Hery Widijanto
Soil Science Department, Faculty of Agriculture, University of Sebelas Maret, Surakarta

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EVALUASI PENERAPAN PERTANIAN PADI SAWAH SEMI ORGANIK SETELAH MUSIM TANAM V Syamsiyah, Jauhari; Widijanto, Hery; Mujiyo, Mujiyo
Caraka Tani: Journal of Sustainable Agriculture Vol 24, No 1 (2009): March
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2185.54 KB) | DOI: 10.20961/carakatani.v24i1.14004

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The study about “Evaluation of semi organic system on rice production at fifth plant season” whose purpose to evaluate the quality and rice yield at semi organic system at fifth plant season, its impact on soil chemistry properties and its properness to farmers. This field experiment has been conducted from May to September 2008 at Palur, Sukoharjo, with two factors. The first factor is anorganic fertilizer at recommendation dose (Urea 300 kg ha-1, ZA 100 kg ha-1, SP-36 150 kg ha-1, KCl 100 kg ha-1). The second factor is 30% of dose recommendation anorganic fertilizer (Urea 100 kg ha-1, ZA 30 kg ha-1, SP-36 50 kg ha-1, KCl 30 kg ha-1) and five tons organic fertilizer. The data was analyzed with T test to evaluate the differences of semi organic system and anorganic system. The experiment’s result shows that the semi organik system gives weight of dry straw which is higher than anorganic system. The yield of dry unhulled rice in semi organic system(9,2 ton/ha) isn’t significantly different from the weight which is compared with anorganic system (8,576 ton/ha). From the economic analysis, semi organic system gives higher profit than anorganic system. The rice quality (dust and fiber contain) in semi organic system is higher but protein contain isn’t different. Semi organik system gives organik matter contain (1,618%), KPK (14,454 cmol/kg), N total (0,368%), available P (0,368 ppm) and available K (164,96 me%) which is signiificantly higher but givew lower pH (5,5) than anorganic system.
KAJIAN MACAM PUPUK ORGANIK DAN DOSIS PUPUK P TERHADAP HASIL KACANG TANAH (Arachis hypogaea L.) Dl TANAH ENTISOL Sumarno, Sumarno; Hartati, Sri; Widijanto, Hery
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 1 (2001)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v1i1.86

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The aim of the study was to know the affect of organic fertilizer kind and dosage of P fertilizer to yield of peanut(Arachis hypogxa L) on entisol. The research was carried out at Colomadu, Karanganyar from September 1999 to January 2000. The field research design was factorial arranged in Completely Randomized Block Design, consist of two factors : organic Fertilizer and Dosage ofP fertiilizer. The first factor was kind of organic fertilizer: bokhasi (O1), animal manure (O,) and fine compost (O3). The second factor was dosage of P fertilizer consist of four doses: without P fertilizer (P0), 50 kg SP-36 /ha (P1), 100 kg SP-36 /ha (P2) and 150 kg SP-36 /ha (P3). The study indicated that the kind of organic fertilizer non significant to soil pH, available Pemegang, height of plant, total of fill pod, total of empty pod, weight of fresh pod of plant and weight of 100 seeds and significant to fresh weight of plant, weight of fresh pod of plot, weight of dry pods of plot and weight of seed of plant. Bokhasi indicated better affect than animal manure and fine compost. P fertilizer incraesed weight fresh pod of plot and weight of dry of plot.
EFISIENSI SERAPAN S DAN HASIL PADI DENGAN PEMBERIAN PUPUK KANDANG PUYUH DAN PUPUK ANORGANIK DI LAHAN SAWAH (MUSIM TANAM II) Widijanto, Hery; Anditasari, Noviana; Suntoro, Suntoro
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 8, No 1 (2011)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v8i1.36

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The aim of this research was to know the effect of inorganic fertilizer quail manure to efficiency of Sulphur up take and to know treatment combination that give highest rice yield. This research had been done at Palur, Mojolaban, Sukoharjo, started from January until August 2008. This research used factorial experiment that arranged in Randomized Complete Block Design (RCBD) with two factors. The first factor was 3 levels of inorganic fertilizer dosage i.e.: without inorganic fertilizer, 50% recommendation dosage and 100% recommendation dosage (urea, ZA, SP‐36 and KCl were 300, 100, 150 and 100 kg. ha‐1). And second factor was 3 levels of quail manure dosage i.e.:0, 3 and 6 ton.ha‐1. Statistical analysis used F test, Duncan’s Multiple Range (DMR) test at 5% in level and Correlation test. The Result of this research showed that, interaction between inorganic and quail manure increased significantly efficiency of S uptake. Dosage quail manure increased significantly total weight of dry hust. The highest efficiency of S uptake was on 100% recommendation dosage inorganic fertilizer and quail manure dosage 3 ton.ha‐1 (44.12%). The highest total weight of dry hust on 50% recommendation dosage inorganic fertilizer and quail manure dosage 6 ton.ha‐1 Key words: quail manure, efficiency of S uptake and paddy soil
Pengeloloan Kesuburan Pada Tanah yang Dipersawahkan dengan Sistem Pertanian Organik Minardi, Slamet; Widijanto, Hery
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 4, No 1 (2004)
Publisher : Faculty of Agriculture, Sebelas Maret University

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EFISIENSI SERAPAN P TANAMAN KENTANG PADA TANAH ANDISOL DENGAN PENAMBAHAN VERMIKOMPOS Widijanto, Hery; Syamsiyah, Jauhari; Ferela, Betta Dwi Isti
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 5, No 2 (2008)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v5i2.67

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Mostly potatoes (Solanum tuberosum L.) are planted on Andisols that have problem in phosphate fixation. The aim of this research were to know the efficiency of P fertilizing in Andisols that were added vermicompost and SP36 and to know potatoes yield in Andisol. This research was conducted at Tawangmangu, Karanganyar on October until December 2007. The method used was split plot design, as a main plot was vermicompost, i.e. no vermicompost and 10 ton.ha-1 vermicompost. Sub plot consist of four levels of P fertilizer (SP36), i.e. 100, 250, 400, 550 kg.ha-1 and control. The observation variables are available P, efficiency of P absorption, weight and diameter percentage of potato tuber. F test, Kruskal-Wallis test, and DMRT 5% test is used to analysis data. The result of this research shows that there is interaction betwen vermicompost and 400 kg.ha-1 doses SP36 to highest available P in the soil is 2.157 ppm P2O5, but there is no interaction on yield. The addition of 10 ton.ha-1 vermicompost can increase weight of potato tuber (30.83 %) and decreased percentage of potato tuber amount diameter in < 9 cm (48.05 %). Addition of 250 kg.ha-1 SP36 can increase percentage of potato tuber amount diameter in 12-15 cm (57.46%). The highest result of potato is reached on tuber diameter > 15 cm (37.16%) with 10 tons.ha-1 vermicompost additions. Keywords: vermicompost, P fertilizer, potato, Andisols
STUDI KUALITAS AIR DAN SUMBANGAN HARA DARI IRIGASI SIDEREJO-JAWA TENGAH PADA BUDIDAYA PADI SAWAH Suyana, Jaka; Widijanto, Hery
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 2 (2002)
Publisher : Fakultas Pertanian Universitas Sebelas Maret

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INOKULASI JAMUR PENGOKSIDASI BELERANG PADA PUPUK FOSFAT ALAM UNTUK MENINGKATKAN FOSFAT DAN SULFAT TERSEDIA BAGI TANAMAN Sumarno, Sumarno; Widijanto, Hery; Sudadi, Sudadi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 5, No 2 (2008)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v5i2.72

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Phosphate rocks as an alternative sources of P fertilizer are cheaper than SP-36. The main problem was their low of total and available P that must be increased to make them more effective source of P for plants. Inoculate them with S oxidizing fungi will increase their available-P. The research aim was to study the potency of two S oxidizing fungi Aspergillus japonicus and Penicillium nalgiovensis to increase available-P of phosphate rocks. Experimental research done at the Lab. of Soil Biology and Lab. of Soil Chemistry and Fertility, Department of Soil Science, Faculty of Agriculture, UNS, Surakarta, at March – Mei 2008. The experiment arranged in completely randomized design with four factors i.e. the origin of elemental sulphur (from G. Welirang, East Java and from USA), the origin of phosphate rocks (Christmas Island, Ciamis and Madura), kind of inoculums fungi (A. japonicus and P. nalgiovensis) and inoculums densities (0; 106 and 107 spore/g of phosphate rock). Each treatment combinations were replicated three times. Fifty grams mixture of phosphate rocks, cassava solid waste, tapioca and rice bran was poured in 250 ml Erlenmeyer, sterilized with autoclave at 121 oC for 30 minutes, three times alternately in 5 days, then inoculated with fungus spores and incubated at field capacity in room temperature for 3 months. Samples were taken at 1, 2 and 3 months after incubation time for analysis of water soluble-P, soluble sulphate, pH and total fungus. Data analyzed statistically with F test and Duncan Multiple Range Test at 5% of level significance. The result show that the two of S oxidizing fungi Aspergillus japonicus and Penicillium nalgiovensis were be able to increases available-P of phosphate rocks, as well as soluble sulphate more than 200 % of control treatment. Penicillium nalgiovensis was more effective than Aspergillus japonicus. As P sources, phosphate rock from Christmas Island was better than from Ciamis and Madura, while elemental S imported from USA was better than local So from G. Welirang. The increase of inoculums densities and length of incubation times increase soluble P and sulphate. Keyword: phosphate rocks, S oxidizing fungi, soluble P and sulphate
KAJIAN IMBANGAN DOSIS (Chromolaena odorata) DAN UREA TERNADAP N DAN HASIL TANAMAN PADI SAWAH Widijanto, Hery; Yuliawati, Dewi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 3, No 2 (2003)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v3i2.108

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ISOLASI MIKROBA ASLI TANAH ANDISOL DIENG DAN KAJIAN POTENSINYA SEBAGAI INOKULAN PUPUK HAYATI PELARUT FOSFAT Sudadi, Sudadi; Widijanto, Hery; Putri, Linda Habsari Efendi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 10, No 2 (2013)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v10i2.143

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Fosfor (P) merupakan unsur hara makro yang ketersediaannya bagi tanaman seringkali rendah. Penelitian bertujuan untuk menemukan mikrobia asli tanah Andisol Dieng yang berpotensi sebagai inokulan pupuk hayati pelarut fosfat. Percobaan dilakukan di Laboratorium Biologi Tanah, Fakultas Pertanian UNS, Surakarta. Penelitian diawali dengan eksplorasi untuk memperoleh isolat-isolat mikrobia tanah Andisol Dieng, dilanjutkan dengan dua percobaan di laboratorium. Percobaan pertama menggunakan medium cair Pikovskaya dan percobaan kedua menggunakan medium vermikompos. Kedua percobaan disusun dalam rancangan acak lengkap dengan dua faktor yaitu macam isolat mikrobia (empat isolat) dan lama inkubasi (0, 1, 3 dan 6 hari untuk percobaan pertama dan 0, 2 dan 4 minggu untuk percobaan kedua). Masing-masing kombinasi perlakuan diulang tiga kali. Sebanyak 106 sel bakteri atau spora jamur diinokulasikan ke dalam tiap mililiter medium cair Pikovskaya atau tiap gram medium vermikompos.Variabel yang diamati adalah jumlah P-terlarut, kerapatan sel bakteri atau biomassa jamur dan pH medium. Hasil penelitian mendapatkan empat isolat mikrobia yang berpotensi sebagai pelarut fosfat yaitu satu isolat bakteri dan tiga isolat jamur yaitu Aspergillus niger, Fusarium sp dan Aspergillus tamarii. Jamur A. Niger memiliki potensi sebagai inokulan pupuk hayati pelarut fosfat paling tinggi bila dilihat dari kemampuannya berkembangbiak dan melarutkan fosfat dalam medium cair Pikovskaya dan medium vermikompos.
PENGARUH DOSIS INOKULUM AZOLLA DAN PUPUK KALIUM ORGANIK TERHADAP KETERSEDIAAN K DAN HASIL PADI PADA ALFISOL JUMANTONO Syarif, Ransa Gustrada; Widijanto, Hery; Sumarno, Sumarno
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 10, No 2 (2013)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v10i2.196

Abstract

Padi (oryza sativa) merupakan bahan makanan pokok bagi rakyat Indonesia. Padi memiliki masalah dalam budidayanya salah satunya kurangnya unsur hara makro dan mikro dalam tanah. Tanaman padi memerlukan unsur hara terutama unsur hara Kalium (K). Efisiensi pemupukan sangat dipengaruhi oleh efisiensi serapan hara tanaman. Pemberian pupuk kalium organik dan inokulum azolla merupakan salah satu cara untuk memperbaiki unsur hara makro didalam tanah Alfisol yang umumnya memiliki unsur hara makro dan mikro yang rendah. Kalium menjadi salah satu faktor pembatas utama dalam usaha budidaya padi sawah karena tingkat efisiensi penyerapannya masih tergolong rendah. Pemanfaatan azolla disini sebagai pupuk organik memang memungkinkan bila dikembangkan. Pasalnya, bila dihitung dari berat keringnya dalam bentuk kompos, mengandung unsur Nitrogen (N) 3-5%, Phosphor (P) 0,5- 0,9% dan Kalium (K) 2-4,5%. Berdasarkan komposisi kimia tersebut, bila digunakan untuk pupuk mempertahankan kesuburan tanah, setiap hektar areal memerlukan azolla sejumlah 20 ton dalam bentuk segar, atau 6-7 ton berupa kompos (kadar air 15%) atau sekitar 1 ton dalam keadaan kering sehingga dapat mengurangi pemakaian pupuk kimia. Penelitian ini bertujuan untuk mengaplikasikan inokulum azolla dan kalium organik pada tanaman padi yang ditanam di tanah Alfisol. Dengan adanya penelitian ini diharapkan akan didapat suatu manfaat dan ilmu dalam pengembangan budidaya tanaman padi di tanah alfisol agar dapat menghasilkan produksi yang maksimum.