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Jurnal Penelitian Teh dan Kina
Jurnal Penelitian Teh dan Kina is an 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.
Articles by issue : Vol 17, No 1 (2014)
5
Articles
Tea Import Policy Recommendation

Salam, Aziza Rahmaniar

Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

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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 indigenous and exogeneous endophythic bacteria on shoot production, soil and tea leaf nitrogen content under drought season

Pranoto, Eko

Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

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Abstract

Drought season with rainfall <100 mm/month for more than two months cause tea plant growth disturbed, reduction in leaf pro­duction, and death of plant. Nitrogen was the macro essential nutrient needed for vegetative growth and was important for building the cell, include protein, DNA, and RNA. Nitrogen was related on proline content to support the drought tolerance in plant. The nitrogen re­quirement on tea plantation can be fulfilled by anorganic, organic, and biofertilizer. This study was aimed at determining effect of indigenous and exogeneous endophythic bacteria effec­tiveness on productivity and nitrogen content on soil and tea plant. This research was carried out at the Block A7 Gambung, Research Intitute for Tea and Cinchona. The study was conduc­ted during drought season (June to September 2013). The experimental design was randomize blocked design with factorial arrangement and three levels of each factor: i.e. 1. anorganic nitrogen dose (N): a. 100% N dose; b. 75% N dose; c. 50% N dose, 2. endophytic bacteria (E); a. control (without); b. indigenous (DtG7-5); c. exogenous (Acinetobacter sp). The result showed that the indigenous and exogenous endophytic bacteria could be maintained the leaf production and significantly different on drought season, i.e. on 3rd, 4th, and 6th plucking. The highest leaf production increasing depend on before applied the treatment was the combined of endophitic bacteria and 100% anorganic fertilizer. All of the treatment has not significantly different on N-total of soil and N content of plant. The applied of indigenous and also exogenous endophytic bacteria was pro­duced the average of nitrogen content on soil around 10-13% higher than the control treat­ment (only anorganic fertilizer applied) and the nitrogen content on plant was lower 1-2% than control treatment (only anorganic fertilizer applied).

In-vitro experiment of nitrogen fixing capacity of indigenous and exogeneous Azotobacter sp at Andisol tea planting area’s

Pranoto, Eko, Setiawati, Mieke Rochimi

Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

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Abstract

An in-vitro experiment to evaluate total nitrogen content of soil of tea plantation area included with indigenous and exogenous Azoto­bacter sp have been conducted in the Biology and Soil Biotechnology Laboratory, Padja­djaran University. A completely randomized design with 11 treatments and three repli­cations was used. The treatments were: A (ne­gative control); B (positive control); C (A. Kedelai II); D (A. vinelandii); E (A. N.D.9.3); F (A. Padi); G (VI-1); H (II-1); I (V-2); J (I-1); and K (III-2). Size of microbe inoculated popu­lation for each treatment was 1,2 x 1011 CFU/ml. One percent dose was used for ste­rilized soil originated from the tea plantation area. After five days of incubation period re­vealed that II-1 Azotobacter sp produced very significantly different in total nitrogen pro­duction than the other Azotobacter sp, i.e. 0,8532%. Orthogonal comparisons indicated that indigenous Azotobacter sp had the capacity of nitrogen fixation 7,67% higher than that the capacity of nitrogen fixation of exogenous Azotobacter sp for growth on Andisol soil of tea plantation area with pH of 4,5-5,6. Although, Azotobacter sp is very rarely found in soil with low pH (high acidity), this phenomena indi­cating that an active biofertilizer of indigenous Azotobacter sp is present in tea plantation area.

The effect of pottasium (K) on the development of scarlet mite (Brevipalpus phoenicis Geijske) population at tea crop (Camellia sinensis (L.) O. Kuntze)

Sucherman, Odih

Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

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Abstract

A research experiment to know the effect of pottasium on the population development of scarlet mite and growth of young tea was carried out. The experiment was conducted at Green House of Plant Protection Department Research Institute Tea and Cinchona Gam­bung, Bandung, West Java, from December 2011 until July 2012. The soil type used is Andisol and altitude is 1.250 m above sea level. The treatments were potassium fertilizer appli­cations of 0, 30, 40 (standars treatment), 50, 60, 70, 80, 90, and 100 kg K20/ha/year; in which the 0 dosage was used as untreated control. The result of the experiment showed that: pottasium fertilizer at the dosage 70 kg K2O/ha/year to 100 kg K2O/ha/year reasonably effective in pressuring the development of the population development of scarlet mite and increasing the number of leaves as indication of rising class seedlings on young tea. Pottasium fertilizer at the medium dosage 70 kg K2O/ha­/year reasonably effective in pressuring the development of the population development of scarlet mite and increasing the number of leaves as indication of rising class seedlings, when compared to the standards (40 kg/ha/y) and control dose on young tea.

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

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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.