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PENURUNAN LOGAM BERAT TIMBAL (PB) PADA KOLAM BIOFILTRASI AIR IRIGASI DENGAN MENGGUNAKAN TANAMAN AIR (AQUATIC PLANT) Murdhiani, Murdhiani; Sabrina, T.; Sumono, Sumono
Jurnal Ilmu Pertanian KULTIVAR Vol 5, No 2 (2011)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Abstract

Abstrak Penggunaan tanaman air dapat digunakan untuk mengurangi konsentrasi logam berat timbal di air irigasi. Tujuan penelitian ini adalah untuk mengetahui pengaruh tanaman eceng gondok, semanggi air dan Azolla serta pengaruh laju debit air irigasi dari kolam biofiltrasi dalam menurunkan konsentrasi logam berat timbal (Pb) dalam air irigasi. Metoda penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL)  dengan 2 (dua) faktor dengan 3 (tiga) ulangan. Faktor pertama adalah debit air kolam biofiltrasi yaitu 0.6 l/det/ha (0.3 ml/det/m2), 1.1 l/det/ha (0.55 ml/det/m2), 1.6 l/det/ha (0.8 ml/det/m2). Faktor kedua adalah jenis tanaman  yaitu tanpa tanaman (kontrol), tanaman eceng gondok, tanaman semanggi air, dan tanaman Azolla. Hasil penelitian menunjukkan bahwa penggunaan tanaman air eceng gondok, semanggi air dan Azolla memberi pengaruh terhadap penurunan konsentrasi logam berat timbal (Pb) di air dan tanah. Tanaman Azolla, tanaman air yang paling berpotensi digunakan dalam menurunkan konsentrasi logam berat timbal (Pb) di air irigasi. Debit yang lebih efektif menurunkan logam berat timbal (Pb) pada debit 0.3 ml/det/m2, namun pada debit 0.8 ml/det/m2 adalah perlakuan debit yang besar dan tanaman Azolla juga mampu menurunkan konsentrasi logam berat timbal (Pb) di air irigasi. Kata kunci: timbal, air irigasi, tanaman air
PERBAIKAN SIFAT TANAH KEBUN KAKAO PADA BERBAGAI KEMIRINGAN LAHAN DENGAN MENGGUNAKAN TEKNIK BIOPORI DAN MULSA VERTIKAL Maharany, Rina; Rauf, Abdul; Sabrina, T.
Jurnal Ilmu Pertanian KULTIVAR Vol 5, No 2 (2011)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Pengelolaan limbah tanaman kakao masih belum ditangani dengan tepat, salah satu upaya pengelolaan yang tepat dalam pengelolaan serasah kakao adalah dengan membenamkannya ke dalam tanah agar terjadi percepatan pelapukan (secara biopori dan mulsa vertikal) dan memberikan kontribusi terhadap perbaikan dan kesuburan sifat tanah. Tujuan penelitian ini adalah untuk mengevaluasi teknik yang paling tepat dilakukan dalam penempatan serasah kakao terhadap perbaikan sifat tanah di kebun kakao, dan untuk mengevaluasi pengaruh kemiringan lahan terhadap sifat tanah di perkebunan kakao, untuk mengevaluasi interaksi antara penempatan serasah kakao dan kemiringan lahan terhadap sifat tanah di perkebunan kakao. Metoda penelitian yang digunakan adalah Rancangan Petak Berjalur (Strip Plot Design) dengan 3 (kali) ulangan. Faktor pertama adalah kemiringan lahan yaitu lahan datar, lahan landai dan lahan miring. Faktor kedua adalah penempatan serasah kakao yaitu tanpa pemberian mulsa (kontrol), penempatan serasah secara biopori, dan penempatan serasah secara mulsa vertikal. Hasil penelitian menunjukkan bahwa perlakuan penempatan serasah kakao berpengaruh nyata terhadap perbaikan sifat tanah dikebun kakao terutama penempatan serasah kakao secara mulsa vertikal. Perlakuan kemiringan lahan berpengaruh nyata terhadap sifat tanah kebun kakao, yang lebih baik adalah pada kemiringan lahan datar. Interaksi antara perlakuan penempatan serasah kakao dan kemiringan lahan berpengaruh nyata terhadap perbaikan sifat fisik, sifat kimia, dan sifat biologi tanah di kebun kakao. Kata kunci: biopori, mulsa vertikal, sifat fisik, kimia, biologi tanah
PENGARUH PEMBERIAN MVA (MIKORIZA VESICULAR ARBUSKULAR) TERHADAP PERTUMBUHAN STUMP KARET KLON PB 260 (Hevea Brasiliensis Muell Arg.) DAN SERAPAN HARA PADA BERBAGAI KADAR AIR TANAH DI RUMAH KASA Sahar, Asmarlaili; Sabrina, T.; Hanafiah, Diana Sofia
Pertanian Tropik Vol 2, No 2 (2015)
Publisher : Pasca Sarjana FP USU

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Abstract

Mikoriza arbuskular merupakan jamur akar yang dapat meningkatkan ketahanan bibit yang diinfeksinya lebih baik dibandingkan dengan yang tidak terinfeksi jika ditanam ke lapang. Penelitian ini bertujuan untuk mempelajari pengaruh pemberian MVA (Mikoriza VesicularArbuskular) terhadap pertumbuhan stump karet Klon PB 260 (Hevea brasiliensis MUELL Arg.) dan serapan hara pada berbagai kadar air tanah di rumah kasa. Penelitian dilakukan pada akhir Maret 2014 dan selesai pada pertengahan Agustus 2014. Isolat MVA yang digunakan adalah Acaulospora sp 1, Acaulospora sp 2 dari hasil penelitian HB 2013 dan Glomus sp yang berasal dari koleksi Laboratorium Biologi Tanah FPUSU. Penelitian ini dilakukan di rumah kasa FP USU, dengan menggunakan rancangan petak terpisah. Sebagai petak utama adalah kadar air (100, 80 dan 60% kapasitas lapang). Sebagai anak petak adalah perlakuan MVA sebanyak 100g inokulum/polibeg yang terdiri dari tanpa inokulasi dan diinokulasi dengan berbagai isolat MVA. Setiap kombinasi perlakuan diulang empat kali. Variabel yang diamati meliputi pertumbuhan tanaman (pertambahan diameter batang) yang diamati setiap minggu, bobot kering tanaman, serapan hara N dan P, derajat infeksi akar pada akhir percobaan. Hasil penelitian ini menunjukkan bahwa penurunan kadar air tanah menurunkan serapan unsur hara N dan P oleh tanaman. Pada kondisi kadar air tanah 80% kapasitas lapang diperoleh pertambahan diameter batang, serta serapan hara N, P tertinggi pada tanaman yang diinolulasi dengan Acaulospora Sp1. Pada kondisi kadar air tanah 60% kapasitas lapang, pertambahan diameter batang tertinggi diperoleh pada tanaman yang diinokulasi dengan Glomus sp.
KARAKTERISTIK TANAH DAN PERBANDINGAN PRODUKSI KELAPA SAWIT (Elaeis guineensis Jacq.) DENGAN METODE TANAM LUBANG BESAR DAN PARIT DRAINASE 2:1 PADA LAHAN SPODOSOL DI KABUPATEN BARITO TIMUR PROPINSI KALIMANTAN TENGAH - INDONESIA Surianto, Surianto; Rauf, Abdul; Sabrina, T.; Sutarta, Edi Sigit
Pertanian Tropik Vol 2, No 2 (2015)
Publisher : Pasca Sarjana FP USU

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Abstract

Spodosol soil of Typic Placorthod sub-group of East Barito District is one of the problem soils with the presence of hardpan layer, low fertility, low water holding capacity, acid reaction and it is not suitable for oil palm cultivation without any properly specific management of land preparation and implemented best agronomic practices. A study was carried out to evaluate the soil characteristic of big hole (A profile) and non big hole (B profile) system and comparative oil palm productivity among two planting systems. This study was conducted in Spodosol soil at oil palm plantation (coordinate X = 0281843 and Y = 9764116), East Barito District, Central Kalimantan Province on February 2014, by surveying of placic and ortstein depth and observing soil texture and chemical properties of 2 (two) oil palms soil profiles that have been planted in five years. Big hole system of commercial oil palm field planting on Spodosol soil area was designed for the specific purpose of minimizing potential of negative effect of shallow effective planting depth for oil palms growing due to hardpan layer (placic and ortstein) presence as deep as 0.25 - 0.50 m. The big hole system is a planting hole type which was vertical-sided with 2.00 m x 1.50 m on top and bottom side and 3.00 m depth meanwhile the 2:1 drain was vertical-sided also with 1.50 m depth and 300 m length. Oil palm production was recorded from year of 2012 up to 2014. Results indicated that the fractions both big hole profile (A profile) and non big hole profile (B profile) were dominated by sands ranged from 60% to 92% and the highest sands content of non big hole soil profile were found in A and E horizons (92%). Better distribution of sand and clay fractions content in between layers of big hole soil profiles of A profile sample is more uniform compared to B profile sample. The mechanical holing and material mixing of soil materials of A soil profile among the upper and lower horizons i.e. A, E, B and C horizons before planting that resulted a better distribution of both soil texture (sands and clay) and chemical properties such as acidity value (pH), C-organic, N, C/N ratio, CEC, P-available and Exchangeable Bases. Investigation showed that exchangeable cations (Ca, Mg, K), were very low in soil layers (A profile) and horizons (B profile) investigated. The low exchangeable cations due to highly leached of bases to the lower layers and horizons. Besides, the palm which was planted on the big hole system showed good adaptation and responsed positively by growing well of tertiary and quaternary roots that the roots were penetrable in to deeper rooting zone as much as >1.00 m depth. The roots can grow well and penetrate much deeper in A profile compared to undisturbed hard pan layer (B profile). The FFB (fresh fruit bunches) production of non big hole block was higher than big hole block for the first three years of production. This might be due to the high variation of monthly rainfall in between years of observation from 2009 to 2014. Therefore, the hardness of placic and ortstein as unpenetrable agents by rootsJurnal Pertanian Tropik ISSN Online No : 2356-4725Vol.2, No.2. Agustus 2015. (19) : 148- 158149and water to prevent water loss and retain the water in the rhizosphere especially in the drier weather. In the high rainfall condition, the 2:1 drain to prevent water saturation in the oil palm rhizosphere by moving some water in to the drain. Meanwhile the disturbed soil horizon (big hole area) was drier than undisturbance immediately due to water removal to deeper layers. We concluded that both big hole and 2:1 drain are suitable technology for Spodosol soil land especially in preparing of palms planting to minimize negative effect of hardpan layer for oil palm growth.Key words : Spodosol, Typic Placorthod, big hole, drain, fresh fruit bunches, hardpan, placic, ortstein
PENINGKATAN KETERSEDIAAN FOSFAT DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L) DENGAN MENGGUNAKAN TALAROMYCES PINOPHILUS INDIGENOUS DAN PUPUK SP36 PADA ANDISOL TERDAMPAK ERUPSI GUNUNG SINABUNG Sembiring, Mariani; Elfiati, Deni; Sutarta, Edi Sigit; Sabrina, T.
Pertanian Tropik Vol 2, No 3 (2015)
Publisher : Pasca Sarjana FP USU

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh Jamur pelarut Fosfat, Dosis Pupuk P dan kombinasi jamur Pelarut Fosfat dan Dosis Pupuk P terhadap Pertumbuhan, P-tersedia dan produksi tanaman kentang (Solanum tuberosum L) pada Andisol terdampak erupsi Sinabung. Parameter yang diamati: Berat kering tanaman diukur pada akhir masa vegetatif, Produksi tanaman, Serapan P tanaman dan Analisa P tersedia tanah,dengan metode Bray II diukur pada akhir masa vegetatif. Hasil penelitian menunjukkan bahwa Kombinasi perlakuan Jamur pelarut fosfat (T. pinophilus )dan SP36 berpengaruh terhadap peningkatan P-tersedia pada perlakuan J1P2 yaitu sebesar 71.65% bila dibanding dengan kontrol walaupun secara statistik tidak berpengaruh nyata. Pada parameter serapan P tanaman aplikasi perlakuan T. pinophilus dan SP36 berpengaruh nyata dalam peningkatan serapan P tanaman, perlakuan yang terbaik adalah T3P2 tetapi menurun dengan peningkatan dosis SP36 (P3=13g). Berat kering tanaman perlakuan T3P2 yang terbaik dan menurun dengan meningkatnya dosis SP36 (13 g). Peningkatan produksi tanaman kentang yang tertinggi yaitu J2P1 dengan produksi sebesar 1017.5g sedangkan tanaman kontrol 610 g.Peningkatan produksi tanaman kentang yaitu sebesar 66.8% lebih tinggi bila dibanding dengan kontrol. Aplikasi T. pinophilus sebanyak 20 mL dan 6.5g SP36 memiliki produksi yang terbaik, produksi menurun dengan peningkatan dosis T. pinophilus dan pupuk SP36.Kata kunci : Andisol, Dosis Pupuk P, tanaman Kentang, Talaromyces pinophilus
PENGARUH METODE KONSERVASI PADA TANAMAN KELAPA SAWIT (Elaeis gueneensis Jacq) TERHADAP STATUS UNSUR HARA N, P, K DAN C-ORGANIK TANAH mico saputra, whin themas; Rauf, Abdul; Sabrina, T.
Jurnal Tanah dan Sumberdaya Lahan Vol 6, No 1 (2019)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.208 KB) | DOI: 10.21776/ub.jtsl.2019.006.1.1

Abstract

Umumnya pada suatu lahan khususnya wilayah Sumatera masih minim kandungan N, P, K serta C-organik tanah. Upaya dalam mengatasi hal tersebut diperlukan tindakan secara serius salah satunya dengan menggunakan metode konservasi yang didasari penambahan bahan organik dengan pemberian kompos yang dapat memperbaiki sifat kimia tanah; N-total, P-tersedia dan K-total serta biologi tanah seperti C-organik. Penelitian menggunakan Rancangan Petak Terpisah (RPT)/Split Plot Design dengan 2 faktor dan 4 ulangan sebagai berikut: Faktor I tahun tanam (Petak Utama) terdiri dari 2 taraf perlakuan, yaitu: T1: 5 tahun tanam dan T2: 20 tahun tanam serta Faktor II metode konservasi (anak Petak) terdiri dari 3 taraf, yaitu: K1: Konvensional, K2: Piringan Cekung + Kompos dan K3: Rorak Individu + Kompos. Pengambilan sampel tanah dilakukan secara vertikal dengan membedakan bidang tempat dari titik koordinat yang telah ditentukan dengan 1 titik kedalaman 0-60 cm. Sampel tanah dianalisis di Laboratorium PT. Socfin Indonesia dan di Laboratorium Central Ilmu Tanah, Fakultas Pertanian Universitas Sumatera Utara. Hasil penelitian menunjukkan bahwa penerapan metode konservasi pada perlakuan konvensional (K1) adalah perlakuan terbaik khususnya dalam memperbaiki dan meningkatkan sifat kimia dan biologi tanah. Hal ini dibuktikan pada interaksi perlakuan konvensional (K1) tahun tanam 20 tahun, yang terlihat pada nilai P-tersedia sebesar 60,83 mg/kg. 
THE GROWTH OF OIL PALM VARIETIES (ELAEIS GUINEENSIS JACQ.) ON SUBSOIL MEDIA TREATED WITHSEVERAL DOSAGES OF NITROGEN FERTILIZER Khairani, Siti; Akoeb, Erwin Nyak; Sutarta, Edy Sigit; Sabrina, T.
Journal of Community Research and Service Vol 1, No 2 (2017)
Publisher : Center of Community Service of State University of Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jcrs.v1i2.9345

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AbstractOilpalmis one of important export commodities performing as the country’s main foreign exchange from the trade of crops.Nitrogen is a limiting factor of plant growth. This study aims to determine: 1) the appropriate dose of absorption of nitrogen and growth in some high yielding varieties of oil palm; 2) the superior varieties of oil palm crops that provide no effect from the nitrogen nutrients and; 3) the interaction between varieties and nitrogen fertilizer on nitrogen nutrient absorption efficiency. This research was conducted in Palm Oil Research Centre at the District of Deli Serdang, the Province of North Sumatra.The research used Factorial Random Block Design with 2 factors. The first factor is varieties (Avros 540, PPKS 239, Simalungun, Langkat and 718PPKS). The second factor is N fertilizer which consists of without N fertilizer, 25% fertilizer recommendation, 50% fertilizer recommendation, 75% fertilizer recommendation and 100% fertilizer recommendation. The results showed that the varieties of oil palm used have different characteristics on plant height, stem diameter and number of leaves. The Simalungun variety was the best variety and its combination with 100% recommendation N was the best result in increasing plant heightof oil palm. Meanwhile the combination with 50% recommendation N was the best result in increasing stem diameter and number of leavesof oil palm.Keywords: oilpalm, nitrogen fertilizer, variety
INCREASING THE PRODUCTIVITY OF A FEW VARIETIES OF ONION (ALLIUM ASCALONICUM L.) WITH THE APLICATION OF AMELIORANT Luta, Devi Andriani; Hanafiah, Diana Sofia; Sabrina, T.
Journal of Community Research and Service Vol 1, No 2 (2017)
Publisher : Center of Community Service of State University of Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jcrs.v1i2.9335

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AbstractThe Onion (Allium ascalonicum L.) which is cultivated with the ameliorant can expand its conventional functions as a seasoning to different purposes such as medicines and growth regulator. The purpose of this study is to determine the type and dose of ameliorant which are suitable in improving the productivity of a few varieties of onion (Allium ascalonicum L.). This research was conducted in Labuhan Deli District in the province of Sumatera Utara, Socfindo Laboratory and Final Disposal from February – June 2017. The experiment was carried out using a Randomized Block Design with 2 factors and 3 replications. The first factor is varieties consisting of 3 varieties (Bima Brebes, Super Philip, and Medan). the second factor are Ameliorant consisting of 5 dose levels (Control (without ameliorant), Biochar 0,4 kg/m2, biochar 0,8 kg/m2, Urban waste compost 1 kg and Urban waste compost 2 kg/m2). Parameters observed ie plant height (cm), Number of tillers per hill (tillers), and fresh weight production per m2. The results showed that varieties factor gave significantly of difference to the urban waste compost aplication 1 kg can increase the production of super Philip varieties onion with total fresh weight production 1203,57 g.Keywords: Onion, Varieties, Ameliorant
A RESISTANCE TEST OF OIL PALM VARIETIES (ELAEIS GUINEENSIS JACQ.) IN THE SALINE SOIL WITH AN ADDUCTION OF HUMIC ACID Gunawan, Hari; Rosmayati, Rosmayati; Sabrina, T.
Journal of Community Research and Service Vol 2, No 1 (2018)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jcrs.v2i1.9550

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Abstract The objective of the research was to determine theoil palm variety with saline resistance and identify the effective humic acid application dosage with a different salinity rate. This research was conducted in Percut Village.The method used was Randomized Block Design Factorial with 3 factors applied in to 6 varieties oil palm, humic acid dosage (3 dosages) and salinity rate (3 rate) with 3 replications. The results of this research showed that the salinity rate affected significantly to oil palm morphology in saline soil with humic acid adduction. In S0 (0 mmhos), Yangambi variety can increase oil palm plant height, number of leaves, root volume and dry weight of roots. Keywords : Humic Acid, Oil Palm, Saline, VarietyAbstract The objective of the research was to determine the oil palm variety with saline resistance and identifythe effective humic acid application dosage with a different salinity rate. This research was conductedin Percut Village. The method used was Randomized Block Design Factorial with 3 factors applied into 6 varieties oil palm, humic acid dosage (3 dosages) and salinity rate (3 rate) with 3 replications.The results of this research showed that the salinity rate affected significantly to oil palm morphologyin saline soil with humic acid adduction. In S0 (0 mmhos), Yangambi variety can increase oil palmplant height, number of leaves, root volume and dry weight of roots.Keywords : Humic Acid, Oil Palm, Saline, Variety
PERAN APLIKASI PEMBENAH TANAH TERHADAP SIFAT KIMIA TANAH PADA TANAMAN BAWANG MERAH Luta, Devi Andriani; Siregar, Marahadi; Sabrina, T.; Harahap, Fitra Syawal
Jurnal Tanah dan Sumberdaya Lahan Vol 7, No 1 (2020)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2020.007.1.15

Abstract

The aim of the study was to elucidate the role of ameliorant application on the chemical properties of soil on onion plants. This research was carried out at the Deli Sub-district research area and soil chemical analysis was carried out in the research and technology laboratory of North Sumatra University and experimental garden laboratory and University of Pembangunan Panca Budi Medan. The research includes land preparation, plant preparation, maintenance such as watering, soil improvement applications (biochar and municipal waste compost) according to treatment, weed control, insertion and management of plant pests.The study used a randomized block design with 2 factors and 2 blocks. Further test using orthogonal contrast test. The results showed that ameliorant application was able to improve pH, Organic-C, CEC and N-total- N of the soil.