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PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS KEDELAI (Glycine max L. MERILL.) PADA BERBAGAI KONDISI AIR TANAH

AGROEKOTEKNOLOGI Vol 1, No 1 (2012)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

ABSTRACT Growth and Production of Some Soybean Varieties in Some Groundwater Conditions. The aims of this research was to know the growth and production of some soybean varieties  in some groundwater conditions. The research was conducted at the Faculty of Agriculture, kassa House, University of Sumatera Utara, Medan, on February to May 2012, using a randomized block design with two factors and three replications. The first factor was the groundwater conditions with 4 level consisted of 50%, 60%, 70% and 80% of field capacity, the second factors was soybean varieties consisted of Anjasmoro, Sinabung, and Willis. The results showed that treatment of several varieties significantly effect on root length at harvest, and the dry weight of 100 seeds. Groundwater conditions treatments significantly effect on root length at harvest, root dry weight, shoot dry weight, dry weight seeds / plant. Key words : growth, groundwater conditions, production, soybean, varieties ABSTRAK Pertumbuhan dan Produksi Beberapa Varietas Kedelai (Glycine max L. Merill.) pada Berbagai Kondisi Air Tanah. Tujuan penelitian adalah untuk mengetahui pertumbuhan dan produksi beberapa varietas kedelai pada berbagai kondisi air tanah. Penelitian ini dilaksanakan di Rumah Kasa Fakultas Pertanian Universitas Sumatera Utara, Medan, pada bulan Februari  – Mei 2012, menggunakan Rancangan Acak Kelompok dengan 2 faktor dan 3 ulangan. Faktor pertama yaitu kondisi air tanah dengan 4 taraf yaitu 50%, 60%, 70% dan 80% kapasitas lapang faktor kedua yaitu varietas tanaman kedelai yaitu  Anjasmoro, Sinabung, dan Wilis. Hasil penelitian menunjukkan bahwa perlakuan beberapa varietas kedelai berpengaruh nyata terhadap panjang akar pada saat panen, bobot kering 100 biji. Perlakuan kondisi air tanah berpengaruh nyata terhadap panjang akar pada saat panen, bobot kering akar, bobot kering tajuk, bobot kering biji per tanaman. Kata kunci : kedelai, kondisi air tanah, pertumbuhan, produksi, varietas

UJI EFIKASI HERBISIDA GLIFOSAT TERHADAP PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS JAGUNG PRODUK REKAYASA GENETIKA

AGROEKOTEKNOLOGI Vol 1, No 1 (2012)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

ABSTRACT The study on the efficacy of glyphosate on the growth and yield of genetically modified corn varieties. The study aims to determine the efficacy of glyphosate on the growth and yield two varieties of genetically modified corn. The study was carried out at “Balai Benih Induk”, Tanjung Selamat, Medan from March to June 2012. Four treatments namely stacked genetically modified corn “X” x genetically modified corn “Y” (sprayed with glyphosate), genetically modified corn “X”                         (no glyphosate application, manual weeding), genetically modified corn “Y” (sprayed with glyphosate), hybrid DK979 (no glyphosate application, manual weeding). The result showed that glyphosate did not affect genetically modified corn. Keywords: glyphosate, varieties, corn, tolerant ABSTRAK Uji efikasi herbisida glifosat terhadap pertumbuhan dan produksi beberapa varietas jagung produk rekayasa genetika. Penelitian ini bertujuan untuk mengetahui efikasi herbisida glifosat terhadap pertumbuhan dan produksi dua varietas jagung produk rekayasa genetika. Penelitian dilaksanakan di Balai Benih Induk Tanaman Palawija, Tanjung Selamat, Medan pada bulan Maret sampai dengan Juni 2012. Empat perlakuan yaitu Jagung stacked PRG ”X” x PRG ”Y” (disemprot dengan glifosat), Jagung PRG ”X” (tanpa glifosat, disiang manual), Jagung PRG ”Y” (disemprot dengan glifosat), Jagung hibrida DK979 (tanpa glifosat, disiang manual). Hasil penelitian menunjukkan bahwa herbisida glifosat tidak berpengaruh nyata terhadap keracunan jagung produk rekayasa genetika. Kata kunci: glifosat, varietas, jagung, toleran herbisida.

TANGGAPPERTUMBUHANSTUMP MATA TIDURKARET TERHADAP KOMPOSISI MEDIA TANAM DAN PEMUPUKAN NPK ORGANIK

AGROEKOTEKNOLOGI Vol 1, No 4 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The aim of the research is to know the response of rubber budded stump growth of the compositionsof growing media and organic NPK fertilization. It was conducted at Kuala Bingai Village, Stabat,regency of Langkat about 15 m sea level on May to August 2012 by using arandomized blockdesignfactorialtwofactorsthat is organic NPK fertilization (0, 50, 100, 150 g/polybag) and thecomposition of growing media (subsoil, subsoil+compost of blotong sugar cane andsubsoil+compost of blotong sugar cane+sand). The parameters observed were percentage stump ofshoot, speed of eye stump out, shoot lenght,number of leaves, shoot grith, percentage of stump oneumbrella leaf’s and total leaves width.The result of research showed that compositions of growthmedia and organic NPK fertilization showed no significant effects for all parameters. Interaction ofboth treatments influenced significantly on shoot lenght 8 and 12 MST and shooth grith 6-10 MST.Key words : organic NPK, growing media, rubber budded stump

Effect of indigenous mycorrhizal fungi on organic osmotic adjusment in soybean under salt stress

Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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Abstract

Research about influence of indigenous mycorrhizal fungi on organic osmotic adjustment to salinity stress in soybean has been implemented in saline land in Percut Sei Tuan sub district, Regency of Deli Serdang with EC 4-5 mmhos/cm. This study aimed to determine the effect of indigenous mycorrhizalinoculation on organic osmotic adjusment in different soybean varities. This study used Split Plot Design with two plots. The main plot was soybean varieties consist of non-selected Grobogan variety (salt-sensitive variety) and F5 selected Grobogan variety (salt-tolerant variety). Split plot was mycorrhizal inoculumconsists of 7 types of mycorrhizal inoculum namely without inoculum, Glomus sp-1, Glomus sp-2, Glomus sp-3, Glomus sp-4, Glomus sp-5, and combined of all mycorrhizal inoculum. The parameters observed were leaf proline content, reducing sugar and soluble protein. The results showed that leaf proline content,reducing sugar content and soluble protein were significantly different in soybean varieties, mycorrhizal significantly affected leaf proline content, reducing sugar and soluble protein, while the soybean varieties and mycorrhizal interaction significantly affected soluble protein content in leaves.

RESPONS PERTUMBUHAN STUM MATA TIDUR KARET (Hevea brasiliensis Muell Arg.) DENGAN PEMBERIAN AIR KELAPA DAN PUPUK ORGANIK CAIR

AGROEKOTEKNOLOGI Vol 2, No 1 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

One of the problem encountered in rubber cultivation by rubber budded stump is high deathpercentage of stum in field. The research aim was to obtain useful rubber germ by cococut water soakand liquid organic fertilizer. The research was conduted at Kelurahan Pulo Brayan Bengkel Baru,Kecamatan East Medan (+ 25 meter above sea level) on June to October 2012.Completely randomized design with two factors and three replications. The first factor isthe duration coconut water soak (0, 12, 24 hour) and the second factor is liquid organic fertilizer(0, 20, 40, and 60 cc/plant). Parameters observated were percentage of break bud in field, time of brekbud, height of bud, diameter of bud, amount of leaf, root drived weight, shoot drived weight andpercentage of amount the death of stump at field. The result showed that period of coconut watersoak significantly affect the to percentage of broken bud 2 weeks after plant and the time of brek therubber bedded stump. The liquid organic fertilizer significantly affect to time of break stump, heightof bud, and shoot drived weight. Interaction of coconut water and liquid organic ferlilizer was notsignificantly effect to all paremeters. The best sit of coconut water is 12 hour and dose of liquidorganic fertilizer is 60 cc/plant.Key word : rubber budded stump, coconut water, liquid organic water, growth

RESPONS PERTUMBUHAN DAN PRODUKSI KACANG TANAH TERHADAP PEMBERIAN KOMPOS JERAMI PADI DAN FUNGI MIKORIZA ARBUSKULA

AGROEKOTEKNOLOGI Vol 2, No 1 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growth Response and Yield of Peanut with Straw Compost and Mycorhiza Vesicular ArbuscularApplication. This research aims to study response in growth and yield of peanut for giving strawcompost and mycorhiza vesicular arbuscular. This research conducted on community land locatedat Pasar 1 Street, Tanjung Sari with altitude ± 25 meters above sea level in June until September2012 using Randomized Block Design (RBD) factorial with two factors , which are straw compostdoses (0, 750, 1500, 2250 g per plot) and mycorhiza vesicular arbuscular (0, 10 g micofer perplanting hole). The parameters observed were plant height, number of branches, weight of pods perplot and 100 seeds weight. The results showed that straw compost significantly affected plant height4-12 weeks after planting, and weight of pods per plot. Mycorhiza vesicular arbuscular andinteraction of them not significantly affected on all parameters observed.

EFEKTIVITAS BEBERAPA JENIS FUNGI MIKORIZA ARBUSKULAR TERHADAP PERTUMBUHAN TANAMAN KARET (Hevea brassiliensis Muell. Arg.) DI PEMBIBITAN The effectivity some type Arbuscular Mychorrizal Fungi on rubber (Hevea brassiliensis Muell. Arg.) growth in seedlings

AGROEKOTEKNOLOGI Vol 2, No 2 (2014)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The application of chemical fertilizer is often selected by farmer to increase the rubber growth.However the uses of chemical fertilizer in process of time will bit into land fertility caused the deathof microbe in the ground and the land condition will be solid, it caused root plants can not absorb anutrition. So the application of biological fertilizer like AMF expected to replace chemical fertilizerto increase a rubber growth in continuing time. This research had been conducted in plastic house ofthe Agriculture Faculty, University of North Sumatra (± 25 m asl) from July - September 2013.Method of this research is non factorial randomized block design with 7 treatments, that is the typeof AMF spore (big black AMF spores, small black AMF spores, big yellow AMF spores, smallyellow AMF spores, black indigenous of rubber AMF spores, yellow indigenous of rubber AMFspores, spores of Glomus spp.). Parameters observed were addition of plant height, root volume,weight of dry shoot, weight of dry root and total of spores.The result showed that the addition ofsome type AMF significantly influenced total of spores, but for the other parameters influenced notsignificantly.Keywords : arbuscular mychorrizal fungi, rubber

RESPONS PERTUMBUHAN DAN PRODUKSI KEDELAI HASIL SELEKSI TERHADAP PEMBERIAN ASAM ASKORBAT DAN INOKULASI FUNGI MIKORIZA ARBUSKULAR DI TANAH SALIN

AGROEKOTEKNOLOGI Vol 2, No 3 (2014)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Using of saline land to grow up soybean has constraints such yield decreasing. By using ofsaline tolerant soybean, using ascorbate acid, and inoculation of mychorrizha vesicular arbuscular(MVA) aimed to increasing growth and yield of soybean in saline land.This research was conductedat Kecamatan Percut Sei Tuan Kabupaten Deli Serdang in Februari – Mei 2013, using split split plotdesign with three factors, i.e. variety of saline tolerant soybean (Grobogan no selection andGrobogan F4 selection), giving of ascorbate acid (0 dan 500 ppm) and MVA isolate (MVA type 1,type 2, type 3, type 4 and type 5). Parameter observed were plant height, number of leaves, numberof productive branches, production per plant.The result of the research showed that using of salinetolerant soybean significantly increase all parameters observed. Giving of ascorbate acidsignificantly increase number of productive branches. Inoculation of MVA significantly effect allparameters observed. Interaction between variety of saline tolerant soybean and giving ascorbateacid were not significantly effect all parameters observed. Interaction between variety of salinetolerant soybean and giving of MVA significantly effected number of leaves 5 week after planting(WAP) and production per plant. Interaction between giving of ascorbate acid and MVA were notsignificantly effect all parameters observed. Interaction of three factors were not significantly effectall parameters observed.Keyword : ascorbate acid, michoryza vasicular arbuscular, salinity, soybean

RESPONS PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) TERHADAP PEMBERIAN ABU BOILER DAN PUPUK UREA PADA MEDIA PEMBIBITAN

AGROEKOTEKNOLOGI Vol 2, No 3 (2014)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growing media fertility can be improved or enhanced with inorganic or organic fertilizer, such asboiler ash, which is one type of solid waste by-product of palm oil mills as well as the source ofnitrogen urea fertilizer, is expected to boost growth of cocoa seedling in the nursery. This researchhad been conducted at experimental field of Fakultas Pertanian USU in May 2013 until September2013, using factorial randomized block design with two factor. The first factor was dose of boiler ash(0, 100, 10 g/polybag) and the second factor was dose of urea fertilizer (0, 5, and 10 g/polybag).Parameter observed were plant height, total of leaf area, dry shoot weight and dry root weight.Theresult showed response of boiler ash on cocoa seed significantly increase total of leaf area and dryshoot weight. Urea fertilizer significantly affect dry shoot weight. Interaction of both significantlyaffect dry shoot weight. The best results from interaction boiler ash and urea fertilizer were obtainedin the treatment of boiler ash at 300 g/polybag and urea fertilizer 5 g/polybag.________________________________________________________________________________Keywords: Boiler Ash, Urea Fertilizer, Cocoa Seed

PERAN FUNGI MIKORIZA ARBUSKULA DAN PUPUK ROCK FOSFAT TERHADAP PERTUMBUHAN DAN PRODUKSI KEDELAI (Glycine max (L.) Merrill)

AGROEKOTEKNOLOGI Vol 2, No 3 (2014)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The objective of the research was to study to determine the effect of arbuscular mychorrhizal fungi(AMF). This research conducted at society field Setiabudi, Medan Tuntungan, in May-July2013using factorial randomized block design with two factor. The first factor wasaplication of AMF (0,20, 40, g/plant). The second factor was aplication of rock phosphate fertilizer (0, 50, 100, 150kg/ha). Variable observed consistedinfection degree of AMF,shoot dry weight,root dry weight andweight of dry seeds.The result showed that AMFeffect significantlyinfection degree of AMF, shootdry weight, root dry weight. Dose of rock phosphate fertilizer affect significantly,infection degreeof AMF, and weight of dry seeds. There is not significantly interaction between AMF and rockphosphate fertilizer for all variable observed.Based on the research results of the AMF dose(20g/plant) and rock phosphate fertilizer (150 kg/ha) can increase on soybean growth and production.Keywords: arbuscular mychorrhizal fungi,rock phosphate fertilizer, soybean