Uji Penggunaan Beberapa Jenis Abu Terhadap Pertumbuhan Kelapa Sawit (Elaeis Guineensis Jacq.) Di Pembibitan Utama

Plant oil palm (Elaeis guineensis Jacq.) is one of plantation crop which plays an important role for Indonesia as a mainstay commodity for export and commodity that can increase farmers\u27 income results. Nurseries is the initial activity in the field that aims to prepare seedlings ready for planting. The research aims to determine the effect of some types ash on the growth of oil palm seedlings and determine the type of ash is best for growth of oil palm seedlings in the main nursery. Experimental research conducted at the Faculty of Agriculture University of Riau, from April to August 2015. This study uses a Completely Randomized Design (CRD) which consist of 6 treatments and 4 repeat, to obtain 24 units of trial. Treatment given, among others : without dust, ash oil palm empty bunch, ash of oil palm fruit shells, ash sawdust, ash rice husk and ash rice straw. Data were analyzed using ANOVA and continued with further test Duncan\u27s New Multiple Range Test (DNMRT) at 5%. Research that has been carried out showed that giving some kind of as in oil palm seedlings show the real effect of the parameters on the increase in diameter hump and dry weight of seedlings, but the effect not real of the parameters as heigh of seedlings, increase the number of leave, root volume and ratio crown roots. Treatments sawdust ash and ash oil palm empty bunch showed better results for the growth of iol palm seedlings

Fluks Co2 pada Berbagai Kondisi Hutan Rawa Gambut di Areal Konsesi PT. Diamond Raya Timber Kecamatan Bangko Kabupaten Rokan Hilir

This research was titled CO2 flux in various conditions of peat swamp forest in the concession area of PT. Diamond Raya Timber districtBangko of Rokan Hilir.CO2 flux is the amount of carbon dioxide of gas released by the plants, either from the air or from the plant into the air as a certain expansion of the plant per unit time. Peat swamp forest is a natural resource in which is very important, one of the benefits is which it can control and absorb carbon dioxide in the air. The Factors which affect the release of CO2 into the air flux is microclimate including air temperature , soil temperature and moisture . The purpose of this study was to be determined the amount of CO2 emitted flux on various conditions including peat swamp forests, undisturbed forest, logged and vacant land. This research has been done using purposive random sampling method. These results indicate that the average CO2 flux on peat swamp forests are still natural (intact) is smaller than the logged peat swamp forest and vacant land. As the result general there is no correlation between soil temperature and humidity on the release of CO2 flux that undisturbed forest , in the logged and vacant land. CO2 flux in undisturbed forest and logged derived from plant respiration and activity of soil biota , while the vacant land CO2 fluxes derived from the respiration of soil biota

Pertumbuhan Tanaman Kelapa Sawit (Elaeis Guineensis Jacq.) Pada Media Campuran Gambut Dengan Effluent Di Pembibitan Utama

This research aimed to observe the effect of deposited effluent application on land application in the peat medium on growth of palm oil seedlings in the main nursery. The research was conducted at the experimental field of the Faculty of Agriculture, University of Riau, Jl. Bina Widya km 12.5 Simpang Baru Villae, Tampan District, Municipality of Pekanbaru. The experiment was conducted for 3 months, starts from February to April 2013. The research was conducted as experiments using Completely Randomized Design (CRD) non-factorial that consisting of 5 treatments and 3 replications. To see the differences between treatments tested Duncan New Multiple Range Test (DNMRT) at the 5% level. Parameters were observed are increased seedling height, increased leaf number, increased diameter stump, root volume, dry weight ratio of roots and canopies of palm oil seedlings. Result of research have shown that effluent application with various doses significantly affected all parameters

Uji Efektivitas Mimba (Azadirachta Indica a. Juss) Dan Pemberian Nitrogen Terhadap Pelindian Nitrogen Dan Pertumbuhan Tanaman Jagung Manis (Zea Mays Saccharata Sturt) Pada Tanah Gambut

This research aims to find out the effectiveness of Neem and the application of Nitrogen to nitrogen leaching and sweet corn growth on peat soil. This research has been conducted in gauze house of Technical Implementation Unit (TIU) experimental station and analysis of leachate water has been conducted in Laboratory of Soil Science, Faculty of Agriculture, University of Riau, Pekanbaru. The research was held from October 2014 until January 2015. This research is factorial experiment and prepared in Completely Randomized Design (CRD) that consisted of 2 factors, which are nitrogen (N) application which is without nitrogen and with nitrogen 3,75g/column, and the second factor is Neem (M), which is without neem, 0,37g/column, 0,56g/column, 0,75g/column. The data that were obtained from research results were analyze statistically by analysis of variance (ANOVA). The result of ANOVA further were tested using Duncan's multiple range test 5% significant level. The results of this research show that the application of neem until 0,75g/column dosage is not effective in decreasing nitrogen leaching on peat soil. The application of nitrogen on peat soil increases ammonium on leachate water on fourth week, but not on second and sixth week, while, on nitrat of leachate is significantly different compare to without application of nitrogen. The application of neem until 0,75g/column dosage and nitrogen 3,75g/column does not increase the growth of plant

Development of Hot Equal Channel Angular Processing (ECAP) consolidation technique in the production of Boron Carbide(B4C)-Reinforced Aluminium Chip (AA6061)-based composite

The production of metal matrix composites (MMCs) through recycled materials is a cost-saving process. However, the improvement of the mechanical and physical properties is another challenge to be concerned. In this study, recycled aluminium 6061 (AA6061) chips reinforced with different volumetric fractions of boron carbide (B4C) were produced through hot equal channel angular processing (ECAP). Response surface methodology (RSM) was carried out to investigate the dependent response (compressive strength) with independent parameters such as different volumetric fractions (5-15%) of added contents of B4C and preheating temperature (450 – 550°C). Also, the number of passes were examined to check the effect on the mechanical and physical properties of the developed recycled AA6061/B4C composite. The results show that maximum compressive strength and hardness of recycled AA6061/B4C were 59.2 MPa and 69 HV respectively at 5% of B4C contents. Likewise, the density and number of pores increased, which were confirmed through scanning electron microscope (SEM) and atomic force microscopes (AFM) analysis. However, the number of passes enhanced the mechanical and physical properties of the recycled AA6061/B4C composite. Therefore, the maximum compressive strength and hardness achieved were 158 MPa and 74.95 HV for the 4th pass. Moreover, the physical properties of recycled AA6061/B4C composite become denser of 2.62 g/cm3 at the 1st pass and 2.67 g/cm3 for the 4th pass. Thus, it can be concluded that the B4C volumetric fraction and number of passes have a significant effect on recycled AA6061 chips

Modulated Entanglement Evolution Via Correlated Noises

We study entanglement dynamics in the presence of correlated environmental noises. Specifically, we investigate the quantum entanglement dynamics of two spins in the presence of correlated classical white noises, deriving Markov master equation and obtaining explicit solutions for several interesting classes of initial states including Bell states and X form density matrices. We show how entanglement can be enhanced or reduced by the correlation between the two participating noises.Comment: 9 pages, 4 figures. To be published in Quantum Information Processing, special issue on Quantum Decoherence and Entanglemen