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All Journal JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan Jurnal Agro Industri Perkebunan
Rijadi Subiantoro
Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry Public Health

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Pengaruh Kombinasi Media Lapisan Tanah dan Takaran Cocopeat pada Pertumbuhan Bibit Kakao (Theobroma cacao L.) Eko Saputra; Rijadi Subiantoro; Adryade Reshi Gusta
Jurnal Agro Industri Perkebunan Volume 7 No. 1, Mei 2019
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v7i1.1051

Abstract

Efforts to produce good quality cocoa seedling in quality and quantity, ie the use of planting media containing nutrients needed by plants. Topsoil and cocopeat combination are expected to increase the growth of cocoa seedling. The purpose of this study was to to obtain a good soil layer medium planting on the growth of cocoa seedling, to obtain optimum cocopeat on the growth of cocoa seedling, and to obtain the interaction of soil layer medium planting and cocopeat on the growth of cocoa seedlings. This research was conducted in Politeknik  Negeri Lampung’s Teaching Farm in January 2017 until June 2017. The experiment was conducted by factorial randomized block design with two factors and each treatment combination was repeated 3 times. The first factor consists of two levels and the second factor consists of four levels. The first factor, namely top soil and sub soil. The second factor is composting cocopeat on planting medium consisting of 0% cocopeat and 100% soil, 25% cocopeat and 75% soil, 50% cocopeat and 50% soil, 75% cocopeat and 25% soil. The results showed that the cocopeat 0%-75% gave the same effect on the high varieties of seedlings, stem diameter, number of leaves, total dry weight, and dry root weight. In general, top soil and sub soil medium planting did not affected on the growth of cocoa seedling and cocopeat did not affected on the growth of cocoa seedling. There was no interaction between media layer of soil and cocopeat in all observation variables. 
Pengaruh Kombinasi Jenis Pupuk Kandang dan Tingkat Kehalusan Zeolite pada Pertumbuhan Bibit Kakao (Theobroma cacao L.) Ayu Mega Parama; Rijadi Subiantoro; Fatahillah Fatahillah
Jurnal Agro Industri Perkebunan Volume 8 No. 1, Mei 2020
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v8i1.1053

Abstract

Providing manure can not only increase the availability of nutrients but also support the growth of microorganisms. Zeolite has a high CEC, which results in the media being able to bind water and nutrients added to the soil. This study aims to get the best type of manure on cocoa seedling growth, get the effect of zeolite smoothness on the growth of cocoa seedlings, and find out the interaction of the composition of manure and zeolite on the growth of cocoa seedlings. The research was conducted at Experimental Garden of Politeknik Negeri Lampung, from December 2017 to May 2018. The method used was the factorial pattern randomized block design (RBD) which consisted of two factors. The first factor consists of three levels, namely without manure, 200 g chicken manure, and 200 g goat manure. The second factor consisted of three levels, namely zeolite size (without zeolite, zeolite size 30 mesh, and zeolite size 16 mesh). Observation variables were plant height, leaves number, stem diameter, shoot dry weight, soil pH, and soil CEC. The results showed that manure did not show an effect on plant height, stem diameter, and leaves number, but had an effect on soil pH and soil CEC. The level of zeolite smoothness does not affect plant height, stem diameter, leaves number, and soil pH, but affects soil CEC the 16 mesh size of compared to 30 mesh size. There is no interaction on types of manure and size of zeolite fineness of plant height, stem diameter, leaves number, shoot dry weight, soil soil pH, and soil CEC.
Respons Pertumbuhan Bibit Kakao (Theobroma cacao L.) terhadap Pemberian Dosis Slurry pada Ultisols Hajimena Lurfhia Haida Hakim; Rijadi Subiantoro; Fatahillah Fatahillah
Jurnal Agro Industri Perkebunan Volume 7 No. 2, Oktober 2019
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v7i2.1063

Abstract

This study aims to obtain the best slurry dosage for the growth of cocoa seedlings. This reaserch was conducted in the experimental garden, chemical analyzed laboratory, and soil laboratory of Politeknik Negeri Lampung on November 2017 until March 2018. The method used was a Completely Randomized Design (CRD) with 6 doses of slurry (0 ml, 80 ml, 160 ml, 240 ml, 320 ml, and 400 ml). Observation variables in the form of premilinary observations abd observations during the study. Preliminary observations analyzed the levels of N, P, K, pH, and C-Organic on topsoil and slurry. Obsevation during the study were plant height, stem diameter, number of leaves, dry weight of shoot dry weight, root dry weight, and moisture content. The results showed that slurry doses did not affect on the cocoa seedling growth.
Pengaruh Penggunaan Berbagai Koagulan Kimia Pada Limbah Cair Kelapa Sawit (Elaeis guineensis Jacq.) Terhadap Penurunan Beban Pencemar Imam Fatoni; Rijadi Subiantoro; Maryanti Maryanti
JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan Vol 17, No 2 (2020): Jurnal Kesehatan Lingkungan Volume 17 No. 2, Juli 2020
Publisher : Poltekkes Kemenkes Banjarmasin Jurusan Kesehatan Lingkungan Banjarbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.665 KB) | DOI: 10.31964/jkl.v17i2.216

Abstract

Oil palm (Elaeis guineensis Jacq.) Is a type of plantation that is Indonesia's mainstay commodity with rapid development. Palm oil industry wastewater comes from a variety of palm oil processing processes that contain high organic and inorganic materials. The resulting waste must be controlled and treated so that it does not pose a threat to the palm oil industry because it can pollute the environment and sources of disease. One method of processing palm oil liquid waste that can be used is coagulation. The coagulation process requires a coagulant, the coagulant used is aluminum sulfate, ferrous sulfate, ferric chloride. This study aims to obtain the type and dose of chemical coagulants that are effective in handling palm oil industry liquid waste in anaerobic ponds and determine the reduction of pollutant variables (COD, TSS, Turbdity, color, and pH changes) due to the treatment of coagulant treatment. This study used a Randomized Group Design (RBD) with 10 levels of treatment consisting of B0 (Non-coagulant), B1 (Al2 (SO4)3 1 g/L), B2 (Al2 (SO4)3 1,5 g/L), B3 (Al2 (SO4)3 2 g/L), B4 (FeSO47H2O 1 g/L), B5 (FeSO47H2O 1,5 g/L), B6 (FeSO47H2O 2 g/L), B7 (FeCl36H2O 1 g/L), B8 (FeCl36H2O 1,5 g/L), B9 (FeCl36H2O 1 g/L). Data were analyzed by analysis of variance (ANOVA) and a 5% LSD test. The results obtained are ferric chloride being the best coagulant to reduce polluted parameters in palm oil liquid waste and Ferri chloride 2 g/L is the best treatment for reducing pollutant parameters of COD, TSS, Turbidity, and Color. Whereas the best pH reduction in aluminum sulfate 1 g/L coagulant.
Co-Authors Adryade Reshi Gusta Ayu Mega Parama Eko Saputra Fatahillah Fatahillah Imam Fatoni Lurfhia Haida Hakim maryanti, Maryanti