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All Journal International Journal of Biosciences and Biotechnology Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Proceeding International Conference on Global Resource Conservation Biology, Medicine, & Natural Product Chemistry BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Penelitian Pendidikan IPA (JPPIPA) JMM (Jurnal Masyarakat Mandiri) Ganaya: Jurnal Ilmu Sosial dan Humaniora Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL AGRICA Jurnal Entomologi Indonesia Jurnal Pembelajaran dan Biologi Nukleus Dinasti International Journal of Education Management and Social Science Community Development Journal: Jurnal Pengabdian Masyarakat AGRISAINS: Jurnal Ilmiah Magister Agribisnis Pelita Masyarakat Jurnal Ilmiah Pertanian ( JIPERTA) Jurnal Ilmiah Agribios Journal of Natural Sciences International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Mediagro International Journal of Science and Environment Jurnal Multidisiplin West Science

Retna Astuti Kuswardani

Universitas Medan Area

Author-ID : 303616

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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KEANEKARAGAMAN JENIS MANGROVE DI PANTAI MUTIARA DESA KOTA PARI KECAMATAN PANTAI CERMIN KABUPATEN SERDANG BEDAGAI PROVINSI SUMATERA UTARA sina, Sina; Kuswardani, Retna Astuti; Nasution, Jamilah
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 2, No 1 (2015): Agustus
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

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This Research on the diversity of Mangrove species in Pantai Mutiara Pari Village, Pantai Cermin Subdistrict, Serdang Bedagai Regency, North Sumatera Province was conducted in October s.d November 2012. The objective of this research is to know the diversity of species and mangrove vegetation based on growth level. The research method is explorative survey technique method. The sample collection for the research vegetation data consisted of observation plots with a total of 12 plots derived from 3 transects. The results of the study were 6 species of mangroves: Avicennia marina, Bruguiera sexangula, Rhizophora apiculata, Rhizophora stylosa, Rhizophora mucronata, and Nypa fruticans, belonging to 3 families namely Avicenniaceae, Rhizophoraceae, and Arecaceae. From the analysis, it is known that Avicennia marina, Rhizophora apiculata and Rhizophora stylosa species dominate the coastal area of Pantai Mutiara Desa Kota Pari Pantai Pantai Cermin. Based on the analysis of data obtained, the index of diversity (H ) of mangroves on the beach is low, ie the seedlings H = 0.87, the H1 = 1,34 and the H = 1.20. This indicates that the type of mangrove contained in the beach is small.

Effect of Cropping Systems and Farming Systems to the Diversity of Insects on Potato Field in Karo Highland Sidauruk, Lamria; Bakti, Darma; Kuswardani, Retna Astuti; Hanum, Chairani
Proceeding International Conference on Global Resource Conservation Vol 6, No 1: Proceeding of 6th ICGRC 2015
Publisher : Proceeding International Conference on Global Resource Conservation

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The spesies composition of arthropods on agro-ecosystem can be seen as a general indicator for ecosystem stability and ecological resilience. Agricultural intensification has been linked with losses of biodiversity and disruption of key ecosystem services in farmed landscapes. This study aimed to determine how cropping system and farming systems able to increase the diversity of insects on potato field, that can be used as an integrated pest management strategy. The result showed that insect diversity index and population of natural enemies in polyculture cropping system is higher than monoculture cropping system, while the pest population is lower. Insect diversity index and population of natural enemies in organic farming systems is higher than conventional farming systems, in general the pest population was lower in conventional farming systems, but not significant with organic farming system. The polyculture cropping potatoes+cabbage+mustard+celery, potatoes+cabbage, potato+mustard respectively which grown by organic farming systems provide the highest insect diversity index, the lowest percentage of crop damage, the lowest populations of pest, and the highest natural enemy populations when compared with the same polyculture cropping with conventional farming systems.Â Keywords: Cropping system; farming system; insect diversity; potato

Pendugaan Populasi Penyu Hijau (Chelonia Mydas) di Pulau Jemur Kabupaten Rokan Hilir Riau bidasari, Bidasari; Kuswardani, Retna Astuti; Nasution, Jamilah
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 2, No 2 (2016): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Research on the estimation of green turtle population (Chelonia mydas) was conducted in Jemur Island of Rokan Hilir Regency of Riau Province in May-June 2012. The purpose of this research is to estimate the green turtle population in Jemur Island Rokan Hilir regency, Riau Province. The research method used is the absolute method of absolute sampling that results in the number of population estimates in the form of the number of individuals per unit of sand surface units or habitats observed. The results showed that the number of different individuals as many as 229 nests. The condition of Jemur Island indicates the suitability of location for green turtle habitat to lay and incubate eggs. Physical factors corresponding to the distribution of saraang are said to be productive, ie the average number of nests per day of 8 (eight) nests or 8 (eight) different individuals. Of the 229 nests observed, the depth of the hive ranged from 60cm - 80cm and did not significantly affect the number of eggs placed with the results of correlation (r = 0.43).

UJI RESIDU BEBERAPA BAHAN AKTIF PEPTISIDA TERHADAP PARASITOID TELUR Trichogramma sp. (Hymnoptera : Trichogramatidae) DI LABORATORIUM Irawan, Maya Novita Sari; Kuswardani, Retna Astuti; sartini, Sartini
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 3, No 2 (2017): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

This research aims to study was to determine the effect of various types of active ingredient on mortality Trichogramma sp. In the imago stadia and look for a safe pepticide for Trichogramma sp. In the imago and praimago stadia. Research method using experimental method. Test of pepticide effect on pre-epochal mortality and imago Trichogramma sp. Using the fress method of contact residue. The study was prepared based on Completely Randomized Design with 2 factors and 2 replications. The first factor was the active ingredient of pepticide consisting of 10 treatments namely Lamda Silahotrin 25 gr /L (P1), Dimehipo 400 gr/L (P2), Isoprophilamine Glifosat 480 g/L (P3), Brodifakum 0.005% (P4) , Methyl metsulfuron 20.05% (P5), Triadimefon 200 gr/L (P6), Sipermetrin 50 gr/L (P7), Propiconazole 125 g / L and Tricyclazole 400 gr / L (P8), Cypermethrin 113 g / L ( P9), Annonain (P10). The second factor was the concentration of pesticide (K) consisting of 3 treatments, namely 0.5 ml/L (K1), 1ml / L (K2), 1.5ml/L (K3). The results showed that the provision of various active ingredients of pesticide had a significant effect on egg parasitoid morality Trichogramma sp. On imigo stadia at 12 hours After application, 24 hours After application and 36 hours After application. In praimigo stadia provide a safe pesticide active ingredient on the 12 hours imagion stage After application. The best treatment on P3k3 with an emerge of 79.3%.

Analisis Efektifitas Pengawasan dan Pelayanan Terhadap Produktivitas kerja Tenaga Penyuluh Lapangan (Studi Kasus di Balai Penyuluh Pertanian, Kecamatan Babussalam Kabupaten Aceh Tenggara) Puspita, Diah Eka; Kuswardani, Retna Astuti; Rahman, Abdul
JURNAL AGRICA Vol 4, No 2 (2011): JURNAL AGRICA
Publisher : Universitas Medan Area

In order to develop the resilient agricultural be required the professional agricultural officers, creative , innovative , and trustworthy in the field setting, counseling services and appropriate qualifications and specifications necessary for the development of sustainable agriculture. Productivity is influenced by individual, social work environment, and work conditions factors. Creativity is influenced by encouragement from outside the self, such as control or supervision by the leadership and service provided a relevant agencies. The aims of this study are to analyze (1) the influence of the supervision by the Food Security and Agricultural Counseling (BKPLUH) on the productivity of agricultural instructur, (2) the effect of the service provided by the Food Security and Agricultural Counseling (BKPLUH) on the productivity of agricultural instructur, (3) the influence of supervision and services provided by the Food Security and Agricultural Counseling (BKPLUH) on the productivity of agricultural instructur. The results shows that the positive effect between control and productivity of 0.269 but is very weak at only 0,072 at 5 percent confidence level. There is a positive effect between BKPLUH services on the productivity of 0.583 and strength are approximately 0.383 with a confidence level of 5 percent. There is positive effect of BKPLUH supervision and services on the work productivity for 0.017 and 0.584. Keywords : Agricultural Counseling, Productivity, Supervision

Kajian Pengembangan Kawasan Agrotechnopark di Sumatera Utara Simanullang, Endang Sari; Siregar, Nina Salmaniah; Kuswardani, Retna Astuti
JURNAL AGRICA Vol 6, No 1 (2013): JURNAL AGRICA
Publisher : Universitas Medan Area

The proposes of this research are to find out some criteria of agrotechnopark’s area, as a description of a potential region for the agrotechnopark’s development, agrotechnopark area’s management of development and the development strategy of agrotechnopark area’s in North Sumatera. Some of area is used as a sample for this research are integral animal husbandary and the crop of food’s area in the village of Sei Buluh, Serdang Bedagai Regency, integral animal husbandary and the crop of horticulture’s area in the village of Jarang Uda, Karo Regency, integral fresh water fishery cultivation’s area in the village of Selotong, Langkat Rgency, Yayasan Ekosistem Lestari’s Agrotechnopark area, The village of Timbang Lawan, Langkat Regency. The result of the research showing that the some of integral area is reasonable to develop be a agrotechnopark area based on the criteria of technical, economical and social. the development of agrotechnopark’s region must be looking of physical’s potential, finance and develpment’s program is related with agricultural, animal husbandary and fishery’s sector. The development management of agrotechnopark’s area is needed as a planning (product and infrastructure), process and evaluation. The development strategy of agrotechnopark’s area is analyzed by internal analysis (strength and weakness) inside a current agrotechnopark’s area and external analysis (Opportunity and Threats) outside a current agrotechnopark’s area. This research is recommended that integral animal husbandary and the crop of food’s area in the village of Sei Buluh, Serdang Bedagai Regency is a pilot project to be a agrotechnopark’s area in North Sumatera, arranging a master plan to develop arotechnopark’s area in the village of Sei Buluh, potential, infrastructure and accesibilty of region, A good support, cooperation and coordination from the stakeholders are important factors to support the development of agrotechnopark’s area in North Sumatera. Keyword : agrotechnopark, criteria, region, management, strategy.

ANALISIS PENGARUII CURAH HUJAN, SUIIU UDARA DAN KELEMBABAN UDARA TERHADAP PRODUKSI JAGUNG DI KABUPATEN LANGKAT Ginting, Natal; Kuswardani, Retna Astuti; Azwana, Azwana
JURNAL AGRICA Vol 5, No 2 (2012): JURNAL AGRICA
Publisher : Universitas Medan Area

Corn is a food that referred the most essential after rice in the lives of people in Indonesia. In addition to human consumption, corn is also an ingredient for the production of animal feed that was active when the noodles into agribusiness mover. However, the issue of development of maize production in Indonesia is still importing noodles and outside negeni to meet domestic needs. Factors Natural Resources (SDA) and the weather elements such as precipitation, air temperature and humidity play a role in influencing the level of productivity of maize.The purpose of the study was to determine the extent of precipitation , air temperature and humidity affect the productivity of maize in the district of Langkat. The benefit is as a source of information and economic development of the agricultural sector, to increase farmers' income and GDP corn Langkat through more effective management system den efficiently on natural resources , weather and climate.Rainfall is ideal for corn is between 100-200 mm per month with distnibusi evenly. Growth of corn plants so the response to sunlight and moisture content in the atmosphere . The combination of weather factors between rainfall, air temperature and humidity ideal will lead to increased productivity of maize over the maximum.Sources of data were taken and the Department of Agriculture Langkat , the Central Statistics Agency (BPS) Langkat, Sampali Climatological Station and Office Center for Meteorology and Geophysics Region I Field. Processing methods with the computer program SPSS version 19 using analysis regeresi linear equations, test "F", test "t", the coefficient of determination R2 and significant . The analysis showed that rainfall , air temperature and humidity have a significant effect on the level of productivity of maize in the region Langkat. Keywords : Elements of weather and productivity of corn.

Analisis Efisiensi Pemasaran Cabai Merah di Kabupaten Batubara Nurhidayana, Nurhidayana; Kuswardani, Retna Astuti; Siregar, M. Akbar
JURNAL AGRICA Vol 5, No 1 (2012): JURNAL AGRICA
Publisher : Universitas Medan Area

The red chili commodities is the important contribution in farming, but the nature of this perishable commodity, is seasonal, while consumption occurs throughout the year, it requires a good marketing system. The objectives of this study to get a current red chili marketing system at the Batubara District and analyze the most efficient marketing system and analyze the margin of red chilli marketing at the Batubara District. The methode of study is descriptive quantitative by questionnaire. Respondents consisted of 26 farmers producers, collector of 26, merchant retailers of 18. The result of studies shows that : 1) the marketing channel 3 has the lowest marketing margin of Rp. 4500, 2) smaller marketing margins obtained from the small price difference between farm gate price and the retail price level (consumer price). This shows the marketing channel 3 is more efficient than marketing channels 1, 2 and 4 . However, based to the amount of red chili farmers who choose to use channel 3 is lower than channels 1 and 2 . So operationally channel 3 is not necessarily more efficient because it is only used by 18.57 % of the farmers while channel 1 at 42.85, and channel 2 at 25.71 %. The role of stakeholders to improve the income of farmers through efficient marketing channels is needed. Government efforts are needed to increase their knowledge of processing technologies in the long term so that farmers are able to cultivate chili production in the form of home industry Keywords : efficiency, marketing, chili

Strategi Peningkatan Pendapatan Usahatani Padi Sawah di Kota Tebing Tinggi Saragih, Bahdan; Kuswardani, Retna Astuti; Hasibuan, Syahbudin
AGRISAINS: Jurnal Ilmiah Magister Agribisnis Vol 1, No 2 (2019): AGRISAINS: Jurnal Ilmiah Magister Agribisnis JULI
Publisher : Universitas Medan Area

This study aims to determine the amount of income from lowland rice farming, determine the factors that affect the income of lowland rice farming and determine strategies for increasing the income of lowland rice farming in Tebing Tinggi City. The study was conducted in Tebing Tinggi City, North Sumatra Province which was carried out for 3 months, namely April - June 2017. The research approach was conducted descriptively through case studies. Data collection techniques carried out by observation, interviews, and filling out questionnaires. Data analysis methods used include R / C ratio analysis, regression analysis and Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis. The results showed that lowland rice farming in Tebing Tinggi City was profitable with an R / C ratio of 2.54, the factors of production significantly affected the income of lowland rice farming in Tebing Tinggi City, and strategies in increasing the income of lowland rice farming in Tebing Tinggi City i.e. utilizing farmers' motivation to activate farmers' institutions in managing their farming, utilizing local government support and availability of vacant land to increase land area and access to capital, utilizing farmers' experience and using superior seeds to increase production and utilizing information and marketing technology that is easy to maintain economic value and meet consumer needs

Analisis Usaha Pembibitan Benih Kopi Bersertifikat Varietas Sigarar Utang di Sumatera Utara Lubis, Susilawati; Akoeb, Erwin Nyak; Kardhinata, E. Harso; Kuswardani, Retna Astuti
AGRISAINS: Jurnal Ilmiah Magister Agribisnis Vol 2, No 1 (2020): AGRISAINS: Jurnal Ilmiah Magister Agribisnis JANUARI
Publisher : Universitas Medan Area

The development of coffee plantations carried out by the Government in the future requires a lot of coffee seeds while coffee seed entrepreneurs are very limited. One of the reasons why people/farmers are reluctant to do business in the field of coffee hatchery is the fear of experiencing losses. Therefore this research was conducted which aims to analyze the business in the field of coffee hatchery. Through the interview method, 6 (six) studies were conducted, namely CV. Wana Bhakti, KPT. Sahabat Sejati, UD. Radot, Awaluddin Sitompul, CV. Putra Perkasa and CV.Dharma Nusantara located in North Tapanuli and Pematang Siantar. The results of the business analysis showed that the entire coffee seed producers studied had very large profits as indicated by the net income of 6 coffee producers each of Rp. 429,945,000, Rp. 277,805,000, Rp. 329,845,000, Rp. 288,127,000, Rp. 272,199,000 and Rp. 719,285,000. The results of this study are expected to stimulate the community/farmers to do business in the field of certified coffee hatchery so that it can help the government in providing coffee seeds for the development of coffee plantations in North Sumatra

Co-Authors Abdul Rahman Abidah Ayu Aisar Novita alqindi, muhammad iqbal Aminuyati Ariani Safitri, Sri Azwana Azwana Azwana Azwana B. Sengli J. Damanik Bidasari bidasari bidasari, Bidasari Butar-Butar, Alfons Dwi Putra Chairani Hanum Chairani Hanum Dalimunthe, Arpan Darma Bakti Darma Bakti Dewi Siregar, Fitri Yanni E. Harso Kardhinata Effendi, Ihsan Ellen Lumisar Panggabean Emmy Harso Kardhinata Endang Sari Simanullang Erwin Hasibuan Erwin Nyak Akoeb Erwin Nyak Akoeb, Erwin Nyak Erwin Pane, Erwin Eryanto, Okto Eva Sriana Ferdiansyah, Yudi Firmansyah, Dimas Ginting, Dian Dominika br Ginting, Natal Haliatur Rahma, Haliatur Hanny Hafiar Harahap, Abdul Anas Harahap, Darmadi Erwin Hasanuddin Hasanuddin Hasibuan, Syahbuddin Hernosa, Siswa Panjang HS Siregar, Tumpal Ida Ayu Putu Sri Widnyani Ida Sari Siregar Ika Listiana Indah Apriliya Indri Yanil Vajri Irawan, Maya Novita Sari Lamria Sidauruk Lubis, Susilawati M. Akbar Siregar Magdalena Saragih Maya Novita Sari Irawan Mitra Musika Lubis Muhammad Darwis Muhammad Deaprama Aydra Muhammad Reza Aulia Napitupulu, Beatrix Sofranes Nasution, Jamilah Nasution, Lita Natal Ginting Nina Salmaniah Siregar Noer, Zulhery Nurhidayana Nurhidayana Nurhidayana, Nurhidayana Puspita, Diah Eka Rahmad Fauzi Rahmad Syah, Rahmad Rahmanta Rahmanta, Rahmanta Ramadhana, Muhammad Bobby Saipul Sihotang Saipul Sihotang Saipul Sihotang, Saipul Salqaura, Siti Sabrina Saragih, Bahdan Saragih, Magdalena Sartini Sartini Sarumaha, Agustinus Seca Gandaseca Seri Sekar Sari Setya, Rezki Tri Silvia Nora, Silvia Sina sina Sina sina, Sina Siregar, Agus Saputra Siregar, Awaluddin M Siregar, M. Akbar Siregar, Nina Salmaniah Siti Mardiana Situmorang, Sudiwan Sri Milfayetty Surip Mawardi Suswati Syahbudin Hasibuan, Syahbudin Taufik Siregar Trizelia . Tumpal H.S. Siregar Vajri, Indri Yanil Wijoyo, Hadi Wiwik Handayani Yabani, Yabani Yusniar Lubis Zahari Zen Zul Fadhly Zul Fadhly

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