Judul: The Differences in Rice Farming Income with Irrigation and Non-Irrigation Systems in West Java Province
Abstrak: Irigasi merupakan bagian dari intensifikasi atau perbaikan teknologi untuk meningkatkan produktivitas dan produksi padi agar petani memperoleh pendapatan yang lebih besar. Penelitian ini bertujuan untuk menganalisis pendapatan petani dengan sistem irigasi dan non irigasi serta perbedaan pendapatan petani padi dengan sistem irigasi dan non irigasi di Provinsi Jawa Barat. Penelitian ini menggunakan data sekunder Sensus Pertanian 2013 (ST2013): Survei Rumah Tangga Usaha Tanaman Padi Tahun 2014 oleh Badan Pusat Statistik (BPS) dengan jumlah responden 7854 petani. Metode pengolahan dan analisis data yang digunakan adalah analisis pendapatan usahatani dan uji beda Mann-Whitney. Hasil penelitian menunjukan pada usahatani lahan irigasi pendapatan atas biaya total yang didapat adalah Rp 5.285.384,60 dan pada usahatani padi lahan non irigasi lebih kecil yaitu sebesar Rp 307.539,03. Nilai p-value pendapatan atas biaya total adalah 0,188 sehingga tidak terdapat perbedaan nyata antara pendapatan usahatani padi dengan sistem irigasi dan non irigasi karena nilai tersebut lebih besar dari alfa yaitu 0,05., Irrigation is part of the intensification or improvement of technology to increase rice productivity and production so that farmers earn higher income. This study aims to analyze farmer's income with irrigation and non-irrigation systems and the difference in rice farming income with irrigation and non-irrigation systems in West Java Province. This study used secondary data from the Sensus Pertanian 2013 (ST2013): Survei Rumah Tangga Usaha Tanaman Padi Tahun 2014 by Badan Pusat Statistik (BPS) with 7854 farmers as respondents. The data processing and analysis methods used were farm income analysis and the Mann-Whitney test. The results showed that in irrigated land farming, the income from total cost was Rp 5.285.384,60; in non-irrigated land farming, it was smaller, Rp 307.539,03. The p-value of income over total cost is 0.188, so there is no statistically significant difference between the income of rice farming with irrigation and non-irrigation systems because this value is higher than alfa 0.05.
Keyword: farming analysis, farm income, irrigation, rice farming

Judul: Comparison of Rice Farming Income in Banten Province
Abstrak: Beras masih menjadi makanan pokok bagi sebagian besar penduduk di Indonesia. Padi sebagai penghasil beras memiliki peran penting dalam memenuhi kebutuhan bahan pangan pokok ini. Padi merupakan komoditas tanaman pangan dengan jumlah produksi tertinggi di Indonesia. Berdasarkan tipe lahan padi terbagi menjadi padi sawah dan padi ladang. Provinsi Banten termasuk dalam 10 provinsi dengan hasil produksi padi terbesar di Indonesia. Data yang digunakan pada penelitian ini adalah data sekunder yang berasal dari Badan Pusat Statistik (BPS) melalui Sensus Pertanian 2013: Suvei Rumah Tangga Usaha Tanaman Pangan Tahun 2014. Jumlah sampel petani padi adalah 3.641 petani. Metode penelitian yang digunakan pada penelitian ini yaitu analisis biaya, penerimaan, pendapatan, R/C ratio, dan produktivitas modal (π/C) usahatani padi ladang dan padi sawah. Komponen biaya tunai terbesar adalah biaya pupuk sedangkan pada biaya non tunai adalah biaya tenaga kerja dalam keluarga (TKDK). Pendapatan usahatani padi ladang dan padi sawah atas biaya tunai maupun atas biaya total bernilai lebih dari 1. Nilai produktivitas modal atas biaya total usahatani padi ladang bernilai 0,33 sedangkan padi sawah bernilai 0,02., Rice is still the staple food for most of the population in Indonesia. Paddy as a producer of rice has an important role in meeting the needs of this staple food. Rice is a food crop commodity with the highest amount of production in Indonesia. Based on the type of land, paddy is divided into lowland rice and upland rice. Banten Province is included in the 10 provinces with the largest rice production in Indonesia. The data used in this study is secondary data originating from the Central Statistics Agency (BPS) through the 2013 Agricultural Census: Survey of Food Crops Business Households in 2014. The number of samples of rice farmers is 3,641 farmers. The research method used in this study is the analysis of costs, revenues, income, R/C ratio, and capital productivity (π/C) of field paddy and lowland paddy farming. The largest cash cost component is the cost of non-cash costs is labor in the family (TKDK). Farming income for upland rice and lowland rice for cash costs as well as for total costs is worth more than 1. The productivity value for upland rice produces a value of 0.33 and lowland rice was 0.02.
Keyword: Usahatani padi ladang, Usahatani padi sawah, pendapatan, Efisiensi

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.
Keyword: