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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology JERAMI Indonesian Journal of Crop Science
Susiyanti Susiyanti
University of Sultan Ageng Tirtayasa
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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THE PHYSICOCHEMICAL PROPERTIES OF SEVERAL INDONESIAN RICE VARIETIES Susiyanti Susiyanti; Rusmana Rusmana; Yeyen Maryani; Sjaifuddin Sjaifuddin; Nanang Krisdianto; Mohamad Ana Syabana
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 27 No. 1 (2020)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2020.27.1.1030

Abstract

Rice has different varieties, with each variety possessing diverse physical and chemical characteristics. The objective of this study was to analyze the physicochemical properties of several Indonesian local rice varieties. The experiment was conducted from March to April 2017 at the Agriculture Applied Technology Laboratory of Agriculture Faculty, Universitas Sultan Ageng Tirtayasa and at the Laboratory of Food Analysis Services in the Food and Technology Department of IPB University. Nine local rice varieties from several areas in Indonesia were used as samples, namely; Jalahawara, Ciherang, Pandan Wangi, Rojolele, Sokan, Bendang Pulau, Batang Piaman, Cisantana, and Sidrap. Their physicochemical characteristics were analyzed based on some criteria such as: physical quality (weight, length, width, form, and percentage of chalkiness), and chemical content, water content, ash content, fat content, protein content, carbohydrate content, crude fiber content, starch, amylose, and amylopectin content. Data obtained were analyzed by one-way ANOVA using a Randomized Block Design. Jalahawara has the highest percentage of chalkiness.  Based on the ratio of length and width, Sidrap and Ciherang were categorized as medium type and the others were oval/round. The heaviest and lightest based on  the 1000-grain weight of rice were Ciherang and Bendang Pulau, respectively. The water content was about 2-4% for all samples. The highest and lowest amount of ash and fat content were found in Sidrap and Sokan, respectively.  The highest and lowest amount of protein content were found in Batang Piaman and Sokan, respectively. The highest and lowest  starch content were observed in Pandan Wangi and Ciherang. The content of amylose and amylopectin were highest in Batang Piaman. The rice samples were categorized into two groups of low and medium levels of amylose. The low level of amylose were observed in Cisantana, Ciherang, Pandan Wangi and Sidrap, and the medium level of amylose were observed in Jalahawara, Sokan, Bendang Pulau, Batang Piaman, and Rojolele.
The Effect Of Dosing Potash Fertilizer And Compost Doses Of Empty Bunches Of Oil Palm (Tkks) On The Growth Of Citronella Plants (Cymbopogon Nardus L.) Abdul Hasyim Sodiq; Karina Dieta Sheren; Andi Apriany Fatmawaty; Susiyanti Susiyanti
JERAMI : Indonesian Journal of Crop Science Vol 5 No 2 (2023): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.5.2.1-15.2023

Abstract

Citronella is a biopharmaceutical plant that has the main content of citronella and geraniol as raw materials in the manufacture of essential oils (citronella oil) which have high economic value. The production of citronella increases every year although the amount is still small when compared to the production of other biopharmaceutical plants. So it is necessary to increase the productivity of citronella plants with the use of the right dose of fertilizer. This study aims to determine the effect of potassium fertilizer dose and Compost Dose of Empty Palm Oil Bunches (EFB) on the growth of citronella (Cymbopogon nardus L.). The research was started in February-June 2022 at Balai Pengkajian Teknologi Pertanian (BPTP) Banten, Ciruas District, Serang Regency, Banten and the Laboratory of the Department of Agroecotechnology, Faculty of Agriculture, Sultan Ageng Tirtayasa University. This study used a Randomized Block Design (RBD) method which consisted of two factors, namely potassium fertilizer dose and Compost Dose of Empty Palm Oil Bunches (EFB). The first factor has 4 levels, 0 kg/ha potassium (K0), 15 kg/ha (K1), 30 kg/ha (K2) and 45 kg/ha (K3). The second factor has 4 levels, 0 tons/ha (T0), 20 tons/ha (T1), 30 tons/ha (T2) and 40 tons/ha (T3). There were 16 treatment combinations with 3 replications so 48 experimental units were obtained. Each experimental unit contained 2 polybags where each polybag contained 2 plants, so the total plants in the study were 192 plants. The results showed that the dose of potassium fertilizer 30 kg/ha gave the best results on plant height parameters at the age of 3, 4, 5, 6 WAP, the dose of potassium fertilizer 15 kg/ha gave the best results on the number of leaves aged 1 WAP. Dosage of 40 tons/ha of TKKS compost gave the best results on the number of leaves aged 5 and 6 WAP. There was no interaction between the dose of potassium fertilizer and the dose of TKKS compost on all parameters at the age of 1-12 WAP
Co-Authors Abdul Hasyim Sodiq Andi Apriany Fatmawaty Karina Dieta Sheren Mohamad Ana Syabana Nanang Krisdianto Rusmana Rusmana Sjaifuddin Sjaifuddin Yeyen Maryani