Judul: Adopsi program system of rice intensification teknik satu bibit per rumpun
Abstrak: One seedling per clump technique is one of the innovations to increase rice productivity which is environmentally friendly. The purpose of this study is to explore individual factors and innovation attributes relating to the innovation adoption decision of farmers to one seedling per clump technique on Purwasari village, Bogor District. Respondents were drawn at random by MS. Excel with the number 30. The results showed generally old aged farmers, rural landless, primary school graduates, had attended counseling, have organic and conventional farming experience, have interpersonal communication and behavioral characteristics not related to farmer adoption decisions one seedling per clump technique. The nature of innovation in the form of relative advantage, compatibility, complexity, trialability, and observability techniques associated with the adoption of one seedling per clump technique.
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Judul: Tingkat Persepsi dan Adopsi Petani Padi terhadap Penerapan System of Rice Intensification (SRI) di Desa Simarasok, Sumatera Barat
Abstrak: System of Rice Intensification or SRI is one of the methods in rice cultivation techniques. SRI is a rice cultivation practice that gives more attention to the conditions of better plant growth, especially in the root zone compared to traditional cultivation techniques. The aims of this study are to identify the perception and adoption level of farmers’ adoption in implementing SRI method and to analyze the factors that influence the adoption of SRI method. A questionnaire survey was conducted at Simarasok Village, Baso Sub-district, Agam District, West Sumatera to 35 farmers by purposive sampling. The data were processed by using logistic regression. The results showed that 57.1 percent of respondents had a good perception of the adoption of SRI while the remaining 42.9 percent had a bad perception. Meanwhile, the adoption rate of farmers was 51.4 percent of respondents have implemented the method in accordance with the guidelines of SRI and the remaining 48.6 percent have not yet. Logistic regression analysis showed that there were three variables that significantly affect the rate of SRI adoption which are farming experience, age and level of perception.
Keyword: Bogor Agricultural University (IPB), purposive sampling, rice cultivation, logistic regression analysis

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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