bluuebunny/crossref_metadata_2025 huggingface dataset:
Influencia de las organizaciones escolares en la acción evaluativa del profesorado
Authors: Bustamante-Castaño Sirley Andrea , Chaverra-Fernández Beatriz Elena
Published: December 2019

Comprender cómo actúa el profesorado alrededor de la evaluación en su cotidianidad escolar, precisa reconocer que sus acciones y pensamientos están permeados por el contexto en que se desenvuelven. Cada estructura del sistema educativo ejerce una influencia en el profesorado, que lo lleva a desarrollar sus acciones evaluativas de determinada manera. El objetivo de este estudio fue comprender cómo las directrices de las Instituciones Educativas (IE) influyen en la acción evaluativa de un grupo de profesores de Educación Física de Medellín (Colombia), durante una unidad didáctica. El método empleado fue cualitativo, específicamente el estudio de caso múltiple. Como estrategias de recolección de información se utilizaron: entrevistas semi-estructuradas, observación participante y análisis documental. Entre los resultados se encontró que el Sistema Institucional de Evaluación de Estudiantes (SIEE) de cinco colegios, determinó la acción evaluativa de los docentes en tres aspectos. Primero: los actores participantes, en este proceso la autoevaluación tiene un porcentaje definido en cuatro SIEE, sin embargo, sólo dos de ellos tienen criterios establecidos. Segundo: la aplicación de instrumentos y procedimientos. La directriz de todos los SIEE fue realizar un examen teórico; con un porcentaje de la calificación final. Tercero: los momentos. Los procedimientos anteriores (autoevaluación y examen) debían realizarse al final de la unidad didáctica. Solo para un docente de los seis indagados, el SIEE no influyó en su acción evaluativa. En conclusión, la organización escolar influye de forma determinante en la acción evaluativa y el profesorado asume una postura de acatamiento de la norma.
Telling stories between fairy tales and Storytelling: a concept of valuing, understanding, and enjoying learning through a model of telling stories in the context of the Qur'an
Authors: Tamam Mohammad Badru
Published: December 2019

Fairy tale in the sense of fiction / fiction telling stories, such as: fable, sage, saga, legend, mythe, ephos. Telling stories are interpreted as narrations about events. Fairy tale delivered continuously will be boring, over time the audience is not enthusiastic about listening. Telling stories in fairy talekan differ in taste if they are equipped with movements that reflect the roles and character of characters who are refined talekan, in this case termed storytelling. The purpose of this article is to examine the concepts of fairy tale, telling stories and storytelling and the Qur'an about respecting, understanding, and enjoying learning through this model of telling stories. The conclusions of this article are: 1) Telling stories do not use improvisation, fairy tale improvisation in several parts, Storytelling uses the totality of improvisation; 2) Mastering the technique of menfairy tale, telling stories & storytelling well, educators have the opportunity to explore the potential intelligence, emotional and spiritual intelligence; 3) The Qur'an alludes to, but does not teach fairy tale, not even fable perspectives, but teaches stories and parables which in this context are amtsaal.
浅析安徽段淮河河道采砂执法管理
Authors: 王 学飞
Published: December 2019

淮河是中国东部主要的河流之一,为中国的第六大河,是一条具有悠久历史的古老大河。她源于豫,经皖,达苏,全长1000公里,总落差196米。淮河的安澜与否直接影响着经济、社会和生态的可持续发展,近些年淮河段非法采砂现象严重影响淮河河势稳定、防洪及通航安全。本文主要针对安徽段淮河采砂管理中存在的问题,并提出解决对策,供同仁们共同探讨。
瞬变电磁法在高压线附近的采空区勘查中的应用
Authors: 赵 会杰 , 何 振玲
Published: December 2019

本文通过对瞬变电磁法大线框与小线框工作装置采集数据试验,分析了二种装置受高压线干扰程度的差别,对存在高压线等线性干扰的工区内采用大、小线框工作装置相结合的方法有效性进行了试探性研究。
浅谈公路沥青路面施工技术控制
Authors: 陈 文康
Published: December 2019

众数周知,沥青路面是公路工程的重要组成部分,其施工质量,不仅会对整个公路工程的质量造成影响,同时还会影响到车辆行驶的安全性以及舒适性。而想要对沥青路面的施工质量加以保证,除了要对各种施工技术进行科学的应用以外,还要将质量控制工作做好,而这也是公路建设领域实现可持续发展的重要途径,因此,本文针对公路工程沥青路面施工技术及质量控制进行讨论,希望能够为相关工作的开展提供参考和借鉴。
公路路面沥青施工质量控制技术分析
Authors: 姚 远
Published: December 2019

随着经济建设的发展,我国基础设施建设力度不断增强,使得公路工程覆盖范围越来越大,有效提升了我国的交通运输能力,但公路工程的效益发挥往往会受到路面施工质量的影响,如果不能对公路的沥青路面施工质量进行有效的控制,将会对整个工程的质量造成不利影响,所以,本文针对公路路面沥青施工质量控制技术进行讨论,对应用该项技术的意义加以了解,并对该项技术的具体应用进行探讨和描述,希望能够有效提升公路路面的施工质量。
信息通信工程中传输技术的应用研究
Authors: 潘 燕儿
Published: December 2019

在科技时代背景下,信息技术逐步拓展应用到通信工程中,并取得了良好的成效。通信工程的重点是通信信号的传输,为此,将传输技术应用到信息通信工程中具有重要意义。为此,本文简要介绍了国内传输技术的发展现状,以及传输技术在信息通信工程中的应用情况,预测了传输技术的未来发展趋势,以供借鉴。
基于实例的建筑消防给排水施工设计研究
Authors: 王 园
Published: December 2019

如今,我国人口数量逐年递增,为解决住房问题,高层建筑应运而生。高层建筑消防给排水设计是保障高层建筑质量安全,维护公众生命财产安全的重要手段。为此,本文结合高层建筑实例,介绍了消防给排水工程设计与施工的重点内容与注意事项,以供参考。
公路工程路基路面设计优化及要点解析
Authors: 林 亮
Published: December 2019

为了节约公路建设成本,减少道路交通事故的发生,使人民生命安全有所保障,国家经济可持续发展,必须在公路路基路面设计时加强研究分析,找出切实可行的策略和方法。本文对公路工程路基路面设计优化及要点进行了研究分析,以供参考。
建筑施工过程中深基坑支护施工的技术要点
Authors: 代 巴吐 , 徐 贺
Published: December 2019

随着我国经济的稳定发展,综合国力的提高,我国加大了对各项建筑的发展。在建筑工程中,深基坑支护技术是至关重要的一个技术环节,所以,在进行施工的过程中,要根据具体的施工情况,选取科学合理的深基坑支护技术,确保支护设计技术没有任何问题,这样,才可以为整个建筑工程打下一个良好的基础,才能确保整体工程的质量,为我国的建筑工程健康持续发展提供技术的保证,提高我国的建筑工程能力以及在市场中的竞争力。
村镇建设中农村污水处理设施的选择
Authors: 赵 海花
Published: December 2019

若想改善村镇建设质量,保护村镇生态环境,就需要加大污水处理力度,提高有机废气的处理效率,降低有害物质的排放。本文将针对村镇建设中农村污水处理设施的选择进行分析阐述,希望对解决村镇污染问题有所帮助。
探究新时期土木工程管理的常见问题及优化研究分析
Authors: 韩 辉辉
Published: December 2019

随着经济和各行各业的快速发展,在城市发展的进程中,城市建设是城市发展的过程之一。土木工程管理与土木工程的各个方面都有着密切的联系,是要形成一个好的建筑所必须具备的。我们要在实际的工作中不断地提高土木工程管理水平,以此保证土木工程施工质量,降低施工工程成本,提高施工进度,为相关的建筑企业赢得更多的经济以及社会效益。如何在这种大环境下,做好土木工程的管理工作,是当前情况下,主要应该解决的问题。
机械设计及自动化设计研究
Authors: 董 新新
Published: December 2019

随着社会经济和科学技术的发展,促进机械设备自动化体系的进一步完善和优化,并对设备调试工作提出新的要求。受行业发展要求,为了提高机械设备的运行效率,代替人工操作,保证操作精准性,机械设备的智能化和自动化备受关注,并运用现代化技术,借助计算机实现机械设备的自动化操作,根据预先设定的指令信息,使得机械设备进行译码执行,进而完成操作工序。有鉴于此,本文对机械设计及其自动化设计进行了探讨。
论在房屋施工中工程测量要点以及注意事项探讨
Authors: 李 疆
Published: December 2019

随着社会的不断发展,房建施工项目不断寻求新的突破,因此对工程测量工作的要求越来越严格。因此,在进行工程测量时要充分保证测量数据结果的准确性,不断适应住房建项目开发时间的高标准,控制住房建工程测量工作的要点以实现工程测量的重点。以房建项目工程测量工作要点的控制从而使房建项目的施工质量获得保障。
桥梁设计的现状与改善策略的探讨
Authors: 陈 亮
Published: December 2019

在国民经济一体化发展的环境下,科学技术的不断借鉴、发展,不断地进步、完善已经渗透于各个领域。在现代化经济建设的带动下,道路桥梁工程作为建设、经济发展的重要部分,无论在设计环节,还是在施工过程中,都面临工期长、任务重、要求高等重任。然而,我国道路桥梁建设起步较晚,设计过程受传统思想、理念等的影响,在桥梁稳固、安全、长久的问题上还有待进一步的完善。道路桥梁在建设使用中,除了内部因素,还存在外部因素的影响,如：车辆超载、风化等,随着岁月的推移,桥梁材料也在逐步退化,造成桥梁结构的损坏现象时有发生,所以,道路桥梁的设计关乎整个桥梁的安全性、耐久性。本文主要探讨的是道路桥梁设计的现状与改善的策略以及进一步的探讨和分析。
现代建筑项目工程建设的钻孔灌注桩施工技术分析
Authors: 陈 晨
Published: December 2019

钻孔灌注桩施工技术使用相关方法在地基土里面构建桩孔,并且放在钢筋笼中,之后再运用混凝土进行灌注,最后得到一种桩,因而为了发挥它的作用,本对现代建筑项目工程建设的钻孔灌注桩施工技术和其他注意事项进行了探讨分析。
道路桥梁工程伸缩缝施工质量技术的控制策略研究
Authors: 王 慧敏
Published: December 2019

设置伸缩缝可以有效调节运输车辆重力荷载与施工材料自然属性之间的差异,保证整体道路桥梁工程的运行质量。通常情况下,伸缩缝施工质量很大程度的直接决定了整体路桥工程的质量。为此,全面探究道路桥梁工程中伸缩缝施工质量的控制策略具有实际意义。
绿色建筑工程的造价预算及其成本控制分析
Authors: 关 振宇
Published: December 2019

绿色建筑是指在建筑全寿命周期中充分实现环保、节能的建筑。绿色建筑工程合理的造价预算及其成本控制有利于降低工程开销,提高建筑质量,实现人与自然的和谐共处。随着经社会济的进步发展以及市场经济的日趋完善,人们越来越关注建筑工程成本控制和造价预算,绿色建筑工程合理的造价预算及成本控制可以有效提高社会效益与经济效益,对节能环保有一定的推动作用。基于此,本文概述了绿色建筑,阐述了绿色建筑工程造价预算与成本控制的特点,对绿色建筑工程造价的预算要点及其成本控制措施进行了探讨分析。
房屋建筑混凝土施工技术关键点研究
Authors: 钟 应成
Published: December 2019

混凝土施工技术不仅能够提高施工的质量和效率,还给未来的建筑行业指明了新的发展方向。但是在实际的应用中还是存在一定的问题,给房屋建筑施工带来不便。文中会简单混凝土施工技术中存在的问题,简述混凝土施工材料的质量要求,最后重点分析施工技术的实际应用。
影响工程造价的主要因素与控制方法
Authors: 何 林飞
Published: December 2019

如今,我国建筑工程行业取得了前所未有的进步。建筑工程施工中需要投入较多的资金,施工时间较长,且工程施工流程也较为复杂,因此分析工程造价影响因素及控制方法具有重要意义。
建筑工程施工质量管理探究
Authors: 尹 相刚
Published: December 2019

近年来,我国建筑业发展迅速,工程质量关系到建筑物的耐久性和安全性,日益受到人们的重视。工程施工质量管理的本质是在保证工程质量的同时,通过科学合理的管理模式节约施工企业的成本,使施工企业既能获得社会效益,又能获得经济效益。
刍议环保节能技术在建筑装饰装修中的应用
Authors: 徐 勤固
Published: December 2019

对建筑进行装饰和装修,需要同时使用大量的机械设备、装饰材料以及人工,并且还要求不同的工序和不同的工种间进行紧密合作。随着自然资源和自然能源的逐渐紧缺,人们不断地提高对居住环境的要求,因此,应加大对节能环保技术的研究,减少不必要的资源浪费,从而提高人们的居住环境,促进建筑装修行业的发展。
浅谈工民建筑施工的节能措施
Authors: 艾 忠红
Published: December 2019

工民建筑业的发展为改善人们生存环境提供了物质保障,但是过去对能源过度消耗的建筑增加了生态环境的污染。而工民建筑施工中的节能可以有效将建筑物与能源和环保结合起来,不仅保证了工民建筑使用功能,而且使空间结构有效保证了环境保护的具体要求。本文阐述了工民建筑施工中的节能特征及其必要性,对工民建筑施工中的节能措施进行了论述分析。
机电设备安装工程的质量通病及控制
Authors: 王 军
Published: December 2019

当前,机电设备不仅要提高设备本身的性能,还要采取更加科学的安装施工方式,确保机电工程在运行效率、使用安全等方面获得突破。而本文就针对机电安装工程的质量问题及针对性对策进行了简要分析。
关于加强环保监察工作能力建设的若干思考
Authors: 吕 晓锋
Published: December 2019

基于当今经济环境背景下,人们的各项生活水平也不断提升,我国的环境污染问题逐渐凸显出来,相关部门大力的倡导环境保护,加强监察力度,避免环境污染问题发生。但就实际情况进行分析,还有许多地区的执行力度不足,影响生态环境的建设。本文从环保监察工作建设中存在的不足之处展开分析,并以此为依据,提出健全政府环境保护考评机制、明确考核指标、完善环保监察立法、完善绩效激励机制等几个方面的措施,希望能不断提高环境保护的监察能力,为环保事业做出巨大的贡献。
探讨环境科学与生命科学的关系
Authors: 杨 昆榆
Published: December 2019

环境科学与生命科学是当下进行科学研究的两大方向,在研究过程中我们发现,环境科学与生命科学的研究内容规律等等具有相互影响,相互作用的联系。本文对于环境科学与生命科学的概念、意义及当下发展状况进行阐述,并对于二者相互的关系进行分析,进一步提出保护环境与探究生命的各项举措。
建筑垃圾再生微粉在砂浆中的应用分析
Authors: 张 丽丽
Published: December 2019

随着我国建筑业的快速发展,每年产生的建筑垃圾日益增多。因此,建筑垃圾的再生利用成为人们重视的问题。然而在对建筑垃圾进行重新利用的过程中,会产生大量的细小微粒,我们通常把粒径小于0.16mm的细小微粒称为再生微粉。再生微粉的量很大,容易散落在空气中,对大气环境造成很大的影响,更会对人体健康有很大的不利。目前,对建筑垃圾的利用主要是再生骨料方面,对再生微粉的研究少之又少。本文对再生微粉在砂浆中的应用进行分析。
The Relationship Between Adma and Anthropometric, Glucose, Lipid, and Inflammatory Parameters in Obese
Authors: Dharma Lindarto  , Brama Ihsan Sazli
Published: December 2019

Asymmetric dimethylarginine (ADMA) is an endogenous inhibitor of nitric oxideproduction and involved in various pathological processes, especially processes involvingcardiovascular risk. The purpose of this study was to analyze the correlation betweenADMA and anthropometric, glucose, lipid, and inflammatory parameters. The study wasanalyzed by a cross-sectional study of 45 obese subjects at H. Adam Malik Hospital. Bloodtests were carried out after 8-10 hours of fasting against cardiovascular risk: anthropometry(body weight, BMI, and WC), glucose (FPS, PPS, HbA1C, Fasting Insulin, and HOMA-IR), lipid (LDL-C, HDL-C, TG, and sd-LDL), and inflammation (ApoB and hs-CRP)parameters. The results showed of the 45 subjects, the average age was 41.69 ± 5.69 yearsold, and the average BMI was 33.09 ± 5.05 (Obesity I). ADMA was also found to becorrelated significantly with FPG, HBA1c, and TG parameters [r=-0.506, p=0.001; r=-0.334, p=0.013, dan r = -0.315. p=0.017, respectively]. In obesity, ADMA correlatedsignificantly with cardiovascular risk parameters: FPG, HbA1C, and TG.
KERAGAAN GENERASI KETIGA (M3) KEDELAI HASIL IRADIASI SINAR GAMMA PADA KONDISI OPTIMUM DAN KONDISI CEKAMAN KEKERINGAN
Authors: Hanafiah Diana Sofia
Published: December 2019

The objective of this research was to obtain a genotype of selected putative mutant withgood agronomic traits and high yielding on the optimum condition and its adaptability todrought stress in M3 generation. The study result showed that there were differences in thegrowth and production of each population as a result of irradiation in optimum conditions anddrought stress conditions. The population as a result of irradiation at 150 Gy and 200 Gy had a highermean value for the plant height trait, the number of productive branches, the number of productivenodes and the number of productive pods compared to irradiation population of 50 Gy, 100 Gy andthe control population of Argomulyo at optimum conditions. The decrease in the growth anddevelopment happened to all the characters observed in the irradiation population in droughtconditions compared to when grown in optimum conditions. The decrease can be seen in thecharacters of plant height, the number of pods and seed weight per plant. The growth and developmentof the population irradiation of 150 Gy and 200 Gy were more influenced by drought conditionscompared to other irradiation populations. The selection in the optimum conditions produced 291high yielding genotypes and the selection in drought conditions generated 202 genotypes andadapted to drought environments.
PENGKAJIAN UJI ADAPTASI VARIETAS PADI UNGGUL BARU DI KABUPATEN TAPANULI SELATAN SUMATERA UTARA
Authors: Napitupulu Delima
Published: December 2019

Study of six high yielding varieties of rice adaptation performed on wetland rice fields in the North of Sumatera.The activities focus on location in Pintu Padang I village. The objective is to implement mentoring activities rice technology through the test and open-field VUB adaptation to increase rice production. The team have been mentoring technology of SL-PTT-Rice in West Tapanuli Regency, as has been done in 2013. Mentoring of the application of technological innovation with approaches Integrated Crop Management (PTT). The test of adaptation to six varieties (Inpari 3, Inpari 10, Inpari 14, Inpari 15, Inpari 16 dan Mekongga). Through this activity, carried rice varieties test an acre in one location. The technologies presented are: new varieties, cropping patterns legowo 4:1, fertilizing, pest control, etc.. The test of adaptation to six varieties, the highest result was Mekongga (8,2 t/ha), Inpari 14 (8,1 t/ha) and Inpari 15 (8,1 t/ha)., so these varieties is very potential to be developed of the farmer and stakeholders.
PENAMPILAN BEBERAPA KARAKTER MORFOFISIOLOGI GALUR INTRODUKSI JAGUNG (Zea mays L.) YANG DISELEKSI PADA LINGKUNGAN TANAH MASAM
Authors: Lubis Khairunnisa , Sutjahjo Surjono Hadi , Syukur Muhamad , Trikoesoemaningtyas
Published: December 2019

The objective of this research was to obtain morpho-physiological characters performances maize inbreed on acid soil condition. The experiment was conducted in a Nested Design with three replications. The first factor was environment, the second factor was 16 inbreds of maize. The experiment was conducted at two environments : acid soil with criteria of Al-dd 0.2 me.100 g-1 and acid soil with criteria of Al-dd 1.87 me.100 g-1. The results showed that tolerant maize inbreed on acid soil condition had small Anthesis Silk Interval and …faster
EFEKTIVITAS PEMBERIAN BEBERAPA JENIS BAHAN ORGANIK TANDAN KOSONG KELAPA SAWIT DAN MIKORIZA PADA TANAMAN KARET DI TANAH CEKAMAN KEKERINGAN
Authors: Lumbantoruan Santa Maria , Sahar Asmarlaily , Elfiati Deni , Sitohang Chadra
Published: December 2019

Penelitian ini bertujuan untuk mengetahui respon pemberian Bahan Organik TKKS dan Mikoriza terhadap pertumbuhan stum karet berpayung dua ditanah cekaman kekeringan pada kadar 60 %. Penelitian ini dilaksanakan di rumah kasa Fakultas Pertanian USU (± 25 m dpl) pada bulan November 2014 – Mei 2015 menggunakan Rancangan Acak Lengkap Faktorial (RAL) dengan dua faktor. Fakktor pertama yaitu dosis Bahan Organik Tandan Kosong Kelapa Sawit (TKKS) dengan 4 taraf yaitu 0 g/polybag, 300 g/polybag, 600 g/polybag, 900 g/polybag; dan faktor kedua yaitu jenis Mikoriza dengan 4 taraf yaitu tanpa mikoriza, Glomus, Acaulospora, Glomus+Acaulospora. Hasil penelitian menunjukkan bahawa aplikasi bahan organik TKKS memiliki pengaruh yang nyata terhadap tinggi tanaman dan cenderung nyata pada diameter batang. Dimana taraf terbaiknya diperoleh pada dosis 600 g/polybag. Pemberian Mikoriza tidak berpengaruh nyata namun dapat meningkatakan rata-rata tinggi tanaman dan diameter batang. Jenis mikoriza yang terbaik diperoleh pada jenis mikoriza yang digabung yaitu Glomus + Acaulospora. interaksi antara bahan organik TKKS dan Mikoriza tidak berpengaruh nyata namun dapat meningkatkan rata-rata tinggi tanaman dan diameter batang. Taraf kombinasi yang terbaik terdapat pada Bahan Organik TKKS 300 g/polybag dan Mikoriza Glomus + Acaulospora.
KEANEKARAGAMAN DAN KONSERVASI STATUS CAPUNG DI KAMPUS HIJAU UNVERSITAS SUMATERA UTARA, MEDAN-INDONESIA
Authors: Siregar Ameilia Zuliyanti
Published: December 2019

Capung merupakan kelompok serangga terbesar dan sebagai predator pada siklus rantai makanan di perairan. Sebanyak sembilan stasiun ditentukan secara acak sebagai lokasi penelitian disekitar kampus USU yang dilakukan selama sebulan (4 November 2013 hingga 28 November 2013). Kemudian Capung dikumpulkan menggunakan sweep net (400 μm mesh, 60cm x 90cm) dengan enam kali ayunan dimulai jam 0900 hingga jam 1200 siang, capung dikumpulkan dan diidentifikasi menggunakan buku identifikasi capung. Sebanyak 2 sub ordo, 4 famili, 26 genus, 31 species dan 432 individu capung teridentifikasi. Jenis Orthetrum sabina, Pantala flavescens dan Agriocnemis femina merupakan jenis-jenis capung dominan, sedangkan jenis Vestalis/Arethystira amoena dan Aethriamanta gracilis hanya ditemukan di stasiun 3 dan 6. Sebesar 62% famili Libellulidae mendominasi, diikuti famili Coenagrionidae (31%), Gomphidae (6%) dan terkecil sebanyak 1% dicatat dari famili Calopterygidae. Perhitungan nilai indeks dilakukan, meliputi diversitas Shannon, eveness dan indeks Jaccard bervariasi (H’=2.35-3.48, E=0.60-0.79, CJ=0.30-1.00). Berdasarkan status konservasi, dihitung persentase kehadiran capung yang terbagi atas empat kelompok, yaitu spesies yang jarang (5.45%), spesies ada (55.74%), spesies banyak (23.68%) dan spesies sangat banyak (15.13%). Penelitian ini menunjukkan peran capung sebagai bioindikator dan predator di lahan pertanian. Secara ekologi, kampus hijau USU diindikasikan memiliki lingkungan berkategori sangat baik dalam pertumbuhan populasi capung dalam ekosistem lingkungan.
PENGARUH KOMPOSISI MEDIA TANAM DAN APLIKASI Azotobacter chroococcum TERHADAP PERTUMBUHAN STEK TANAMAN TIN (Ficus carica L.)
Authors: Fauza Saniar , T. Sabrina  , Hanum Hamidah
Published: December 2019

Perbanyakan tanaman tin umumnya dilakukan dengan stek batang atau cabang. Pertumbuhan stek dipengaruhi oleh faktor luar dan faktor dari dalam. Faktor luar diantaranya media tanam dan faktor dalam yaitu kandungan hormon, salah satu bakteri fiksasi N2 non simbiotik yang dapat mensekresi hormon pertumbuhan tanaman yaitu bakteri Azotobacter chroococcum. Penelitian dilakukan untuk menentukan komposisi media tanam dan aplikasi Azotobacter chroococcum dalam pengembangan pembibitan stek tanaman tin (Ficus carica L.). Penelitian telah dilaksanakan di desa Gampong Raya Dagang Kecamatan Peusangan, Kabupaten Bireuen, Provinsi Aceh dari bulan November 2014 sampai dengan Juni 2015. Rancangan yang digunakan adalah Rancangan Acak Kelompok Faktorial, Faktor pertama yaitu media tanam (M) terdiri dari enam komposisi : (top soil + pasir + Pupuk kandang sapi), (top soil + pasir + kompos jerami C/N<20),(top soil + pasir + kompos jerami C/N>20), (top soil + pasir + zeolit 5g), (top soil + pasir + kompos jerami C/N<20 + 5g zeolit), (top soil + pasir + kompos jerami C/N>20 + 5g zeolit), Faktor kedua yaitu aplikasi bakteri Azotobacter chroococcum (A) terdiri dari : (tanpa aplikasi A.chroococcum) dan (aplikasi A.chroococcum). Hasil penelitian menunjukkan bahwa interaksi antara komposisi media tanam dan aplikasi A.chroococcum berpengaruh nyata terhadap pH media, kadar N daun dan berat kering daun, dan tidak berpengaruh nyata terhadap panjang cabang, jumlah ruas,waktu munculnya tunas , karbon organik dan N total media. Komposisi media tanam top soil + pasir + kompos jerami C/N>20 + 5g zeolit + 5ml A.chroococcum dapat memberikan efek yang lebih baik terhadap pertumbuhan tanaman tin dibandingkan dengan komposisi media lain.
KERAGAAN EKSISTING TANAMAN AREN (Arenga pinnata Merr) DI SUMATERA UTARA (Peluang dan Potensi Pengembangannya)
Authors: Sebayang Lukas
Published: December 2019

Sugar palm (Arenga pinnata, Merr) is the most important after the coconut because it is a versatile crop that has the potential to be developed. Sugar palm main products are produced from extracting male flower it can be made as sugar, drinks, acetic and alcohol. Other parts of the plant can be use for ingredient. Data from 2004 shows sugar palm plantation covers 5288.91 acres that are spread in 20 districts in North Sumatra. Utilization sugar palm excellent for especially extracting products can be used as feedstock for ethanol as the needs of the bioenergy development will need to be followed up. Opportunities and potential development in North Sumatra palm is huge in because ecosystems, climate and suitability of land in this area is very suitable for the sugar plant . Opportunities and potential development sugar palm in North Sumatra is very large in because ecosystems, climate and suitability of land in this area is very suitable for the sugar palm plant. Besides adaptable to various types of soils including degraded lands , reeds and for reforestation and forest conservation . Data in 2014 , there is the land area is temporarily not cultivated in North Sumatra tend to rise until 2013, covering an area of 296 032 ha . Another challenge than land development , are super - impose intesifikasi input technology is still minimal , improvement of production management , improved processing , marketing is still traditional , dissemination is still limited to a small proportion of farmers , and the difficulty of seeds . So, we need a shared commitment between the central government and local governments to create policies how the potential development of the sugar plant can be followed in the future. This paper reviews the prospects of development potential, especially palm acreage potential, opportunities and challenges as well as the availability of the technology in North Sumatra.
INVENTARISASI SERANGGA PENYERBUK, HAMA DAN PENYAKIT DOMINAN PADA AREN
Authors: Siregar Ameilia Zuliyanti
Published: December 2019

Tanaman aren (Arenga pinnata Merr) dalam pertumbuhannya tergantung pada bibit, tipe tanah, kesesuaian lahan, faktor lingkungan, serta keberadaan serangga (terutama serangga penyerbuk) seperti lebah madu dan cocopet. Hama-hama dan penyakit pada tanaman aren diinventarisasi dari jenis Oryctes rhinoceros, Rhynchoporus sp, Sexava sp, Artona sp, dan kelelawar yang mendominasi pada pertanaman aren di Indonesia. Jenis penyakit yang sering menyerang pohon aren di persemaian adalah bercak dan kuning pada daun yang disebabkan oleh Pestalotia sp., Helmiathosporus sp. Pengendalian hama tanaman aren dapat dilakukan dengan pengendalian mekanik, kimia dan biologi. Aren sebagai sumber daya pangan daerah tropis memiliki berbagai manfaat bagi masyarakat sebagai sumber pangan (kolang-kaling, gula merah, pati tepung, cuka, nira, bioetanol), akar untuk obat tradisional, bahan kerajinan tangan, keranjang, atap rumah serta daun muda/janur untuk pembungkus kertas rokok.
PELESTARIAN DAN PERLINDUNGAN TEMBAKAU DELI Sebuah Perspektif Historis
Authors: Sumarno Edi
Published: December 2019

Rencana pemberhentian/penghapusan budidaya Tembakau Deli di lingkungan PTPN 2 Tanjung Morawa sungguh sangat disayangkan. Betapa tidak? Rencana ini dikhawatirkan dapat mengakibatkan kepunahan Tembakau Deli, sebuah komoditas khas yang tiada duanya di muka bumi, yang hanya dapat diproduksi dan menghasilkan kualitas terbaik di lahan-lahan “istimewa” anugerah Tuhan, yakni di wilayah antara Sungai Wampu dan Sungai Ular. Keistimewaan Tembakau Deli ini juga didukung oleh sistem budidaya, mulai dari penyiapan lahan hingga pengolahan pasca panen, yang khas dan hanya ada di Sumatera Utara. Di samping kekhasan itu, Tembakau Deli juga memiliki nilai historis yang tinggi bagi Indonesia, khususnya Sumatera Utara. Tembakau Deli adalah “pemicu” perkembangan industri perkebunan di Provinsi Sumatera Utara, dan juga provinsi lain di Indonesia. Tidak terlalu berlebihan pula jika dikatakan bahwa Tembakau Deli adalah “pemicu” dari perkembangan Provinsi Sumatera Utara. Sumatera Utara pasti tidak akan seperti saat ini, jika tidak ada Tembakau Deli.
APLIKASI PUPUK KOMPOS ECENG GONDOK DAN MIKORIZA BERPENGARUH TERHADAP PERTUMBUHAN TANAMAN TEMBAKAU DELI (Nicotiana tabaccum L.)
Authors: Utami Sri , JS Darmawati , Yunus Muhammad
Published: December 2019

Penelitian dilaksanakan pada bulan Februari 2016 sampai dengan bulan April 2016 di kebun percobaan BPTD PTP Nusantara II Jl. Kesuma No. 6 Sampali Kabupaten Deli Serdang dengan ketinggian tempat + 25 mdpl. Metoda penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan dua faktor, faktor pertama yaitu pemberian pupuk kompos eceng gondok (P) terdiri dari tiga taraf, yaitu P1 = 300 g/polibeg, P2 = 600 g/polibeg dan P3 = 900 g/polibeg. Faktor kedua yaitu pupuk Mikoriza (M), terdiri dari tiga taraf, yaitu M0 = tanpa pupuk Mikoriza (Kontrol), M1 = 7,5 g/polibeg dan M2 = 15 g/polibeg. Hasil penelitian menunjukkan bahwa aplikasi pupuk kompos eceng gondok memberikan pengaruh yang nyata terhadap tanaman tembakau Deli pada umur 8 MSPT pada parameter tinggi tanaman tertinggi 68,43 cm, jumlah daun terbanyak 13,30 helai, luas daun terluas 172,24 cm2, diameter batang 0,92 mm, panjang akar 26,58 cm, berat basah tanaman 125,61 g dan berat kering tanaman 19,66 g. Aplikasi pupuk Mikoriza dan interaksi memberikan pengaruh yang tidak nyata terhadap semua parameter pengamatan yang diukur.
PERTUMBUHAN DAN HASIL TIGA VARIETAS CABAI MERAH (Capsicum annuum L.) DENGAN APLIKASI KALIUM SULFAT
Authors: Alqamari Muhammad , Hanum Chairani , Hanum Hamidah
Published: December 2019

This research was conducted in the experimental field of Agricultural Faculty of North Sumatra Muhammadiyah University with a height of ± 27 meters dpl, held in july - nov 2012. This study aims to determine the best dose frequency of k2so4 on growth and the result of red chili varieties. This research was conducted using the split plot design with two factors; the varieties factor as the main plot with 3 kinds of varieties, named, V1 = TM 999, V2 = Lado, V3 = Landung; and the dose and frequency factors of k2so4 as subplot with 10 stages of treatment which is: K0 = 0, dose = 1.5 g / liter frequency 6 x (K1), 9 x (K2) and 12 x (K3), dose = 3 grams / liter frequency 6 x (K4), 9 x (K5) and 12 x (K6), dose = 4.5 g / liter frequency 6 x (K7), 9 x (K8) and 12 x (K9). The fertilizing was cunducted in the morning at 06.30 am - 08.30 am. The measured variables are plant height, numbers of chlorophyll, age of flower, numbers of flower, the percentage of deciduous fruit, weight of fruit/plot. Varieties show significant differences in plant height, numbers of chlorophyll leaf, age of flower, numbers of flower, the percentage of deciduous fruit, numbers of fruit, weight of fruit, weight of fruit per plot, moisture content and storability. Dose and frequency treatment of potassium sulfate is significantly different from controls. The best dose and frequency of this research is K9 which is 4.5 g/liter k2so4 with 12 time frequency during the growing season in TM 999 and Landung while the varieties of Lado are at dose of 3 g/liter of water with 12 times in giving (K5).
PERTUMBUHAN DAN PRODUKSI JAGUNG (Zea mays. L) PADA BERBAGAI PENGELOLAAN GULMA DI KABUPATEN DELI SERDANG
Authors: Fitria  , Purba Edison , Sabrina Tengku
Published: December 2019

Kehadiran gulma pada budidaya jagung dapat menurunkan produksi jagung. Cara pengelolan gulma yang tepat diperlukan untuk menenkan pertumbuhan gulma dan diharapkan dapat meningkatkan pertumbuhan dan produksi jagung pada lahan budidaya. Penelitian ini bertujuan untuk mengetahui pengaruh herbisida terhadap cara pengelolaan gulma di kabupaten Deli Serdang. Penelitian dilaksanakan di kebun Balai Benih Induk Tanaman Palawija, Tanjung Selamat Kecamatan Sunggal Sumatera Utara pada bulan Juli-September 2013, menggunakan Rancangan Acak Kelompok (RAK) non faktorial dengan 10 perlakuan dengan 3 ulangan pengelolaan gulma. Parameter yang diamati adalah tinggi tanaman, berat 100 biji dan berat pipil per plot. Hasil penelitian menunjukkan bahwa cara pengelolaan gulma berpengaruh tidak nyata pada tinggi tanaman umur 3,6 dan 9 MST dan Bobot 100 biji namun berpengaruh nyata terhadap aplikasi herbisida dengan menggunakan calaris produksi tongkol per plot sebesar 11.47 kg dibandingkan dengan gulma tidak dikendalikan 3.04 kg, dan Produksi Pipil Per Plot.
Deskripsi Makrofauna pada Tanah Andisol di Kabupaten Karo dengan Berbagai Ketebalan Abu Vulkanik Gunung Sinabung
Authors: Simbolon Armando Septian , Sembiring Mariani , Sabrina Tengku
Published: December 2019

Changed soil conditions will result in the changed population and diversity in the soil. The eruption of Sinabung Mount caused the surface of the soil covered with volcanic ash with various thicknesses. This research was to study a description of macrofaunal communities at different thicknesses of Sinabung volcanic ash on andisol soil in Karo Regency. The experiment was conducted in May 2017. The experiment plot was located at four locations, location I was not covered by ash (0 cm), location II was covered with thin ash (≤2 cm), location III was covered with medium ash (2-8 cm), location IV was covered with thick ash (≥8 cm) using the transect sampling method. Samples was collected by using the Pitfall Trap, Monolith quadrant, and the Hand Sorting method. Macrofaunal communities found 3 phyla, 6 classes, 11 orders, 17 families, and 18 species at location I. Macrofaunal communities found 3 phyla, 7 classes, 11 orders, 16 families, and 17 species at location II. Macrofaunal communities found 2 phyla, 3 classes, 7 orders, 9 families, and 9 species at location III. Macrofaunal communities found 1 phylum, 2 classes, 5 orders, 7 families, and 7 species at location IV.
Respon Ketahanan Beberapa Varietas Cabai Rawit (Capsicum frutescens L.) Terhadap Pemberian NaCl secara In Vitro
Authors: Adelia Lita , Siregar Luthfi A. M. , Lubis Khairunnisa
Published: December 2019

This study was to determine the resistance of ten cayenne pepper (Capsicum frutescens L.) varieties to salinity stress in viro. This research used completely randomized design with two factors, they were cayenne pepper varieties with 10 varieties of Tetra Hijau, Pedas, Cakra Hijau, Sigantung, Wijaya, Sapade, Sret, Bara, Genie and Hanna 08 and NaCl concentration in growing media with five levels 0 ppm, 2500 ppm, 5000 ppm, 7500 ppm dan 10.000 ppm. The results showed that the variety of cayenne pepper and concentration of NaCl and interaction of both had a significant effect on the crown fresh weight and root fresh weight. Sigantung varieties have the highest average on all observed characters.
Pengaruh Jenis Larutan Osmotik pada Invigorasi Benih Kakao (Theobroma cacao L.) dengan Beberapa Lama Pengeringan
Authors: Hutabarat Sri Lestari , Haryati  , Irsal Irsal
Published: December 2019

This study aims to determine the effect of osmotic solution on cocoa (Theobroma cacao L.) seed invigoration with several long drying. This research was conducted at the Laboratory of Seed Technology, Faculty of Agriculture, University of Sumatera Utara, from August to September 2016, using a randomized block design with 2 treatment factors. The first factor is a type of solution ie without immersion; equates; coconut water 50%; coconut water 100%; Polyethylene Glycol (PEG) 6000 5%; PEG 6000 10% and the second factor is long drying with 4 levels ie 1 day; 2 days ; 3 days; 4 days. The results showed that the best treatment of osmotic solution was found in the treatment of coconut water with 50% concentration which resulted in a germination rate of 5.51 days and a vigor index of 3.79. The best long of drying treatment was 1 day drying with average germination potential 99.17%, germination rate 4.46 days, normal germination 93.06%, abnormal germination, 12.21%, 5.35% dead seed and vigor index 5,34. The best treatment interaction on the combination of treatment
The Growth Response of Madeira Vine (Anredera cordifolia (Ten.) Steenis) on Different Levels of Shade and Applicationof Fertilizer and Biochar
Authors: Lubis Tapi Mutia Ariani , Hasanah Yaya , Rahmawati Nini
Published: December 2019

The intensity of the shade and fertilizer are the two aspects of the environment that important for the growth of madeira vine plants. The purpose of the research was to know the growth response of madeira vine on different levels shade and application of fertilizer and Biochar. The research was conducted in the research field of Faculty of Agriculture, Universitas Sumatera Utara, Medan about ± 32 m above the sea, on June to August 2017. This research used Split Plot Design with 2 factors, level of shade (0%; 25%; 50%; dan 75%) and application Fertilizer (without fertilizer; urea 1.6 g/plant; chicken manure 53.3 g/plant; biochar rice husk 294.4 g/plant). This results research showed that without shade (0%) increased the growth of plant length but the 75% shade increased of chlorophyll a, chlorophyll b, and total chlorophyll. Application of chicken manure was increasing plant length, shoot fresh weight but application biochar rice husk increased crop dry weight and leaf area. The interaction of different level shade and application of fertilizer was not significant affecting to the growth madeira vine plant in the end of observation.
Diversity of Insects in Shallot (Allium ascalonicum L) Plantations at Various Altitudes
Authors: Nurhandani Pebi , Marheni  , Safni Irda , Girsang Setia Sari
Published: December 2019

Recently the improvement of shallot seed quality using true shallot seed has been developed. This research was aimed to know diversity of insects and the role of insects on the cultivation of shallot seeds in various altitudes. This research was conducted in three different districts (Deli Serdang, Simalungun and Toba Samosir districts) in Plant Pests and Diseases Laboratory, Faculty of Agriculture, University of North Sumatra, Medan from July 2017 until January 2018. This research used four different insect traps (sweep net, pitfall trap, hand picking, and yellow trap), and repeated for six times. The results showed that insects caught on shallot farmings in Balige highland were 11 orders and 31 families with the highest relative density value was 22.5% and the lowest relative density was 0.35%. The value of insect diversity index of Shannon-Weiner (H') on shallot farming in Balige was 2.72 (moderate) and the value of insect evenness index (E) was 0.71 (high). The insects caught on shallot farming in Pematang Siantar middleland were 11 orders and 22 families with the highest relative density value was 28.7% and the lowest relative density was 0.35%. The value of insect diversity index of Shannon-Weiner (H') on shallot farming in Pematang Siantar 2.42 (moderate) and the value of insect evenness index (E) was 0.71 (high), and on shallot plantations at Lubuk Pakam lowland were 10 orders and 21 families with the highest relative density value was 24.7% and the lowest relative density 0.39%. The value of insect diversity index of Shannon-Weiner (H') was 2.32(moderate) and the value of insect evenness index (E) was 0.85 (high).
Changes in some chemical properties of inceptisol soil and growth of maize (Zea mays L.) due to durian skin compost and SP36 fertilizer
Authors: Tarigan Anggra Purma , Supriadi  , Lubis Alida
Published: December 2019

Inceptisol is a widely enough soil and has many obstacles to use as agricultural field, some of the constraints are; Low level of the organic content, soil acidity, high level of Al saturation and low CEC hance this land cause a lower productivity. increasing its productivity by giving organic material compost which is durian skin compost and SP36 fertilizer.This research is aimed to know the change of some chemical properties of Inceptisol soil and growth of corn plant (Zea mays L.) due to composting of durian skin and SP36 fertilizer. This study was conducted by using Randomized Block Design (RBDs) method with two replications consisting of thirty two treatments. The treatments divided in two addition fertilizer durian skin compost (B) and SP36 (P) fertilizer consisting of; 0 g / polybag (B0), 12.5 g / polybag (B1), 25 g / polybag (B2), 37.5 g / polybag (B3), 0 g / polybag (P0), 0,25 g / polybag (P1), 0,50 g / polybag (P2), 0.75 g / polybag (P3), and their interactions. The results showed that durian skin compost significantly affected the carbon content on soil, and SP36 fertilizer had significant effect on soil P level, and both interaction had significant effect on the height of plant.
Application of Organic Liquid Fertilizer on Growth and Production of RiceVarieties (Oryza sativa L.)
Authors: Indra K. Hermawan , Ginting Jonatan , Charloq
Published: December 2019

The aims of this study was to determine the effect of organic liquid fertilizer concentration and varieties on the growth and production of several varieties rice. This research had done at Desa Sendang Rejo, Kecamatan Binjai, North Sumatera with the 50 meters of sea level, from August until November 2016. This research used randomized block design with 2 factor treatments. The first factor was organic liquid fertilizer concentration with 4 levels 0 cc/ litre of water, 3 cc/liter of water, 6 cc/ litre of water and 9 cc/liter of water. The second factor was varieties with 3 levels Ciherang, Inpari 30 and Inpari 32. The result showed that the concentration organic liquid fertilizer significantly effect the plant height, tillers, 1000 grain weight and production per plant. Best result is obtained in treatment 9 cc/litre of water.
Efficiency Use of Nitrogen In Several Palm Oil Varieties With Treatment of Nitrogen Fertilizer Levels In Main Nursery
Authors: Afrillah Muhammad , Hanum Chairani , Rauf Abdul
Published: December 2019

Efficiency use of nitrogen in several palm oil varieties with treatment in nitrogen fertilizer level in main nursery. This study aims to determine the growth characteristics of several varieties of palm oil efficient use of nitrogen with the provision of various nitrogen levels in the main nursery. The research was conducted in the nursery area of Yos Sudarso Binjai road and the Soil Laboratory of the Palm Oil Research Center, Medan from May to November 2017, using a factorial randomized block design with two factors. The first factor is varieties consisting of 7 types namely Avros, Simalungun, PPKS 540, Yangambi, PPKS 718, PPKS 239, Langkat. The second factor is the N fertilization dose consisting of 5 levels ie 0, 25, 50, 75 and 100% from fertilizer recommendation. The results showed that the addition of N level increased the dry weight of the canopy, and the uptake of plant N nutrients. The efficient use of optimal Nitrogen in Yangambi varieties was obtained on N 25% fertilization, while Avros and PPKS 239 were at 50% recommendation level. 75% recommendation produce optimal value efficient use of N on Simalungun variety, PPKS 718, and Langkat. PPKS 540 varieties efficient use of N optimal at 100% recommendation level.
Availibility of P, K in paddy Land Under Organic application
Authors: Harahap Fitra Syawal , Rauf Abdul , Hidayat Benny , Walida Hilwa , Jamidi  , Lisdyani
Published: December 2019

Organic materials in situ remaining paddy crops in paddy fields are much abandoned by farmers. Most of the remaining harvested are burned, stacked in the cultivated, or used for animal feed or as a fungus. Straw compost is source of Potassium (K) and Silica (Si). About 80% of K absorbed by plants is in the straw. The return of straw to the soil may slow the impoverishment of Potassium (K) in the soil. This study aims to find out how the availability of phosphorus (P) and potassium (K) nutrients by giving organic matter as soil fertility status in paddy fields in Beringin Subdistrict, Deli Serdang Regency and to review management alternatives that are in accordance with the soil fertility status in the Central Land Rice fields in Beringin Subdistrict, Deli Serdang Regency. This research was carried out in the Central Rice Field in Beringin Subdistrict, Deli Serdang Regency ± 11 meters above sea level. The taking of soil samples was taken in the upper layer at the top soil depth of 0-20 cm, 20-40 cm and the coordinates were recorded using GPS (Global Positioning System). While information on land management is obtained by direct observation in the field and in-depth interviews with farmers in snow ball which aims to obtain complete information from farmers. Soil samples that have been taken in the field are then analyzed in the laboratory. Soil chemical properties analyzed in laboratory soil chemical properties analyzed at P2O5 Bray II (ppm) laboratory K2O Hcl 25% (mg / 100g). To determine the chemical properties of soil with certain criteria that have been determined. Based on Technical Guidelines for Evaluation of Soil Fertility The direction of management of soil fertility needs to be added to organic matter and phosphorus fertilization regularly so that soil fertility can be sustainable. Further research is needed in order to find out the addition of phosphorus fertilizer and organic matter in each unit of land.
Klarifikasi Keanggotaan Manggis ‘Malinau’ Dalam Species Garcina Mangostana Menggunkan Analisis Filogenik
Authors: Santoso Panca Jarot , Mansyah Ellina , Pancoro Adi
Published: December 2019

Analisis filogenetik telah dilaksanakan terhadap 12 kasesi manggis (Garcinia mangostana L.) berdasarkan polimorfisme gen lestari ITS-nrDNA. Penelitian telah dilaksanakan di Laboratorium Genetika Tumbuhan SITH-ITB dan Laboratorium Pemuliaan Balitbu Tropika dari tahun 2012 sampai 2014. DNA genom diisolasi dari pucuk muda daun manggis. Daerah lestari ITS diamplifikasi menggunakan primer spesifik ITS5-F dan ITS4-R. Pohon filogenetik dikonstrusi berdasarkan polimorfisme dari sekuens ITS masing-masing aksesi menggunakan perangkat lunak Geneious ver. 5.5.7 menggunakan satu aksesi G. dulcis sebagai outgroup. Berdasarkan filodendrogram yang terbentuk, menunjukkan bahwa semua sampel yang dianalisis umumnya terdistribusi secara monofiletik, menunjukkan bahwa sampel-sampel tersebut berasal dari satu moyang yang sama. Sebelas dari 12 sampel telah tergroup dalam spesies G. mangostana, sebaliknya varietas ‘Malinau’ secara meyakinkan berada di luar group, yang menunjukkan bahwa ‘Malinau’ merupakan beda spesies dengan 11 sample lain yang digunakan dalam studi ini. Fakta ini didukung oleh karakteristik morfologi yang berbeda pada ‘Malinau dibandingkan dengan 11 aksesi lainnya.
Karakter Vegetatif Berbagai Varietas Tomat Terhadap Pemberian Aluminium Pada Media Kultur Hara
Authors: Naibaho Dunan
Published: December 2019

Tujuan penelitian ini adalah untuk mengetahui karakter vegetatif akar dan tajuk beberapa varietas tomat terhadap pemberian aluminium pada media kultur hara. Penelitian ini dilaksanakan di rumah kaca Fakultas Pertanian Universitas Sumatera Utara dari Desember 2017 sampai dengan Februari 2018. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial dengan faktor varietas (V1=Varietas Timothy; V2=Varietas Fortuna; V3=Varietas Pandawa Lima; V4=Varietas Citra Asia; V5=Varietas Trico) dan konsentrasi aluminium (0 g; 1,5 g; 3,0 g). Parameter penelitian ini antara lain tinggi tanaman, panjang akar, panjang akar relatif, bobot basah dan kering akar, bobot basah dan kering tajuk, bobot kering akar dan tajuk relatif, dan volume akar tanaman tomat. Analisis data menggunakan IBM SPSS Statistics v.20. Hasil penelitian menunjukkan bahwa varietas timoty (V1) menunjukkan perbedaan yang sangat nyata terhadap tinggi tanaman, bobot basah akar, bobot basah tajuk, bobot kering akar, panjang akar relatif dan berpengaruh nyata pada volume akar pada media kultur hara. Pemberian aluminium pada media kultur hara menunjukkan perbedaan yang sangat nyata terhadap tinggi tanaman, panjang akar, bobot basah akar, bobot kering akar, bobot kering tajuk, volume akar, bobot kering akar relatif, dan berpengaruh nyata terhadap bobot kering tajuk relatif. Perlakuan Al 3 g menunjukkan nilai terendah pada semua variabel.
Various Natural Ingredients as Plant Growth Regulator to Increasing Viability True Seed Shallot of Onion
Authors: Siburian Elseria , Siregar Luthfi A.M.
Published: December 2019

The research was aimed to determine the source of plant growth regulator from natural ingredients that can increase the viability of onion True Seed Shallot (TSS). This research was conducted at the Laboratory of Seed, Universitas Sisingamangaraja XII Tapanuli, North Sumatra from June until July 2018. This research used Completely Randomized Design. The treatment of this research: Z0 (control/distilled water), Z1 (GA3 100 ppm), Z2 (BAP 100 ppm), Z3 (banana hump extract), Z4 (bamboo shoot extract), Z5 (onion extract), Z6 (coconut water). Each treatment has four replications. Parameters of this research include maximum growth potential (MGP), germination, root length, and hypocotyl length. Data analysis using IBM SPSS Statistics v.20. The results showed that treatment onion extract can increase the highest TSS germination at 7 and 14 days after planting (DAP) amount 85.83% and 80.84% respectively. Treatment bamboo shoots, onion extracts, coconut water and GA3 can increase the MGP which is classified as high ranging from 81.67 to 92.50%. Soaking the onion TSS with bamboo shoot extract and GA3 treatment can increase the hypocotyl length amount 4.06 cm and 3.91 cm respectively.
Analisis Komoditas Pertanian Unggulan dan Arahan Pengembangannya di Kabupaten Pakpak Bharat
Authors: Sebayang Lukas
Published: December 2019

Pengembangan komoditas unggulan secara terintegrasi pada suatu wilayah diharapkan dapat meningkatkan nilai tambah komoditas, pendapatan masyarakat dan perekonomian wilayah. Tujuan penelitian ini adalah untuk menganalisis komoditas unggulan, potensi pengembangan untuk komoditas unggulan, analisis hirarki wilayah dan arahan rencana pengembangan komoditas unggulan. Komoditas unggulan didapatkan dengan analisis Location Quotient (LQ) dan Shift Share Analysis (SSA). Lahan yang berpotensi pengembangan dianalisis dengan arahan ketersediaan dan kesesuaian lahan serta sistem informasi geografis, Hiraki wilayah dengan analisis skalogram. Arahan rencana pengembangan komoditas unggulan ditetapkan berdasarkan pertimbangan lahan yang berpotensi pengembangan, hirarki wilayah, lahan yang kompak dan kebijakan pemerintah daerah. Hasil penelitian menunjukkan komoditas unggulan adalah gambir, padi sawah dan jeruk. Pengembangan komoditas unggulan tanaman perkebunan diarahkan di Kecamatan STTU Jehe seluas 4.512,56 ha. Pengembangan komoditas unggulan tanaman pangan diprioritaskan di Kecamatan Pangindar seluas 2.182,81 ha.
Analysis of The State of Educative Workers in Polytechnic of Agricultural (STPP) Lecturers Based on Empirical Data in Sumatera Utara
Authors: Harahap Nurliana , Siregar Ameilia Zuliyanti , Kansrini Yuliana
Published: December 2019

The objectives of the study are determined to analyze the competencies, motivation and implementation of lecturers in improving performance. This research was conducted in 4 STPPs from 6 service education colleges under the Ministry of Agriculture namely Medan STPP, Bogor STPP, STPP Magelang and STPP Malang. The research area was chosen purposively with the consideration that the six locations were universities belonging to the Ministry of Agriculture which had received performance allowances since 2012. The researchers wanted to determine how the level of performance capabilities of government officials (PNS) especially lecturers in producing quality graduates. Lecturer competencies have a significant influence on the performance of lecturers. This indicates that the higher the competence possessed by the lecturer, the higher the performance of the lecturer. Lecturer competency consists of four types of competencies, namely pedagogic competence, social competence, professional competence and personality competencies. Based on purposively methods, the results of research in 4 (four) STPP, social competency is the ability to communicate and interact effectively and efficiently with students, fellow teachers, parents / guardians of students, and the wider community having the highest influence of 34.6%, then competency professional, ability in mastering subject matter widely and deeply, that is equal to 23.2%. Providing performance allowances which is one form of the reward and punishment system and provides a significant influence on the performance of the Lecturer.Motivation has no significant effect on the performance of the Lecturer in Agricultural Extension College (STPP).
Saepo Modi and Correlation among Statistical Methods for Measuring of Phenotypic Stability
Authors: Malau Sabam , Siagian Albiner , Sihotang Maria Rumondang , Simanjuntak Rosnawyta , Hutabarat N.D.M. Romauli
Published: December 2019

A stabile phenotype is desired. Many statistical methods are available to measure stability. So far, the choice of parameter of stability depended on the perception on the interaction of genotype and environment or ease of counting. The goal of this research was to study correlation among stability parameters. In total of 16 stability parameters were used in this research. Saepo modi (SMsp) as a stability parameter was also used. Branch rust incidence, leaf rust incidence, and leaf rust severity on Arabica coffee were used as variables. This research result showed that none of the parameters of stability correlated significantly with all parameter of stability. It coud be concluded that if someone want to use only one stability parameter, it is preffered to make use of regression and deviation from regression (D2i). In the case a researcher needs to use several of parameters of stability, Saepo modi (SMsp) might be exercised.