The Yam (Dioscorea alata L.) as one of the varieties of the “uwi” plant has the potential to support food diversity and food security in the future. This plant is very tolerant to be planted on dry land which in Indonesia is abundant even in the world. The purpose of this study was to obtain alternative types of non-rice food from Uwi, starting with the identification of the variation and multilocation yield test to see the adaptation of each accession were obtained at various upland agro-system, Cluster analysis on plant diversity based on tuber morphological properties obtained 13 groups with 80% similarity level. While the results of adaptation tests indicate that Yam generally can adapt to various agro-ecological, but only a few accession can grow well under teak stands, especially those with large trunks and tubers. The best yield is in the upland of highlands of the Ponorogo region, followed by the lowlands of Madiun and the lowest under teak stands. However, certain types can adapt to a broad spectrum of agroecology.

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Abstrak: Setiap daerah pasti memiliki aset atau potensi yang dapat dikembangkan,termasuk Desa Mekar Sari, Kecamatan Gunungsari, Kabupaten Lombok Barat. Salah satu aset yang dimiliki oleh masyarakat Desa Mekar sari adalah perkebunan singkong, dan aren. Dimana hasil perkebunan tersebut mengasilkan akar singkong dan gula aren. Pengelolaannya masih berbentuk barang utuh yang masih belum dikelola lebih jauh dengan nilai jualnya sangat kecil. Produk olahan dari akar singkong dan gula aren itu sangat banyak dan variasi. Pendampingan yang akan dilakukan dalam kegiatan pengabdian kepada masyarakat ini adalah pengembangan olahan dari bahan baku unggulan menjadi produk keripik singkong, puding gula aren, dan gula aren briket. Pendampingan dilakukan mulai produksi, pengemasan, dan pemasaran. Pendampingan dilakukan secara berkelanjutan sampai produk yang dihasilkan bernilai jual tinggi. Pendampingan ini bertujuan untuk meningkatkan perekonomian, ketrampilan, dan pengetahuan masyarakat Desa Mekar Sari.   Kata kunci: Keripik Singkong, Gula Aren, Pemasaran Produk

The objectives of this study are (1) to determine the availability of food, income and food purchasing power of the residents of the City of Mataram and (2) To estimate the availability and area of minimum agricultural land for food in the City of Mataram. The research was conducted by survey method, and primary data collection was carried out by structured interviews using a list of questions, while secondary data collection was carried out by recording or copying from secondary sources at the relevant agencies. Data analysis was performed using functional equations with income constraints aided by SPSS software. The results showed that there was enough available food in the city of Mataram sourced from local production and sourced from food supply outside the city of Mataram, respectively. Amounted to 44% and 56% of the total rice food needs of 45,375 tons/year in 2013. Rice food expenditure is relatively small, which is between around 1.67% of the total income per capita of the population of Mataram City of Rp 5,880,000 / capita/year, so that in terms of access to rice food is relatively easy and inexpensive. The land for food continues to decrease due to land conversion from agriculture to non-agriculture use with a range of 4% per year. Without controlling the land conversion, it is projected that Mataram city is going to be rare in land for food within 25 years. To support regional food security in the city of Mataram city needs at least 453 to 569 hectares to produce the food sustainably, assuming a constant population.

West Lombok Regency is one of rice production centers in West Nusa Tenggara. Rice millings operate in the Regency to process raw rice into rice (hulled rice), and become a central point in the rice agro-industry and institution that connects actors in the supply chain, starting from raw rice to producing hulled rice as the main product. The aim of this research is to: (1) analyze supply chain mechanisms related to product flows, information flows and financial flows on rice; (2) analyze added value received by actors in the rice supply chain network; and (3) analyze marketing efficiency of rice in West Lombok Regency. This research uses descriptive methods. Data collection was carried out using surveys to the research locations of the districts of Narmada, Lingsar and Gerung, which all are the centers of rice in West Lombok Regency. There were 30 rice farmer respondents and some institutions or individuals involved in the flow of rice from farmers to end consumers. Data were analyzed by applying the analyses of descriptive, added value, and marketing efficiency. The results showed that in the rice supply chain there have been flows of product, finance, and information, amongst marketing actors or institutions. The added value and profit resulting from processing unhulled rice to hulled rice were IDR 6,100/kg and IDR 5,850/kg, respectively. It was also found that in West Lombok Regency there are three patterns of marketing channels and all of the channels operated efficiently.