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All Journal Jurnal Ilmu Pertanian Journal La Lifesci Journal of Applied Agricultural Science and Technology
Meliala, Susan Barbara Patricia Sembiring
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Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Environmental Science Immunology & microbiology

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Response of mineral formulation towards different growth phases of arabica coffee in lowland Wulanjari, Distiana; Wijaya, Ketut Anom; Rosyady, Muhammad Ghufron; Suwardiyanto, Suwardiyanto; Meliala, Susan Barbara Patricia Sembiring; Setiyono, Setiyono; Farisi, Oria Alit
Jurnal Ilmu Pertanian Vol 9, No 1 (2024): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.76043

Abstract

Arabica coffee cultivation is limited by altitude, which affects its production. Some farmers in Jember Regency are innovating to grow arabica coffee in the lowland, but the potential for leaf rust disease is quite high. Plant natural resistance can be enhanced by adding minerals formulation (containing silica, iodine, and calcium). This research aimed to determine which phase is more effective for applying mineral formulation that induces plant resistance. The formulation was tested on arabica coffee plants grown at the lowland (460 masl) in Jember Regency on 12 years old (y.o) mature and 1 y.o immature plants. One formulation was dissolved in 14 L of water and applied by foliar feeding. The effect was analyzed using two-way T-test of two samples assuming unequal variances at 95% confidence level to determine the differences. The analysis showed that the plants supplemented with the formulation could increase the variables that supported the natural resistance of plants (both mechanically and through the production of chemical compounds), such as polyphenol content, flavonoids, antioxidant activity, total dissolved protein, vitamin C, reducing sugar, lignin, cellulose, hemicellulose, and iodine content in the plant. The response of the formulation application showed that the most resistance variables was better in 1 y.o immature plants than in 12 y.o mature plants. The application of mineral formulation in immature phase will have a better impact on increasing natural resistance, and it has the potential to be used as a supplement for arabica coffee plants cultivated in the lowland.
Physical and Chemical Characteristics of Chosen Genotype of Robusta Coffee from Curahpoh Village Bondowoso East Java Meliala, Susan Barbara Patricia Sembiring; Setiyono, Setiyono; Savitri, Dyah Ayu; Arum, Ayu Puspita; Hidayah, Satria Nurul Hidayah; Noviana, Sulfi
Journal La Lifesci Vol. 5 No. 4 (2024): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v5i4.1338

Abstract

The identity of coffee is significant for consumers mostly in relation to the characteristics of the end result product taste and quality. Robusta coffee varieties are widely grown by farmers in Bondowoso Regency in east Java, Indonesia using planting materials of unknown origin. The objective of this work was to identify the physical and chemical occurrence of Robusta cherries harvested from seven chosen genotypes grown in Curahpoh Village, Bondowoso. Samples of Robusta coffee cherries of seven selected genotype plants were harvested from Curahpoh Village, Bondowoso at three levels of maturity. Some physical and chemical factors were assessed as follows: sphericity, bean density, weight per bean, moisture content, total dissolved solids, to elicit differences in the genotypes. Analyzing the results obtained, the authors pointed to rather serious differences in these characteristics between various genotypes. The sphericity of fresh coffee fruits ranged from 0.82 to 0.93, with average density values between 1.00 and 1.11 g/cm³. The moisture content of green beans varied widely from 4.46% to 22.79%, while total dissolved solids ranged from 2.67% to 5.27%. These studies suggest the possibilities of genotypes selection in order to produce a superior genotype that would improve the quality as well as the marketability of Bondowoso Robusta coffee. These data contribute to the enhancement of the current agricultural practices, and the proposal of new varieties of coffee adapted to the specifics of their environment.
The Effect of Immersion Concentration of Coconut Water and Dosage of NPK Fertilization on Growth and Yield of Peanut (Arachis hypogeae L.) Okti, Reski Dwi; Setiyono, Setiyono; Sholikhah, Ummi; Purnamasari, Ika; Meliala, Susan Barbara Patricia Sembiring; Savitri, Dyah Ayu; Arum, Ayu Puspita
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.169

Abstract

One problem of peanut cultivation is the inability of peanut seeds to be stored long-term. Prolonged storage of seed peanuts causes seed deterioration due to seeds losing reserves of food and nutrient that cause the seeds difficult to germinate. As well as other problems, namely Nitrogen, Phosphorus and Potassium fertilization which has not been based on plant needs, fertilizer application tends to be excessive. The purpose of this study is to know the interaction and the main effect of the concentration treatment of coconut water immersion and NPK fertilization doses. This study used a factorial randomized block design with three replications. The first factor was the immersion concentration of coconut water (A) which consisted of 3 levels, namely: 0% coconut water (A1), 15% coconut water (A2), and 30% coconut water (A3) and the second factor was the dose of NPK fertilization (B) consisting of 4 levels, namely: NPK 0 g/plot (B1), NPK 22.5 g/plot (150 kg/ha) (B2), 45 g/plot (300 kg/ha) (B3), and NPK 67.5 g/plot (450 kg/ha) (B4). The results showed that (1) there was a significant interaction only on the number of primary branches with the applied treatment, 15% coconut water immersion concentration and NPK fertilization dose of 22.5 grams/plot (A2B2) (7.7 branches). (2) Concentration immersion in coconut water significantly affected the percentage of pithy pods, the percentage of empty pods, and the weight of 100 seeds, with the best treatment being the concentration of 15% coconut water immersion (A2). (3) Dose of NPK fertilization factor had a significant effect on harvesting age, percentage of empty pods, wet pod weight and productivity with the best treatment of 67.5 gram/plot NPK fertilization (B4).
Chemical and Microbiological Characteristics of Kombucha Beverage Produced from Robusta and Arabica Coffee with Varied Roasting Profiles Savitri, Dyah Ayu; Setiyono, Setiyono; Meliala, Susan Barbara Patricia Sembiring; Arum, Ayu Puspita; Novijanto, Noer; Herliani, Canserlita Puteri
Journal of Applied Agricultural Science and Technology Vol. 8 No. 3 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i3.286

Abstract

Kombucha is a fermented beverage product often produced by adding kombucha culture into sweetened tea, juices, coffee, and herb extracts. Coffee is a refreshing ingredient commonly served as a beverage prepared from roasted coffee beans. Therefore, this study aimed to investigate the chemical and microbiological characteristics of kombucha beverage produced from robusta and arabica coffee through natural methods with light, medium, and dark roasting profiles. Ground-roasted robusta and arabica coffee were dissolved into a sucrose solution, then the kombucha culture was added to these treatments and fermented for 14 days at ambient temperature. Subsequently, each kombucha beverage was analyzed for Total Soluble Solid (TSS), pH, Total Titrated Acid (TTA), Soluble Vitamin C, Caffeine Content, and Total Lactic Acid Bacteria (LAB). The results showed that TSS decreased on the 14th day due to sucrose degradation by microbes. TTA increased at the end of the processing, followed by a lower pH (2.87–3.49), signifying a safe value for human consumption. The soluble Vitamin C increased on the seventh day and decreased on the 14th day, which was related to the oxidation process during fermentation. The monoanion of ascorbic acid became oxidized by oxygen molecules and formed other unstable compounds. The total LAB and caffeine content elevated along with fermentation time due to the caffeine solubility which increased in low pH solution.
Co-Authors Arum, Ayu Puspita Dyah Ayu Savitri Farisi, Oria Alit Herliani, Canserlita Puteri Hidayah, Satria Nurul Hidayah Ika Purnamasari Ketut Anom Wijaya Noer Novijanto Noviana, Sulfi Okti, Reski Dwi Rosyady, Muhammad Ghufron Setiyono Setiyono Suwardiyanto Suwardiyanto Ummi Sholikhah Wulanjari, Distiana