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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vegetalika Jurnal Ilmu Pertanian Journal of Tropical Soils Berkala Ilmiah Pertanian Agrointek Proceeding International Conference on Global Resource Conservation Journal of Tropical Biodiversity and Biotechnology Biosaintifika: Journal of Biology & Biology Education jurnal Ilmu Pertanian (Agricultural Science) JURNAL AGRI-TEK Makara Journal of Science
Didik Indradewa
Dosen Fakultas Pertanian Universitas PGRI Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Environmental Science Health Professions Immunology & microbiology Other

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Effect of Poultry Manure and Vertisols Matter on Availability and Leaching of Macronutrients in Coastal Sandy Soil Purwantono, Anung Slamet Dwi; Indradewa, Didik; Sudira, Putu; Kertonegoro, Bambang Djadmo
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.v16i1.17-24

Abstract

The poultry manure and vertisols matter have potency for reclaiming a soil. The research objectives was to study the effect of poultry manure (PM) and vertisols matter (VM) on availability and leaching of macro nutrient in coastal sandy soil treated by rainfall simulation. A laboratory experiment was conducted with lesymeters to measure nutrient leaching. The factorial 4 × 4 treatment applied was arranged by randomized completely block design with three replications. The first factor was level of PM consisted of 0, 20, 40, and 60 Mg ha-1. The second one wasthe level of VM consisted of 0, 5, 10, and 15%. Variables observed were soil physical and chemical properties such as bulk density (BD), particle density (PD), porosity, pF 2.54, pF 4.2, available water capacity (AWC), permeability, cation exchange capacity (CEC), available macro nutrients (N, P, K, Ca, Mg, and S) by Morgan Wolf extraction, and the rate of macro nutrient leaching measuared by Spectrophotometry and Atomic Absorption Spectrophotometry. Result of the research showed that application of PM and VM in the sandy soil decreased soil PD and BD, increased soil porosity and AWC, decreased soil permeability, and slightly increased soil CEC. Application of PM and VM increased soil available nutrient in the sandy soil. Up to 60 Mg ha-1 dose PM increased soil available nutrient, while 10 to 15% dose, VM did not increased it. The rank of nutrient leaching from high to low by rain simulation was N-NO3 -> SO4 = > K+ > Ca2+. Leaching of K and N-NH4+ could be reduced by soil amendment. Combination of PM 60 Mg ha-1 and VM 10% was the best soil amendment for increasing nutrient availability and decreasing nutrient leaching in the sandy soil.Keywords: available nutrient, coastal sandy soil, leaching, poultry manure, vertisols matter
Use of Ameliorants to Increase Growth and Yield of Maize (Zea mays L.) in Peat Soils of West Kalimantan Suswati, Denah; Sunarminto, Bambang Hendro; Shiddieq, Dja’far; Indradewa, Didik
JOURNAL OF TROPICAL SOILS Vol. 19 No. 1: January 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i1.35-41

Abstract

Peatland in Indonesia has a potential for maize cultivation, but it has constraints that low of soil pH and of nutrient availability. Use of ameliorants from coastal sediment and salted fish waste was an alternative to improve peatlands productivity and maize yields. Objective of the study was to examine effects of coastal sediment and salted fish waste on growth and yield of maize at three kinds of soil of peatlands of Kubu Raya, West Kalimantan. This research was conducted  in  field  using  Inter-area analysis  design.  The  first  factor  was  combination  of  each ameliorants  which consisted of 5 levels, namely: 1) treatment under farmer custom at the sites (control); 2) coastal sediment of 20 Mg ha-1 + 0.75 Mg of salted fish waste ha-1; 3) coastal sediment of 40 Mg ha-1 + 1.5 Mg of salted fish waste ha-1, 4) coastal sediment of 60 Mg ha-1 + 2.25 Mg of salted fish waste  ha-1. The second factor was soil types which consisted of three levels, namely: Typic Haplohemists, Typic Sulfisaprists and Typic Haplosaprists. Each treatment was repeated 5 times. The results showed that combination of 40 Mg ha-1 of coastal sediment and 1.5 Mg ha-1 of salted fish waste was the best combination for all soil type. It increased plant height (33% - 44%), shoot dry weight (74% - 75%), number of seeds per cob (31% -110%), weight of 100 seeds (58% -71%) and dry grain weight per plant (136 % -160 %) at each soil. The highest yield was found in soil of Typic Haplosaprists (219.54 g), followed by Typic Sulfisaprists (210.72 g) and Typic Haplohemists (208.82 g).Keywords: Coastal sediment, maize, peat soils, salted fish waste [How to Cite: Denah S, BH Sunarminto, D Shiddieq and D Indradewa. 2014. Use of Ameliorants to Increase Growth and Yield of Maize (Zea mays L.) in Peat Soils of West Kalimantan. J Trop Soils 19: 35-41. Doi: 10.5400/jts.2014.19.1.35]    
Chitosan coating and packaging to maintain the physical quality of beet tubers Garusti, Garusti; Indradewa, Didik; Handayani, Valentina Dwi Suci; Putra, Eka Tarwaca Susila; Nurwita, Ardian
AGROINTEK Vol 19, No 3 (2025)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v19i3.26880

Abstract

Beet tubers are perishable horticultural commodities, cannot be stored for long, and are commonly consumed in fresh conditions. Postharvest handling of beet tubers needs to be carried out to maintain their freshness Chitosan and other packaging used in postharvest handling of fresh beet tubers have not yet been reported. This study aims to determine the effect of chitosan coating and types of packaging on beet tubers on the physical quality of beet tubers. The study was a randomly designed group with two factors; the first factor was chitosan concentration, and the second factor was the kinds of packaging. Chitosan concentration consists of 5 levels, namely 0, 0.5%, 1%, 1.5%, and 2%, and the type of packaging includes no packaging (Without), plastic packaging with holes (Perforated), ordinary plastic packaging (Ordinary) and plastic vacuumed (Vacuum). The beet tubers were soaked in chitosan solution of 0, 0.5%, 1%, 1.5%, and 2% for 1 minute, air-dried, then were packaged with no packaging, plastic packaging with holes, ordinary plastic packaging, and plastic vacuumed. .  The physical quality parameters observed were moisture content, weight loss respiration rate,electrolyte leakage, total dissolved solid (TDS), ascorbic acid, betacyanin, betaxanthins,  tuber firmness, damage percentage, and visual quality rating (VQR). Data were analyzed using Anova variant analysis and then continued with Tuckey tests with a 95% confidence level using R studio software. The results showed that chitosan coating did not affect the physical quality of beet tubers, while packaging affected the quality of beet tubers. The most suitable packaging to maintain the physical quality of beet tubers is plastic packaging with holes (perforated).
Modifikasi Pertumbuhan Bunga Matahari (Helianthus annuus L.) sebagai Tanaman Hias Pot dengan Aplikasi Paklobutrazol Trisnaningtyas, Carenina; Indradewa, Didik; Purwantoro, Aziz
Vegetalika Vol 13, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.78335

Abstract

Paklobutrazol merupakan zat pengatur tumbuh yang berfungsi menghambat pertumbuhan vegetatif tanaman dan banyak digunakan untuk mengurangi tinggi tanaman khususnya pada tanaman hias pot. Tanaman hias pot memerlukan keragaan batang yang pendek sehingga penelitian ini bertujuan untuk mempelajari pengaruh aplikasi paklobutrazol terhadap pertumbuhan dan kualitas tanaman bunga matahari serta menentukan aplikasi paklobutrazol terbaik dalam menjadikan tanaman bunga matahari sebagai tanaman hias pot. Penelitian dilaksanakan pada bulan November 2021 – April 2022 di Kebun Kursus Pertanian Taman Tani, Kota Salatiga. Penelitian menggunakan Rancangan Faktorial 3 x 3 + 1 yang diatur dalam Rancangan Acak Kelompok Lengkap dengan tiga blok sebagai ulangan. Faktor pertama adalah konsentrasi paklobutrazol dengan 3 aras yaitu 100 ppm, 200 ppm, dan 300 ppm. Faktor kedua adalah frekuensi aplikasi paklobutrazol dengan 3 aras yaitu 4 kali (selang aplikasi 14 hari sekali), 5 kali (selang aplikasi 10 hari sekali) dan 6 kali (selang aplikasi 7 hari sekali). Aplikasi paklobutrazol dilakukan dengan cara penyiraman langsung pada media tanam selama fase vegetatif tanaman yaitu 2 – 8 mst. Data yang diperoleh diuji menggunakan analisis varian faktorial dan kontras orthogonal. Apabila hasil berbeda nyata dilakukan uji lanjut dengan uji HSD-Tukey α5%. Hasil penelitian menunjukkan bahwa aplikasi paklobutrazol menghambat pertumbuhan vegetatif dan proses pembungaan tanaman yang menghasilkan tanaman bunga matahari pot dengan keragaan tanaman pendek, berbunga tunggal, berukuran sedang, berwarna kuning cerah kontras dengan daun yang berwarna hijau gelap yang berukuran kecil dan tersusun rapat. Aplikasi paklobutrazol konsentrasi 300 ppm dengan frekuensi 4 kali (selang aplikasi 14 hari sekali) mampu menjadikan bunga matahari sebagai tanaman pot dengan tinggi dan diameter bunga terbaik sesuai kriteria tanaman pot varietas acuan.
Lebar Bedengan untuk Genangan dalam Parit pada Tanaman Kedelai Indradewa, Didik; Sastrowinoto, Soemartono; Notohadisuwarno, Supriyanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 3 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.384 KB) | DOI: 10.24831/jai.v30i3.1418

Abstract

saturated soil culture the width of the beds were recommended between I m and 2 m, which require more labor to dig the furrows. An experiment was done to study the effect of the width of beds and to determine the optimal bed's width. The experiment was done on Regosol soil in Sleman Regency, Yogyakarta using Randomized Complete Blocked Design with three blocks. The treatments were flood irrigation as control and saturated soil culture with I, 2, 3 and 4 m . wide of beds. Observations were done on soil moisture, physiological processes, growth and yield of soybean. The result of the experiment showed that saturated soil culture stabilized the soil moisture around field capacity, increased physiological processes, growth of the plant and increased the seed yield 81 %from 1.17 t ha-1 up to 2.12 t ha-l. There was no significant different on the effect of width of the beds, therefore 3-4 m bed's width was recommended. Keywords: Saturated soil culture, Soybean, Bed's width.
Pengelompokan Genotipe Jarak Pagar Berdasarkan Ketahanannya terhadap Kekeringan pada Fase Pembibitan di Lahan Pasir Pantai Parwata, I Gusti Made Arya; Indradewa, Didik; Yudono, Prapto; Kertonegoro, Bambang Djadmo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.724 KB) | DOI: 10.24831/jai.v38i2.1801

Abstract

Extension of jatropha planting on coastal sandy soil is an effort to look for an alternatif area to other soil types, this experiment is one of a series experiment aiming to classify jatropha based on their drought resistance, and to determine watering interval causing drought stress. The experiment was arranged using Split Plot Design with watering interval (once in 1, 3, 5, 7, and 9 day (s)) as main plot, and jatropha genotypes (IP-1A, IP-1M, IP-1P, IP-2A, IP-2M, IP-2P, Unggul Lokal (NTB), Gundul and Daun Kuning) as sub plot. The seeds of genotypes were planted in black polybag with coastal sandy soil media. The parameters observed were plant height, stem diameter, number of leaf, leaf width and plant dry weight, and the data collected were analyzed using Analysis of Variance, DMRT, Regrression and Cluster Analysis. The result showed that IP-1A, IP-2M, Gundul and IP-1M are the resistant genotypes, whereas Unggul Lokal, Daun Kuning, IP-2A and IP-2P are the susceptible genotypes. Once in one and three day (s) are optimum watering intervals, and once in nine days is a watering interval causing drought stress. Keywords : jatropha, drought, watering, coastal sandy soil
Respon Pertumbuhan dan Hasil Tanaman Jarak Pagar (Jatropha curcas L.) terhadap Cekaman Kekeringan di Lahan Pasir Pantai pada Tahun Pertama Siklus Produksi Parwata, I Gusti Made Arya; Indradewa, Didik; Yudono, Prapto; Kertonegoro, Bambang Djadmo; Kusmarwiyah, Rukmini
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 1 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.077 KB) | DOI: 10.24831/jai.v42i1.8152

Abstract

ABSTRACTDevelopment of Jatropha, an important tropical biofuel crop, to coastal sandy soil is an urgent situation due to more limited of fossil fuel in one side, and high potency of coastal sandy land that has not been utilized yet. Tolerant and sensitive genotypes of Jatropha were treated with drought stress using watering interval, and their responds on the vegetative growth and yield were studied in this reasearch. Drought stress significantly decreased all vegetative growth parameters observed, except the number of branch. Different jatropha genotypes had different number of branch, number of leaf, root surface area, total of root length, root diameter, plant dry weight, shoot root ratio and light absorption. IP-1A genotype had the highest yield, i.e 33.54 g of dry seed plant-1 (equal to 0.15 ton ha-1), in the first year.Keywords: biofuel, sand, watering
Evaluation of Wedelia water extract on soybean, purple nutsedge, and billygoat seeds germination Respatie, Dyah Weny; Purwantoro, Aziz; Indradewa, Didik; Uyun, Qurrotul; Hafidhotul Ilmiah, Haviah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.56918

Abstract

Weeds cause significant yield loss in many agriculture crops; thus, management practices are urgently needed to alleviate losses while conserving environmental and human health. This study aimed to evaluate the allelopathic potential of Wedelia leaf and flower extracts on the germination and early growth stage of three plant species. The research was conducted using a completely randomized design experiment with two factors and four replicates. The first factor was extract sources: leaves (S1) and flowers (S2). The second factor was the concentration: control (C0) and extract concentrations of 1% (C1), 5% (C5), and 10% (C10). The extract was tested on three different plant species: soybean (Glycine max), nutsedge (Cyperus rotundus), and billygoat weed (Ageratum conyzoides). Fifty seeds of three different plants were germinated separately in Petri dishes and treated using Wedelia extracts. The allelochemicals in Wedelia leaf and flower extracts inhibited germination and induced abnormal sprouting. Wedelia leaf extract showed the most pronounced inhibitory effects and highest inhibition levels across all measured parameters. Moreover, a clear concentration-response relationship was observed, where increased extract concentration increased the degree of inhibition. These findings contribute to the development of bioherbicides and can help reduce the use of synthetic herbicides for more sustainable agriculture. Keywords: Ageratum conyzoides, bioherbicide, Cyperus rotundus, Glycine max, weed control
Seed priming boosted waxy corn yield across different water regimes Nganggo, Mariano Trivandy Ngasu; Indradewa, Didik; Rofiqo Irwan, SIti Nurul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 1 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i1.62047

Abstract

Plant resistance to drought stress could be improved by seed priming using natural plant growth regulators, such as coconut water. This research aimed examine the physiological characteristics, root development, and yield responses of waxy corn following different seed priming treatmens using coconut water and to determine to the optimal coconut water concentration for seed priming under each drought condition. The research was conducted at Banguntapan Sub-district and Laboratory of the Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta - Indonesia, in July-October 2023. The research used a split-plot design with a main plot of watering intervals and a subplot of coconut water concentration with three replications. The main plot consisted of three levels: watering every day, once every three days, and once every six days. The subplot consisted of four levels of coconut water concentrations, i.e., 0, 33, 67, and 100%. The results indicated that seed priming with 100% coconut water increased corn yield. The increased yield could be attributed to the different photosynthetic rates and total seed weight under both well-watered and drought-stress conditions. Keywords: coconut water; drought stress; root improvement
Co-Authors Aziz Purwantoro Bambang Djadmo Kertonegoro Bambang Hendro Sunarminto Bambang Hendro sunarminto Denah Suswati Dja’far Shiddieq Dyah Weny Respatie Edhi Martono Eka Tarwaca Susila Putra Ernitha Panjaitan Garusti, Garusti Hutabarat, Renata Caprina Samantha Mahadewi I Gusti Made Arya Parwata Ilmiah, Haviah Hafidhotul JAKA WIDADA Junun Sartohadi Nganggo, Mariano Trivandy Ngasu Nurwita, Ardian Prapto Yudono Purwantono, Anung Slamet Dwi Putu Sudira Qurrotul Uyun, Qurrotul Ratna Dewi Eskundari Rukmini Kusmarwiyah Shiddieq, Dja’far Siti Nurul Rofiqo Irwan Soemartono Sastrowinoto Suhartiningsih Dwi Nurcahyanti Supriyanto Notohadisuwarno Taryono, Taryono Trisnaningtyas, Carenina Triwidodo Arwiyanto Ulfah, Fajarani Valentina Dwi Suci Handayani Winarni, Marti Yekti Asih Purwestri