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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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Pengaruh Pemberian Kompos Bagase terhadap Serapan Hara dan Pertumbuhan Tanaman Tebu (Saccharum officinarum L.) Guntoro, Dwi; Purwono, ,; Sarwono, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 31 No. 3 (2003): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The effect of bagase compost application on nutrient uptake and growth of sugarcane was studied at PG Jatitujuh. Majalengka, West Java, from October 1998 to March 1999. The experiment was arranged in split plot design with three replications. The bagase compost as sub plot and the recommended rate of inorganic fertilizer as the main plot. The rates of bagase compost were 0.0, 2.5, 5.0, and 7.5 ton/ha and the recommended rate of inorganic fertilizers were 100%, 75%, and 50% of recommended rate. The recommended rate of inorganic fertilizer was 300 kg Urea, 200 kg ZA, 150 kg SP-36, and 200 kg KCl/ha. The results showed that bagase compost application at 7.5 ton/ha significantly increased nitrogen uptake at 3 Month After Planting (MAP) compared to no compost, but did not affect P2O5, K2O and S. Lower rate of inorganic fertilizer decreased S uptake at 2 MAA, but did not affect N, P2O5 dan K2O. Combination of 5.0 ton/ha compost bagase with 100% recommended rate of inorganic fertilizer tended to increase sugarcane growth. Bagase compost application with inorganic fertilizer did not affect the percentage of growth, height, and diameter off stalk. Key words: Sugarcane, Bagase compost, Nutrient uptake

UJl HASIL KEPRASAN BEBERAPA VARlETAS TEBU LAHAN KERING PADA DAERAH BERIKLIM BASAH Purwono, ,; Sudiatso, Sugeng; Guntoro, Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 25 No. 1 (1997): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The study of first rationed sugar cane on wet climate region was carried out at Sindangbarang Bogor (belong to type A according Schmidt and Fergusson classification) from October 1993 to April 1994. The study was designed to fined out the yield and total-sugar content. Several cultivar of Ps 87 (produced by P3GI) were tested (Ps 87-985, Ps 87-21718, Ps 87-22189, Ps 87-22704, Ps 87-21781, Ps 87-22098, Ps 87-21781, Ps 87-21067), and Ps 58 as a control. The result showed that the Ps 87-22074 produced the highest yield (19.524,7 g/m "juring") and total-sugar content (13,16%) among the other.

Senyawa Fenol dari Tajuk dan Umbi Teki (Cyperus rotundus L.) pada Berbagai Umur Pertumbuhan serta Pengaruhnya terhadap Perkecambahan Gulma Berdaun Lebar Kusuma, Ayu Vandira Candra; Chozin, Muhammad Ahmad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 1 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Purple nutsedge (Cyperus rotundus L.) is noxious weed that contains allelochemicals which inhibit other plants germination, thereby it can be potentially used as bioherbicide. Laboratorium experiments were conducted to identify phenol compound in purple nutsedge’s shoot and tuber from three plant ages, and to study its effect on germination of Asystasia gangetica and Borreria alata. First experiment was single factor using descriptive method and the second experiment was arranged in completely randomized design with single factor. The first experiment treatments were shoot and tuber extracts of purple nutsedge from 1, 2, and 3 months after planting. The second experiment treatments were control, shoot, tuber, and all parts extracts of purple nutsedge from 1, 2, and 3 months after planting, with 3 replications. Data from the second experiment was analyzed using F test and followed by Tukey test 5%. Result showed that shoot extracts from 2 months after planting had the highest type of phenol compound namely 2-methoxy-4-vinylphenol; phenol,2,6-dimethoxy; 2-furanmethanol; and α-tocopherol. Tuber extract from 3 months after planting suppressed germination rate of A. gangetica about 54.72%. All parts extracts from 2 months after planting suppressed germination rate of B. alata about 60.98%. Purple nutsedge’s extracts inhibited growth of plumule and radicle of B. alata at 2 days after sowing. This showed that purple nutsedge’s extract gave different effects on different weed species.Keywords: allelochemicals, Asystasia gangetica, bioherbicide, Borreria alata, suppression

Evaluasi Pertumbuhan dan Perkembangan Arachis pintoi sebagai Biomulsa pada Budidaya Tanaman di Lahan Kering Tropis Sumiahadi, Ade; Chozin, M. Achmad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 1 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTCover crops is widely used as biomulch because of its advantages for land conservation, weed control and increasing soil nutrients, especially in upland agriculture. The objective of the research was to study the growth and development of Arachis pintoi as biomulch in upland agriculture. The experiment was carried out at IPB Experimental Field from February until May 2014. Observation was done everyweek up to 12 weeks with 10 plants were used for each observation. One stolon of A. pintoi with 4 internodes was planted in each 0.25 m2 plot. The results showed that root initiation of A. pintoi was occured at 3 weeks after planting (wap) and produced 42.4 roots with average root length of 17.10 cm on 12 wap.A. pintoi had nett assimilation rate of 0.0023 g cm-2 per day and relative growth rate of 0.052 g per day. With this growth rate, A. pintoi covered 58% of 0.25 m2 plot and produced biomass 10.08 g per plant within 12 wap. A. pintoi produced flowers on 4 wap and pods on 7 wap. A. pintoi produced root nodules through mutualism symbiosis with local Rhizobium. The equation for rate of coverage is Coverage (%) = 5.273 Time (wap)-16.512; 100% land coverage can be reached on 22 wap. Based on the results of this study, A. pintoi is potential to be used as biomulch; however, a denser spacing must be applied for faster land coverage.Keywords: land coverage, mulch, Rhizobium, stolon

Identifikasi Senyawa Fenol Beberapa Aksesi Teki (Cyperus rotundus L.) serta Pengaruhnya terhadap Perkecambahan Biji Borreria alata (Aubl.) DC. Dewi, Sangrani Annisa; Chozin, Muhammad Ahmad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 1 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Purple nutsedge (Cyperus rotundus L.) is one of the important weeds in the world because of its ability to suppress the production of crops and difficult to control. C. rotundus residues can suppress the growth of others weeds. The experiments were conducted to identify the phenolic compound of C. rotundus from six different accessions and to determine the allelopathic effects of C. rotundus extracts on germination of Borreria alata (Aubl.) DC. The identification of phenolic compound was done using extract from all part of mature C. rotundus taken from different accessions and was analyzed using GC-MS. Analysis of C. rotundus extracts on germination of B. alata was designed using completely randomized design with three replications. The treatments were extract of C. rotundus from different accessions (from Cikarawang-Darmaga, Babakan-Darmaga, Ciawi, Megamendung, Cisarua, and Cianjur) with different concentration, 0.75 kg L-1 and 1.5 kg L-1. The result showed that C. rotundus from six accession had phenolic compond with different amounts. Cianjur accesion contained the most phenol content such as 2-furanmethanol; 1,4-benzenediol; 2-methoxy-4-vinylphenol; phenol, 2,6-dimethoxy; syringic acid; and 3-hydroxybenzoic acid. Germination test showed that C. rotundus extracts from different accessions and concentration had the same inhibitory effect on germination of B. alata.Keywords: Allelopathy, bioherbicide, purple nutsedge, weed management

Toleransi Galur Harapan Padi Sawah (Oryza sativa L.) pada Persaingan dengan Gulma Echinochloa crus-galli ,, Usman; Purwoko, Bambang Sapta; Syukur, Muhamad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTBarnyard grass (Echinochloa crus-galli (L.) P. Beauv.) is a major weed competitor to rice production in Indonesia. In order to develop integrated weed management program, a research to select competitive rice lines to E. crus-galli was conducted in a green house of Indonesian Centre of Agricultural Biotechnology and Genetic Resource Research and Development Bogor. The research design was split plot with four replications, E. crus-galli was designed as the main plot (rice without E. crus-galli compared rice with four E. crus-galli per pot), and the sub-plots were 25 genotypes (23 lines, 1 tolerant variety and 1 sensitive variety). Level of tolerance was determined by the reduction percentage of grains weight, the number of productive tillers and dry matter weight. The results showed that rice competition with E. crus-galli reduced plant height, productive tiller numbers, filled spikelet numbers per panicle, dry matter weight and dry grain weight. Three lines, i.e., IR10L-155, IR10L-133 and BIO-R84-1 were classified as tolerant, 19 lines were moderate and 3 lines were sensitive to E. crus-galli competition.Keywords: Barnyard grass, competition, sensitive line, yield reduction

Potensi Gangguan Gulma pada Tiga Sistem Budidaya Padi Sawah Zarwazi, Lalu Muhamad; Chozin, Muhammad Achmad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTWeeds has become a big problem in system of rice intensification (SRI), integrated crop management (ICM) and conventional cultivation systems. The objective of the research was to study the dominancy and potential of harmful effect of weed in these three cultivation systems. The research was conducted at Sukamandi research station of Indonesian Center for Rice Research, Subang, from November 2013 to April 2014 during rainy season. The experiment was arranged in a split plot design with four replications. The cultivation systems was main plot consisted of system of rice intensification (SRI), integrated crop management (ICM) and conventional system. The weeding techniques as subplot consisted of no weeding, manual weeding, mechanical weeding and chemical weeding. The result showed that based on dry mass of weeds the highest risk of weed was exhibited at SRI with total dry mass of weed 51.53 g m-2 (0.5 ton ha-1) and the lowest was at conventional system with 32.45 g m-2 (0.3 ton ha-1). Proper weed control increased rice production by 28.9% for SRI, by 29.4% for ICM and by 14.6% for conventional cultivation systems. Keywords: dominant, weeding technique, SRI, ICM, conventional system

Perbandingan Arachis pintoi dengan Jenis Tanaman Penutup Tanah Lain sebagai Biomulsa di Pertanaman Kelapa Sawit Belum Menghasilkan ,, Yuniarti; Chozin, M. Achmad; Guntoro, Dwi; Murtilaksono, dan Kukuh
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 46 No. 2 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Cover crops have the same role as biomulches to maintain soil moisture and reduce the evaporation of soil water. The objective of research was to compare Arachis pintoi versus other cover crops as biomulch in immature oil palm plantations. The study was conducted in the Field of Education and Research Palm IPB-Cargill, Jonggol, Bogor starting in December 2014 until May 2015. The experiment was designed according to a randomized block design with four replications. The treatments were cover crop species (biomulch) i.e. no biomulch/natural vegetation, Arachis pintoi Karp. & Greg., Centrosema pubescens Benth., Calopogonium mucunoides L. and Pueraria javanica Benth. Planting materials used were cutings of A. pintoi and seed of C. pubescens, C. mucunoides and P. javanica. The planting material were planted in plots 9 m x 3 m and plot for biomass 1 m x 1 m. The results showed that the A. pintoi was not significantly different from other biomulches for ground covering and capability to hold water. Soil water content in the treatment of A. pintoi biomulch was not different from other biomulch treatments.

Perbandingan Arachis pintoi dengan Tanaman Kacang-kacangan Penutup Tanah Lain dalam Menekan Laju Erosi pada Lahan Kelapa Sawit Berbukit Sarjono, Arif; Guntoro, Dwi; Supijatno, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 1 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Land preparation of oil palm plantation in hilly areas is vulnerable to environmental degradation. Legume cover crops can be used in vegetation system for soil conservation to control erotion. Arachis pintoi is a legume potential for cover crop. The objective of the research was to study the role of A. pintoi in suppressing soil erosion rate in oil palm land with the topography of hilly land. The research was conducted on the land of Bukit Kemuning farmer group, Mersam, Batanghari, Jambi with an average slope of 22.8% from September 2017 to March 2018. The experimental design used was a single-factor randomized complete block design with five treatments and four replications. The treatment consisted of natural vegetation, Arachis pintoi, Centrosema pubescens, Pueraria javanica and Calopogonium mucunoides. The results showed that the rate of increased leaf number of A. pintoi was 13.6 pieces per week and could cover the ground surface 100% at 20 weeks after planting (WAP). The dry weight of A. pintoi biomass was 496.08 g m-2 at 20 WAP. A. pintoi suppressed soil erosion by 80.45% as compared to natural vegetation treatment. However, it was not significantly different on suppression rates to other biomulch treatments.Keywords: biomass, Calopogonium mucunoides, Centrosema pubescens, land cover crop, Pueraria javanica

Identifikasi Spesies Tanaman Penutup Tanah pada Perkebunan Kelapa Sawit Menghasilkan Suryana; Chozin, Muhamad Achmad; Guntoro, Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 3 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The study aimed to identify the types of plants suitable for cover crops on mature oil palm. The study was started by conducting microclimate measurements and vegetation analysis in a mature oil palm ecosystem with plant subjects consisting of 5 years and 10 years old plants. The measurements and analysis were carried out in August 2018 to select suitable plant samples. The research was continued by planting 6 selected plants under the shade of 0, 25, 50, and 75% using nested design to determine the responses of plant samples to various levels of shading from September 2018 to April 2019 at the Cikaawang IPB Experimental Field. The results of microclimate analysis in 5-year-old mature oil palm in Jonggol shows the light intensity of 1094.7 lux with a temperature of 28.5 oC and humidity of 68.76%, while a 10-year-old mature oil palm in Cikabayan had a light intensity of 997.8 lux with a temperature of 32.5 oC and humidity of 87.25%. The species of Asystasia gangentica, Axonopus compressus, Borreria alata, and Ottochloa nodosa were the dominant plant vegetation in two ecosystems. Asystasia gangentica was able to grow and optimally cover the area at all shading levels, while Axonopus compressus, Borreria alata, and Ottochloa nodosa can only grow and cover the area optimally at 0% and 25% and 50% shade, respectively. Keywords: micro climate, response of plant species, vegetation analysis

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 Anggraeni, Ratih Prajnaparamita Ani Kurniawati Anung Wahyudi Asrul Saputra Atang Sutandi Bachtiar Bachtiar Bambang S. Purwoko Bambang Sapta Purwoko Bilkis, Faras Gaitsa Budi Rahardjo Budi Tjahjono Bukhori, Anwar Desembardi, Faried Desyandri Desyandri Dewi, Sangrani Annisa Dhika Prita Hapsari Diaguna, Ridwan 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 Junia Anindya Purwandani, Junia Anindya 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 Mursyalatiyus, isnainy dinul Murtilaksono, dan Kukuh Mutaqin, Enjen Zaenal Neshi Claudia Ramadhanti Norul Dewi Susanti Novianti, Shilfa Oktavian, Aldi Pasaribu, Pesta Maria Hotnauli Polansky, Seken Putri, Prabawati Hyunita Rianto, Dwi Fajar Rizqullah, Ramadaniarto Roudho, Zahrotur Rusdi, Achmad Sari, Indah Fatika Sarjono, Arif Sarjono, Arif Seken Polansky Sholiha, Nabila Fairuz 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 Wahyudi Wahyudi Yaqin, Roelly Ainul Yonny Koesmaryono Yosua Pratama Simangunsong Yursida Yursida Yusak, . Zarwazi, Lalu Muhamad

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