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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 34 Documents
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Search results for , issue "Vol 5, No 2 (2000)" : 34 Documents clear
IDENTIFIKASI LAHAN BAGI PENGEMBANGAN TANAMAN JAHE (Zingiber offlcinale Rose.) DAN MELINJO (Gnetum gnemon L.) Dedi Soleh Effendi
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1156

Abstract

Ginger (Zingiber officinale Rose.)and melinjo (Gnetum gnemon L) are potential comodities that have great opportunity to be promoted.Ginger is one of nine spices in international trade (and its market is also available in Indonesia and foreign market),while melinjo is known for long time and has high economic value. One important in promoting both comodities had to be known land potency in which both comodities would be cultivated.Land identification would be base on soil analysis in the laboratory,land ability map and field observation. Evaluation of soil fertility criteria and land suitability based on TOR Classification of land ability from Center Research of Soil and Agroclimate.Evaluation of soil chemical properties include N-toial, P-available, exchangeable potassium, cation exchange capacity, pH, and C-organic content.Evaluation of soil physical properties include soil-texture, drainage, soil effective depth and climate.The aim of this study was to observe real/current and potential land suitability level for ginger and melinjo in Lebak District.The result showed that land potency for promoting ginger and melinjo were 89 ha and 71 - 98 ha respectively.
BEBERAPA CATATAN TENTANG ASPEK PERTUMBUHAN, MAKAN DAN REPRODUKSIIKAN NILEM PAITAN (Osteochilus jeruk Hadiaty & Siebert, 1998) Renny Kurnia Hadiaty
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1135

Abstract

Osteochilus jeruk is one of the two new species of Osteochilus occuring in Gunung Leuser National Park, Aceh, Sumatra, Indonesia.It has a big size and beautiful colour, so it is potential as food and aquarium fish. Notes on growth, food and reproduction were examined as base for the culture of this fish.
Di Sela-Sela Laboratorium dan Plot Eksperimen MENGENAL HPLC: PERANANNYA DALAM ANALISA DAN PROSES ISOLASI BAHAN KIMIA ALAM Tri Murningsih; Chairul Chairul
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1161

Abstract

The development of method to explore natural chemical product initially from plants were started from the beginning and generously from time to time from the conventional one's until sophisticated equipments.The value of plants as food,cosmetic and medicines resources needs specific instruments and methods for determining the quantity as well as quality of the materials in plants.This paper describe in detail one of the sophisticated equipments commonly used for analyzing and isolating bioactive compounds the so called High Performance Liquid Chromatography (HPLC).
HUBUNGAN AIR DAN TANAMAN DIPELAJARI SECARA TERINTEGRASI DENGAN MODEL SIMULASI DINAMIK Nuril Hidayati
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1152

Abstract

Water is the most crucial factor in affecting plant growth and production.In order to assess the complex relationship between plant and water,a dynamic model of crop growth was constructed by interlinking plant growth and soil water models.The growth model mainly consists of physiological processes, i.e.photosynthesis, respiration, partitioning, leaf growth and phenological development.The photosynthesis and partitioning models are based on SUCROS, extended in two ways, the calculation of light use efficiency as a function of air temperature and extinction coefficient as a function of LAI.The development model was calculated based on thermal time concept.Water balance model comprises evaporation and transpiration as water losses, and rainfall and irrigation as water sources at 1 m - depth. Evaporation was based on Penmann Monteith formula.Both models were linked by relating the degree of growth reduction to water deficits. Simulation results showed a good agreement with observed data in predicting soil water deficits and crop water use for all of the treatments, i.e.irrigated, irrigated just after flowering, dry and rainfed.Despite the model predicted soil water considerably well, it tent to overestimate soil water deficits in the beginning of the growing period for both years. The results also showed a good agreement between simulated and observed dry matter production,especially under irrigated and rainfed conditions.

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