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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmu Pertanian Agroland : Jurnal Ilmu-Ilmu Pertanian Jurnal Lahan Suboptimal Jurnal Hortikultura Jurnal Konstruksia AGRIVITA, Journal of Agricultural Science Kultivasi Jurnal Sains Teh dan Kina Jurnal Penelitian Pertanian Tanaman Pangan Rancang Bangun Journal of Tropical Crop Science jurnal Ilmu Pertanian (Agricultural Science) Al-Awqaf: Jurnal Wakaf dan Ekonomi Islam Media Pertanian Mabsya: Jurnal Manajemen Bisnis Syariah Jurnal Agronomika Jurnal Ilmiah Teknik Sipil (JIMATS)

Dwi Guntoro

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, IPB University, Kampus IPB Darmaga, Bogor 16680

Author-ID : 271099

Religion Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Articles

Title

The Role of Biomulch Arachis pintoi In Increasing Soil Infiltration Rate on Sloping Land of Oil Palm Plantation Sarjono, Arif; Guntoro, Dwi; Supijatno, Supijatno
Journal of Tropical Crop Science Vol 5 No 3 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The slope of land in oil palm plantation areas is the one of the primary causes of low soil water content due to low rates of soil infiltration. Biomulch is one of the conservation methods that can be used to cover and shield the soil from weeds, prevent soil erosion, and increase the rate of soil infiltration. Arachis pintoi is a perennial, stoloniferous legume crop that has potentials to be used as biomulch. The objective of the research was to study the role of Arachis pintoi in increasing the rate of soil infiltration on a sloping land of oil palm plantation. The research was conducted on the slope land (22.8%) of the Bukit Kemuning Farmer Group, Mersam, Batanghari, Jambi, Indonesia (01036'21", 102057'11") from September 2017 to March 2018. The environmental design used in this study was a one-factor randomized block design (RBD) with five ground cover treatments, i.e. natural vegetation, Arachis pintoi, Centrosema pubescens, Pueraria javanica and Calopogonium mucunoides. The results showed that the average growth rate of A. pintoi was 2.47 cm per week, which was lower than the growth of other treatments. The root length of A. pintoi was 50.36 cm at 20 weeks after planting. A. pintoi can be used as biomulch; sloping land planted with A. pintoi had an infiltration rate of 49.30 cm per hour at 20 week after planting, i.e. an increase of 32.47% compared to the infiltration rate with the natural vegetation.Keywords: land cover crop, Centrosema pubescens, Pueraria javanica, Calopogonium mucunoides

Weed Growth and Lowland Rice Production as Affected by Planting Patterns and Rice Varieties Rianto, Dwi Fajar; Guntoro, Dwi; Santosa, Edi
Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Weeds are one of the most limiting factors in rice cultivation. This study aims to evaluate the eff ects of rice planting patterns on the prevalence of several weed species, Cyperus iria, Echinochloa crusgalli, Fimbristylis miliacea, Leptochloa chinensis, Ludwigia octovalvis, and Spenoclea zeylanica, and to discuss the implications on rice production systems. The research was conducted in IPB Sawah Baru experimental farm in Bogor, West Java, Indonesia, from December 2017 to April 2018. The experiment was arranged in a randomized block design with two factors, rice varieties and rice planting methods. The rice varieties, “IPB 3S” and “Ciherang”, were assigned as the main plot, whereas planting methods, i.e. 25x25 tile, Legowo 2:1 (double rows), Legowo 4:1 (quadruple rows), as sub-plots. The results showed that in the “IPB 3S” plots L. octovalvis shoot dry weight decreased by 33.0%, the root dry weight of L. chinensis roots decreased by 22.6%, and the number of S. zeylanica weed leaves decreased by 28.4% compared to the plots planted with “Ciherang”. With legowo 2:1 planting method the dry weights of L. octovalvis decreased by 21.5%, L. octovalvis by 1.7%, and L. chinensis by 4.4%, and the number of weeds E. crus-galli by 7.0 % compared to Tegel 25x25 method. L. chinensis seemed to be a dominant weed at both vegetative and generative stage of rice development.

Genetic Variability of Echinochloa crus-galli Ecotypes from West Java, Indonesia, by RAPD Analysis Pasaribu, Pesta Maria Hotnauli; Rizqullah, Ramadaniarto; Ardie, Sintho Wahyuning; Guntoro, Dwi
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.18-24

Echinochloa crus-galli (Barnyardgrass: Poaceae), is one of the most detrimental weeds in rice fields globally. As one of the leading rice producers in Indonesia, controlling barnyard grass in rice fields in West Java province is of great importance. Information on the genetic variability of barnyard grass is necessary to determine proper weed control. A molecular marker is considered the most accurate tool in determining genetic variability as its profile is unaffected by the environment. The objective of this study was to evaluate the genetic variability of barnyard grass collected from seven sub-districts in West Java province, Indonesia, using RAPD markers. Genomic DNA of barnyard grass ecotypes from “Bayusari”, “Majalaya”, “Klari”, “Cugenang”, “Cianjur”, “Ciomas”, and “Ciampea” sub-districts were analyzed using eight RAPD primers and resulted in a total of 87 reproducible amplicons. Of these amplicons, 59 were polymorphic, and 28 were monomorphic, with a polymorphism percentage ranging from 37.5-92.8%. Polymorphism information content (PIC) values ranged from 0.21 to 0.41, indicating the used RAPD markers are highly informative. All seven ecotypes were divided into three distinct groups with a coefficient level of 0.77 in a dendrogram constructed following the UPGMA clustering method. Group 1 consisted only of the “Bayusari” ecotype. Group 2 consisted of “Majalaya”, “Klari”, and “Cugenang” ecotypes, while Group 3 consisted of “Cianjur”, “Ciomas”, and “Ciampea” ecotypes. This research indicated remote dispersal of E. crus-galli, since ecotypes from distant locations were found to be closely related

Forage Potential of Plant Species Found in Various Ecosystems in Musi Banyuasin Regency, South Sumatera, Indonesia Kanny, Putri Irene; Chozin, M.A.; Santosa, Edi; Guntoro, Dwi; Zaman, Sofyan; Suwarto, Suwarto; Kurniawati, Ani
Journal of Tropical Crop Science Vol. 9 No. 01 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.01.68-76

Forage is an important component in sustainable smallholder livestock. The purpose of the study was to identify the diversity of natural plant species in various ecosystems, as well as their potential as forage. Based on our surveys of palm oil plantation, rubber plantation, and home gardens using the quadrant method, we identified approximately 50 species comprising the natural vegetation of our study area. Out of 50, we identified 39 broad-leaved species, 9 grasses (Poaceae) species, and 2 sedges (Cyperaceae) species. The palm oil plantation had 29 species dominated by Ottochloa nodosa (11.92%) and Asystasia gangetica (11.40%); 25 species were found in the rubber plantation dominated by Cynodon dactylon (28.42%) and Panicum repens (9.20%), and home gardens contained 30 species dominated by Eleusine indica (13.39%) and Ageratum conyzoides (9.60%). Among the 29 species found in the palm oil plantation, 13 were observed to have low palatability scores, and 16 species have high palatability scores. Based on their high palatability scores, the following species can be utilized as forage for Balinese cattle: Cyrtococcum acrescens, Eleusine indica, Centrosema pubescens, Paspalum conjugatum, and Sida rhombifolia.

Sulfonylurea Herbicide-Resistant Study on Broadleaf Weeds in The Lowland Rice Production Center in West Java, Indonesia Evar, Fitrawaty Orista; Guntoro, Dwi; Chozin, M. A.; Irianto, M. Yuli
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.137-144

Most rice growers in Indonesia use herbicides for weed control. However, intensive use of herbicides can lead to the weeds to become resistant to the chemicals. The objective of this study was to determine the resistance status of weeds Ludwigia octovalvis, Sphenoclea zeylanica, Monochoria vaginalis in lowland rice in West Java, Indonesia. The study was started by planting three species of weeds, L. octovalvis, S. zeylanica, M. vaginalis, which were then treated with metsulfuron-methyl and penoxsulam herbicides. The study was conducted from January to May 2020 at Cikabayan Experimental Greenhouse, IPB University. The experiment was arranged in a randomized complete block design with four replications. The first factor was the origin of weeds, exposed weeds (Karawang and Subang), and not exposed to herbicides (Bogor); the second factor was the rates of the herbicide, i.e., 0, 2.5, 5, 10, 20, 40, 80 and 160 g. ha-1 for metsulfuron- methyl, and 0, 50, 100, 200, 400, 800, 1600, and 3200 ml.ha-1 for penoxsulam. The results showed that based on the resistance ratio, S. zeylanica and M. vaginalis from Karawang and Subang, and L. octovalvis from Subang, indicated a low resistance to metsulfuron-methyl, L. octovalvis from Karawang was still sensitive to metsulfuron-methyl. L. octovalvis, S. zeylanica, and M. vaginalis from Karawang and Subang were still sensitive to penoxsulam herbicides. This information would be useful to develop a strategy of weed management for important food crops.

Biomulch Treatment Effects on Weed Control and Soil Properties in Cassava Plantation Suwitono, Bayu; Chozin, Muhamad Achmad; Guntoro, Dwi; Suwarto, Suwarto
Journal of Tropical Crop Science Vol. 10 No. 02 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.02.111-123

Legume Cover Crop (LCC) are plants grown as live mulch so that it is beneficial to the agro-ecosystem and can be included in cropping systems to regulate soil fertility and suppress weed growth. This study aims to determine the benefits of using Arachis pintoi as biomulch applied at different times on weed composition and soil fertility. The experiment was carried out at the Teaching farm of IPB, Jonggol, West Java, Indonesia; the soil type is Ultisol. This study used two factors and was designed in a factorial randomized block design. The first factor was four accessions of cassava “Ketan Malang”, “Genjah Bayam”, “IR Jonggol”, and “Manggu”; the second factor is the time of the biomulch planting: 4, 8, and 12 weeks before planting the cassava, at cassava planting, and without biomulch + manual weeding as the control. Weed vegetation was analyzed before land preparation and before cassava harvest. The physical and chemical properties of the soil were analyzed before and after the biomulch treatment. Our study demonstrated that Melastoma malabathricum, Tetracera indica, Oxalis barrelieri, Mimosa invisa, Ottochloa nodosa, Ipomoea sp and Cyperus sp. are the dominant weeds in the cassava plantation. Biomulch planted four and eight weeks before cassava was able to reduce weed dry weight. All biomulch treatments were able to improve soil density and total pore space. Soil with biomulch planted eight weeks before cassava planting had the highest C-organic (7.59%) and total nitrogen (0.41%).

Growth and Production of Cassavas in Intercropping System with Cowpeas Sinaga, Intan Lorenza; Suwarto, Suwarto; Purnamawati, Heni; Guntoro, Dwi
Journal of Tropical Crop Science Vol. 11 No. 02 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.02.128-136

Cassava is one of the most important commodities worldwide, serving as a crucial food source due to its rich content of nutrients such as carbohydrates, protein, fat, calcium, and magnesium. Cassava is a perennial crop with slow growth, necessitating the selection of intercrops with shorter harvest periods. Cowpea, a legume high in protein, is widely cultivated and suitable for intercropping with cassava. Intercropping these crops involves adjusting planting distances to optimize yield. This study aims to determine the optimal planting distance in an intercropping system that yields the highest productivity for the cassava variety “Mangu” and the cowpea varieties “Albina” and “Uno”. The research was conducted from January to June 2023 at the IPB Experimental Farm in Sawahbaru, Dramaga, Bogor, on Latosol soil, at an altitude of 207 meters above sea level. The study utilized a randomized complete block design with a single factor: the intercropping system pattern. The patterns tested were 1:2 (one row of cassava with two rows of cowpea) and 1:3 (one row of cassava with three rows of cowpea), consisting of: P1: “Mangu” and “Uno” 1:2; P2: “Mangu” and “Uno” 1:3; P3: “Mangu” and “Albina” 1:2; P4: “Mangu” and “Albina” 1:3; P5: “Mangu” monoculture; P6: “Uno” monoculture; P7: “Albina” monoculture. The results indicated that the P3 planting system yielded the highest crown height at 1, 5, and 6 months after planting (MAP), the highest canopy diameter at 4 months after planting, tuber production, and 100 seed weight of cowpea. The P4 system produced the highest stem diameter, number of leaves, number of pods, pod dry weight, and seed dry weight at 9 months after planting.

Utilization of Plasma Technology to Control Weed Seed Germination Bukhori, Anwar; Guntoro, Dwi; Sudradjat; Tri Sugiarto, Anto
Journal of Tropical Crop Science Vol. 11 No. 02 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.02.200-205

Efforts to reduce herbicide use include employing cold plasma technology, which produces heat energy from UV plasma rays using a combination of electrical power. This research aimed to determine the effectiveness of plasma technology in controlling weeds and to identify the optimal voltage and duration for using cold plasma technology to inhibit seed germination. The study was conducted at the Ecotoxicology Laboratory and Seed Propagation Laboratory of IPB in Bogor, Indonesia, from January to March 2023. It comprised two experiments: (1) testing the voltage and time duration of cold plasma technology and (2) examining the effect of electrode needle distance on mustard seeds. The first experiment followed a completely randomized design with plasma voltage and time duration as the treatments. The second experiment used a single-factor completely randomized design to investigate the electrode needle distance. Each experiment included four replications. The results indicated that a voltage of 140 kV with a duration of 80 seconds could suppress mustard seed germination by up to 100%. Additionally, using an electrode needle distance of 0.5 cm reduced the germination percentage of mustard seeds by up to 100% at 7 and 14 days after treatment.

Evaluating the Efficiency of Metsulfuron-Methyl: The Role of Rice Cultivation Practices in Controlling Monochoria vaginalis Kansa Dianti Putri; Guntoro, Dwi; Sintho Wahyuning Ardie; Hariyadi
Journal of Tropical Crop Science Vol. 11 No. 02 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.02.175-183

Monochoria vaginalis is an invasive weed that thrives in rice paddies across Indonesia. Herbicide control is challenging since Monochoria vaginalis is known to be sulfonylurea-resistant in Indonesian rice fields. This weed is highly competitive, with a rapid growth pattern that may diminish rice production. Metsulfuron-methyl, a widely used herbicide, can potentially eliminate sensitive weeds at low dosage levels. This study aimed to identify the optimal dosage of metsulfuron-methyl for controlling Monochoria vaginalis and assess the impact of monoculture rice growing patterns and herbicide application in controlling weeds. The experimental design was a split-plot design with four replications, conducted from June to July 2023 in the Cikabayan Greenhouse at IPB University. The major plot was the Monochoria vaginalis accession: exposed or not exposed to herbicide, consisting of seven sites. The subplot represented the dosage of the active ingredient (a.i.) metsulfuron-methyl: 0, 1, 2, 4, 8, 16, and 32 g.ha-1. In addition to the field experiments, interviews were performed with five farmers from each of the seven Monochoria vaginalis sample accessions to assess rice planting patterns and herbicide usage history. The results showed that metsulfuron-methyl at 1 g.ha-1 reduced weed populations by over 50% in rice accessions Bugel, Palumbonsari, and Ciasem Hilir. Variability in Monochoria vaginalis indicated resistance to metsulfuron-methyl, necessitating greater dosages up to 8 g a.i. per ha-1 for Pasirkaliki and Rancajaya accessions. Our study also indicated that some areas could use lower dosages of herbicides to effectively control Monochoria vaginalis. In contrast to other places that required larger, three-yearly dosages of 100 to 125 g.ha-1, Bugel, Palumbonsari, and Ciasem Hilir used a twice-yearly dosage of 20 g.ha-1. These findings highlight the importance of tailored herbicide application strategies based on local resistance patterns and historical herbicide use to manage Monochoria vaginalis effectively.

Co-Authors , Erinnovita , Purwono , Sarwono ,, Usman ,, Yuniarti -, Bachtiar . Yusak Abdul Harris Burhan Achmad Yozar Perkasa, Achmad Yozar Achmad Zakaria Achmad Zakaria Ade Sumiahadi Ade Sumiahadi, Ade Adolf Pieter Lontoh, Adolf Pieter AHMAD JUNAEDI Alghifari, Ahmad Fadli Anas Dinurrohman Susila Andreas Kefi Andriyani, Yuni Ani Kurniawati Anung Wahyudi Asrul Saputra Atang Sutandi Bachtiar Bachtiar Bambang S. Purwoko Bambang Sapta Purwoko Bilkis, Faras Gaitsa Budi Tjahjono Bukhori, Anwar Desembardi, Faried Desyandri Desyandri Dewi, Sangrani Annisa Dini Dwirestina Dita Nurul Latifah Dulbari, Dulbari Durotun Nafisa Dwiwanti Sulistyowati Dwiwanti Sulistyowati Edi Santosa Eko Sulistyono Eny Widajati Evar, Fitrawaty Orista Fahrul Rozy Pohan Faqih Udin Faried Desembardi Ferdinans, Ferdinans Fredinan Yulianda Harisman, Muhammad Ikhsan Hariyadi Herdhata Agusta Heri Syahrian Iqbal Iqbal Irawan, Riko Irdika Mansur Irianto, M. Yuli Jafarudin, Ahmad Januar Kanny, Putri Irene Kansa Dianti Putri Karlin Agustina Khalida, Rahmi Kukuh Nugraha Kusuma, Ayu Vandira Candra Luh Putu Ratna Sundari M A Chozin M. Khais Prayoga M.A. Chozin Mahfudz Mahfudz Manalu, Pinondang Maryati Sari Maya Melati Maya Melati Mia Audina, Mia Muhamad Achmad Chozin Muhamad Achmad Chozin Muhamad Ahmad Chozin Muhamad Syukur Muhammad Ahmad Chozin Muhammad Ridwan Muhammad Rusmin Muhammad Syukur Munif Ghulamahdi Muntoyib, Junaidi Murtilaksono, dan Kukuh Mutaqin, Enjen Zaenal Neshi Claudia Ramadhanti Norul Dewi Susanti Oktavian, Aldi Pasaribu, Pesta Maria Hotnauli Polansky, Seken Rianto, Dwi Fajar Rizqullah, Ramadaniarto Roudho, Zahrotur Rusdi, Achmad Sari, Indah Fatika Sarjono, Arif Sarjono, Arif Seken Polansky Simangunsong, Yosua Pratama Sinaga, Intan Lorenza Sintho Wahyuning Ardie SOEKISMAN TJITROSEMITO Sofyan Zaman Sudradjat SUGENG SUDIATSO Sugiyanta Sujinah Sujinah Sukmawati, Riska Sulistiani, Ade Irma Supijatno Suryana Suwarto Suwarto Suwitono, Bayu Tri Sugiarto, Anto Trisnani Yuda Fitri Trisnani Yuda Fitri Vitria Puspitasari Rahadi Wahyu Utomo Yaqin, Roelly Ainul Yonny Koesmaryono Yosua Pratama Simangunsong Yursida Yursida Yusak, . Zarwazi, Lalu Muhamad

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