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Exploration and Effectiveness Test from Some Tea Indigenous Potassium Soluble Bacteria Pranoto, Eko; Wulansari, Restu; Athallah, Faris Nur Fauzi; Lestari, Fitrianti Widya
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 (368.544 KB) | DOI: 10.22302/pptk.jur.jptk.v19i2.110

Abstract

Tea is a plant that benefits for health. The growth of tea plant was influenced by several factors, including superior clones and nutrient availability in soil. One of the most important macro nutrients is potassium. However, the availability of potassium is low because of retention on the soil. One of the methode for absorbed by plant was used Potassium Solubilizing Bacteria (PSB) with its organic acid function. The aim of the study was to explore and determine the density of colonies (DC) and the potential of Tea Indigenous PSB. Inoculum source from tea rhizosphere and rhizoplan of GMB 7, GMB 9 and TRI 2024 clones. The experimental design used was completely randomized design with six treatments and four replications, i.e. : GMB 7 Rhizosphere; GMB 7 Rhizoplan; GMB 9 Rhizosphere; GMB 9 Rhizoplan; TRI 2024 Rhizosphere; and TRI 2024 Rhizoplan. Ten isolates with the highest halozone was tested by the Dissolution Index (DI) of the PSB. The result showed that the highest DC was GMB 9 rhizoplan by 10.9 x 105 CFU/g and the lowest was TRI 2024 rhizoplant by 3.1 x 105 CFU/g. The DC on GMB clones series showed that rhizoplan was 14,29% higher than rhizosphere. There is no significant difference of DI for PSB colonies from all clones. From that clones, we were obtained 10 isolat that have the highest halozone, that were 2 isolates from rhizosphere and 8 isolates from rhizoplan. The average of DI rhizosphere isolates was 119,9% higher than rhizoplan.
Effect of Inorganic and Organic Liquid Fertilizer Application with Different Application Frequency on Growth of Yielding Tea Athallah, Faris Nur Fauzi; Wulansari, Restu; Pranoto, Eko; Alimin, Muhammad
Jurnal Agro Industri Perkebunan Vol. 9 No. 2 (2021)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v9i2.1941

Abstract

Input factor is one of the determinator the quality and response of the tea plant growth. Inorganic fertilizer input still dominates in Indonesian plantations due to the lack of comprehensive evaluation of organic fertilizers, especially in liquid form. This study aims to determine the effect of inorganic and organic liquid fertilizer applications and the frequency of their application on the growth of tea plants. The experiment was carried out based on a Randomized Block Design (RBD) consisting of six treatment combinations, including tap water application once a week, tap water once every two weeks, 1% urea once a week, 1% urea every two weeks, 1% POC once a week and 1% POC once every two weeks. Experiments were carried out on yielding tea plants with the 3rd year of pruning stage. The parameters observed were shoot production (kg.plot-1), weight of banji and pekoe (g.100g-1) and the ratio of banji/pekoe. The results showed that the application of urea foliar fertilizer and liquid organic fertilizer with different application frequencies did not have a significant effect on each observed parameter. Application of 1% liquid organic fertilizer once every two weeks has the potential to increase tea productivity by showing a relatively high production of tea (6.88 kg.plot-1) compared to other treatments.
Topsoil Thickness and Its Chemical Properties between Tea Plantation and Bare Land on Different Slopes Athallah, Faris Nur Fauzi; Wulansari, Restu
Journal of Applied Agricultural Science and Technology Vol. 9 No. 3 (2025): 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.v9i3.103

Abstract

Land degradation in Indonesia is often attributed to human activities and high rainfall. The existence of forest land clearing and conversion into non-agricultural land causes topsoil erosion and structural damage, reducing the capacity to hold water and nutrients. The phenomenon contributes to the degradation of tea (Camellia sinensis) plantation, showing the need to improve agricultural land by maintaining soil ecosystems. Therefore, this study aimed to compare soil from tea plantation with bare land on two different slopes based on the chemical quality at Gambung Tea Plantation, Research Institute for Tea and Cinchona. The selected land slope was gentle (0 - 8%) and steep (30 - 40%), producing four environmental combinations. Soil sampling was carried out in two different layers, at 0 - 20 cm and 20 - 40 cm. The experimental parameters observed were topsoil thickness, soil water content, pH, and soil nutrients. The results showed that in steep slope land conditions, tea cover crops maintained topsoil with a thickness of 15.01 cm compared to bare land. This corresponded to topsoil degradation of 19.6% compared to gently slope topographic conditions. In gently slope conditions, both types of land cover did not show significant differences. Tea plant cover maintained better soil water content and reduced soil N loss, although steep slopes showed lower soil nutrient content due to absorption.