Garuda - Garba Rujukan Digital

UJI KETAHANAN KLON KARET IRR SERI 400 TERHADAP BEBERAPA ISOLAT PENYAKIT GUGUR DAUN COLLETOTRICHUM Pasaribu, Syarifah Aini; Rosmayati, Rosmayati; Sumarmadji, Sumarmadji
Jurnal Penelitian Karet JPK : Volume 33, Nomor 2, Tahun 2015
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v33i2.178

Perakitan klondengan produktivitas tinggi, pertumbuhan jagur, resisten terhadap penyakit gugur daun serta memiliki daya adaptabilitas luas adalah tujuan pemulian karet.Klon IRR seri 400 merupakan calon klon unggul seri IRR berikutnya yang memiliki potensi produksi melebihi klon PB 260.Khusus untuk ketahanan penyakit, pendekatan dengan perakitan klon tahan juga telah dilakukan, yaituÂ menyilangkan tetua yang memiliki potensi produksi tinggi dan tahan penyakit.Â Penyakit gugur daun Colletothricum merupakan salah satu penyakit terpenting pada tanaman karet.Penyakit ini disebabkan oleh cendawan Colletothricumgloeosporioides.Gangguan penyakit ini dapat menurunkan produktivitas kebun, tertundanya saat okulasi di pembibitan,dan dalam serangan yang berat mengakibatkan bibit cacat, kerdil bahkan mati. Oleh karena telah dilakukan penelitian di Balai Penelitian Sungei Putih di kebun Entres untuk mengetahui ketahanan 22 klon IRR seri 400 dan klon pembanding PB 260.Parameter yang diamati adalah intensitas serangan dan periode laten, kemudian untuk melihat sifat ketahanan, dicari nilai heretabilitas (h2) dengan membandingakan ragam genetik dan ragam lingkungan terhadap parameter pengamatan. Terseleksi enam klon yang memiliki tingkat ketahanan yang tinggi terhadap intensitas serangan Colletotrichumyaitu IRR 428, IRR 429, IRR 446, IRR 451 dan IRR 452. Tidak adanya interaksi antara isolat dengan klon karena jenis isolat yang digunakan adalah Colletotrhicumgloeosporioides.Tingkat ketahanan dipengaruhi oleh klon yang dicerminkan dari nilai heretabilitas tinggi yaitu >0,5.Â Diterima : 10 Juli 2015; Direvisi : 8 September 2015; Disetujui : 25 September 2015Â How to Cite : Pasaribu, S. A., Rosmayati., & Sumarmadji. (2015). Uji ketahanan klon karet IRR seri 400 terhadap beberapa isolat penyakit gugur daun Colletotrichum. Jurnal Penelitian Karet, 33(2), 131-142. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/178Â

Self-Efficacy dan Konformitas dengan Prokrastinasi Akademik Mahasiswa Rosmayati, Rosmayati; Sunawan, Sunawan; Saraswati, Sinta
Indonesian Journal of Guidance and Counseling: Theory and Application Vol 6 No 4 (2017): Desember 2017
Publisher : Department of Guidance and Counseling, UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penelitian ini bertujuan untuk mengetahui hubungan self-efficacy dan konformitas dengan prokrastinasi akademik mahasiswa Bimbingan dan Konseling Universitas Negeri Semarang baik secara parsial maupun secara bersama-sama. Penelitian ini menggunakan desain kuantitatif korelasional. Sampel yang digunakan berjumlah 125 dari populasi 284 mahasiswa dengan teknik pengambilan sampel simple random  sampling. Adapun teknik analisis data menggunakan regresi. Hasil penelitian menunjukkan bahwa antara self-efficacy dengan prokrastinasi akademik memiliki hubungan yang signifikan (R= 0,565, F(3,121) = 18,903, p = <0,01), kemudian antara konformitas dengan prokrastinasi akademik tidak memiliki hubungan yang signifikan (R= 0,030, F(5,116) = 1,265, p = >0,05). Sedangkan antara self-efficacy dan konformitas dengan prokrastinasi akademik memiliki hubungan yang signifikan (R = 0,595, F(18,903) = 7,957, p = <0,01). Berdasarkan hasil penelitian guru Bimbingan dan Konseling disarankan memberikan layanan BK untuk menurunkan prokrastinasi akademik melalui pengembangan self-efficacy dan konformitas.   This study aims to determine the relationship of self-efficacy and conformity with academic procrastination of students Guidance and Counseling State University of Semarang either partially or jointly. This research uses correlational quantitative design. The sample used is 125 from the population of 284 students with simple random sampling technique. The data analysis technique using regression. The results showed that between self-efficacy and academic procrastination had significant relationship (R = 0,565, F (3,121) = 18,903, p = <0,01), then between conformity with academic procrastination had no significant relationship (R = 0,030 , F (5,116) = 1,265, p = >0,05). While between self-efficacy and conformity with academic procrastination have significant relationship (R = 0,595, F (18,903) = 7,957, p = <0,01). Based om the results of research Guidance and Counseling teachers are advised to provide Guidance and Counseling services to decrease academic procrastination through the development of self-efficacy and conformity.

PERTUMBUHAN DAN PRODUKSI BEBERAPA VARETAS KEDELAI TERHADAP INOKULASI BRADYRHIZOBIUM Milani, Ayu; Rosmayati, Rosmayati; Siregar, Luthfi AM
Jurnal Agroekoteknologi Vol 1, No 2 (2013)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jaet.v1i2.1502

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

Self-Efficacy dan Konformitas dengan Prokrastinasi Akademik Mahasiswa Rosmayati, Rosmayati; Sunawan, Sunawan; Saraswati, Sinta
Indonesian Journal of Guidance and Counseling: Theory and Application Vol 6 No 4 (2017): Desember 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijgc.v6i4.18105

Penelitian ini bertujuan untuk mengetahui hubungan self-efficacy dan konformitas dengan prokrastinasi akademik mahasiswa Bimbingan dan Konseling Universitas Negeri Semarang baik secara parsial maupun secara bersama-sama. Penelitian ini menggunakan desain kuantitatif korelasional. Sampel yang digunakan berjumlah 125 dari populasi 284 mahasiswa dengan teknik pengambilan sampel simple random sampling. Adapun teknik analisis data menggunakan regresi. Hasil penelitian menunjukkan bahwa antara self-efficacy dengan prokrastinasi akademik memiliki hubungan yang signifikan (R= 0,565, F(3,121) = 18,903, p = <0,01), kemudian antara konformitas dengan prokrastinasi akademik tidak memiliki hubungan yang signifikan (R= 0,030, F(5,116) = 1,265, p = >0,05). Sedangkan antara self-efficacy dan konformitas dengan prokrastinasi akademik memiliki hubungan yang signifikan (R = 0,595, F(18,903) = 7,957, p = <0,01). Berdasarkan hasil penelitian guru Bimbingan dan Konseling disarankan memberikan layanan BK untuk menurunkan prokrastinasi akademik melalui pengembangan self-efficacy dan konformitas. This study aims to determine the relationship of self-efficacy and conformity with academic procrastination of students Guidance and Counseling State University of Semarang either partially or jointly. This research uses correlational quantitative design. The sample used is 125 from the population of 284 students with simple random sampling technique. The data analysis technique using regression. The results showed that between self-efficacy and academic procrastination had significant relationship (R = 0,565, F (3,121) = 18,903, p = <0,01), then between conformity with academic procrastination had no significant relationship (R = 0,030 , F (5,116) = 1,265, p = >0,05). While between self-efficacy and conformity with academic procrastination have significant relationship (R = 0,595, F (18,903) = 7,957, p = <0,01). Based om the results of research Guidance and Counseling teachers are advised to provide Guidance and Counseling services to decrease academic procrastination through the development of self-efficacy and conformity.

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: January 2018
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jcrs.v2i1.9550

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

Effectiveness of horizontal and vertical constructed wetlands performance systems with some vegetation on domestic waste concentrations Harahap, Azmi wijayanti; Rosmayati, Rosmayati; Rahmawati, Nini
International Journal of Basic and Applied Science Vol. 12 No. 3 (2023): December: Basic and Applied Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Population growth has resulted in the demand for waste water reclamation increasing rapidly. CW systems are an inexpensive technology with little or no energy requirements and very minimal equipment requirements, resulting in low construction costs. This research will test improving the quality of domestic wastewater using a Vertical Flow Artificial Wetland (VFCW) and Horizontal Flow Artificial Wetland (HFCW) system using kangkong, water hyacinth and lotus vegetation. The results of the research carried out can be concluded as follows: in water spinach vegetation there is no difference in the concentration of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and the vertical CW type. In water hyacinth vegetation there were no differences in the concentrations of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and vertical CW type. In lotus vergetation there were no differences in the concentration of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and vertical CW type. In the research results, there is no significant difference in the horizontal CW and vertical CW types in improving water quality, especially domestic waste, you can use horizontal CW or vertical CW types.

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: January 2018
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jcrs.v2i1.9550

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

Title

Found 7 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 7 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 7 Documents
Search