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One of the causes of the low productivity of rice grown on peat soils was the high levels of of toxic phenolic compounds in the soil. Development of tolerant rice varieties is one of strategies to grow rice on peat soils. The aims of this research were to select rice varieties tolerant to peat soils and to study the correlation between the plant phenolic acid content with plant tolerance to peat soil. This research was conducted at the Seed Farm Centre Lubuk Minturun, Padang from February to Jul Haryoko, Widodo; Kasli, ,; Suliansyah, Irfan; Syarif, Auzar; Prasetyo, Teguh Budi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 2 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v40i2.6358

Abstract

One of the causes of the low productivity of rice grown on peat soils was the high levels of of toxic phenolic compounds in the soil. Development of tolerant rice varieties is one of strategies to grow rice on peat soils. The aims of this research were to select rice varieties tolerant to peat soils and to study the correlation between the plant phenolic acid content with plant tolerance to peat soil. This research was conducted at the Seed Farm Centre Lubuk Minturun, Padang from February to July 2009. The research consisted of two experiments i.e. in peat soil and in mineral soil. The experiments used a completely randomized design using 21 varieties of rice as treatments which were replicated four times. The results showed that there were nine rice varieties categorized as tolerant to peat soil. These tolerant varieties showed higher stress tolerance index (STI), demonstrated by a high level of phenolic acids (coumaric, syringic, and ferulic) in the plant tissues. The STI value had positive correlation with the content of plant phenolic acids, thus the level of plant phenolic acids can be used as an indicator to determine tolerant rice varieties in peat soils. Keywords: peat soil, phenolic acids, tolerant rice, STI
Peningkatan Kapasitas Sink pada Tanaman Melon (Cucumis melo L.) dengan Pemberian Giberelin Fatonah, Siti; Kasim, Musliar; Syarif, Auzar
Jurnal Sagu Vol 8, No 02 (2009)
Publisher : Jurnal Sagu

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Abstract

For cultivation of melon (Cucumis melo L.), farmers only keep one fruit per plant to maintain quality fruit. To improve productivity, one possible effort is by spraying gibberellins at melon in combination with increasing amount of fruit maintained for each plant. The aim of this study was to know the effect of gibbereline in improving sink capacities of melon when fruit amount is increased. Gibberelins was sprayed at concentration of 0, 30, 60, and 90 mg/l to melon crop with different fruit amount per plant (one, two and three fruit). The study indicated that for melon plant with more than one fruit per plant, gibberellins application was not able to maintain the fruit quality, because the fruit weights were still decreasing. Thus, gibberellins application was not able to improve the sink capacities if fruit amount per plant is increased. While for plant with only one fruit, spraying 60 and 90 mg/l gibberellins can improve the fruit weight, so gibberellins improves the sink capacities if only one fruit is maintained for each plant.
Morphology Character and Andrographolide Quantifications on Sambiloto  ( Andrographis paniculata (Burm.F.) Nees) Prihatini, Retno; Syarif, Auzar; Bakhtiar, Amri
Bioscience Vol 4, No 1 (2020): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/0202041107669-0-00

Abstract

ABSTRACTThe Morphology character and andrographolide quantification on Sambiloto (A. Paniculata) that growth in Sawah Dangka Jorong Gaduik, Tilatang Kamang, Agam (S 00o16159.311 E100o23110.311)  have been studied.  The Morphology character  of  A. Paniculata on generative fase  have been done in the field and Laboratorium of Biology Department, Andalas University. Quantification of  andrographolide constituen were analysed by using High Performance Liquid Chromatography (HPLC) in Chemical of Nature Resources Laboratorium, Pharmacy Faculty, Andalas University. The result showed that Morphology character of  Sambiloto ( A. Paniculata ) include parameters  ie. range of height plant ( 27-45 cm) ; range of nodus numerous ( 10-14 ); range of leaf-7 size (length; width)  ( 3.8-4.1 ; 0.8-1.1) cm; range of branch numerous ( 8-10), leaf dry weight rate  (2.482 g ), stem dry weight rate  ( 5.882 g ), and day old flowering rate  ( 110 day ). The Result of quantification secondary metabolite with high economic value, namely andrographolide showed respectively with level  2.208% (vegetative) and  2.780 % (generative).  Key Words : Andrographis paniculata, morpology chracter, andrographolide quantification  ABSTRAKTelah dilakukan studi tentang Karakter morfologi dan kuantifikasi senyawa andrografolide pada tanaman Sambiloto (A. Paniculata) yang hidup di Sawah Dangka Jorong Gaduik, Tilatang Kamang, Agam (S 00o16159.311 E100o23110.311). Karakter morfologi   A. Paniculata pada fase generative telah dilakukan di lapangan dan di  Laboratorium di Jurusan Biologi Universitas Andalas. Kuantifikasi senyawa andrografolid dianalisa dengan menggunakan High Performance Liquid Chromatography (HPLC) di Laboratorium Kimia Bahan Alam, Fakultas Farmasi Universitas Andalas.  Hasil menunjukkan bahwa karakter morfologi Sambiloto    ( A. Paniculata ) meliputi parameter  yaitu kisaran tinggi tanaman ( 27-45 cm) ; kisaran jumlah nodus ( 10-14 ); kisaran ukuran daunke-7  (panjang; lebar)  ( 3,8-4,1 ; 0,8-1,1) cm; kisaran jumlah cabang ( 8-10), rata-rata berat kering daun  (2,482 g ), rata-rata berat kering batang ( 5,882 g ), and rata-rata umur berbunga  ( 110 day ).  Hasil kuantifikasi metabolit sekunder dengan nilai ekonomi tinggi, yang dikenal sebagai senyawa andrografolid menunjukkan level   2,208%  (vegetatif) dan 2,780 % (generatif). Kata kunci: Andrographis paniculata, karakter morfologi, kuantifikasi andrografolid. 
UJI KORELASI DAN REGRESI ADAPTASI GANDUM (Triticum Aestivum L.) DI DATARAN TINGGI SUKARAMI SOLOK SUMATERA Hanafiah Nasution, M Nizar; Chaniago, Irwati; Syarif, Auzar
Jurnal AGROHITA Vol 2, No 1 (2018): Jurnal Agrohita Maret 2018
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

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Abstract

Research on the adaptation grain ( Triticum aestivum L. ) at a high altitude sukarami Solok West Sumatra. This study attempts to compare growth and production of several galur grain at environment tropics. Research done by experimental methods shelves ( draft random ) group with 9 treatment galur and 3 group. Nine furrow that sukarami all galur give impact on every variable responnya except on the long panicles and the number of per panicles ears. Sukarami most adaptive strain H-20. Key words: growth, production, galur, tropics
PENGARUH BEBERAPA JENIS BAHAN ORGANIK TERHADAP HASIL TANAMAN PADI (Oryza sativa L) METODE SRI (the System of Rice Intensification) Nasution, Nizar Hanafiah; Syarif, Auzar; Anwar, Aswaldi; Silitonga, Yusnita Wahyuni
Jurnal AGROHITA Vol 1, No 2 (2017): Agrohita Vol 1 Nomor 2 Tahun 2017
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

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Abstract

Penelitian tentang pengaruh beberapa jenis bahan organik terhadap pertumbuhan vegetatif tanaman padi (Oryza sativa L) metode SRI (the System of Rice Intensification) telah dilaksanakan di Sungai Bangek, Kelurahan Balai Gadang, Padang. Tujuan penelitian ini adalah untuk mengetahui jenis bahan organik yang berpengaruh lebih baik terhadap pertumbuhan vegetatif tanaman padi metode SRI. Penelitian ini disusun berdasarkan Rancangan Acak Lengkap yang terdiri dari 4 perlakuan dan 3 ulangan. Perlakuan tersebut terdiri dari : sampah kota, kotoran ayam, thitonia dan jerami padi. Dosis masing-masingnya adalah 5 ton/ha. Data penelitian, dianalisis secara statistik dengan uji F dan F hitung yang lebih besar dari nilai F tabel 5 % maka dilanjutkan dengan Duncan`s Multiple Range Test (DNMRT) pada taraf nyata 5 %. Berdasarkan hasil penelitian disimpulkan jenis bahan organik sampah kota, kotoran ayam, thitonia dan jerami padi memberikan pengaruh yang sama terhadap hasil tanaman padi dengan metode SRI.
TANTANGAN PENGEMBANGAN PADI DIKABUPATEN KEPULAUAN MENTAWAI Azhari, Rafnel; Rusman, Bujang; Kasim, Musliar; Syarif, Auzar; Reflinaldon, Reflinaldon; Yasin, Syafrimen; Zainal, Afrizal; Junaidi, Junaidi
Jurnal AGRISEP JURNAL AGRISEP VOL 16 NO 1 2017
Publisher : Prodi Agribisnis Jurusan Sosial Ekonomi Pertanian Fakultas Pertanian Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jagrisep.16.1.41-56

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This study aims to identify the problems and develop rice agribusiness in Mentawai Islands from upstream to downstream and formulate appropriate policy recommendations to be implemented. The research location determined by purposive namely in the village Makalo and Malakopa District of South Pagai, Sikakap subdistrict Taikako Village, Village Saumanganya District of North Pagai, Bosua Village and Village Beriulou District of South Sipora, Village Rogdog and Madobag District of South Siberut. Respondents in this study were 30 farmers. Respondents farmers selected by simple random sampling method. The results showed that the majority of rice paddies new openings in six districts consist of peatlands with a depth varying from 0.4- > 2.0 meter, fields new openings that have been implemented in the Mentawai Islands in general can not be expected to result in maximum productivity due to problems of land suitability diverse. Farmers also do not take action appropriate technical culture starting from land preparation, seed selection, weeding, fertilizing and water management. Behaviorally agriculture, farmers in Mentawai Islands is not a society that blends with the culture of rice fields, it is because basically their agricultural base is dry land agriculture with farming patterns. This will certainly give a great challenge and not easy for the cultivation of rice in the Mentawai Islands.Keywords:challenge,rice agribusiness, cultivation of rice
DYNAMICS OF SOIL ORGANIC CARBON FRACTIONS UNDER DIFFERENT LAND MANAGEMENT IN WET TROPICAL AREAS Ermadani, Ermadani; Hermansah, Hermansah; Yulnafatmawita, Yulnafatmawita; Syarif, Auzar
Jurnal Solum Vol 15, No 1 (2018): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.15.1.26-39.2018

Abstract

Karbon (C) organik tanah yang merupakan bagian utama dari bahan organik tanah mengalami penurunan sebagai akibat perubahan-perubahan penggunaan lahan dari kondisi alami menjadi lahan-lahan pertanian. Penurunan C organik tanah menjadi semakin besar karena masukan bahan organik yang rendah dan bila penurunan ini. berlangsung terus menerus  maka pada akhirnya menyebabkan degradasi tanah. Artikel ini membahas peranan, dekomposisi dan struktur dari bahan organik tanah dalam hubungannya dengan dinamika fraksi C organik tanah pada pengelolaan lahan yang berbeda di daerah tropis basah. Perubahan penggunaan dan pengelolaan lahan menyebabkan terjadinya perubahan C organik total dan fraksi-fraksi C organik labil dan stabil tanah. Beberapa penelitian telah menunjukkan bahwa fraksi C organik labil seperti C organik partikulat lebih responsif terhadap perubahan-perubahan dari pengelolaan tanah dan merupakan suatu indikator yang sensitif dari kualitas tanah. Disamping itu fraksi C organik stabil seperti asam humat yang mengalami perubahan karena praktek-praktek  pengelolaan tanah dapat digunakan untuk menilai kapasitas potensial tanah sebagai penyimpan karbon. Perubahan-perubahan penggunaan lahan dan pengelolaan tanah mempunyai pengaruh negatif dan positif terhadap C organik total, fraksi C organik labil (C organik partikulat) dan fraksi C organik stabil (asam humat). Praktek-praktek pengelolaan yang dapat mempertahankan dan memperbaiki fraksi-fraksi C organik tanah  meliputi sistem agroforestri,  aplikasi pupuk organik, mulsa dan pengembalian sisa tanaman ke dalam tanah. Fraksi C organik partikulat dan asam humat menunjukkan perubahan-perubahan yang lebih besar dibandingkan C organik total akibat perubahan-perubahan penggunaan lahan dan praktek-praktek pengelolaan tanah di daerah tropis basah.Key words : Fraksi C organik, penggunaan lahan, tropis basah
Isolation and Characterization of Endofytic Bacteria Indigenus Potentially Producing IAA (Indole Acetic Acid) in West Sumatera and Their Effect on Nursery Palm Oil (Elaeis guineensis jacq) Rover, Rover; Mayerni, Reni; Yanti, Yulmira; Syarif, Auzar
Jurnal Ilmu dan Teknologi Terapan Pertanian Vol 3 No 2 (2019): Journal of Applied Agricultural Science and Technology
Publisher : Payakumbuh State Polytechnic of Agriculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32530/jaast.v3i2.116

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The IAA potentials of endophytic bacteria indigenous isolated from roots palm oil in west Sumatra. Isolate were characterized on the basis of visual observation, gram staining, hypersensitive reaction and IAA producing bacteria.  Subsequently, effect on plant growth was tested by nursery palm oil used random design block. Out of 82 isolates, base on gram test 12 isolates were gram negative and 70 isolates grams positive and then results on the reaction hypersensitive test (HR test) there are 8 isolates that positive which means the isolate cannot be applied on the soil and plant. Eighty isolates selected were able to produce IAA that was between ppm 0,30ppm - 3,65ppm. Seven isolates showed clearly the growth promoting plant under field condition. Hence, these isolates are promising plant growth promoting isolates showing multiple attributes that can significantly influence the nursery palm oil. The result of present study, treatment E3.1.2 has higher plant most of the other treatment i.e. 21,93 cm and number of leaves i.e. 4,33 leaves.
TUMPANGSARI BERBASIS LEGUM : A REVIEW Subagiono, Subagiono; Syarif, Auzar; Syarif, Zulfadly; Satria, Benni
Jurnal Sains Agro Vol 4, No 2 (2019): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (568.947 KB) | DOI: 10.36355/jsa.v4i2.282

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Tanaman legum merupakan tanaman yang dapat memfiksasi N dari udara bebas. Sebagian dari tanaman legum merupakan tanaman pangan yang merupakan sumber protein bagi masyarakat. Tumpangsari legum dengan non legum dapat mengurangi pemakaian pupuk kimia, menjaga kelembaban tanah serta mengurangi gulma. Artikel ini meliputi pengkajian  tumpangsari secara umum, kajian tumpangsari diberbagai negara, keuntungan tumpangsari tanaman legum dan non legum serta potensi nisbah kesetraan lahan (NKL) tumpangsari legum dan non legum. Tumpangsari tanaman legum dan non legum dapat mempengaruhi pertumbuhan, hasil  dan meningkatkan serapan N pada tanaman non legum serta meningkatkan Nisbah Kesetraan Lahan (NKL) dibanding monokultur. Key word : tumpangsari, legum dan non legum , pertumbuhan, hasil, nisbah kesetraan lahan
TANGGAPAN PERTUMBUHAN KACANG TANAH ( ARACHIS HYPOGEAE L) TERHADAP PUPUK KANDANG SAPI DAN DOLOMIT PADA TANAH MASAM Setiono, Setiono; Syarif, Auzar; Syarif, Zulfadly
Jurnal Sains Agro Vol 3, No 1 (2018): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (112.792 KB) | DOI: 10.36355/jsa.v3i1.199

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Untuk meningkatkan pertumbuhan kacang tanahsalah satu usaha yang dapat dilakukan adalah dengan cara memperbaiki sistim budidaya tanaman dengan meningkatkan kesuburan tanah terutama pada tanah jenis ultisol.Penelitian dilaksanakan di Kebun Percobaan Balai Benih Dinas Pertanian tanaman Pangan dan Hortikultura Kabupaten Bungo Provinsi Jambi mulai Juli sampai dengan Desember 2012 dengan maksud mengkaji pengaruh pupuk kandang sapi  dan dolomit terhadap pertumbuhan, komponen hasil dan hasil tanaman kacang. Rancangan Percobaan  menggunakan Rancangan Acak Kelompok dalam bentuk faktorial 4 x 3 dengan tiga ulangan perlakuan. Faktor I adalah dosis pupuk kandang sapi terdiri  dari 4 taraf ; dosis 0 t  ha-1 ,  7,5 t  ha-1, 15 t ha-1, 22,5 t ha-1 sedangkan faktor II dosis dolomit terdiri 3 taraf ; 0 t  ha-1 , 4 t ha-1 ( 1 x Al-dd )  , 8 t ha-1 ( 2 x Al-dd ).Hasil penelitian menunjukkanvariasi pertumbuhan dan hasil kacang tanah terhadap variasi pemberian pupuk kandang sapi dan dolomit,  menghasilkan  variasi  yang berbeda dibanding kontrol tanpa pupuk kandang sapi dan dolomit. Kata Kunci : Kacang tanah, pupuk kandang sapi, dolomit.