Evaluasi Kemampuan Lahan Marginal Desa Sihiong Bonatua Lunasi Tobasa Untuk Tanaman Anggur (Vitis Vinifera L.) Dan Jambu Biji (Psidium Guajava L.)

Penelitian bertujuan untuk mengetahui kemampuan lahan marjinal di Desa Sihiong Kecamatan Bonatua Lunasi Kabupaten Tobasa mendukung tanaman anggur (Vitis vinifera L.) dan jambu biji (Psidium guajava L.), dimulai tahun 2012-2014 menggunakan metoda survey, dengan dua tahapan yakni mengklasifikasikan kemampuan lahan di Sihiong dan mengevaluasi kesesuaian lahan terhadap tanaman anggur dan jambu biji. Data primer dari lapangan adalah kemiringan lereng, erosi, solum, drainase, singkapan batuan dan bahaya banjir/genangan. Analisis properti tanah (tekstur, permeabiltas, bulk density, salinitas, bahan organik, pH, Kapasitas Tukar Kation, Kejenuhan Basa) dilakukan di laboratorium Riset dan Teknologi Fakultas Pertanian USU Medan. Hasil penelitian menunjukkan bahwa lahan daerah Sihiong termasuk kelas III dengan kemampuan lahan aktual kelas III(es). Upaya perbaikan dapat dilakukan untuk mengatasi erosi dengan membuat teras di lahan sedangkan tekstur tanah Lempung Berpasir (t4) tidak dapat dirubah. Dengan adanya perbaikan maka kemampuan lahan potensial Sihiong menjadi kelas III(s). Kemampuan lahan di Desa Sihiong dapat mendukung tanaman Tanaman Anggur (Vitis vinifera L.) pada kesesuaian lahan aktual terendah S3 (eh) dan upaya perbaikan akan meningkatkan kelas potensial menjadi S2 (tc,wa) dengan faktor pembatas tc,wa (temperatur dan ketersediaan air/lama masa kering) tidakdapat/sulit diperbaiki. Kesesuaian untuk tanaman jambu biji (Psidium guajava L.) berada pada kelas S3 (nr,eh) dengan faktor pembatas retensi hara dan bahaya erosi. Alternatif perbaikan dengan pemberian bahan organik yang diperkaya mineral basa dapat meningkatkan kelas kesesuaian lahan potensial menjadi S2 (tc) dengan faktor pembatas tc (temperatur) yang sulit diperbaiki

Uji Efektivitas Ekstrak Kulit Langsat (Lansium Domesticum) Sebagai Anti Nyamuk Elektrik Terhadap Nyamuk Aedes Aegypti (a Test Onthe Effectiveness of Lansium Peel Extract (Lansium Domesticum) as Mosquito Electric Repellent Against Aedes Aegypti Mosquitoes)

The research concerning a test on the effectiveness of lansium peel extract (lansium domesticum) as a mosquito electric repellent against AedesAegypti mosquitoes has been done. This research aimed to know the effectiveness of lansium peelextractas anelectricmosquito repellent. The method used was laboratory experiments. The lansium peel extract obtained from the maceration method added with absolute methanol was evaporated to produce thick lansium peel extract. Then, the extract was diluted to the concentration of 35, 30, 25, 20, and 15%. The research data obtained was the death of aedes aegypti which then was analyzed by statistical varian analysis test (ANOVA) with the95% confidence level. It was followed by Duncan test to determine the most effective concentration. The result showed that the most effective concentration as electrical mosquitoes repellent was 25%

Analisis Pola Interaksi Sosial Dalam Bentuk Toleransi Antara Masyarakat Transmigrasi Dan Masyarakat Asli

This study aims to determine the analysis of patterns of social interaction in the form of tolerance between communities and indigenous transmigration in Village Sungai Pelang Matan Hilir Pelang Southern District of Ketapang. The method used is qualitative method with descriptive analysis. Data collection techniques used were observation, interview and documentation study. Data collection tool is a guide observation, interview and documentation tools. The results of this study indicate that the patterns of social interaction in the form of religious tolerance between the two communities to respect and appreciate people who are running worship and follow the teaching activities together, in the form of social tolerance characterized by cooperation in the form of mutual aid road improvements, manufacturing trench, planting rice, and to help neighbors who were doing a celebration, and in the form of cultural tolerance is characterized by the presence of transmigration community when invited by indigenous people in the event trampled ground, hair clippers and begendang events, and the presence of indigenous communities when invited to the event festivity selapanan transmigration community

Evauasi Kesesuaian Retensi Hara Untuk Tanaman Bawang Merah (Allium Ascalonicum) Di Kecamatan Baktiraja Kabupaten Humbang Hasundutan Sumatera Utara

The aim of this research is to evaluate the suitability of nutrient retention for Shallot (Allium ascalonicum) in Baktiraja Sub-district of Humbang Hasundutan District, North Sumatera Province. The method of this search is survey method with Purposive Random Sampling Method with 30 samples and 3 meters, which is pH, CEC, and C-Organic. The result of this research show that land quality nutrient retentiont at Baktiraja Sub-District of Humbang Hasundutan District for shallot (Allium ascalonicum) is moderately suitable (S2). The characteristics for pH and C-Organic are highly suitable (S1), and at the same time is moderately suitable (S2) for CEC