Judul: Peran Kelompok Tani terhadap Pendapatan Usahatani Bawang Putih di Tiga Sentra Produksi di Indonesia
Abstrak: Dalam upaya mewujudkan swasembada bawang putih, pemerintah telah melakukan upaya berupa pemberian input produksi dan pembentukan kelompok tani. Namun, petani cenderung melakukan usahatani secara individu sehingga program-program yang dibuat belum tersalurkan secara merata dan menyebabkan perbedaan biaya produksi dan pendapatan antara petani anggota dan bukan anggota kelompok tani. Oleh karena itu, penelitian ini bertujuan untuk menganalisis peran keanggotaan kelompok tani terhadap pendapatan usahatani bawang putih. Data yang digunakan adalah data sekunder dari Sensus Pertanian 2013 yaitu data Survei Rumah Tangga Usaha Tanaman Hortikultura tahun 2014. Pengolahan data dilakukan secara kualitatif dan kuantitatif. Analisis data kualitatif dengan metode deskriptif dan kuantitatif dengan analisis pendapatan serta Propensity Score Matching. Hasil penelitian menunjukkan bahwa kelompok tani belum mampu berperan positif terhadap pendapatan usahatani bawang putih. Rata-rata pendapatan, penerimaan, produktivitas, serta biaya total per tahun per hektar yang diperoleh petani anggota kelompok tani masih lebih rendah dibandingkan petani yang bukan anggota kelompok tani. Hal tersebut mengindikasikan bahwa fungsi kelompok tani belum berjalan sepenuhnya secara optimal., In order to be self-sufficient in garlic production, the government provides programs such as input subsidies and develop farmer groups. However, farmers tend to do farming individually so that assistance in efforts to be self-sufficient has not been distributed evenly, which will lead to differences in production costs and income between farmer members and non-members of farmer groups. Therefore, this study aims to analyze the impact of farmer group membership on garlic farm income. The data used is secondary data from the 2013 Agricultural Census, namely the 2014 Horticultural Plant Household Survey data. Data processing was carried out qualitatively and quantitatively. Qualitative data analysis with descriptive and quantitative methods with income analysis and Propensity Score Matching. The result shows that farmer group has not capable yet to increase garlic farming income. The average of total income, productivity level, as well as total cost per year per hectare obtained by farmers who are members of farmer groups is lesser than farmers who are not members of farmer group. Hence, it indicates that the function of farmer group is not running optimally yet as it should.
Keyword: farmer group, garlic, farm income, propensity score matching

Judul: The Impact of Farmer Group Membership on Indonesia’s Chili Farming Income, The Impact of Farmer Group Membership on Indonesia’s Chili Farming Income
Abstrak: Cabai rawit merupakan salah satu komoditas strategis nasional, namun memiliki risiko harga yang tinggi dan produksinya fluktuatif. Sebagai akibatnya pendapatan petani cabai rawit juga bersifat fluktuatif. Kelompok tani menjadi salah satu upaya untuk menghadapi risiko tersebut. Mengingat kelompok tani berfungsi sebagai kelas belajar, wahana kerja, serta unit produksi bagi petani. Penelitian ini bertujuan untuk menganalisis dampak keanggotaan kelompok tani terhadap pendapatan usahatani cabai rawit. Data yang digunakan adalah data sekunder dari Survei Rumah Tangga Usaha Tanaman Hortikultura Tahun 2014 dengan jumlah 18.049 rumah tangga usahatani. Pengolahan data dilakukan secara kuantitatif, melalui metode deskriptif dan propensity score matching (PSM). Hasil penelitian menunjukkan bahwa penerimaan, biaya, dan pendapatan petani cabai rawit anggota kelompok tani lebih tinggi dibandingkan petani yang bukan anggota kelompok tani. Keanggotaan kelompok tani berpengaruh terhadap peningkatan biaya dan berpengaruh positif signifikan terhadap penerimaan dan pendapatan petani., Cayenne pepper, one of the national strategic commodities has fluctuating price and production risks. As a result, income of cayenne pepper farmers is also fluctuating. Farmer groups which function as learning classes, work platforms, and production units for farmers are few of many efforts to deal with the issue mentioned. This research aims to analyze the impact of farmer group membership on the cayenne pepper farming income. The data used is secondary data from Horticultural Crop Household Survey 2014 with total of 18.049 households. The data processing is carried out qualitatively and quantitatively. Qualitative data analysis using descriptive and quantitative methods using propensity score matching (PSM). Study results showed farmers who are farmer group members have higher incomes, costs, and revenues compared to farmers who are not farmer group members. Farmer groups membership impact on higher costs as well as significant positive effect towards farmer’s incomes and revenues.
Keyword: cayenne pepper, farmer group, farmer’s income, propensity score matching

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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