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Jurnal Sains Teh dan Kina
Published by Pusat Penelitian Teh dan Kina
ISSN : -     EISSN : 29622034     DOI : -
Core Subject : Science, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Penelitian Teh dan Kina is a national journal providing rapid publication of peer-reviewed articles concerned with tea and cinchona commodities based on the aspects, agronomy, plant breeding, soil science, crop protection, postharvest technology and social economy. Papers dealing with result of original research on the above aspects are welcomed with no page charge.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 226 Documents
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Variability and early selection for tea plant population derived from artificial crossings Khomaeni, Heri Syahrian; Sriyadi, Bambang
Jurnal Penelitian Teh dan Kina Vol 14, No 2 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (583.394 KB) | DOI: 10.22302/pptk.jur.jptk.v14i2.13

Abstract

The purpose of tea breeding is to develope new elite clones. Artificial crossings is the method for developing a new population with high genetic variability in respective traits followed by selection process. Genetic variability information is important in selection method. A hundred and five F1 plants were planted in 1991. These F1 plant were selected from F1 generations of several parental cross combinations between PS 1, PS 354, TRI 777, TRI 2024, TRI 2025, Kiara 8, KP 4, and Cin 143. The crosses were made in 1989. Observed variables were yield per bush, number of pekoe, number of dormant shoot (banji), weight of p+3 (pekoe with three leafs below), weight of p+2 (pekoe with two leafs below), and weight of banji. Phenotypic variance and standard deviation were made. The level of variability of all characters were evaluated. All plants with performance level greater than general mean plus one and a half standard deviation were selected for respective traits. Results showed that yield per bush, number of pekoe, and number of banji had wide variability. The variability of p+3, p+2, and banji had narrow variability. Eight bushes were selected with yield potential ranging from 4,290 kg/ha/year and 6,261 kg/ha/year.
Synthesis of quinine N-oxide and an NMR tutorial in its structure determination Aisyah, Aisyah; Tamaela, Nila Berghuis; Santoso, Joko; Syah, Yana Maolana; Mujahidin, Didin
Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.555 KB) | DOI: 10.22302/pptk.jur.jptk.v17i1.45

Abstract

Cinchona alkaloids are one of abundant natural chiral pool for organocatalysts. The application of an N-oxide group containing molecule in asymmetric reaction is currently wide developed. The structure of quinine consist two amine groups that could be oxidized to the N-oxide groups at N-1’ of quinoline and at N-1 of quinuclidine moieties. The oxidation reaction took place selectively at quinuclidine moiety by controlling the concentration of oxidizing agents. In this study we showed that N-1-oxide quinine could be occurred chemo­selectively by using a low concentration of ozone thana palladium catalyzed oxidation. The structure of products N1-oxide quinine was elucidated by spectroscopy data including 1H-NMR, 13C-NMR, 2D-NMR, infra-red and mass spectrometry. The developed method is a chemoselectively and eco-friendly method for synthesis N1-oxide quinine.
Foliar Fertilizer and Pesticide Methomyl 25% in Tea Plantation after Infested by Pest. (1) Effect of Productivity Increasing and Yield Components haq, muthia syafika; Fauziah, Fani; Karyudi, Karyudi
Jurnal Penelitian Teh dan Kina Vol 18, No 1 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.918 KB) | DOI: 10.22302/pptk.jur.jptk.v18i1.65

Abstract

The experiment of effect of Foliar Fertilizer (N& ZnSo4) and pesticide compatibility with Methomyl 25% compound to increasing Tea Productivity (Camellia sinensis) has been conducted in Research Institute for Tea and Chincona experimental plantation1350 m above sea level and andysol type soil. The experiment started from November 2013 – Februari 2014  in produced tea area with 1.080 plant population. Material plantswere GMB 4 clones with second pruning year and 12 days plucking interval. The experiment was arranged on randomized block design with 9 treatments and 3 replicate. Foliar fertilizer and pesticide combination which has been examined  were  (1) Methomyl 25% (control), (2) Methomyl 25% + Zn 1%, (3) Methomyl 25% + Zn 2%, (4) Methomyl 25% + N 1%, (5) Methomyl 25% + N 2%, (6) Methomyl 25% + N 1% + Zn 1%, (7) Methomyl 25% + N 1% + Zn 2%, (8) Methomyl25% + N 2% + Zn 1%and (9) Methomyl25% + N 2% + Zn 2. Spraying application done every after plucking. The results  showed that skiffing treatment can control the tea plantation that infested by pest and stimulate the new bud growth. The results  also showed that productivity increased significantly up to37, 48 % (2.781 gr/40 plants) when the plants were treated with Methomyl + N 1% + Zn 2%.But,the increased production is accompanied by an increase of banjhi because plant still using their nutrition to recovering after pest infested. The weight of pecco which grown from the  lateral buds is relatively small because of skiffing. Bud growth rate after given treatment was obtained only 3-4 cm/ 6 days caused by lack of light intensity at the time of reserached
(1,1-Diphenyl-2-Picrylhydrazyl) free radical scavenging activity of white tea base on temperature and period of brewing Rohdiana, Dadan; Arief, Dede Zainal; Somantri, Mamay
Jurnal Penelitian Teh dan Kina Vol 16, No 1 (2013)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (332.03 KB) | DOI: 10.22302/pptk.jur.jptk.v16i1.87

Abstract

Research of 1,1-Diphenyl-2-Picrylhydrazyl (DPPH) free radical scavenging activity has been done conducted on Laboratory of Quality Assesment, Research Institute for Tea and Cinchona, and Laboratory of Chemistry, Chemistry Department, Faculty of Matematic and Natural Science, Padjdjaran University. The result showed that among four white tea from different estates, total polyphenol content on Gambung White Tea has the highest. Total polyphenol content of Gambung white tea i.e 25,52%. Brewing process on 95oC for 9 minutes obtained the highest polyphenol content on tea infusion i.e. 6,01% and the lowest EC50 i.e. 35,41 µl/ml. This research showed that presence of positive correlation between total polyphenol and antioxidant activity base on EC50. The correlation value in this research i.e. 0,9066.
The effect of climate change on rainfall pattern and deficit of water in tea plantation Dalimoenthe, Salwa Lubnan; Apriana, Y; June, T
Jurnal Penelitian Teh dan Kina Vol 19, No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.851 KB) | DOI: 10.22302/pptk.jur.jptk.v19i2.104

Abstract

Climate change has been influencing rainfall pattern so that it would be necessary to see the impact of that changed on tea plantation. The experimental area coverage lowland (600 m asl), midland (800-1000m asl) and highland (>1.000 m asl) tea plantation and each altituted represented by three tea estate in West Java. The rainfall data collected since 2005 up to 2014 from each estate and water deficit has been count through the method develop by Wijaya (1996). The results showed that the rainfall pattern has been changed by La-Nina and El-Nino during 2005-2014 in tea estate either in lowland, midland or highland in the last decade. The climate change caused  rainfall decreasing and increasing on dry month (the rainfall < 100 mm). Eventhough on 2009 there is an significantly increasing of the rainfall but after 2009 until 2014, the rainfall tend to decrease. After El-Nino on late 2009 and early 2010, lowland tea estate on Subang Regency facing water deficit until 5 months with R (defisit water index) far below 1 even there is no El Nino. The tea plantation at midland area (Cianjur Regency) facing 5 months water deficit per year, but the R index close to 1. While in highland tea plantation (Bandung Regency), the water deficit only happend on certain month on certain year although there is a month with zero rainfall. Water deficit could be happend because of runoff on soil surface stimulate by low ability of soil to keep the water.
Tea Import Policy Recommendation Aziza Rahmaniar Salam
Jurnal Penelitian Teh dan Kina Vol 17 No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v17i1.2

Abstract

This paper analyzes a posibility of a proposed policy on the importation of tea that can increase performance and competitiveness of Indonesia tea. The method used was pros­pective analysis method. The analysis revealed that the proposed policy is to increase import duty tariffs and non-tariff barriers. Policies proposed on non-tariff barriers are import controls by constructive a regulation on pro­duct importer, Indonesian packaging label, and certain importers for importation of tea as an ingredient and formulation on technical verification (VPTI) for all importation of tea products containing specified information in maximum crude fiber content of 15% and minimum of 33% extract in water (w/w) as indicated in SNI.
The effect of permanent shade tree at mature tea area on microclimate, the population of pest insects and natural enemies, and tea shoot production Wahyu Widayat; Dini Jamia Rayati
Jurnal Penelitian Teh dan Kina Vol 14 No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i1.4

Abstract

A study to know the effect of permanent shade trees at mature tea area on microclimate, the population of pest insects and natural enemies, as well as tea shoot production was carried out at Blok B-4 Afdeling Gambung Selatan (1.300 m asl) of Research Insitute for Tea and Cinchona, Bandung, West Java, from January up to December 2009. The study carried out using experimental observation method with two treatments, viz. mature tea area with and without permanent shade tree, silver oak (Grevillea robusta). The parameters of microclimate: temperature, relative humidity, and sunshine intensity, the population of various pest insects and natural enemies, as well as tea shoot production were observed regularly during dry and rainy seasons at the two experimental plots. The results showed that the existence of permanent shade trees Grevillea robusta at mature tea area could maintain the temperature, relative humidity (RH), and sunshine intensity suitable for tea growth at dry season, suppress the population of pest insects, and on the contrary increase the population of natural enemies, as well as increase  the tea shoot production, up to 21% at rainy season, and up to 55% at dry season.
The effectiveness of various biological control agents on blister blight disease (Exobasidium vexans Massee) on tea Dini Jamia Rayati
Jurnal Penelitian Teh dan Kina Vol 14 No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i1.5

Abstract

In order to obtain an effective, efficient, and environmentally sound biological control method of blister blight disease (Exobasidium vexans Massee) on tea, a field trial has been conducted to know the effectiveness of various antagonistic microorganisms as biological control agents, on blister blight disease. The trial was carried out at Ciliwung Tea Plantation (1.400 m asl), Bogor, West Java, designed in randomized complete block (RCB), with 7 treatments and 3 replications. The treatments tested comprised 2 filamentous fungi (molds): Verticillium sp. and JD (unidentified); yeast: Rhodotorula rubra; 2 bacteria: B5 (unidentified) and Bacillus subtilis; copper-chemical fungicide as a standard treatment; and control. The biological control agents and fungicide were sprayed on tea bushes infected by blister blight disease, and the parameter observed was blister blight disease intensity, which was formulated in percentage of disease intensity index (DII). The results showed that in heavy-attack condition (disease intensity index higher than 50%), only yeast Rhodotorula rubra which was effective in suppressing blister blight disease intensity on tea, up to 22%. Meanwhile, the others treatments of antagonistic microorganisms could not suppress the disease intensity, even the copper-chemical fungicide as a standard treatment was no longer effective too.
The control of penny fern in tea through pruning and herbicides Sobar Darana
Jurnal Penelitian Teh dan Kina Vol 14 No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i1.6

Abstract

Study on the control of penny fern in tea through pruning and herbicides was con­duct­ed in Pasir Sarongge Experimental Garden, 1.100 m asl from August to November 2010. Experimental design used was split plot design, consisted of three main plots and six subplots. The main plot (pruning height) consisted of (A) 40 cm pruning height, (B) 55 cm pruning height, and (C) 70 cm pruning height. The subplot (method of weed control), consisted of: (1) glyphosate herbicide at 6 liters/ha, (2) paraquat dichloride herbicide, at 4 liters/ha, (3) 2,4-D herbicide, at 3-3 liters/ha, (4) a com­bination of glyphosate herbicide + 2,4-D at 6 liters/ha, (5) a combination of glyphosate and picloram herbicides, at 4 liters/ha, and (6) manual con­trol of the fern. The total treatment combination was 18 treatments. Each treatment was repeated twice. Observations were made on weed biomass and the growth of tea plants. Weed biomass were observed 3 times with 2-weeks interval, starting at 2 weeks after treatment of weed control.  The growth of tea plants was observed  trought the number of primary shoots. The results showed that  the 40 cm as well as 55 cm pruning height were provided better effectivity compared to 70 cm pruning height. At the third observation, the effectiveness of manual control was similar to the treatment of chemical control, except the treatment of  single 2,4-D. The number of primary shoots  grew on bush after 70 cm pruning height were higher and significantly different compared to the 40 cm pruning height as well as 55 cm pruning height. In every observations, the highest number of primary shoots per bush were consistently obtained from the treatment of combination of  glyphosate and 2,4-D herbicides.
The effective control using biopesticide insects glue against the main pest Empoasca on tea plant Odih Sucherman
Jurnal Penelitian Teh dan Kina Vol 14 No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v14i1.7

Abstract

The observation of the  control of bio-diversity the main pest Empoasca on tea plantation effective, efficient and neighborly environment has been undertaken testing insects glue as biodiversity control to main pests Empoasca in the field. The research done in the Pasir Sarongge Experimental Garden (1.100 m asl), Cianjur, West Java. Testing designed in random block design (RBD) with 5 treatment and 5 replication. Treatment tested were: (1) formulation of glue M-5; (2) formulation of glue M-10; (3) formu­lation of glue M-15; (4) formulation of glue comparator; (5) untreated. All the treatment of glue was applied by means of smeared on mineral water bottle (600 ml), every plot installed 5 bottle. Parameters in the observations were the population Empoasca trapped in glue, and intensity attack Empoasca. Research results in a laboratory pointed out that glue M-5 more effectively entraps pests Empoasca when compared to another formu­lation, and comparator glua, as well untreated. Whereas the results of observation in the overall pointed out that the use of formulation of glue M-5 which is formulation lowest have enough effectively to catch pests Empoasca in the field was 19,83 head trap or the equivalent to the 79,32 head any every plot in the area plot 50 m2. The arrest shall taller when experiments was undertaken in dry season.

Page 9 of 23 | Total Record : 226

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