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Peningkatan Kapasitas Sink pada Tanaman Melon (Cucumis melo L.) dengan Pemberian Giberelin Siti Fatonah; Musliar Kasim; Auzar Syarif
Jurnal Sagu Vol 8, No 02 (2009)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2176.059 KB) | DOI: 10.31258/sagu.v8i02.1391

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.
PENGARUH BEBERAPA JENIS BAHAN ORGANIK TERHADAP HASIL TANAMAN PADI (Oryza sativa L) METODE SRI (the System of Rice Intensification) Nizar Hanafiah Nasution; Auzar Syarif; Aswaldi Anwar; Yusnita Wahyuni Silitonga
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 1, No 2 (2017): Jurnal Agrohita
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v1i2.415

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.
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 Widodo Haryoko; , Kasli; Irfan Suliansyah; Auzar Syarif; Teguh Budi Prasetyo
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
Morphology Character and Andrographolide Quantifications on Sambiloto  ( Andrographis paniculata (Burm.F.) Nees) Retno Prihatini; Auzar Syarif; Amri Bakhtiar
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. 
Perbaikan Genetik Kultivar Padi Beras Hitam Lokal Sumatera Barat Melalui Mutasi Induksi Benny Warman; Sobrizal Sobrizal; Irfan Suliansyah; Etti Swasti; Auzar Syarif
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 11, No 2 (2015): Desember 2015
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jair.2015.11.2.2791

Abstract

Kultivar padi beras hitam merupakan padi lokal yang berasal dari Pasaman Timur yang memiliki umur panjang dan tinggi tanamannya terlalu tinggi.  Penelitian ini dilaksanakan sejak Maret 2012 sampai Maret 2013 bertujuan untuk memperbaiki genetik padi beras hitam lokal Sumatera Barat khususnya terkait umur tanaman agar lebih genjah melalui pemuliaan mutasi.  Untuk mendapatkan dosis optimum, benih padi beras hitam diiradiasi dengan sinar gamma 60Co dosis 0, 100, 200, 300, 400 dan 500 Gy di Pusat Aplikasi Isotop dan Radiasi-Badan Tenaga Nuklir Nasional (PAIR – BATAN), Jakarta. Dari hasil pengamatan persentase kecambah, tinggi tanaman dan panjang akar pada fase pembibitan, dan persentase kehampaan gabah M1 diperoleh dosis iradiasi 200 - 300 Gy merupakan dosis yang efektif dalam menghasilkan keragaman genetik.  Hal ini juga terlihat pada populasi M2 hasil iradiasi 200 Gy menghasilkan keragaman genetik yang luas pada variabel karakter tinggi tanaman, jumlah anakan produktif dan umur tanaman. Dari hasil seleksi yang dilakukan pada populasi M2 diperoleh kandidat mutan genjah sebanyak 81 kandidat dengan frekuensi mutasi sebesar 0.08 %.  Tanaman genjah terseleksi tentu akan sangat berguna sebagai bahan tanaman awal dalam perbaikan varietas padi beras hitam di masa yang akan datang. Kata kunci : Padi beras hitam, mutasi induksi, genjah.
EFEKTIVITAS BERBAGAI FUNGI MIKORIZA ARBUSKULAR INDIGENUS TERHADAP SERAPAN HARA P DAN PERTUMBUHAN TANAMAN JARAK PAGAR (Jatropha curcas L.) Muzakkir Muzakkir; Eti Farda Husin; Agustian Agustian; Auzar Syarif
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (190.345 KB) | DOI: 10.25077/js.7.2.137-143.2010

Abstract

Utilization of arbuscular mycorrhizae fungi (FMA) is an alternative way to improve soil fertility. Therefore, it must be developed by studying deeply the effectivity of the FMA. This is important due to either its ability to associate with almost all of vegetation family in terrestrial ecosystems or its ability to increase plant growth rate, seedlings quality, and crop yield, especially on critical land. A research about effectivity of variously indigenous arbuscular mycorrhizae fungi on P-sorption and Jatropha growth was conducted at laboratorium and glasshouse Agriculture Faculty, Andalas University. This research was aimed to gain the most effective isolate of arbuscular mycorrhizae fungi on growth of and P-sorption by Jatropha (Jatropha curcas L.) plant on critical land. Single isolat such as Glomus sp2, Acaulospora sp1, Gigaspora sp1, and compound isolate M7 (Glomus sp2,+ Acaulospora sp1 + Gigaspora sp1) significantly affected plant height, canopy dry matter, infection percentage and intensity, and P-sorption. M7 Compound isolate was the most effective innoculum. By this isolate, height of Jatropha seedlings was 27.5 cm, canopy dry matter 5.9 g, infection percentage 78.5%, infection intensity was 49.1, and P-sorption by canopy was 1.6 g for each seedling. Keywords: Effectiveness of FMA
DYNAMICS OF SOIL ORGANIC CARBON FRACTIONS UNDER DIFFERENT LAND MANAGEMENT IN WET TROPICAL AREAS Ermadani Ermadani; Hermansah Hermansah; Yulnafatmawita Yulnafatmawita; Auzar Syarif
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 | Full PDF (538.964 KB) | 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
SULFATE AMMONIUM FERTILIZER ON THE OFF-SEASON PRODUCTION OF SNAKE FRUIT (Salacca sumatrana Becc.) Rasmita - Adelina; irfan Suliansyah; Auzar Syarif; Warnita - -
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 28 No. 2 (2021): BIOTROPIA Vol.28 No.2, Agustus 2021
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.985 KB) | DOI: 10.11598/btb.0.0.0.1280

Abstract

Sidimpuan snake fruit is one of the local specialties of Padangsidimpuan City in Sumatra. The fruit is known for its sweet, sour and astringent taste which differentiates it from Pondoh and Balinese snake fruit. However, snake fruit farmers have been experiencing an increasing failure rate of fruit-set during the off-season which has led to a decrease in production.   Use fertilization and drip irrigation in the off-season has been suggested as a solution. This research investigates the use of these to overcome the failure of fruit set to optimize production of Sidimpuan snake fruit throughout the year by determining the optimal dosage of ammonium sulfate fertilizer and drip irrigation for fruit set and production in the off-season. This research used a split-plot design with the main plot for drip irrigation and the subplot for ammonium sulfate. Observation parameters include the number of flower and fruit bunches, fruit set percentage and a nutrient analysis of the leaves. The results revealed that drip irrigation had a significant effect on the observed variables of fruit set and number of harvested fruit bunches.  Drip irrigation had a significant effect on the fruit set percentage and the number of harvested fruit bunches. The best combination of treatments was also discovered to be 400 g ammonium sulfate fertilizer per plant and drip irrigation 3000 ml/plant. The fertilization period of July-Sept gave an off season harvest that was able to match the fruit set percentage (10.76% difference) and number of fruit bunches that were formed (25.65% difference ) by the April-June fertilization for the on-season harvest demonstrating that drip irrigation and ammonium sulfate can overcome fruit set failure in Sidimpuan snake fruit during the off-season.
TANTANGAN PENGEMBANGAN PADI DIKABUPATEN KEPULAUAN MENTAWAI Rafnel Azhari; Bujang Rusman; Musliar Kasim; Auzar Syarif; Reflinaldon Reflinaldon; Syafrimen Yasin; Afrizal Zainal; Junaidi Junaidi
Jurnal AGRISEP JURNAL AGRISEP VOL 16 NO 01 2017
Publisher : Badan Penerbitan Fakultas Pertanian, Universitas Bengkulu

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

Abstract

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.
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; Reni Mayerni; Yulmira Yanti; Auzar Syarif
Jurnal Ilmu dan Teknologi Terapan Pertanian Vol 3 No 2 (2019): Journal of Applied Agricultural Science and Technology
Publisher : Politeknik Pertanian Negeri Payakumbuh

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

Abstract

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.