Judul: The criteria of land suitability for intensively managed cavendish banana crop in Way Kambas East Lampung
Abstrak: Banana as one of the pre-eminent products of horticultural crop has a very important role in the growth of agricultural sector in Indonesia. This research was aimed to find out the land characteristics that influence the Cavendish banana crop yield; to determine the correlation between the factors of land utilization type, soil sub-group, land slope, and land characteristics as well as the banana crop yield; to propose revised the criteria of land suitability classification for the land utilization type of Cavendish banana crop with intensive management which has been tested based on the production rate in the field; to propose some recommendations on the improvement of land management; and also to know the financial feasibility of Cavendish banana cultivation. For this purpose, there were 36 observation land units specifically designed by considering such factors as soil sub-group, land slope, land utilization type, and land productivity level. At each observation land unit, the land utilization type and land characteristics were indentified.
Keyword: land utilization type, land productivity level., soil sub-group, land characteristics, irrigation system employed

Judul: The Relationship between Land Characteristics and Horticultural Crop Productivity in Cemplang Village, Cibungbulang District, Bogor Regency
Abstrak: The Relationship between Land Characteristics and Horticultural Crop Productivity in Cemplang Village, Cibungbulang District, Bogor Regency. Supervised by Dr. Ir. Darmawan, M.Sc and Putri Oktariani, SP, M.Agr. Land characteristics can affect agricultural commodities. Land characteristics that are not in accordance with the conditions for growing a plant will result in low productivity of the plant. This is experienced by the Bakin and Berkah farmer group in Cemplang Village which has horticultural commodities of banana, corn, cucumber and eggplant. The productivity of these commodities has not been maximized, because the cultivation practices carried out have not been adapted to the characteristics of the land. Therefore, it is necessary to evaluate the land to identify the inhibiting factors that affect horticultural growth so that improvement efforts can be made to achieve maximum productivity. The research methods include soil morphology, laboratory analysis, soil classification, evaluation of land suitability and analysis of horticultural commodity farming. Land evaluation was carried out using the concept of land suitability according to the FAO framework (1976) based on the BBSDLP (2011) criteria with a matching technique. Based on the results of the study, it was found that the soil was categorized as Typic Hapludults family, smooth, sour, presumably kaolinitic, and isohyperthermic. Land suitability classes are S3-wa, nr, na for banana, corn, and cucumber commodities and S3-na for eggplant. Cultivation of corn, cucumber and eggplant commodities is efficient but economic value can be increased. In order to produce maximum productivity, other improvements to the land are needed such as N and K fertilization, increasing soil organic matter content, and fertilizing according to the doses required for each commodity.
Keyword: Banana, R/C ratio, Typic Hapludults

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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