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All Journal MEDIA PETERNAKAN - Journal of Animal Science and Technology Jurnal Hortikultura Jurnal Ilmu Ternak Veteriner Animal Production : Indonesian Journal of Animal Production Societa: Jurnal Ilmu-Ilmu Agribisnis JURNAL PENDIDIKAN TAMBUSAI Applied Engineering and Technology
S Anwar
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Veterinary

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Penetapan Rekomendasi Pemupukan N, P, dan K Tanaman Duku Berdasarkan Analisis Daun Hernita, Desi; Poerwanto, Rhoedy; Susila, Anas D; Anwar, S
Jurnal Hortikultura Vol 22, No 4 (2012): Desember
Publisher : Indonesian Center for Horticultural Research and Development

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Abstract

Duku mempunyai perakaran yang dalam, sehingga sulit untuk memperoleh sampel tanah yang representatif pada daerah tersebut, sehingga lebih tepat menggunakan analisis daun. Status hara daun merupakan gambaran status hara aktual dalam tanah. Penelitian bertujuan untuk menentukan kategori status hara N, P, dan K, serta rekomendasi pemupukan optimum berdasarkan status hara tersebut pada tanaman duku. Penelitian dilaksanakan di Kecamatan Kumpeh Ulu, Kabupaten Muaro, Jambi pada Bulan Desember 2008 sampai dengan April 2012.  Rancangan penelitian menggunakan acak kelompok dengan lima ulangan.  Perlakuan dosis pupuk N (0, 400, 800, 1.200, dan 1.600 g N) , P (0, 500, 1.000, 1.500, dan 2.000 g P2O5), K (0,600, 1.200, 1.800, dan 2.400 g K2O/tanaman/tahun). Hasil penelitian menunjukkan bahwa status hara N sangat rendah (< 1,81%), rendah (1,81 ≤ N < 2,82%), dan sedang (≥ 2,82%), status hara P sangat rendah (< 0,09%), rendah (0,09 ≤ P < 0,17%), dan sedang (≥ 0,17%), serta status hara K sangat rendah (< 1,16%), rendah (1,16 ≤ K < 2,19%), dan sedang (≥ 2,19%).  Rekomendasi pemupukan pada tanaman duku untuk status hara sangat rendah yaitu 858 g N, 1.770 g P2O5, dan 1.900 g K2O/tanaman/tahun, untuk status hara rendah, 588 g N, 1.335 g P2O5, dan 1.107 g K2O/tanaman/tahun, sedangkan berdasarkan pendekatan multinutrien 920 g N, 1.565 g P2O5, dan 1.488 g K2O/tanaman/tahun (biaya produksi terendah). Rekomendasi pemupukan N, P, dan K berdasarkan analisis daun dapat diterapkan pada pertanaman duku di Indonesia dan meningkatkan produksi serta kualitas buah duku. Duku has been deep roots making it difficult to obtain a representative sample of soil at the root zone, so the more appropriate used of leaf analysis. Leaf nutrient status was picture of the actual nutrient status of the soil. The aimed of this study was to determine leaf N, P, K level category and recommendation study determine the optimum fertilizer rate for each nutrient level category on duku plant. The experiment was conducted at Kumpeh Ulu District, Muaro Jambi Regency, in Jambi Province, from December 2008 to April 2012. Each treatments were arranged in randomized block design with five replications. The treatments were N (0, 400, 800, 1,200, 1,600 g N/plant/year), P (0, 500, 1,000, 1,500, 2,000 g P2O5/plant/year), and K (0, 600, 1,200, 1,800, 2,400 g K2O/plant/year). The results showed that leaf nutrient status of N was very low (< 1.81%),  low (1.81 ≤ N < 2.82%), and medium (≥ 2.82%), status of P was very low (< 0.09%), low (0.09 ≤ P < 0.17%), and medium (≥ 0.17%); status of K was very low (< 1.16%), low (1.16 ≤ K < 2.19%), and medium (≥ 2.19%).  Fertilizer recommendation  rate on duku plant for very low nutrient status were 858 g N, 1,770 g P2O5, and 1,900 g K2O/plant/year, low nutrient status were 588 g N, 1,335 g P2O5, and 1,107 g K2O/plant/year, multinutrient approach were 920 g N, 1,565 g P2O5, dan 1,488 g K2O/plant/year (lower production cost). Recommendation of fertilizer N, P, and K based on leaves analysis can be applied on duku in Indonesia and increase production and fruit quality of duku.
Hubungan antara Ketersediaan Hara Tanah dengan Cemaran Getah Kuning pada Buah Manggis Martias, -; Poerwanto, R; Anwar, S; Hidayati, R
Jurnal Hortikultura Vol 22, No 2 (2012): Juni 2012
Publisher : Indonesian Center for Horticultural Research and Development

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Abstract

ABSTRAK. Cemaran getah kuning merupakan masalah utama yang menyebabkan rendahnya kualitas buah manggis untuk ekspor. Ketersediaan hara di dalam tanah diduga berpengaruh terhadap cemaran getah kuning. (Tambahkan informasi pada level konsentrasi hara Ca dan Mn yang bagaimana yang berpengaruh terhadap frekuensi/insidensi getah kuning pada manggis).  Penelitian hubungan antara ketersediaan hara tanah dengan cemaran getah kuning pada buah manggis dilakukan di Desa Karacak, Barengkok, Garogek, dan Pusaka Mulia (Jawa Barat),  Koto Lua, Baringin, Pakandangan, Padang Laweh, Lalan (Sumatera Barat), dan Sukarame (Lampung), dari bulan  Desember 2009 sampai Juli 2011 (Perlu ditambahkan informasi yang jelas perbedaan lokasi yang dipilih apakah merepresentasikan adanya perbedaan yang mencolok kasus cemaran getah kuning manggis, sehingga pembaca bisa membaca alasan penentuan lokasi tersebut, mengingat cemaran getah kuning menjadi factor penting penelitian ini). Lokasi penelitian di tingkat desa ditentukan dari hasil wawancara menggunakan teknik purposive sampling dengan pedagang pengumpul di tingkat kecamatan dan desa. Pada setiap lokasi dari 10 sentra produksi yang terpilih, ditentukan 10 tanaman yang representatif  untuk diamati, setiap tanaman diambil 100 buah sampel. Buah manggis yang diamati untuk seluruh lokasi mencapai 10.000 buah (1.000 buah untuk setiap lokasi). Sampel tanah diambil dari zona perakaran pada masing-masing pohon serta dianalisis sifat kimia dan ketersediaan hara tanahnya. Hasil penelitian menunjukkan bahwa cemaran getah kuning pada buah manggis secara langsung dikendalikan oleh ketersediaan Ca dan Mn dalam tanah. Ketersediaan K, P, Mg, Cu, Zn, dan B dalam tanah secara tidak langsung berpengaruh terhadap cemaran getah kuning (Mekanismenya bagaimana? Perlu dijelaskan). Kalsium berperan mengeliminasi, sedangkan Mn menginduksi cemaran getah kuning pada aril (daging buah) maupun kulit buah manggis. Hasil penelitian ini dapat digunakan sebagai landasan untuk mengendalikan cemaran getah kuning pada buah manggis.ABSTRACT. Martias, Poerwanto, R,  Anwar, S, and Hidayati, R 2012. Relationship between Nutrient Availability of Soil with Yellow Sap Contamination on Mangosteen Fruits. Yellow sap contamination on mangosteen fruits is a major problem that causes poor quality on mangosteen fruits for export. Soil nutrients availability would  be expected influence directly and indirectly in eliminating or inducing yellow sap contamination. Research relationship between nutrients availability with yellow sap contamination on mangosteen fruits was  done in some mangosteen production center areas in the Village Karacak, Barengkok, Garogek, and Pusaka Mulia (West Java), Koto Lua, Baringin, Pakandangan, Padang Laweh, and Lalan (West Sumatera), and Sukarame (Lampung), from December 2009 to July 2011. Research sites at the village level were determined by interviewing traders at district and village levels using purposive sampling technique. At each location of 10 from center production that was selected, determined 10 plants representative to observe, each plant taken 100 fruits sample. Mangosteen fruits were observed for all sites reach 10 thousand pieces (1,000 pieces for each location). Soil samples were taken at the root zone of each tree and analyzed the chemical properties and soil nutrient availability. The results showed that the yellow sap contamination of mangosteen fruits was directly controlled by the availability of Ca and Mn  in the soil. The availability of K, P, Mg, Cu, Zn, and B in the soil indirectly affected yellow sap contamination. Calcium played to eliminate and Mn contributed to induces yellow sap contamination, either aryl and the skin of mangosteen fruits. The results of  this study can be used as the basis for the study contaminat control yellow sap of the  mangosteen fruits.
The Growth, Yield and Quality of Elephant Grass (Pennisetum purpureum) Spesific Toleran of Acid Soils by Mutagenesis with Ethylmethane Sulfonate Munasik, Munasik; Sutrisno, CI; Anwar, S; Prayitno, CH
ANIMAL PRODUCTION Vol 14, No 2 (2012): May
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

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Abstract

The purpose of this research was to know the effect of ethylmethane sulfonate (EMS) on the growth, yield and quality of Elephant grass.  The experimental method with completely randomized design (CRD) was applied.  Fifeteens plot area 2 x 3 m2 were used in this experiment.  There were three treatments and five replications. The treatments consisted of R0 = Elephant grass control, R1 = Elephant grass with 0.1% EMS treatment, and R2 = Elephant grass with 0.2% EMS treatment.  The variables were the development (height of plant, the number of leaf, the leaf area and ratio of stem to leaf), yield (forage/plant, forage/plot and dry matter yield and quality (dry matter, crude protein and crude fiber content) of Elephant grass. These results of variance analysis showed that the treatments significantly affected  on  the height of plant, the forage yield/plant and the crude protein content but not significantly affected on the number of leaf, the leaf area, ratio of stem to leaf, forage yield/plot, dry matter yield, dry matter and crude fiber content.Key words : ethylmethane sulfonate, Pennisetum purpureum, growth, yield, quality Animal Production 14(2):87-91
Crude Protein and Crude of Fiber Benggala [Panicum Maximum] and Elephant [Pennisetum Purpureum] Grasses on Drought Stress Condition Purbajanti, ED; Anwar, S; Widyati, S; Kusmiyati, F
ANIMAL PRODUCTION Vol 11, No 2 (2009): May
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

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Abstract

Knowledge of crop response to water is essential for  proper irrigation management. Research  was conducted at Forage Crop Laboratory of Animal Nutrition Department, Faculty Of Animal Husbandry, Diponegoro University  during 9 month  trying two type grass that  were benggala ( Panicum maximum) and elephant  ( Pennisetum purpureum) with treatment of the following dry stres : S0 = control, without  stress; S1 =  1 times drought stress,  S2 =  2 times drought stress  , and S3 =  3 times  drought stress by lay out of complete random design( factorial pattern). Parameter perceived were( 1) forage production , (2) dry matter production, (3) percentage of crude protein, and (4) percentage of crude fibre. Data collected to be analysed  by analysis of varians  continued with Duncan multiple range test. Result of research indicate that forage production of  elephant grass  (103,79 g/pot) bigger than  benggala (53,08 g/pot). Dry matter production of elephant grass was   18,77 g/pot  higher than  benggala  grass( 14,54 g/pot).  Drought stres do not affect to forage  production  also  dry matter production : Percentage of crude protein  of  benggala grass (9,10%) higher than elephant grass (7,02%), while percentage crude fibre of benggala grass (35,64%) higher than elephant grass (31,67%). Drought stres do not influence percentage of crude protein  and crude fibre of benggala and elephant grasses. Conclusion from research were (1) elephant grass  have higher forage production  and  dry matter production than benggala grass (2) percentage of crude protein and crude fibre of benggala grass  higher  than elephant grass, (3) drought stres do not  affect to forage production , dry matter production, percentage of crude protein  and crude fibre. (Animal Production 11(2): 109-115 (2009) Key Words : crude protein, fiber, drought stress
ANALISIS TANGGAPAN PEMBUDIDAYA TERHADAP KEGIATAN BUDIDAYA IKAN DI KAWASAN MINAPOLITAN KECAMATAN GANDUS KOTA PALEMBANG Utpalasari, Rih Laksmi; Anwar, S
Societa: Jurnal Ilmu-Ilmu Agribisnis Vol 7, No 2 (2018): Societa: Jurnal Penelitian Ilmu-ilmu Agribisnis
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jsct.v7i2.1513

Abstract

ABSTRACT Target production of freshwater fish cultivation in 2014-2018 amounted to 13,227.77 tons for all fish cultivation. The production of fish in Palembang city in 2014 consists of catching the general waters of the type of cork fish whose production reaches 1.96.24 tons. Meanwhile, freshwater fish production consisted of 6,420.75 tons of catfish, 3,374 tons of catfish, 634.07 tons of indigo, 765.70 tons of gouramy (DPPK, Palembang 2014). The purpose of this study is to describe the process of socio-economic activities that take place in the life of the community and analyze the socio-economic factors that affect the income of freshwater fish farmers. The research location in Gandus sub-district and the method used is survey method. The results showed that fish farmers in Gandus sub-district had an average age of 42 years, with an average age of 2.9 years. Fish farmers on average only have high school education and do business as additional income. Selection of the most cultivated location is in the tributary of the river Musi. as much as 70%. Most of the cultivators run their own fish cultivation business that is equal to 70%. Average all cultivators agree on the existing activities on the POKDAKAN. Harvest activity is mostly done 3 times in 1 year that is for type of catfish farming.ABSTRAK Target produksi budidaya ikan air tawar pada tahun 2014-2018 adalah sebesar 13.227,77 ton untuk seluruh ikan budidaya. Adapun produksi ikan kota Palembang pada tahun 2014 terdiri dari  tangkapan perairan umum jenis ikan gabus yang produksinya mencapai 1.96,24 ton. Sedangkan produksi budidaya ikan air tawar yang terdiri dari kan patin sebesar 6.420,75 ton, lele 3.374 ton, nila 634,07 ton, gurami 765,70 ton  (DPPK, Palembang 2014). Tujuan dari penelitian ini untuk mendiskripsikan proses kegiatan sosial ekonomi yang berlangsung dalam kehidupan masyarakat dan menganalisis faktor-faktor sosial ekonomi yang mempengaruhi pendapatan petani budidaya ikan air tawar. Lokasi penelitian di kecamatan Gandus dan metode yang digunakan adalah metode survei. Hasil penelitian menunjukan bahwa pembudidaya ikan di kecamatan Gandus mempunyai usia rata-rata 42 tahun, dengan usia usaha rata-rata 2,9 tahun. Pembudidaya ikan rata-rata hanya berpendidikan SMA dan melakukan usaha sebagai penghasilan tambahan. Pemilihan lokasi budidaya yang paling banyak dilakukan adalah di anak sungai sungai Musi. sebanyak 70%. Sebagian besar pembudidaya menjalankan sendiri kegiatan usaha budidaya ikan yaitu sebesar 70%. Rata rata semua pembudidaya setuju terhadap kegiatan yang ada pada POKDAKAN. Kegiatan panen paling banyak dilakukan 3 kali dalam 1 tahun yaitu untuk jenis budidaya ikan lele.
Genetic-Phenotypic Variability and Correlation between Morphology-Anatomy-Physiology Characteristics and Dry Matter Yield of Polyploidized Forage Grasses under Aluminum Stressed Condition Anwar, S
ANIMAL PRODUCTION Vol 9, No 1 (2007): January
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

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Abstract

The study was conducted with the aim to know the genetic-phenotypic variability (heritability value), and correlation between morphology-anatomy-physiology characters and dry matter yield (DMY) of polyploidized forage grasses under aluminum (Al) stressed condition.  A total of 16 forage grass genotypes (polyploid and diploid Brachiaria brizantha, Brachiaria decumbens, Setaria sphacelata, Setaria splendida, Panicum muticum, Panicum maximum, Pennisetum purpureum, and Pennisetum purpupoides) were subjected to Al-stressed (16 mM Al2(SO4)3).  The treatments were allotted to a Randomized Completely Block Design with monofactorial pattern (genotypes) and 5 blocks in each treatment.  The morphology-anatomy-physiology characteristics evaluated were plant height, leaf number, tiller number, leaf color, chlorophyll content, stomata number, chloroplast number, leaf nitrate reductase activity, dry matter,  wet matter yield, dry matter yield, stress tolerance index and pH media.  Results showed the polyploidization increased stress tolerance index of grasses.  The genetic-phenotypic variability (heritability value) estimates for all morphology-anatomy-physiology characteristics were high.  Most morphology-anatomy-physiology characteristics, except leaf number, chlorophyll content and chloroplast number, had significant correlation to dry matter yield. In conclusion, evaluation on selection progress of dry matter yield of forage grasses can be effectively done by selection for yield of wet matter, plant height, leaf color, branch number, stomata number, leaf nitrate reductase activity, pH media, and dry matter simultaneously. (Animal Production 9(1): 23-29 (2007) Key Words: selection, genetic-phenotypic variability, forage grass, aluminum stress
Studi Komposisi Mineral Tepung Batu Bukit Kamang Sebagai Bahan Baku Pakan Sumber Mineral . Khalil; S Anwar
Media Peternakan Vol. 30 No. 1 (2007): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Abstract

The study was conducted to determine mineral content of limestone originated from natural deposit of Bukit Kamang for feedstuff. Six samples were prepared and chemically analyzed. The first was limestone in meal form as a product of local milling industry. Another five samples were deposit components with different color of blackish, dark blue, blue, light blue and white. There was 21 kinds of mineral determined which were divided into 3 groups: macros (Ca, P, Mg, Na, K, Cl and S), trace minerals (Mn, Zn, Fe, Cu, Se, Co and Mo) and toxic elements (As, F, Hg, Cd, Pb, Ni and Cr). The results showed that Bukit Kamang's limestone contained considerable high essential minerals of Ca, Se, Fe and Mn. The limestone consisted of 38%-40% Ca, 388 ppm Se, 295 ppm Fe and 205 ppm Mn. There were two toxic elements detected: Pb and Cd, but their concentration was found relatively low: 28 and 7 ppm, respectively. Keywords: mineral content, limestone, Bukit Kamang, toxic
Hubungan antara Ketersediaan Hara Tanah dengan Cemaran Getah Kuning pada Buah Manggis - Martias; R Poerwanto; S Anwar; R Hidayati
Jurnal Hortikultura Vol 22, No 2 (2012): Juni 2012
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v22n2.2012.p111-119

Abstract

ABSTRAK. Cemaran getah kuning merupakan masalah utama yang menyebabkan rendahnya kualitas buah manggis untuk ekspor. Ketersediaan hara di dalam tanah diduga berpengaruh terhadap cemaran getah kuning. (Tambahkan informasi pada level konsentrasi hara Ca dan Mn yang bagaimana yang berpengaruh terhadap frekuensi/insidensi getah kuning pada manggis). Penelitian hubungan antara ketersediaan hara tanah dengan cemaran getah kuning pada buah manggis dilakukan di Desa Karacak, Barengkok, Garogek, dan Pusaka Mulia (Jawa Barat), Koto Lua, Baringin, Pakandangan, Padang Laweh, Lalan (Sumatera Barat), dan Sukarame (Lampung), dari bulan Desember 2009 sampai Juli 2011 (Perlu ditambahkan informasi yang jelas perbedaan lokasi yang dipilih apakah merepresentasikan adanya perbedaan yang mencolok kasus cemaran getah kuning manggis, sehingga pembaca bisa membaca alasan penentuan lokasi tersebut, mengingat cemaran getah kuning menjadi factor penting penelitian ini). Lokasi penelitian di tingkat desa ditentukan dari hasil wawancara menggunakan teknik purposive sampling dengan pedagang pengumpul di tingkat kecamatan dan desa. Pada setiap lokasi dari 10 sentra produksi yang terpilih, ditentukan 10 tanaman yang representatif untuk diamati, setiap tanaman diambil 100 buah sampel. Buah manggis yang diamati untuk seluruh lokasi mencapai 10.000 buah (1.000 buah untuk setiap lokasi). Sampel tanah diambil dari zona perakaran pada masing-masing pohon serta dianalisis sifat kimia dan ketersediaan hara tanahnya. Hasil penelitian menunjukkan bahwa cemaran getah kuning pada buah manggis secara langsung dikendalikan oleh ketersediaan Ca dan Mn dalam tanah. Ketersediaan K, P, Mg, Cu, Zn, dan B dalam tanah secara tidak langsung berpengaruh terhadap cemaran getah kuning (Mekanismenya bagaimana? Perlu dijelaskan). Kalsium berperan mengeliminasi, sedangkan Mn menginduksi cemaran getah kuning pada aril (daging buah) maupun kulit buah manggis. Hasil penelitian ini dapat digunakan sebagai landasan untuk mengendalikan cemaran getah kuning pada buah manggis. ABSTRACT. Martias, Poerwanto, R, Anwar, S, and Hidayati, R 2012. Relationship between NutrientAvailability of Soil with Yellow Sap Contamination on Mangosteen Fruits. Yellow sap contamination on mangosteen fruits is a major problem that causes poor quality on mangosteen fruits for export. Soil nutrients availability would be expected influence directly and indirectly in eliminating or inducing yellow sap contamination. Research relationship between nutrients availability with yellow sap contamination on mangosteen fruits was done in some mangosteen production center areas in the Village Karacak, Barengkok, Garogek, and Pusaka Mulia (West Java), Koto Lua, Baringin, Pakandangan, Padang Laweh, and Lalan (West Sumatera), and Sukarame (Lampung), from December 2009 to July 2011. Research sites at the village level were determined by interviewing traders at district and village levels using purposive sampling technique. At each location of 10 from center production that was selected, determined 10 plants representative to observe, each plant taken 100 fruits sample. Mangosteen fruits were observed for all sites reach 10 thousand pieces (1,000 pieces for each location). Soil samples were taken at the root zone of each tree and analyzed the chemical properties and soil nutrient availability. The results showed that the yellow sap contamination of mangosteen fruits was directly controlled by the availability of Ca and Mn in the soil. The availability of K, P, Mg, Cu, Zn, and B in the soil indirectly affected yellow sap contamination. Calcium played to eliminate and Mn contributed to induces yellow sap contamination, either aryl and the skin of mangosteen fruits. The results of this study can be used as the basis for the study contaminat control yellow sap of the mangosteen fruits.
Penetapan Rekomendasi Pemupukan N, P, dan K Tanaman Duku Berdasarkan Analisis Daun Desi Hernita; Rhoedy Poerwanto; Anas D Susila; S Anwar
Jurnal Hortikultura Vol 22, No 4 (2012): Desember 2012
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v22n4.2012.p376-384

Abstract

Duku mempunyai perakaran yang dalam, sehingga sulit untuk memperoleh sampel tanah yang representatif pada daerah tersebut, sehingga lebih tepat menggunakan analisis daun. Status hara daun merupakan gambaran status hara aktual dalam tanah. Penelitian bertujuan untuk menentukan kategori status hara N, P, dan K, serta rekomendasi pemupukan optimum berdasarkan status hara tersebut pada tanaman duku. Penelitian dilaksanakan di Kecamatan Kumpeh Ulu, Kabupaten Muaro, Jambi pada Bulan Desember 2008 sampai dengan April 2012.  Rancangan penelitian menggunakan acak kelompok dengan lima ulangan.  Perlakuan dosis pupuk N (0, 400, 800, 1.200, dan 1.600 g N) , P (0, 500, 1.000, 1.500, dan 2.000 g P2O5), K (0,600, 1.200, 1.800, dan 2.400 g K2O/tanaman/tahun). Hasil penelitian menunjukkan bahwa status hara N sangat rendah (< 1,81%), rendah (1,81 ≤ N < 2,82%), dan sedang (≥ 2,82%), status hara P sangat rendah (< 0,09%), rendah (0,09 ≤ P < 0,17%), dan sedang (≥ 0,17%), serta status hara K sangat rendah (< 1,16%), rendah (1,16 ≤ K < 2,19%), dan sedang (≥ 2,19%).  Rekomendasi pemupukan pada tanaman duku untuk status hara sangat rendah yaitu 858 g N, 1.770 g P2O5, dan 1.900 g K2O/tanaman/tahun, untuk status hara rendah, 588 g N, 1.335 g P2O5, dan 1.107 g K2O/tanaman/tahun, sedangkan berdasarkan pendekatan multinutrien 920 g N, 1.565 g P2O5, dan 1.488 g K2O/tanaman/tahun (biaya produksi terendah). Rekomendasi pemupukan N, P, dan K berdasarkan analisis daun dapat diterapkan pada pertanaman duku di Indonesia dan meningkatkan produksi serta kualitas buah duku. Duku has been deep roots making it difficult to obtain a representative sample of soil at the root zone, so the more appropriate used of leaf analysis. Leaf nutrient status was picture of the actual nutrient status of the soil. The aimed of this study was to determine leaf N, P, K level category and recommendation study determine the optimum fertilizer rate for each nutrient level category on duku plant. The experiment was conducted at Kumpeh Ulu District, Muaro Jambi Regency, in Jambi Province, from December 2008 to April 2012. Each treatments were arranged in randomized block design with five replications. The treatments were N (0, 400, 800, 1,200, 1,600 g N/plant/year), P (0, 500, 1,000, 1,500, 2,000 g P2O5/plant/year), and K (0, 600, 1,200, 1,800, 2,400 g K2O/plant/year). The results showed that leaf nutrient status of N was very low (< 1.81%),  low (1.81 ≤ N < 2.82%), and medium (≥ 2.82%), status of P was very low (< 0.09%), low (0.09 ≤ P < 0.17%), and medium (≥ 0.17%); status of K was very low (< 1.16%), low (1.16 ≤ K < 2.19%), and medium (≥ 2.19%).  Fertilizer recommendation  rate on duku plant for very low nutrient status were 858 g N, 1,770 g P2O5, and 1,900 g K2O/plant/year, low nutrient status were 588 g N, 1,335 g P2O5, and 1,107 g K2O/plant/year, multinutrient approach were 920 g N, 1,565 g P2O5, dan 1,488 g K2O/plant/year (lower production cost). Recommendation of fertilizer N, P, and K based on leaves analysis can be applied on duku in Indonesia and increase production and fruit quality of duku.
Genetic Polymorphism of SCD1 Gene of Holstein-Friesian Cows in Indonesia Ari Sulistyo Wulandari; HD Rahayu; SD Volkandari; N Herlina; S Anwar; Y Irnidayanti
Jurnal Ilmu Ternak dan Veteriner Vol 24, No 2 (2019): JUNE 2019
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.768 KB) | DOI: 10.14334/jitv.v24i2.1905

Abstract

Stearoyl-Coenzyme A desaturase 1 (SCD1) belongs to the fatty acid family of desaturases. In lactating ruminants, the SCD1 protein is highly expressed in the mammary gland and is relevant for the fatty acid composition of milk and dairy products. Polymorphism of SCD1 gene in Holstein-Friesian (HF) cows could be used as a basis of molecular selection of cattle in order to increase their productivity. The aim of this study was to investigate the polymorphism of SCD1 gene of Holstein-Friesian cows in Indonesia. A total of 162 blood samples of HF cows were collected from four different locations i.e. Bogor, Sukabumi, Tasikmalaya and Enrekang districts. Genotyping of SCD1 gene used PCR-RFLP method with NcoI restriction enzyme. The result showed that three genotypes (AA, AV and VV) and two alleles (A and V) have successfully found and polymorphic. A allele was dominant in all populations (0.63) and in Hardy Weinberg Equilibrium. The highest A allele was found in Sukabumi (0.78) and the lowest was in Bogor (0.55). Heterozigosity observed and expected reached 0.471 and 0.470, respectively. In conclusion, genetic polymorphism was found in all population with dominant of A allele. This finding can be used as a early genetic information of Holstein-Friesian cattle in Indonesia and to build breeding strategy for improving of productivity especially improving of healthy fat milk. 
Co-Authors - Martias . Khalil AAR Hapsari Anas D Susila Anas Dinurrohman Susila Ari Sulistyo Wulandari BDP Soewandi CH Prayitno, CH CI Sutrisno, CI D Pamungkas Desi Hernita Dewi, M A ED Purbajanti, ED F Kusmiyati, F Hartati Hartati HD Rahayu Irawan, A Larasati, P D Mulya, M F Munasik Munasik N Herlina Nurfatima, I Pangestu, A R Hidayati R Poerwanto Rhoedy Poerwanto Rih Laksmi Utpalasari S Widyati, S SD Volkandari Setiawan, AB Y Irnidayanti