TEKNIK PERTANIAN

The effort to search for alternative energy materials that do not compete with food and feed is necessary and urgent. Lignocellulosic biomass is one potential source of renewable energy. Scalinge up methodproduction of bioenergy production from laboratory scale to industrial scale needs to be studied and developed. The aim of this study is to find get scalinge up method o0f the bioethanol  production from corn cobs. An Eexperiments on scalinge up of bioethanol production from laboratory scale to industrial scale was is done by the Pg / V constant method (stirring power per volume). Scale up calculations based on data from fermented liquid rheological characteristics and specifications fermenters are used. The results showed that the calculation of basic scale up bioethanol production capacity bioreactor of 200 l, obtained working volume of 65% or 130 l, high of liquid fermentation  0.840 m, diameter tank bioreactor 0.441 m, diameter of a stirrer of turbine type of flat 0.187 m and t...

The domestic and export market of chrysanthemum cut-flower require a prime and consistent cuality. Meanwhile, manual grading system based on human vision resulting in quality inconsistentcy. The objective of this study was to develop computer program for quality evaluation of Yellow Fiji chysanthemum cut-flower using image processing. The cut-flowers were classified into different quality standards (AA,A.B.C) based on the steam length and straightness, and flower diameter. Then results indicated a strong relationship between quality parameters extracted from the image and those obtained from direct meaurement for grade AA,A,B and C with R 2 =0.98, R 2 =0.97, R 2 =0.97, and R 2 =0.98 respectively for length of stem. Also with R 2 =0.90, R 2 =0.87, R 2 =88, and R 2 =88 respectively for diamter of flower. The validation of the computer program for the quality evaluation of Yellow Fiji chrysanthemum cut-flower performed a hight a ccuracy of 100% for AA grade, 90% for A grade, 85% for B ...

Banana cv mas (Musa acuminata, L.) is one type of banana which is the superior fruit of Indonesia. Banana has the highest production among fruits in Indonesia. Besides having a delicious taste of banana cv mas kirana has a very interesting appearance, but the simultaneous ripened fruit in large numbers becomes an obstacle in its trade. Ethylene treatment is the primary choice to overcome the trade obstacles. The treatments given for banana fruit were: (i) The concentration of ethylene are 0, 100, 150 and 200 ppm with 24 hours of exposure duration; (ii) Temperature of ripening room (ripening chamber): ambient (25-30°C) and (15-20°C) with RH in the range 80 - 95% and CO2 observations / measurements performed periodically to keep the concentration not more than 1% in ripening room / chamber. Banana cv mas kirana look ripe simultaneously on ethylene treatment occurring on the fifth day in the room with ambient condition, while the skin color of banana control is still green. While the b...

It is very important to know the characteristics of candle nut before designing nut-deshelling machine. This study was conducted to investigate physical and mechanical characteristics of candle nut before analyzing the impact force on the de-shelling process. The result showed that average diameter of candle nut at intercept A (length), B (width) and C (thickness) were 32.55 mm, 29.05 mm and 23.23 mm respectively. The average value of sphericity and roundness of candle nut were 0.86 and 0.65 respectively. At high moisture content candle nut had a greater value of compressive strength and resulted a sticky kernel in the shell. Candle nut had 4.96% db moisture content after dried at sun drying for 20 hours. The value of compressive strength from the maximum load during a compression test (rupture force) of candle nut at this moisture content were 1,208 N, 1,198 N and 1,950 N for intercept A, B and C respectively. Abstrak Sangat penting untuk mengetahui karakteristik kemiri sebelum men...

This objective of this study was design and manufacture a simple drum compost reactor (composter) to be able to process organic waste into compost so as to reduce the problem of organic waste towards generation-z let’s go organic in the orphanage sinar indah cahaya bersama. The method used was engineering or modification, design research activities that are not routine so that contributions are generated in the form of processes and products. The result of the composter was vertical type aerobic composter drum without mixing system with parts up cover, composting room, filter, filter support posts, leachate chamber (liquid organic fertilizer), pipes and air vents covered with gauze, solid compost discharge holes and faucet dispensing liquid organic fertilizer.

Abstrak: Dalam pemenuhan kebutuhan hidupnya, manusia akan selalu menghasilkan produk akhir yang tidak digunakan kembali baik karena tidak lagi berguna maupun tidak memiliki manfaat bagi manusia tersebut. Produk-produk akhir tersebut sering sekali dikenal dengan sampah ataupun limbah. Kegiatan ini bertujuan memberikan pengetahuan dasar tentang pentingnya menjaga lingkungan terutama memilah sampah organik dan sampah anorganik. membuat mol dari bahan-bahan sederhana mampu, membuat pupuk kompos dari sampah organik dan menggunakan komposter. Penelitian dilaksanakan di LAPAS Kelas IIA Pancur Batu. Peserta pengabdian adalah 20 orang ibu-ibu darma wanita LAPAS Kelas IIA pancur Batu. Metode pelaksanaan dilakukan dengan penyuluhan. Hasil pengabdian adalah ibu-ibu darma wanita dapat membedakan sampah organik dan anorganik serta membuat mol dari bahan-bahan sederhana, membuat pupuk kompos dari sampah organik dan menggunakan komposter Abstract: To fulfill the needs of daily life, humans will alw...