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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia MEDIA KONSERVASI Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmiah Aplikasi Isotop Radiasi Microbiology Indonesia Journal of Tropical Soils Jurnal Penelitian Hutan Tanaman Plumula : Berkala Ilmiah Agroteknologi Pelita Perkebunan Journal of Degraded and Mining Lands Management Jurnal Sumberdaya Hayati ZOO INDONESIA Jurnal Penelitian Karet AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal Bioteknologi & Biosains Indonesia (JBBI) SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Tropical Crop Science Jurnal Entomologi Indonesia Agroekoteknologi Tropika Lembab Agro Bali: Agricultural Journal Jurnal Kesehatan Jurnal Tanah dan Iklim Zoo Indonesia Prosiding Seminar Nasional Biologi
RAHAYU WIDYASTUTI
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Other

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Journal : Journal of Tropical Soils

 1 
The Diversity and Abundance of Springtail (Collembola) on Forests and Smallholder in Jambi Widrializa, .; Widyastuti, Rahayu; Santosa, Dwi Andreas; Djajakirana, Gunawan
JOURNAL OF TROPICAL SOILS Vol 20, No 3: September 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i3.173-180

Abstract

Harapan forests is the first restoration forest in Indonesia, includes several different ecosystems. Different ecosystems have different characteristic to affect the diversity and abundance of Collembola. In the ecosystem, Collembola have an important role in biocontrol, decomposition, soil nutrient distribution, stimulation of soil microbial activity and as an alternative feed for predators. This study was aimed to investigate the diversity and abundance of Collembola in four ecosystems at Harapan forest, i.e. secondary forest, rubber forest, rubber smallholder and oil palm smallholder. To achieve the objective, soil samples were taken at 48 observation points in the four ecosystem. The soil samples were then extracted by Kempson Extractor. The diversity and abundance of Collembola in four ecosystems were categorized as medium to high. The total of individual and population of Collembola in the secondary and rubber forest ecosystems were likely to be higher than in the rubber and oil palm smallholders. This study had also identified four orders, 14 families and 31 genera of Collembola, where Isotomiella and Proisotoma dominated the genus of Collembola in the four ecosystems. [How to Cite: Widrializa, R Widyastuti, DA Santosa and G Djajakirana. 2015. The Diversity and Abundance of Springtail (Collembola) on Forests and Smallholder in Jambi. J Trop Soils 20: 173-180. Doi: 10.5400/jts.2015.20.3.173] 
Study of Root Exudate Organic Acids and Microbial Population in the Rhizosphere of Oil Palm Seedling . Anandyawati; Enok Sumarsih; Budi Nugroho; Rahayu Widyastuti
JOURNAL OF TROPICAL SOILS Vol 22, No 1: January 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i1.29-36

Abstract

Mutual interaction between plants and microbes occured in the rhizosphere is expected to increase productivity of crops or soil fertility for agriculture. Plants excrete root exudates to attract microbes, and then microbes obtain habitat and food supply from plants and can fulfill the nutrient requirements through assisted enzymatic activity.  The objective of the research was to study the types and amounts of root exudate organic acids, microbial population, and the relationship between root exudate organic acids and microbial population in the rhizosphere of oil palm seedlings. The study was conducted in a greenhouse using a planting medium of sterile quartz sand. The study was conducted using two factorials completely randomized design with three replications. The first factor was oil palm seedling age (control / no oil palm seed, 1, 3, 6, 9 and 12 months-old of oil palm seedlings) and the second factor was the periods of seedling growth (45, 90, 135 and 180 days), so in total there were 72 experimental units. The result of High Pressure Liquid Chromatography (HPLC) analysis revealed that four kinds of organic acids were observed in the rhizosphere of oil palm seedlings, with the highest concentration were: acetic acid (1.66 ppm), citric acid (0.157 ppm), malic acid (2.061 ppm) and oxalic acid (0.675) ppm. The highest total population of microbes, fungi, Azotobacter, phosphate solubilizing bacteria (PSB) and phosphate solubilizing fungi (PSF) were 19.38 × 106 cfu g-1 soil, 3.28 × 104 cfu g-1 soil, 12.09 × 105 cfu g-1 soil, 8.39 × 104 cfu g-1 soil and 1.15 × 104 cfu g-1 soil, respectively. There are positive correlations between root exudate organic acids and total microbes, fungi, Azotobacter, PSB and PSF are.Keywords: microbes, organic acids, rhizosphere, root exudates
Effect Carrier Materials of Bradyrhizobium sp. strain PZS_A08 on Growth of Indigofera zollingeriana Wilhelmus Terang Arga Sanjaya; Sari Yulia Kartika; Desak Ketut Tristiana Sukmadewi; Rahayu Widyastuti; Iswandi Anas
JOURNAL OF TROPICAL SOILS Vol 26, No 2: May 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i2.95-103

Abstract

Sustainable forage production is needed to meet animal feed needs as the livestock industry increases. The purpose of this study is to evaluate the effect of liquid and solid carrier material on the effectiveness and infectivity of Bradyrhizobium sp. strain PZS_A08 on the growth of Indigofera zollingeriana (I. zollingeriana). The two carrier materials used were zeolite (solid) and molasses (liquid). This study used two carrier materials consisting of zeolite (solid) and molasses (liquid). The five treatments given were P0 (50% NPK), P1 (50% NPK+liquid biofertilizer), P2 (50% NPK+sterile liquid biofertilizer), P3 (50% NPK+solid biofertilizer), P4 (50 % NPK+sterile solid biofertilizer), P5 (100% NPK). Observations were made on the plant's height, number of leaves, number of nodules, upperparts and root wet biomass, root and upper parts dry biomass, root length, and microbial population). The use of liquid and solid carrier materials effectively affected the effectiveness and infectivity of Bradyrhizobium sp. strain PZS_A08 on  I. zollingeriana. Inoculants Bradyrhizobium sp. strain PZS_A08 significantly increased plants' growth and reduced the use of 50% NPK fertilizer. Cold storage temperature (5ºC) effectively maintained Bradyrhizobium sp. strain PZS_A08 on liquid and solid carriers, while solid carriers showed better effectiveness at room temperature storage (30oC). Through this research, solid carriers such as zeolite are recommended as carriers for Bradyrhizobium sp. filter PZS_A08.
Study of Root Exudate Organic Acids and Microbial Population in the Rhizosphere of Oil Palm Seedling Anandyawati, .; Sumarsih, Enok; Nugroho, Budi; Widyastuti, Rahayu
JOURNAL OF TROPICAL SOILS Vol. 22 No. 1: January 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i1.29-36

Abstract

Mutual interaction between plants and microbes occured in the rhizosphere is expected to increase productivity of crops or soil fertility for agriculture. Plants excrete root exudates to attract microbes, and then microbes obtain habitat and food supply from plants and can fulfill the nutrient requirements through assisted enzymatic activity. The objective of the research was to study the types and amounts of root exudate organic acids, microbial population, and the relationship between root exudate organic acids and microbial population in the rhizosphere of oil palm seedlings. The study was conducted in a greenhouse using a planting medium of sterile quartz sand. The study was conducted using two factorials completely randomized design with three replications. The first factor was oil palm seedling age (control / no oil palm seed, 1, 3, 6, 9 and 12 months-old of oil palm seedlings) and the second factor was the periods of seedling growth (45, 90, 135 and 180 days), so in total there were 72 experimental units. The result of High Pressure Liquid Chromatography (HPLC) analysis revealed that four kinds of organic acids were observed in the rhizosphere of oil palm seedlings, with the highest concentration were: acetic acid (1.66 ppm), citric acid (0.157 ppm), malic acid (2.061 ppm) and oxalic acid (0.675) ppm. The highest total population of microbes, fungi, Azotobacter, phosphate solubilizing bacteria (PSB) and phosphate solubilizing fungi (PSF) were 19.38 × 106 cfu g-1 soil, 3.28 × 104 cfu g-1 soil, 12.09 × 105 cfu g-1 soil, 8.39 × 104 cfu g-1 soil and 1.15 × 104 cfu g-1 soil, respectively. There are positive correlations between root exudate organic acids and total microbes, fungi, Azotobacter, PSB and PSF are.Keywords: microbes, organic acids, rhizosphere, root exudates
The Diversity and Abundance of Springtail (Collembola) on Forests and Smallholder in Jambi Widrializa, .; Widyastuti, Rahayu; Santosa, Dwi Andreas; Djajakirana, Gunawan
JOURNAL OF TROPICAL SOILS Vol. 20 No. 3: September 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i3.173-180

Abstract

Harapan forests is the first restoration forest in Indonesia, includes several different ecosystems. Different ecosystems have different characteristic to affect the diversity and abundance of Collembola. In the ecosystem, Collembola have an important role in biocontrol, decomposition, soil nutrient distribution, stimulation of soil microbial activity and as an alternative feed for predators. This study was aimed to investigate the diversity and abundance of Collembola in four ecosystems at Harapan forest, i.e. secondary forest, rubber forest, rubber smallholder and oil palm smallholder. To achieve the objective, soil samples were taken at 48 observation points in the four ecosystem. The soil samples were then extracted by Kempson Extractor. The diversity and abundance of Collembola in four ecosystems were categorized as medium to high. The total of individual and population of Collembola in the secondary and rubber forest ecosystems were likely to be higher than in the rubber and oil palm smallholders. This study had also identified four orders, 14 families and 31 genera of Collembola, where Isotomiella and Proisotoma dominated the genus of Collembola in the four ecosystems. [How to Cite: Widrializa, R Widyastuti, DA Santosa and G Djajakirana. 2015. The Diversity and Abundance of Springtail (Collembola) on Forests and Smallholder in Jambi. J Trop Soils 20: 173-180. Doi: 10.5400/jts.2015.20.3.173] 
Effect Carrier Materials of Bradyrhizobium sp. strain PZS_A08 on Growth of Indigofera zollingeriana Sanjaya, Wilhelmus Terang Arga; Kartika, Sari Yulia; Sukmadewi, Desak Ketut Tristiana; Widyastuti, Rahayu; Anas, Iswandi
JOURNAL OF TROPICAL SOILS Vol. 26 No. 2: May 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i2.95-103

Abstract

Sustainable forage production is needed to meet animal feed needs as the livestock industry increases. The purpose of this study is to evaluate the effect of liquid and solid carrier material on the effectiveness and infectivity of Bradyrhizobium sp. strain PZS_A08 on the growth of Indigofera zollingeriana (I. zollingeriana). The two carrier materials used were zeolite (solid) and molasses (liquid). This study used two carrier materials consisting of zeolite (solid) and molasses (liquid). The five treatments given were P0 (50% NPK), P1 (50% NPK+liquid biofertilizer), P2 (50% NPK+sterile liquid biofertilizer), P3 (50% NPK+solid biofertilizer), P4 (50 % NPK+sterile solid biofertilizer), P5 (100% NPK). Observations were made on the plant's height, number of leaves, number of nodules, upperparts and root wet biomass, root and upper parts dry biomass, root length, and microbial population). The use of liquid and solid carrier materials effectively affected the effectiveness and infectivity of Bradyrhizobium sp. strain PZS_A08 on  I. zollingeriana. Inoculants Bradyrhizobium sp. strain PZS_A08 significantly increased plants' growth and reduced the use of 50% NPK fertilizer. Cold storage temperature (5ºC) effectively maintained Bradyrhizobium sp. strain PZS_A08 on liquid and solid carriers, while solid carriers showed better effectiveness at room temperature storage (30oC). Through this research, solid carriers such as zeolite are recommended as carriers for Bradyrhizobium sp. filter PZS_A08.
Co-Authors . Anandyawati . Giyanto . Giyanto A M Zuhud, Ervizal Abda Abda Abied Khafidhan Adiyaksa, Ivan Khofian AHMAD JUNAEDI Ana Khalisha Anandyawati, . Anas Iswandi Andreas Panjaitan Andreas Panjaitan Ania Cintaresmini Ania Citraresmini Ania Citraresmini Ania Citraresmini Antonius Suwanto Aprilianti, Nabila Apsari Putri Wulandari Aris Tri Wahyudi Atang Sutandi Atit Kanti Aviantara, Dwindrata B. Azra Zahrah Nadhirah Ikhwani Bria, Deseriana Budi Nugroho Budi Nugroho Dadang . DADANG DADANG Daniel Happy Putra Darmawan Darwis Delima Napitupulu Delima Napitupulu Devanda Ayu Lidya Permata Putri Dewi Sekar Pengerteni Dewi, Tirta Kumala Dhanti Hanifa Muslimah Dimas Syahiddin Dwi Andreas Santosa DWI ANDREAS SANTOSA Dwi Wulandari Edy Hartulistiyoso Eka Lupitasari Endang Sulistyorini Endang Sulistyorini Enny Widyati Enok Sumarsih ERNIN HIDAYATI Erwinda Erwinda Evi Ambarsari Fahrizal Hazra Fajri, Ihsanul Fany Juliarti Panjaitan Fitriyani, Indri Hapsari Giyanto Gunawan Djajakirana Hariyadi Heru Bagus Pulunggono I Made Sudiana I Nyoman Sujana Ida Widiyawati Idris Idris Idris, Komaruddin Irawati, Arfi Irdika Mansur Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Chaniago Jekvy Hendra Jekvy Hendra Joko Warino Kartika, Sari Yulia Khairiyah, Yaumil Laksmita Prima Santi MAIPA DIA PATI Masaru Kobayashi Maulinda, Restiana Misbakhul Bait Nabila Dianisa Niken Puspita sari Nofrifaldi Ohiwal, Morgan Priyo Cahyono Putri Wulandari, Dwi Ramadhani Sri Astuti, Andi Febrianti Ratnawati Lantifasari Remila Selvany Risa Rosita Rohani Cinta Badia Ginting Rumella Simarmata Rury Kurniawan Safira Eka Aprianti Sanjaya, Wilhelmus Terang Arga Sari Yulia Kartika Sarjiya Antonius SATRIYAS ILYAS Satya Nugroho Soetanto Abdoellah Sri Sulisawati Suciati, Fuzi Sugeng Santoso Sugiarto, Petrus Sugiyanta , Sukmadewi, Desak Ketut Tristiana Sumarsih, Enok Suryo Wiyono Syaiful Anwar Taufiq Hidayat Tita Puspitasari Titik Tri Wahyuni Umadi, Sarah Sakinah Umi Hidayati Umi Hidayati Utami, Aditya Dyah Widrializa, . Wilhelmus Terang Arga Sanjaya Wilhelmus Terang Arga Sanjaya Wilhelmus Terang Arga Sanjaya Winda Ika Susanti Wiwik Eko Widayati Yayuk R. Suhardjono Yayuk Rahayuningsih Suhardjono Yayuk Rahayuningsih Suhardjono Yuni Lisafitri, Yuni Yusuf, Sri Malahayati Zuhud, Evrizal A M