Penelitian ini bertujuan untuk mengetahui keanekaragaman aksesi aren yang tersebar di Kabupaten Tapanuli Selatan dan mengelompokkan populasi seleksi untuk mendapatkan produksi yang tinggi. Delapan puluh aksesi aren populasi alam asal empat kecamatan telah di identifikasi menurut IPGRI (International Plant Genetic Resources Institute, 1995) dan dianalisis. Hasil menunjukkan terbentuknya 4 cluster yang disimpulkan bahwa cluster 1 merupakan kelompok aksesi aren dengan karakter fenotip yang sesuai untuk memproduksi buah dari mayang bunga betina. Sedangkan cluster 3 merupakan kelompok aksesi aren dengan karakter fenotip yang sesuai untuk memproduksi nira (bahan baku gula aren) dari mayang bunga jantan.

The Non-Forest Area is an outside of forest area which can be used for other reconstruction sector activities, one of them is for agricultural land area sector. At Sitellu Tali Urang Julu, Pakpak Bharat district, the potential utilized land for agricultural cultivation activities is largest and expecting will improve the welfare of local farmers. This research aimed was to determine the land suitability in Sitellu Tali Urang Julu, Pakpak Bharat district for oil palm plantation (ElaeisguenensisJacq). The research method was survey in Sitellu Tali Urang Julu, Pakpak Bharat. This research conducted by taking soil samples in field then analyzed in laboratory. The survey activities consist of 5 stages; there were pra-survey, main survey, soil analysis in Laboratorium and also processing data. The survey results showed that retention and nutrients availability were the most limiting factor on Non-forest area Sitellu Tali Urang Julu for developing oil palm plantation, moreover the regional air temperature should be considering. Actual land conditions that cultivated in Sitellu Tali Urang Julu Subdistrict is oil palm is 939.11 ha. Than potential area land that cultured in Sitellu Tali Urang Julu is: Oil Palm around 939.11 hectares, cannot be understood.

ABSTRAKPenelitian ini bertujuan Untuk mengetahui hubungan sifat morfologi tanaman terhadap produksinya berdasarkan skuen ketinggian tempat di Kabupaten Tapanuli Selatan. Lokasi yang menjadi kajian penelitian ini berdasarkan skuen tinggi tempat di Daerah Kabupaten Tapanuli Selatan. Sample tanaman diambil di Desa Situmba dan Desa Panabari Kecamatan Tano Tombangan Angkola dengan ketinggian 0 -400 m dpl, Desa Pasar Sempurna, Desa Gunungtua, Desa Aek Nabara Kecamatan Marancar dengan ketinggian 400 -800 m dpl dan Desa Sialaman Julu, Desa Sialaman Jae Kecamatan Sipirok dengan ketinggian > 800 m dpl. Pengamatan terhadap perkembangan morfologi tanaman aren di lapangan dilakukan terhadap parameter Tinggi Tanaman, Umur Tanamam, Diameter Batang, Umur Sadapan, Tingkatan Malai, dan Jumlah Klorofil a dan b. Hasil penelitian menunjukkan bahwa yang paling berpengaruh terhadap produksi produksi nira adalah Tinggi Tanaman dan Umur tanaman (37,2 %), sedangkan untuk produksi gula yang paling berpengaruh adalah tinggi tanaman (29,2 %).

Scheduling lectures is a routine work in the academic system in higher education every time to facing a new semester. In the implementation, often the schedule that has been issued has not been fixed so it requires to rescheduling. For this reason, a new lecture scheduling system is needed using the Welch Powell Graph Coloring Algorithm. This study was done in the Informatics Engineering Departement of Universitas Malikussaleh using the subjects schedule during 2013, 2014 and 2015. Based on the results of this study it can be concluded that the Welch Powell Graph Coloring Algorithm can solve properly the problem of scheduling lectures, in this case there are no clashes between scheduled components.

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