Rosmayati Rosmayati
Universitas Sumatera Utara

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Uji Beberapa Varietas Tomat (Lycopersicum esculentum Mill.) terhadap Salinitas Siregar, Luthfi Aziz Mahmud; Rosmayati, Rosmayati; Julita, Julita
Jurnal Ilmu Pertanian KULTIVAR Vol 4, No 2 (2010)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Suatu kajian yang bertujuan untuk mengetahui kemampuan beberapa varietas tomat (Lycopersicum esculentum Mill.) untuk beradaptasi pada lingkungan salinitas tinggi. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial, dengan faktor pertama terdiri dari 3 (tiga) varietas tanaman tomat, yaitu varietas Permata, Monica dan Jelita. Faktor kedua terdiri dari konsentrasi garam NaCl, yaitu 150, 300, 450, 600 dan 750 ppm. Parameter yang diamati adalah tinggi tanaman, jumlah cabang, umur berbunga, jumlah buah per tandan, jumlah  buah per tanaman, produksi per sample, produksi per plot, berat rata-rata buah dan panjang akar. Hasil penelitian menunjukkan bahwa perbedaan varietas berbeda berpengaruh nyata terhadap peubah amatan tinggi tanaman (2, 3, 4, 5 minggu setelah tanam), sedangkan pemberian garam NaCl berpengaruh nyata terhadap peubah amatan tinggi tanaman (4 dan 5 minggu setelah tanam), jumlah buah per tandan, jumlah buah per tanaman, produksi per sampel (g) dan produks per plot (g). Interaksi dari perlakuan varietas dan pemberian garam NaCl berpengaruh tidak nyata terhadap semua peubah amatan yang diamati. Kata kunci: Lycopersicum esculentum Mill., salinitas, varietas.
PERTUMBUHAN DAN PRODUKSI BEBERAPA VARETAS KEDELAI TERHADAP INOKULASI BRADYRHIZOBIUM Milani, Ayu; Rosmayati, Rosmayati; Siregar, Luthfi AM
AGROEKOTEKNOLOGI Vol 1, No 2 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growth and Production of soybean varieties of Bradyrhizobium inoculation. Demand of soybean as a protein source continues to increase, but the increasing of domestic soybean production is still low so it must import from abroad. This is due to the decline in soil fertility and agricultural land conversion to residential. The solution, soybean planting can be done by optimizing the existing land commonly called agricultural intensification. In this research, agricultural intensification is done by adding Bradyrhizobium as biofertilizer. symbiosis between soybean plants with these bacteria can directly fix the nitrogen (N) from the air and can save in the N fertilizer of inorganic form. The objective of the research was to know the responses of the soybean varieties toward Bradyrhizobium inoculation. The split plot design with three replication was used, Bradyrhizobium as main plot and soybean varieties (Anjasmoro, Burangrang, Mitani, Grobogan, Tanggamus, Detam 1, and Detam 2) as sub plot. The result showed that the Bradyrhizobium were not significant affected on all of parameters. The varieties significantly affected on plant height at 5 weeks after planted, flower initiation, the time of harvest, the seed weights per plant, and 100 seeds weight. Interaction between Bradyrhizobium inoculation and soybean varieties were not significant on all of parameters .   Keyword : growth, soybean, inoculation, bradyrhizobium, variety
PERTUMBUHAN DAN PRODUKSI BEBERAPA VARETAS KEDELAI TERHADAP INOKULASI BRADYRHIZOBIUM Milani, Ayu; Rosmayati, Rosmayati; Siregar, Luthfi A. M.
AGROEKOTEKNOLOGI Vol 1, No 2
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growth and Production of soybean varieties of Bradyrhizobium inoculation. Demand of soybean as a protein source continues to increase, but the increasing of domestic soybean production is still low so it must import from abroad. This is due to the decline in soil fertility and agricultural land conversion to residential. The solution, soybean planting can be done by optimizing the existing land commonly called agricultural intensification. In this research, agricultural intensification is done by adding Bradyrhizobium as biofertilizer. symbiosis between soybean plants with these bacteria can directly fix the nitrogen (N) from the air and can save in the N fertilizer of inorganic form. The objective of the research was to know the responses of the soybean varieties toward Bradyrhizobium inoculation. The split plot design with three replication was used, Bradyrhizobium as main plot and soybean varieties (Anjasmoro, Burangrang, Mitani, Grobogan, Tanggamus, Detam 1, and Detam 2) as sub plot. The result showed that the Bradyrhizobium were not significant affected on all of parameters. The varieties significantly affected on plant height at 5 weeks after planted, flower initiation, the time of harvest, the seed weights per plant, and 100 seeds weight. Interaction between Bradyrhizobium inoculation and soybean varieties were not significant on all of parameters .   Keyword : growth, soybean, inoculation, bradyrhizobium, variety
UJI POTENSI PRODUKSI BEBERAPA GALUR /VARIETAS GANDUM (Triticum aestivum L.) DI DATARAN TINGGI KARO Wirawan, Darma; Rosmayati, Rosmayati; P.Putri, Lollie Agustina
AGROEKOTEKNOLOGI Vol 1, No 2
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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The purpose of the research is to obtain strains/varieties of wheat (Triticum aestivum L.) that has high production in Tanah Karo highlands. This research was conducted in the village of Kutagadung, sub district of Berastagi, regency of Karo, North Sumatra Province located at ± 1390 meters altitude above the sea level, from March to June 2012. This research used a randomized block design (RBD) with 10 lines and two varieties of wheat. The experiment results showed that strains/varieties has significant different to plant height, number of productive sapling, length of malai, age of flowering, age of harvest, number of spikelet per plant, number of seed per plant, seed weight per plant, 1000 seed weight and production. The line that has good  production is strain G-21         (1.03 kg/m2) that was not significantly different from H-21, Basribey, LAJ3302/2*MO88, Menemen strain and Dewata variety, and strains/varieties of wheat that has less production is strain HP1744 (0.67 kg/m2) that was not significantly different from OASIS/SKAUZ//4*BCN, G-18, Rabe/2*MO88, Alibey strain and Selayar variety.   Keywords: lines, variety, Triticum aestivum L.
RESPONS PERTUMBUHAN DAN PRODUKSI KEDELAI TERHADAP PEMBERIAN MIKORIZA DAN PENGGUNAAN UKURAN BIJI PADA TANAH SALIN Damanik, Andriany F; Rosmayati, Rosmayati; Hasyim, Hasmawi
AGROEKOTEKNOLOGI Vol 1, No 2
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Respons on growth and yield of soybean by giving mycorrhiza and use of seeds size in saline soil.  Grobogan variety has advantages advantages flourescent, large pods and pod maturity simultaneously. Mycorrhiza is an association between certain fungi with the roots of the plant by forming a complex tangle of interactions. Saline soil is soil containing soluble salts are large enough for the growth of most plants such as hydrochloric or sulfuric. The aim of this research was to know response on growth and yield of soybean by giving mycorrhiza and use of seeds size in saline soil. Research conducted at the field experiment of Tanjung Rejo village Percut Sei Tuan, Deli Serdang on March-August 2012, using a randomized block design factorial with two factors and six replications. The first factor was grobogan variety seeds size, large seeds (13-17 g/100 seeds) and small seeds (8-11g/100 seeds). The second factor was Mycorrhiza (0 and 10 g/plant). The results showed that seed size were significantly different to plant height, number of branches, flower initiation, degree of infection, harvesting age, number of  fill pods per plant and seed production per plant. Mycorrhiza were significantly different to number of branches, degree of infection. Interaction between the seeds size and mycorrhiza did not give significant effect for all parameters.   Keywords: soybean, mycorrhiza, saline soil
PENGARUH SELFING TERHADAP KARAKTER TANAMAN JAGUNG ( Zea mays L.) PADA GENERASI F4 SELFING Lubis, Yunita Armaya; Lollie Agustina P.Putri2, Lollie Agustina P.Putri2 Lollie Agustina P.Putri2; Rosmayati, Rosmayati
AGROEKOTEKNOLOGI Vol 1, No 2
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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The objective of the research was to evaluate variability’s of several characters affected by the variants genotype (σ2g), variants phenotype (σ2p), and studied  heritability and also evaluated the effect selfing of  F4 with it’s parents of corn (Zea mays L.). The experiment was conducted at Setia Budi, Kelurahan Simpang Selayang, Kecamatan Medan Tuntungan, Medan. with altitude ± 25 meters above sea level from April 2012 to July 2012, used Randomized Block Design with one factor and four replication. The result of the research  is genotype have significant effect to characters the curvature of leaf, the age of harvest, the dry kernel per ear, and the rate of seed filling. From progeny test results between F4 to F3 shows the difference in plant height character in genotype VCD, VEF, the affect time of male flowering character in genotype VAB, VBA, VDC, the affect time of female flowering character in all genotype,   the curvature of leaf the character in genotype VBA, VCD, VEF, VFE, the number of leaves above the cob character in genotype VAB, VDC, VFE, the age of harvest character in genotype VAB, VBA, VCD, VDC, VFE, the number of  kernel per ear character in genotype VDC, VEF and VFE, the production dry kernel per plot character in genotype all genotype and the rate of seed filling  character in genotype VAB, VCD, VDC, VEF and VFE. The genotype variability of all characters showed range pressed variability and phenotype variability characters showed range wide and pressed variability, heritability showed range low,medium and high heritability.   Key word : corn, selfing, heritability, variability
RESPONS PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS KEDELAI HITAM (Glycine max L.) BERDASARKAN UKURAN BIJI Esra Lumbantobing, Esra Lumbantobing; Kardhinata, Emmy Harso; Rosmayati, Rosmayati
AGROEKOTEKNOLOGI Vol 1, No 3 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growth Respons and Production of Black Soybean Varieties (Glycine max L.) based on Seed Size.Use of yellow soybeans increases as the limited supply of black soybeans. Farmers to plant turnyellow soybean seed in higher production and larger in size than black soybean seed generally small.Size seed effect toward the utilization of soybean. The large seed size tends to be use as industrial rawmaterials while the size of small seeds use as a seed plant back. The aim of this research is toselection the use big size seed and small seed size from some varieties to increase production. Plantedon Community Land Pasar 1 Tanjung Sari, District Medan Selayang, Medan with a height of ± 25meter above sea level on Mei until August 2012. Randomized Block Design from that is varieties(Detam-1, Detam-2, Cikuray, and Mallika) and seed size (small seed size and big seed size) who thetreatment repeatedly 3 times. The parameters observased were plant height, number of branches onmain branches, flowering time, harvest time, number of pods per plant, number of pods containing,number of empty pods, production per plant, number of small size seed per plant, number of mediumsize seed per plant, and number of big size seed per plant. The research showed that the stastisticanalysis that varieties significant effects on plant height, number of branches on main branches,flowering time, harvest time, number of pods per plant, number of pods containing, number of smallsize seed per plant, number of medium size seed per plant, and number of big size seed per plant.
SELEKSI GALUR KEDELAI (Glycine max (L.) Aminah, Siti; Rosmayati, Rosmayati; Siregar, Luthfi A Mahmud
AGROEKOTEKNOLOGI Vol 1, No 3 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Strain Selection of Soybean ( Glycine max (L) Merril) of F3 Generation on Saline Soil. Salinity isone of the most serious and widespread agricultural problems resulting in losses of yield. Generally,as land is more intensively cultivated, the salinity problem becomes more severe. A highconcentration of NaCl greatly reduces growth of both the shoot and the root. One strategy availableto cope with saline soil is to choose salt-tolerance crops or to select salt-tolerance cultivars within acrop. This research aims to select the soybean that can grow and has a higher production on salinesoil of F3 generation. This research was conducted in the experiment area at Desa Tanjung Rejo,subdistrict of Percut Sei Tuan, Regenecy of Deli Serdang in the elevation of 1.5 m on above sealevel since Apryl 2012 up to Juny 2012. The experiment design applied in this research is a crosssection analysis that consist of 1 variety, and the applied methot is a F3 generation pedigreeselection, the population is sample, the number of live plant is 137 of 2118. The selected plant isbased on the grain production per plant for 39 plants. Based on the results of research indicates thatbased on the highest weight of seed per plant is 4.9 g on the plant number 1305.2.20 and the lowestproduction is 0.2 g on the plant number 88.5.10 and 88.5.11. The component of production that hasa direct influence to the grain production per plant is the number of branch, age of flowering,number of pod and number of pods contain. Component of production that giving the highest directinfluence is the number of pod contain for 0.832.Keywords : species, soybean, selection, saline soil.
PENGUJIAN RESPONS PERTUMBUHAN BEBERAPA VARIETAS PADI SAWAH (Oryza sativa L.) AKIBAT CEKAMAN SALINITAS Hutajulu, Herti Folarida; Rosmayati, Rosmayati; Ilyas, Syafruddin
AGROEKOTEKNOLOGI Vol 1, No 4 (2013)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Growth Response Testing of Several Rice Varieties (Oryza sativa L.) Caused of Salinity. In theSub-District Percut Sei Tuan there are around 700 hectares more area paddy fields that can becategorized as has been affected by sea water (is 1-2 km to coast). The production rice fields in thearea was around 2-3 tons per hectare with using varieties Ciherang and Mekongga. But varietiesCiherang have potential result8.5 tonnes/ha with result average 6.0 tonnes/ha in the non- salinity.The problem is to be a basic idea how to increase production the be examined back some varietiesthat had been found varieties that not only could but critical market result in standard national resultrice that is 6.0 ton/ha.This study aims to determine the growth response of some rice varieties due tosalinity stress. The study was conducted in the Village of Tanjung Rejo, Hamlet Paluh Merbau, Sub-District Percut Sei Tuan, Deli Serdang Regency with altitude of 1.5 meters above sea level in April-September 2012 using a Randomized Block Design with eight varieties of rice plant (Ciherang, IR64 , Lambur, Batanghari, Banyuasin, IR 42, Inpari 10 and Margasari) with 3 replication. Parameter isobserved germination, salt injury, plant height, number of tillers, leaf chlorophyll, leaf area, numberof productive tillers, panicle length, number of grains contains per panicle, number of grains perpanicle empty, grain weight per plot, and 1000 grain weight. The results showed that Ciherangvarieties and Banyuasin is highly tolerant to salinity. Banyuasin and Batanghari production per plothad the highest and lowest are IR 64 varieties and Inpari 10 varieties.Keywords: salinity, varieties, paddy.
Studi Biologi Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) di Laboratorium Bakti, Darma; Rosmayati, Rosmayati; Sufryiadi, Sufryiadi
Jurnal Agrista Vol 13, No 1 (2009): Volume 13 Nomor 1 April 2009
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Biological Study of Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) in LaboratoryABSTRACT. Pleisispa reichi is a mein pest of coconut in Indonesia. This beetle attacked the young leaves. The objective of this research id to know the biological aspect of this beetle on coconut leaves. This studies were conducted in Laboratory of plant pest and disease, Faculty of Agriculture, North Sumatera level. The result showed that female produced 43.40±9.86 eggs with hatching 80.77±6.95%. Larvae had 3 instars with duration 22.80±0.79 days. The age of pupae 5.30±0.71 days. While the age of female and male, 70.90±4.55 and 73.90±4.55 days, respectively. Copulation occurred when imagoes age 13-14 days. The length and wide size of eggs were 5.90±0.56 and 1.95±0.20 mm. The length larvae of instar 1, 2, and 3 were 4.05±0.37, 6.00±0.53, and 9.05±0.55 mm. While the width were 0.95±0.16, 1.35±0.24, and 1.85±0.24 mm. The measure of length and width of pupa were 8.75±0.49 and 1.80±0.26 mm. While the length and width size of male was 8.35±0.58 mm and 1.90±0.21 mm and the female was 9.75±0.54 mm and 2.20±0.26 mm. In life table showed that the net of reproduction rate (Ro) = 11.02. While the intrincic rate of reproduction (r) was 0.070 and Tc was 34.30. It means that the beetle had survival rate was 34.30%.