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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura Indonesia (JHI) Agrotrop : Journal on Agriculture Science Journal of Tropical Soils Jurnal Ilmu-Ilmu Pertanian Indonesia TERRA : Journal of Land Restoration Akta Agrosia
Merakati Handajaningsih
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science

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Delivery of Arbuscular Mycorrhiza Fungus Spores via Seed Coating with Biodegradable Binders for Enhancement of the Spores Viability and Their Beneficial Properties in Maize Marwanto, Marwanto; Bustaman, Hendri; Handajaningsih, Merakati; Supanjani, Supanjani; Murcitro, Bambang Gonggo; Salamah, Umi
Akta Agrosia Vol 23, No 1 (2020)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.23.1.1-10

Abstract

biodegradable polymer such as PVA is considered the most promising candidates for developing the sustainable sticker. The objective of this study was to determine the most suitable PVA + TS blends as adhesives agent for AMF spores inoculation via seed coating which can enhance the spores viability and their beneficial properties in maize. The polythene bag experiment was performed in a screen house of the Department of Plant Protection Faculty of Agriculture, University of Bengkulu Indonesia in 2015. Six adhesive blends were employed: 100% PVA + 0% TS, 75% PVA + 25% TS, 50% PVA + 50% TS, 25% PVA + 75% TS, 0% PVA + 100% TS, and no coating. The six experimental treatments were laid out in a completely randomized design with three replications. The results show that root colonization, AMF spore population, and shoot dry weight in 75% PVA + 25% TS were equal to those in 100% PVA. Root colonization, AMF spore population, shoot P content, and shoot P concentration were greater for 50% PVA + 50% TS than 100% PVA, 100% TS, and no coating. A mixture of 50% PVA + 50% TS was considered the preferred sticker. Thus, the tapioca starch can be used to substitute 25 - 50% of the PVA used without reducing AMF inoculant adhering to seed.Keywords: polymeric seed coating, seed coating formulation, arbuscular mycorrhizal fungi, sustainable coating adhesive, seed inoculation, seed inoculant
Manually Feed NPK Fertigation Improves Growth and Yield of Chili Pepper Hybrids in Ultisol Herison, Catur; Rustikawati, Rustikawati; Hasanudin, Hasanudin; Suharjo, Usman K.J.; Handajaningsih, Merakati; Nursalim, Nursalim
Akta Agrosia Vol 23, No 1 (2020)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.23.1.19-26

Abstract

Extending the planting area to a less-fertile soil, such as Ultisols, become inevitable choice to increase the national chili pepper production in Indonesia as this types of soil is the largest part of dry land of Indonesia, about 29.7% or around 51 million ha.  However, efforts to increase its productivity by providing sufficient fertilizers application is most frequently inefficient because in the conventional fertilizer applications, broadcasted fertilizer on the soil bed, are not readily available for the plant as their solubility is limited under the plastic mulch and still in the form of granular until the end of planting season.  Fertigation, therefore, maybe the answer for this problem.  The objective of this study was to determine the best NPK fertigation method on four chili pepper hybrids.  The experiment was conducted in a randomized complete block design with three replication, and the treatments were arranged in a split plot design.  As the main plots were NPK fertigation intensity, i.e. 100%, 75%, 50%, 25% and 0% fertigation with the remnant fertilizers were circularly broadcasted surrounding the plant.  As the subplots were chili pepper hybrids, i.e. ‘Maxima’, H39, H14, and ‘UNIB CHR17’.  The results showed that there was no interaction effect of fertigation intensity indicated that all hybrid genotypes showed similar pattern of responses.  The H39 hybrid had better vegetative growth compared to other hybrids in term of plant height, dichotomous height, stem diameter, number of branches, plant fresh-weight.  Whereas the hybrid cultivar ‘Maxima’ showed the highest yield followed by H14 and cultivar ‘UNIB CHR17’.  The 100% fertigation was the best method of NPK fertilizer application for chili pepper in Ultisols.keywowrd: fertigation, chili pepper, fertilizer application, acidic soil
Pertumbuhan Awal Mahkota Dewa (Phaleriamacrocarpa) pada Beberapa Dosis Vermikomposdan Intensitas Naungan MERAKATI HANDAJANINGSIH; ENTANG I. SUKARJO; NORMA LIDIAWATI
Agrotrop : Journal on Agriculture Science Vol 3 No 2 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (61.118 KB)

Abstract

Early Growth of Phaleria macrocarpaunder Different Shade Intensity and Doses ofVermicompost. Phaleria macrocarpaisshade plant,nativeto Papua-Indonesia. This is one of themost valuable herbal plants in Indonesia and widely grown in home gardens as well as in industrialareas.Organic matter incorporated into the media can increase nutrient availability, medium moisture,plant growth regulator, and improve soil structure to support root growth. In addition, light intensity isanother factor determined the optimum growth especially on shade plants. The research was aimed tofind the most appropriate dose and shade intensity to support early growth stage of Phaleriamacrocarpa.CompletelyRandomized Design was applied in Split Plot arrangement with threereplications. The shade intensity consisted of 0, 25, 50, or 75% while the dose of vermicompostconsisted of 0, 300, 600, or 900 g polybag-1. Research showed thatno interaction was revealed betweenshade intensity and dose of vermicompost on plant height, plant fresh weight and degree of leaf greeness.Root length and root dry weight responded linierly under 25, 50, and 75% shadesThere was no responseon plant growth with the increase ofdose of vermicompost when plants were grown without shading.The highest growth as shown on leaf number, leaf area, stem diameter, and root growth was under 50%shading and application 900 g polybag-1 of vermicompost. This research thus supports the previousreport that P. macrocarpa is less tolerance to full sunlight during its early growth.
Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production . Riwandi; Merakati Handajaningsih; . Hasanudin; Ali Munawar
JOURNAL OF TROPICAL SOILS Vol 20, No 1: January 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i1.11-19

Abstract

Intensive agriculture has been well known to cause decline in soil organic matter and nutrient content of the soils. Therefore, efforts should be taken to avoid this from happening. Addition of organic fertilizers like compost has been increasingly become more important in Indonesian agriculture in the last couple of decades. The objectives of this study were to produce high quality compost using Indore method and to investigate its effects on organic-corn production. The study was conducted in the Integrated Agriculture Zone (IAZ), University of Bengkulu for two years (2012 and 2013). The study  consisted of three steps: (i) soil fertility identification, (ii) compost production, and (iii) organic-corn field production. Soil fertility identification involved physical, chemical, biological analysis of soil samples collected from less fertile and moderately fertile soils. A randomized completely block design was employed in the field study which involved five rates of compost and two levels of soil fertility with three replications.  In 2012, high quality compost was black, had pH 8, fine, odorless, and sufficiently high in NPK contents. Organic-corn yielded 2.94 and 5.69 Mg ha-1 of dried kernels on less fertile and moderately fertile soils, respectively at 20 Mg ha-1 compost. Similarly, in 2013 high quality compost was black, had pH 8, moderate, odorless, and high in NPK contents. The corn yields were 3.75 and 1.93 Mg ha-1 on less fertile and moderately fertile soils, respectively at 22.50 Mg ha-1 compost.  [How to Cite: Riwandi, M Handajaningsih, Hasanudin, and A Munawar. 2015. Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production. J Trop Soils 19: 11-19. Doi: 10.5400/jts.2015.20.1.11][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.11]
Relationship between Soil Health Assessment and the Growth of Lettuce . Riwandi; Merakati Handajaningsih
JOURNAL OF TROPICAL SOILS Vol 16, No 1: January 2011
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2011.v16i1.25-32

Abstract

Soil health is very important point for plant growth which is measured by several indicators. The purposes of the research were to assess and to classify soil health Padang Betuah area of Bengkulu, and to compare between soil health indicators and lettuce plant performance indicators. Soils, consist of mineral and peat soils, were sampled using a soil random sampling technique. Lettuce plants were grown in polybags using sample soils. Both lettuce performance and soil health were assessed by calculating the percentage of total scores of lettuce plant or soil performance indicators which derived from variables observed. Soil variables for field evaluation included color, moisture content, texture, structure, compaction, land slope, organic matter, pH, amount of earthworm, erosion level, LCC (Legume Cover Crop), and vegetation performance. Soil variables for laboratory evaluation were pH, electrical conductivity (EC), total Carbon and Nitrogen, available-Posphorus, cation exchangeable capacity, basesaturation, and aluminum saturation. While, the variables for lettuce growth performance included plant height, numbers of leaf, degree of leaf greenness, plant fresh weight, and relative percentage of shoot : root ratio. The results of field and laboratory evaluation showed that soil health were categoried as a healthy soil and moderate healthy soil both for mineral and peat soils, respectively. Furthermore, similar categories were also obtained for evaluation of plant performance categories. No correlation was found between the soil performance indicatorcategory and the lettuce performance category.Keywords: Field indicator, laboratory indicator, lettuce growth indicator, soil health
Zeolite Oil Palm Compost-Based Organomineral Fertilizer for Shallot Agronomic Performances and N Substitution Muhammad Tegar Putra Bahari; Marwanto Marwanto; Fahrurrozi Fahrurrozi; Merakati Handajaningsih
TERRA : Journal of Land Restoration Vol 5, No 1 (2022)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.5.1.1-7

Abstract

Application of organomineral fertilizer (OMF), which is the product of the inclusion of zeolite and  palm oil compost in urea needs to be studied to determine its appropriate dose for the growth and yield of shallots and N substitution. This pot experiment was conducted from October to December 2020 at the Teaching and Research Field of Agriculture Faculty and consisted of five treatments arranged in a completely randomized design with five replications. The treatments were (1) 1.0 g urea, (2) 0.5 g urea + 1.15 g OMF, (3) 0.5 g urea + 2.30 g OMF, (4) 0.5 g urea + 3.45 g OMF, and (5) 0.5 g urea + 4.60 g OMF. The results showed that combined application of 0.5 g urea + 4.60 g OMF produced the highest values of plant height (30.60 cm), number of leaves (30.90), fresh weight of tubers per clump (30.90 g),  dry tuber weight per clump (24.3 g), and tuber diameter (16.25 mm). The incorporation of zeolite and palm oil compost in urea reduced the application rate of urea up to 50% without reducing the growth and yield of shallot. Thus, N fertilizer use can be enhanced if urea is co-applied with zeolite and palm oil compost.
Performance of Lettuce (Lactuca sativa) Grown under Ultisol Subsoil with Chicken Manure and Dolomite Viani, Reza Junita Okta; Handajaningsih, Merakati; Suprijono, Eko; Marwanto
Akta Agrosia Vol 27 No 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.1.1-6

Abstract

Lettuce is a horticultural plant with a short harvest time that is a popular vegetable choice for planting in polybags in urban areas. Planting media for cultivating plants in  polybags vary widely. The use of nutrient-poor and acidic subsoil in Ultisols as a planting medium requires additional organic matter and lime that are suitable for the plants. This study evaluated the use of subsoil as a medium for growing lettuce by adding เว็บสล็อต | R4shub chicken manure and dolomite. The Completely Randomized Design was used, which consisted of two factors and 6 replications. The first factor was the dose of chicken manure consisting of: 0 ton/ Ha, 10 tons/Ha (38g /polybag), 20 tons/ Ha (76g/ polybag), and 30 tons/ Ha (115g /polybag). The second factor was the dolomite dose, consisting of no dolomite, 1xAl-exch, and 2xAl-exch. A dose of 20 tons /Ha of chicken manure combined with   1xAl-dd of dolomite increased the growth of plants. The treatment of chicken manure at 20 tons/Ha showed growth and yield of lettuce that were as good as a treatment dose of 30 tons/ Ha. The highest fresh weight (123.05g) was obtained from 30 tons/Ha-chicken manure treatment. The appropriate dose of dolomite for lettuce growth and yield was 1xAl-exch, which resulted in a plant fresh weight of 121.12 g. Subsoil is suitable to be used as a medium for planting lettuce in polybags by adding chicken manure or dolomite.  Keywords: organic matter, marginal soil, leafy vegetable, container veg production
Evaluation of the Growth and Yield of Hydroponically Grown Bell Pepper at Low Altitudes Nabila, Athya Kania; Herison, Catur; Fahrurrozi; Suharjo, Usman Kris Joko; Handajaningsih, Merakati; Rustikawati
Akta Agrosia Vol 27 No 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.1.19-26

Abstract

Bell pepper cultivation in low-altitude regions of Indonesia holds significant promise because of increasing domestic and international demand. However, domestic production is not sufficient to meet market needs. This study investigates hydroponic cultivation as a potential solution to low-altitude agriculture. Conducted from November 2023 to January 2024 at the University of Bengkulu Greenhouse เว็บสล็อต | R4shub (10 meters above sea level), the research evaluated the performance of nine bell pepper cultivars using a single-factor completely randomized design (CRD) with three repetitions. The cultivars tested were Red Star F1, Cardinal Star, Hercules, Merah, Yellow Star F1, Golden Star F1, Polaris F1, Orange Bell F1, and Kuning. Results indicated that the Cardinal Star and Polaris F1 cultivars outperformed the others under low-altitude conditions, demonstrating superior growth and yield components. Cardinal Star exhibited the highest fruit weight per plant, whereas Polaris F1 had the highest weight per fruit or fruit size. Key word:  bell pepper, hydroponics, low altitude areas
Enhancing Nitrogen Use Efficiency, Growth, and Biomass Yield of Pak Choy on Coastal Entisols with a Combination of Reduced Nitrogen Fertilizer and Zeolite-Based Slow-Release Fertilizer Resti , Cynthia; Marwanto, Marwanto; Handajaningsih, Merakati
Akta Agrosia Vol 27 No 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.2.52-63

Abstract

Coastal sandy soil has a low capacity to hold water and nutrients, trigerring high doses of fertilizer application. Therefore, this study aims to determine the optimal mixture of urea and zeolite-based slow-release fertilizers (SRF) that can reduce application of inorganic fertilizer while improving nitrogen use efficiency (NUE), growth dynamics, and yield of pak choy cultivated on coastal Entisols เว็บสล็อต. This research was conducted from October to December 2023 in the Plant and Soil Research field  on the outskirts of the Bengkulu University campus. The treatments used were a combination of urea and SRF, consisting of 0% N-Urea, 100% N-Urea, 75% N-Urea + 25% N-SRF, 50% N-Urea + 50% N-SRF, 25% N-Urea + 75% N-SRF, and 100% N-SRF. The study was set up in a completely randomized design with five replications. The results demonstrated that the treatments enhanced the growth and biomass yield of pak choy, as well as NUE. The combination of 50% N-Urea + 50% N-SRF (equal to 200 kg urea ha-1 + 608.5 kg SRF ha-1) resulted in higher leaf area, fresh shoot weight, dry shoot weight, fresh plant weight, N- uptake, and NUE compared with the application of 100% N-Urea (400 kg urea ha-1). The NUE for the combination of 50% N-Urea + 50% N-SRF was 36.36%, which was 13.63% compared to 100% N-Urea with an NUE of 34.09%. Therefore, using this SRF allows for a reduction in urea requirements by up to 50%.NUE and nitrogen uptake show a very high positive association (r=0.941, p<0.01). Keywords: inorganic nitrogen fertilizer, slow- release fertilizer, coastal sandy soil, activated zeolite matrix
Effect of Incubation of Goat Manure on Growth and Yield of Sweet Corn Saputra, Dedi; Handajaningsih, Merakati; Hermawan, Bandi
Akta Agrosia Vol 20 No 2 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (800.22 KB)

Abstract

ABSTRACTGoat manure is one of organic fertilizers used as the main input in organic farming practice in Indonesia.  Since the slower availability of  nutrient elements to the plants is the characteristic of this manure compared to the other manures, then research on the time of incubation needs to be evaluated.  The study was conducted  in Medan Baru Fields Experiment, district Muara Bangkahulu Bengkulu city. Randomized Complete Block Design was arranged for the experiment. Time incubation of goat manure in the field was single factor consisted of  no incubation, 1 week before planting, 2 weeks before planting, 3 weeks before planting, and 4 weeks before planting.  As much as 20 tons/ha  of  goat manure was incorporated in the field, no additional inorganic fertilizer was applied on sweet corn plants var. Bonanza F1.  The sweetcorn plants responded better growth to treatment 4 weeks incubation of goat manure compared to treatment of no incubation. Yet incubation time of goat manure showed no  significant effects on sweet corn yieldKeywords: incubation,goat manure, sweet corn, growth, yield 
Co-Authors ,, Rustikawati . Hasanudin . Hasanudin . Riwandi . Riwandi A.A. Ketut Agung Cahyawan W Ali Munawar Ali Munawar Armitasari, Tri Atra Romeida Bambang Gonggo Murcitro Bambang Purnomo Bandi Hermawan Bustaman, Hendri Bustaman, Hendri Catur Herison Chiristiana Dedi Saputra Dwi Wahyuni Ganefianti Dwi Wahyuni Ganefianti, Dwi Wahyuni EDHI TURMUDI Eko Suprijono ENTANG I. SUKARJO Fahrurrozi Fahrurrozi Fahrurrozi Haquarsum, Eka J.V. Hartal, Hartal Hasanudin Hasanudin Hendri Bustamam Herison, Catur Hermansyah Hermansyah Hery Widijanto HESTI PUJIwATI Hidayat Hidayat Inoriah, Entang Joko Suharjo, Usman Kris Manullang, Yedija Marlin Marulak Simarmata Marwanto Marwanto Marwanto Marwanto Marwanto Marwanto Marwanto, Marwanto Mimi Sutrawati Mucitro, Bambang G. Muhammad Tegar Putra Bahari Murcitro, Bambang G Nabila, Athya Kania Nasiroh, Nasiroh NORMA LIDIAWATI Nursalim Nursalim Pratiwi Pratiwi Rajagukguk, Natalia Reny Herawati Resti , Cynthia Riwandi, . Riwandi, Riwandi Romadhan, Tantrie D Rustikawati Rustikawati Rustikawati Septiana Anggraini, Septiana Suharjo, Usman K.J. Suharjo, Usman Kris Joko Sumbayak, Roy S.O. Supanjani, Supanjani Supanjani, Supanjani Syakia Kurin, Aricha Teguh Adiprasetyo Tri Mauli, Emilda Tri Utami Umi Salamah Usman Siswanto Venti Novita Sari Viani, Reza Junita Okta Wati, Shinta Puspita Widodo Widodo