Judul: Produksi dan Pendapatan Usahatani Padi Petani Anggota dan Non Anggota Kelompok Tani di Desa Kopo Kecamatan Cisarua Kabupaten Bogor
Abstrak: Rice is one of the leading food crops in the Kopo village. The production rate of rice in Kopo village is various. One of the causes of this diversity is the difference in group membership. This leads to the difference in the farmer income level of rice farming in Kopo village. In order to find out the difference in the level of production and income caused by the difference in the group membership, it is important to do this research. The aims of this research were to : (1) analyze the factors affecting rice production of member and non-member of farmer group in Kopo village and (2) compare the income level of member and non-member of farmer group in Kopo village. The technique of data collection was purposive sampling method by using questionnaire as a tool to interview a total of 77 samples. The method of data processing was done by using Cobb Douglas’ production function analysis and income analysis. The result showed that the factors of seed production, manure, female labor within the family, female labor outside the family and farmer group membership were significantly influenced the rice production. The result of income analysis showed that based on the membership of farmer group, the farmers that belonged to the membership had greater income than those not belong to the membership with the R/C ratio over the total cost of 2.15. Farming income based on the land ownership status showed that farmers who rented the land had higher income level than those who owned the land with the value of R/C ratio at the total expense of 2.22. Based on the membership status of farmer group and land ownership, the income level of farmer group members who rented the land was higher than that with other characteristics. To increase the level of production and income, it could be suggested that the farmers could use the factors that influence the production significantly and join the farmer group membership.
Keyword: farmer group membership, income analysis, production analysis, farming, rice

Judul: Factors Affecting Farmers Decisions in Switching Professions to Non Farmers (Case study: Rice Farmers in Pamijahan District, Bogor)
Abstrak: Kecamatan Pamijahan sebagai sentra produksi padi ketiga di Kabupaten Bogor mengalami permasalahan perubahan struktur tenaga kerja dan mengalami penurunan jumlah tenaga kerja sektor pertanian. Peralihan profesi tersebut dapat berdampak pada menurunnya produksi padi di Kecamatan Pamijahan. Penelitian ini bertujuan untuk: (1) menganalisis persepsi petani padi terhadap manfaat usahatani bagi keluarga petani; (2) menganalisis tingkat pendapatan usahatani padi; (3) menganalisis faktor-faktor yang memengaruhi keputusan petani dalam bertahan atau beralih profesi ke non petani di Kecamatan Pamijahan. Penelitian ini mengggunakan metode analisis deskriptif (skala Likert), analisis pendapatan, dan regresi logistik biner. Hasil penelitian ini menunjukan bahwa: (1) mayoritas petani setuju bahwa pertanian padi sawah memberikan manfaat terkait dengan aspek ekonomi, sosial, dan lingkungan bagi keluarga petani; (2) Usahatani padi di Kecamatan Pamijahan menguntungkan dan layak untuk diusahakan; (3) faktor-faktor yang memengaruhi keputusan petani untuk tetap bertahan sebagai petani yaitu kategori pendapatan dari usaha pertanian, jumlah tanggungan keluarga, dan pengalaman bertani. Sementara, faktor-faktor yang memengaruhi keputusan petani untuk beralih profesi ke non petani yaitu kategori luas lahan pertanian dan kesempatan bekerja di sektor non petanian., Pamijahan District as the production center of the structures in Bogor Regency has experienced labor change problems and has experienced a decrease in the number of workers in the agricultural sector. This shift in professions could have an impact on decreasing rice production in the Pamijahan District. This study aims to: (1) analyze perceptions of paddy farmer’s on benefits of farming for farmer’s household; (2) analyze the income level of rice farming and (3) analyze the factors that influence farmer decission in stay as farmer or switching professions to non farmer’s in Pamijahan District. This study use likert scale method, income analysis, and binary logistic regression. The result showed that: (1) the majority of farmers agreed that rice field farming provides benefits to farmer’s household; (2) the rice farming in Pamijahan District is profitable because the R/C ratio for farm income over cash and total costs is greater than one and (3) factors that influence farmer’s decission to stay as farmer are income from agricultural business, number of family members and farming experience, meanwhile factors that influence farmer’s decission to switch professions to non farmer’s are agricultural land area and employment opportunities in non-agricultural sector.
Keyword: binary logistic regression, farmer’s decission, income analysis

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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