calyx, extraction, microwave, phenols
PENGARUH PUPUK NPK BERLAPIS ZEO-HUKALSI TERHADAP PERTUMBUHAN DAN HASIL BAWANG MERAH DI TANAH PASIR PANTAI BUGEL KULON PROGO Syukur, Syukur; Sulakhudin, A.; Sunarminto, B. H.
Agrin Vol 15, No 1 (2011): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2011.15.1.120

Abstract

Tanah pasir pantai memiliki kesuburan yang rendah karena sebagian besar hara hilang akibat prosespelindian. Untuk mengurangi kehilangan hara di tanah pasir pantai dapat dilakukan dengan melapisi pupuk NPKdengan humat-kalsium dan zeolit. Penelitian ini merupakan percobaan pot yang dilakukan di rumah kaca JurusanTanah, Fakultas Pertanian, Universitas Gadjah Mada dari bulan September sampai Oktober 2009. Tujuanpenelitian adalah untuk mempelajari pengaruh pemberian pupuk NPK yang dilapisi dengan zeolit dan humatkalsium(pupuk NPK Zeo Hukalsi) terhadap pertumbuhan dan hasil tanaman bawang merah di tanah pasir pantaidan menentukan dosis optimunnya. Penelitian menggunakan rancangan acak lengkap dengan 2 faktor perlakuanyang diulang 3 kali. Faktor pertama adalah jenis pupuk NPK, terdiri dari NPK Zeo Hukalsi dan NPKkonvensional (phonska). Faktor kedua adalah dosis pupuk terdiri dari 0%, 50%, 100%, dan 150% dosisrekomendasi. Hasil penelitian menunjukkan bahwa pupuk NPK Zeo Hukalsi dapat meningkatkan tinggi tanamandengan dosis yang optimum adalah 50% rekomendasi. Sedangkan pengaruh NPK Zeo Hukalsi terhadappeningkatan berat basah dan kering trubus bawang merah optimum pada dosis 100% rekomendasi.Kata kunci: pupuk NPK, humat, zeolit, bawang merah, tanah pasir pantai. ABSTRACTCoastal sandy soils, in general, have low fertility and are easier subject to leaching. To reduce nutrientloss in sandy soil NPK fertilizers can be coated with humic-calcium and zeolite. The objectives of these potexperiment conducted in glass house of Soil Science Department, Faculty of Agriculture, Gadjah MadaUniversity from September to Oktober 2009 were to study the effects of NPK coated with zeo-hucalsi dosages ongrowth and the production of shallot of coastal sandy soil and to determine its optimum dose. Experimentaldesign used was completely randomized design. The first factor was the kinds of NPK fertilizer, consisted of ZeoHucalsi coated NPK and noncoated NPK. The second factor was the fertilizer dosages consisted of 0%, 50%,100%, and 150% of recommended doses, replicated three times. The results showed that Zeo Hucalsi coatedNPK caused of increasing plant height with optimum recommended dosage was 50%. The study also found thatZeo Hucalci NPK fertilizer of 100% recomendated dosage increased the wet and dry weight of shallot.Key words: NPK fertilizer, humic, zeolit, shallot, coastal sandy soil

Page 10 of 31 | Total Record : 303

 8   9   10   11   12 

Filter by Year

2007 2024


Reset
Filter By Issues
All Issue Vol 28, No 2 (2024): Agrin Vol 28, No 1 (2024): Agrin Vol 27, No 2 (2023): Agrin Vol 27, No 1 (2023): Agrin Vol 26, No 2 (2022): Agrin Vol 26, No 1 (2022): Agrin Vol 25, No 2 (2021): Agrin Vol 25, No 1 (2021): Agrin Vol 24, No 2 (2020): Agrin Vol 24, No 1 (2020): Agrin Vol 23, No 2 (2019): Agrin Vol 23, No 1 (2019): Agrin Vol 22, No 2 (2018): Agrin Vol 22, No 1 (2018): Agrin Vol 22, No 1 (2018): Agrin Vol 21, No 2 (2017): Agrin Vol 21, No 2 (2017): Agrin Vol 21, No 1 (2017): Agrin Vol 20, No 2 (2016): Agrin Vol 20, No 1 (2016): Agrin Vol 19, No 2 (2015): Agrin Vol 19, No 1 (2015): Agrin Vol 18, No 2 (2014): Agrin Vol 18, No 1 (2014): Agrin Vol 17, No 2 (2013): Agrin Vol 17, No 1 (2013): Agrin Vol 16, No 2 (2012): Agrin Vol 16, No 1 (2012): Agrin Vol 15, No 2 (2011): Agrin Vol 15, No 1 (2011): Agrin Vol 14, No 2 (2010): Agrin Vol 14, No 1 (2010): Agrin Vol 12, No 2 (2008): Agrin Vol 12, No 1 (2008): Agrin Vol 11, No 2 (2007): Agrin Vol 11, No 1 (2007): Agrin More Issue