Muhammad Thamrin
Balai Pengkajian Teknologi Pertanian Sulawesi Selatan Jln. Perintis Kemerdekaan Km. 17,5 Makassar,Sulawesi Selatan

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KAJIAN PEMUPUKAN N, P, DAN K TERHADAP JAGUNG (Zea mays Linn) PADA LAHAN KERING TANAH TYPIC USTROPEPTS Tandisau, Peter; Thamrin, Muhammad
Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Vol 12, No 2 (2009): Juli 2009
Publisher : Jurnal Pengkajian dan Pengembangan Teknologi Pertanian

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Kajian Pemupukan  N, P, Dan K  Terhadap Jagung (Zea mays Linn) Pada Lahan Kering Tanah Typic Ustropepts. Assessment of N, P, and K fertilizer to upland maize on Typic Ustropepts.   Assessment was conducted in Jeneponto South Sulawesi, started on October 2004 until March 2005. The objective was to know respon of maize (hybrid and non hybrid variety) to N, P, K fertilizer on upland and to compare farmer’s practice and complete NPK application. A split plot design with five replications was used. Maize variety was used as main plot, and omission plot (fertilizer application) as sub plot. Result showed as follows : 1) Maize respond to N, P, K fertilizer: 2) Un complete fertilizers application caused growth and field quality of maize become lower (10-30%). Complete fertilizers application (N,P,K:200:35:100) indicated much more higher yield (5,5 t/ha) than farmer’s practice (<150 N) with yield of 3,8 t/ha. Hybrid variety of BISI-2 give higher yield (5,67 t/ha) than non hybrid variety of Lamuru (3,3 t/ha). On dry land of typic Ustropepts, under dry climate, nutrient deficiency of N, P, K (low nutrient status), in Jeneponto, N, P, K fertilizer application suggested were 200:35:100 kg/ha or equally to 440 kg Urea, 223 kg SP-36, 191 kg KCl/ha, plus 500 kg organic metter/ha, with dibbling application, plant spacing of 75 x 20 cm2, one plant/hill.  Kajian dilaksanakan di Kabupaten Jeneponto Sulawesi Selatan pada bulan Oktober 2004 sampai Maret 2005. Tujuan kajian mengetahui tanggap tanaman jagung hibrida dan non hibrida terhadap pupuk N, P, dan K pada tanah Typic Ustropepts di lahan kering dan membandingkan aplikasi pemupukan cara petani dan lengkap NPK. Kajian dilakukan melalui pendekatan petak omisi dengan Rancangan Percobaan Petak Terpisah dengan lima ulangan, dimana varietas merupakan petak utama, sementara petak omisi (pemupukan) sebagai anak petak. Hasil kajian menunjukkan sebagai berikut: 1) Tanaman jagung tanggap terhadap pupuk N, P, dan K: 2) Pemberian pupuk yang tidak lengkap menyebabkan pertumbuhan dan hasil berkurang  (10-30%). Aplikasi pupuk lengkap N, P, dan K (200:35:100) menunjukkan hasil lebih tinggi (5,5 t/ha) dibanding cara petani (<150 N) yang hanya mencapai 3,8 t/ha. Jagung hibrida BISI-2 hasilnya lebih tinggi dari pada jagung non hibrida varietas Lamuru  (3,34 t/ha). Pada lahan kering Typic Ustropepts, iklim kering, kekurangan hara N, P, dan K (status hara rendah) di Jeneponto, anjuran aplikasi pupuk untuk jagung adalah 200:35:100 kg/ha atau setara dengan 440 kg Urea, 223 kg SP-36, 191 kg KCl/ha, disertai dengan 500 kg pupuk organik/ha. Aplikasi pupuk disarankan secara tugal, jarak tanam 75x20 cm2, satu tanaman/lubang.  
KAJIAN WAKTU STRANGULASI TERHADAP PEMBUNGAAN JERUK PAMELO ‘CIKONENG’ (Citrus grandis (L.) Osbeck) Thamrin, Muhammad
Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Vol 12, No 2 (2009): Juli 2009
Publisher : Jurnal Pengkajian dan Pengembangan Teknologi Pertanian

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An Assessment Time of Strangulation on Flowering Induction of Pummelo ‘Cikoneng’ (Citrus grandis (L.) Osbeck). Field assessment was conducted at Farmer’s Field Bantarmara Village, Cisarua, Sumedang region, West Java from August 2007 to May 2008, to determine the effect of different strangulation times on flowering induction of Pummelo during flowering-off season. Three strangulation times (1,2 and 3 months after harvest, MAH) were arranged in randomized complete block design with 6 (six) replications. An assessment results showed that strangulation at 3 MAH effectively induced flowering appearance (83%) and increased numbers of generative shoots, flowering cluster, bud, blooming, fruit formation and fruit setting. On the other hand, all treated plants had higher C/N ration than control. Kajian lapang dilaksanakan di Tanah Petani (TP) Bantarmara, kecamatan Cisarua, kabupaten Sumedang, Jawa Barat dari bulan Agustus 2007 sampai Mei 2008, untuk melihat waktu strangulasi yang tepat untuk menginduksi bunga diluar musim. Tiga waktu strangulasi (1, 2 dan 3 bulan setelah panen, BSP) disusun menurut rancangan acak kelompok dan 6 (enam) ulangan. Hasil kajian menunjukkan bahwa waktu strangulasi 3 BSP cukup efektif menginduksi jumlah muncul bunga (83%), tetapi mempengaruhi jumlah tunas generative, kluster bunga, kuncup bunga, bunga mekar, buah terbentuk dan fruit set masing-masing 32,67; 28,17; 220,00; 143.33; 61,17 dan 39,02%. Di samping itu, rasio C/N daun pada semua perlakuan lebih tinggi dari control.
EVALUASI PROGRAM PENYULUHAN PERTANIAN DAN PENGARUH FAKTOR SOSIAL EKONOMI TERHADAP PENDAPATAN PETANI PADI SAWAH Thamrin, Muhammad; Khair, Hadriman; Ryantika, Ade
JURNAL ILMU PERTANIAN "AGRIUM" Vol 16, No 3 (2011)
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AbstractThe results of research using descriptive analysis shows that the agricultural extension program in Medan Krio Kecamatan Sunggal BPP is Legowo 4:1 cropping system, establishment of Gapoktan, Integrated Crop Management Field School (SLPTT), RDKK Subsidized Fertilizer and Agribusiness Program Rural (PUAP). While the research results obtained using multiple linear regression that simultaneously socioeconomic factors, education, experience, area and number of dependents are able to explain changes in income of paddy farmers at 99%. Partial factors of education and area of land affected by the real-value t count> t-table and the experience factor and the number of dependents does not affect real with t-values calculated <t-table on the  income of paddy farmers at 95% confidence level (a=5%). Key Words : Agricultural Extension Program, Income Farmers Rice
PENGARUH FAKTOR SOSIAL EKONOMI TERHADAP PENDAPATAN PETANI PINANG Thamrin, Muhammad; Herman, Surna; Hanafi, Fahrul
JURNAL ILMU PERTANIAN "AGRIUM" Vol 17, No 2 (2012)
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AbstractThe research was conducted using case study methods (case study). This study aims to determine how to influence the level of capital, labor, experience, education and age of farmers income levels and how the feasibility of areca nut farm. Research hypotheses are tested using multiple linear regression and the method of R / C ratio (Revenue / Cost). From the research results obtained by the R-square 0.98 identifies that it is simultaneously (synchronously) no significant effect between capital, labor, experience, education and age of the areca farmers income by 98% the rest influenced by other variables not examined. From the test results are obtained stasistik multiple R-square value of 0.99% means that overall there is a strong influence between capital, labor, experience, education and age of areca farmers income levels, it is supported by the calculated F-value> F-table at the 95% confidence level (a 0.05) thereby H0 refused and H1 accepted. No effect of partial capital, experience and age on the level of areca farmers income in this case is supported by the value t count> t-table, while the labor and education had no effect on the income level of farmers nut on a 95% confidence level. The results of the calculation, the nut farm viability obtained was R / C ratio of 1.82. This means that the nut farm is now worth the effort or can provide benefits.Keywords: sosial-economy, farmers income, farmer
PROSPEK AGRIBISNIS INDUSTRI RUMAH TANGGA TEMPE DI KOTA MEDAN Thamrin, Muhammad; Amin Nasution, Rakhmad
JURNAL ILMU PERTANIAN "AGRIUM" Vol 18, No 3 (2014): COVER
Publisher : JURNAL ILMU PERTANIAN "AGRIUM"

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Prospects for agri-research purposes fermented soybean home industry is to determine the factors that affect demand and supply fermented soybean, in this study in terms of demand and supply. Sampling method using stratified random sampling. Analysis method using multiple linear regression. The results of the study for the simultaneous demand factor is no significant effect between the level of income, tastes, number of dependents and the expectation of future fermented soybean demand is equal to 95% and 82% for supply factors simultaneously which means no real effect between prices fermented soybean, soy price , technology, and government policy towards the fermented soybean offers Calculate the value of the F-count > F-table at the 95% confidence level. Partially for demand and supply factors affect the income variable with value t count>t table while the other variable demand factors (taste, number of dependents and future expectations), supply factors (fermented soybean prices, technology and government policy) has no effect with the calculated value of t-count<t-table at the 95% confidence level. Keywords: Demand, Supply, fermented soybean
MODIFIKASI KIMIA KARET ALAM SIKLIS (CYCLIC NATURAL RUBBER/CNR) DENGAN TEKNIK GRAFTING: MENGGUNAKAN MONOMER METIL METAKRILAT DAN INISIATOR BENZOIL PEROKSIDA Siregar, M. Said; Thamrin, Muhammad; WS, Basuki; ,, Eddiyanto
JURNAL ILMU PERTANIAN "AGRIUM" Vol 17, No 3 (2012)
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AbstractThe research of grafting methyl methacrylate (MMA) onto Cyclic Natural Rubber (CNR) has been carried out. Benzoyl Peroxide (BPO) was used as a inisiator and temperature condition at 90oC with variation of time 1 and 2 hours. Grafting process was done with technique of reflux in a tree-neck flask  with condenser and oil bath. Spectra analysis FTIR performed for determine the presence of grafted MMA on the backbone of CNR. The results showed that the product CNR-g-MMA was formed with the marked appearance of the absorption peak wave numbers at 1731 and 1730 cm-1 (carbonyl group absorption) typical for carbonyl (C = O) of metal methacrylate. The degree of grafting increased with the increasing time grafting.Keywords: grafting, cyclic natural rubber, mathylmetacrilate, benzoyl peroxide
ANALISIS SOSIAL EKONOMI DAN PEMASARAN PERIKANAN LAUT DI KELURAHAN BELAWAN I KOTA MEDAN Thamrin, Muhammad
JURNAL ILMU PERTANIAN "AGRIUM" Vol 16, No 3 (2011)
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AbstractThe results showed that the value of the coefficient of determination R-square 0.93, can be interpreted that the simultaneous possession of fishing gear status factors, capital, work ethic and marketing types mentioned above were able to explain changes in fishing revenues 93%. Partially work ethic and marketing factors significantly affect the value t count> t table. While the status of the fishing gear and ownership of capital does not significantly affect the value of t calculated <t table against the income of fishermen in the 95% confidence level (a = 5%).Key words: marketing,  income of fishermen
PENGARUH FAKTOR SOSIAL EKONOMI TERHADAP PENDAPATAN PETANI JAGUNG Rangkuti, Khairunnisa; Siregar, Sasmita; Thamrin, Muhammad; Andriano, Rui
JURNAL ILMU PERTANIAN "AGRIUM" Vol 19, No 1 (2014)
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The aims of this study was to determine the effect of socioeconomic factors on the income of corn farmers and to know the corn farming efficiency in Lau Tawar Village, District Tanah Pinem, Dairi. Sampling method used was a random sampling method to take a simple random. Data analysis method used was multiple linear regression analysis. The results of the study based on the results of multiple linear regression analysis were significantly influence between the land and labor of the corn farmer’s income and there is no real influence or not significant between the capital, farming experience and the number of dependents of the corn farmer’s income. And based on the analysis of O/I ratio, maizefarming in the study area has been efficient.  Keywords: socio-economic factors, efficiency, revenue, corn
KAJIAN KANDUNGAN SENYAWA PHENOL DAN SENYAWA PAH PADA ASAP CAIR CANGKANG KELAPA SAWIT (ACCKS) REDESTILASI YANG DIHASILKAN PADA TEMPERATUR TINGGI Ardilla, Desi; Thamrin, Muhammad; WS, Basuki; ,, Eddiyanto
JURNAL ILMU PERTANIAN "AGRIUM" Vol 18, No 1 (2013)
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Pyrolysis process is carried out in this study using a furnace, the temperature is set ranging from 600,700,800,900 ᵒ C using condenser cooling spiral type. Liquid smoke oil palm shell (ACCKS) produced centrifuge with speed 380 rpm for 30 min, filtered through filter paper and distilled at a temperature of 125 ᵒ C for 20 minutes ACCKS redestilasi analyzed the content of the compound phenol compound and polycyclic aromatic hydrocarbons (PAH) using a GCMS.To temperatures of 600 to 900ᵒC was not identified PAH compounds and the higher the temperature the lower the phenol compounds whereas the higher acetic acid compounds.Keuwords: ACCKS redestilation, phenol content, PAH, quality 
ANALISIS USAHATANI UBI KAYU (Manihot utilissima) Thamrin, Muhammad; Mardhiyah, Ainul; Marpaung, Samsul Efendi
JURNAL ILMU PERTANIAN "AGRIUM" Vol 18, No 1 (2013)
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This research was conducted to know the effect of production factors (land, seeds, labor, and fertilizers) on the cassava farming income, to know the feasibility of the cassava farming. Census method is used on this research, took all the population of the sample through the method of Cobb-Douglas analysis of, Descriptive and R / C ratio. The results of the research of land variable, seeds, labor and fertilizers significant effect and simultaneously (synchronously) to the income of the cassava farmers.                 In partial significant effect of land variable. Meanwhile the variable of seeds, labor and fertilizers had no significant effect on the the cassava farming income. Based on the analysis of the R / C ratio with a value of 7.5> 1, the cassava farming in the area of research deserves to be developed.Keywords : analysis, income, farming