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Evaluasi Konsumsi Air Beberapa Genotipe Padi untuk Potensi Efisiensi Penggunaan Air Supijatno, ,; Chozin, Muhammad Ahmad; Sopandie, Didy; Trikoesoemaningtyas, ,; Junaedi, Ahmad; Lubis, Iskandar
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): 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 (346.787 KB) | DOI: 10.24831/jai.v40i1.13198

Abstract

Water use efficient varieties in rice may have good opportunity in term of economic value and scarcity of water. This study was conducted to determine water consumption among rice genotypes that conventionally cultivated as low land (IR64, IPB97-F-15, Ciherang, Mentik Wangi, and Rokan hybrid), up land (Jatiluhur, Silugonggo), and amphibian type (Way Apo Buru, that could be planted both as lowland and up land). Rice seedlings at 14 days old were transplanted in a plastic container containing 83 kg of air dried soil, 1 plant per whole and 6 plants per container. The experiment was conducted in a vinyl house, using randomized complete block design with three replications. During rice growth, water table was maintained at 2 cm above soil surface, and water was added and recorded weekly. The results showed that varieties reveal production components and yield were different significantly. Water consumptions among varieties were significantly different, ranged from 15.93 L plant-1 for IR64 to 24.13 L plant-1 for Jatiluhur, or equal with 3,639 to 4,827 m3 ha-1. Jatiluhur was the most efficient variety in using water. This finding may guide us to explore benefit of water use efficient variety as sustainable option in water management of rice cultivation.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.518 KB) | DOI: 10.24831/jai.v44i2.13481

Abstract

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
The Effects of Cutting Heights and Intervals of Defoliation on Productivity and Nutrient Content of Brachiaria humidicola(Rendle) Schweick Anis, Selvie Diana; Chozin, Muhamad Ahmad; Hardjosoewignyo, Soedarmadi; Ghulamahdi, Munif; Sudradjat, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 3 (2011): 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 (151.969 KB) | DOI: 10.24831/jai.v39i3.13482

Abstract

The productivity of forage is strongly influenced by cutting height and interval of defoliation. Experiment was conducted at the Research Institute for Industrial Plants and Other Palm (BALITKA) Manado since June 2008 until April 2009. The objective of the experiment was to find out the effects of intensity and intervals of defoliation on dry weight production and the quality of nutrients. The experiment was arranged in factorial RCBD. The intensity of defoliation was based on cutting height, i.e. 5, 10, 15 cm, whereas the intervals of defoliation were 30, 45, 60 day and 456.54 Degree Days (DD). The data of dry weight production, leaf stem ratio, nutrient quality were collected. The results showed that there were significant effects of treatments on all parameters. Productivity of B. humidicolai terms of high dry weight yield, high leaf stem ratio and crude protein, low crude fiber and acid detergent fiber (ADF) content were found in the interaction of intensity 10 cm with the interval of defoliation among the vegetative development stage of 30 and 45 days, as well as the interval of defoliation based on heat unit accumulation of 456.54 DD. The research implies that a cutting height at 10 cm and interval of defoliation as mentioned above is ideal for B. humidicola. Utilization of growing degree days (GDD) to determine the appropriate time for defoliation is considerable under this experiment.Keywords: B. humidicola, defoliation, forage, nutrient, productivity
Pengaruh Konsentrasi Besi dalam Larutan Hara terhadap Gejala Keracunan Besi dan Pertumbuhan Tanaman Padi Noor, Aidi; Lubis, Iskandar; Ghulamahdi, Munif; Chozin, Muhammad Achmad; Anwar, Khairil; Wirnas, Desta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 2 (2012): 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 (346.616 KB) | DOI: 10.24831/jai.v40i2.14311

Abstract

Iron (Fe) toxicity is a major constraint in rice production that decreases yield due to high level of soluble Fe. The aims of this experiement were to study the effect of particular Fe concentrations in nutrient solution on rice growth, and to determine Fe concentration in nutrient solution that caused light, moderate, and severe Fe toxiciy symptom. The experiment was conducted in a greenhouse, Bogor Agricultural University from May to July 2010. A randomized block design with two factors and three replications were used in this study. The first factor was Fe concentration in the medium solution (2, 50, 100, 200, 400, 600 ppm Fe), and second factor was rice genotypes (IR64, Margasari). The results showed the higher Fe concentration in the solution resulted in higher scores of iron toxicity symptoms, higher Fe levels in the plant, and caused stunted growth of rice plants. Levels of Fe in a solution of ≥ 200 ppm Fe inhibited plant growth. Iron toxicity symptom in Margasari was lower than the IR64 varieties, especially at concentrations of 200 and 400 ppm. According to the regression equation Y = 0.022X+ 1849, Fe concentration in the solution which caused light Fe toxicity symptom (score ≤ 3) was ≤ 52 ppm Fe, moderate (score = 5) was 143 ppm Fe, heavy (score = 7) was 234 ppm Fe, and severe (score ≥ 9) was ≥ 325 ppm Fe. Keywords: iron toxicity symptoms, iron concentration, rice
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.86 KB) | DOI: 10.24831/jai.v46i2.16126

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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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.13 KB) | DOI: 10.24831/jai.v47i3.26980

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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
Application of phosphorous fertilizer to increase the production of several parijoto (Medinilla speciosa Blume) accessions Sari, Indah Fatika; Chozin, Muhammad Ahmad; Guntoro, Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 3 (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.v52i3.58995

Abstract

Parijoto fruit (Medinilla speciosa Blume) is a plant known as a medicinal plant in Indonesia. Parijoto fruit production is still low. Phosphorous (P) fertilization can enhance fruit production, but the optimal dosage for parijoto has yet to be determined. The research objective was to obtain the P fertilizer dosage to improve the production of several parijoto accessions. The research was conducted from January to June 2023 at Agribusiness and Technology Park IPB. The study used a split-plot randomized complete block design with four replications. The main plot's accession factor consisted of Bogor, Kudus, and Nganjuk. The fertilizer dosage per polybag, as the subplot, consisted of without P2O5 (P0), 1.8 g P2O5 (P1), 3.6 g P2O5 (P2), 5.4 g P2O5 (P3), 7.2 g P2O5 (P4), 9.0 g P2O5 (P5). The results showed that applying P fertilizer at 7.2 g P2O5 produced the highest fruit weight per plant for the Bogor and Nganjuk accessions. For the Kudus accession, it was at a fertilization dosage of 5.4 grams of P2O5. There was an interaction between accession and P dosage on fruit weight per plant. Keywords: dosage; fruit production; medical plant
Determining granule size of Cyperus rotundus tuber-based bioherbicide for weed control in upland rice Rohman, Rizki Fadilah; Chozin, Muhamad Achmad
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.v53i1.62144

Abstract

The application of granular bioherbicides derived from purple nutsedge (Cyperus rotundus L.) tubers offers an environmentally friendly alternative for managing weed competition in upland rice cultivation. This study evaluated the efficacy of various granular bioherbicide forms and sizes (67.5 kg ha-1) in suppressing weed growth and their impact on upland rice. A completely randomized design with twelve treatments was employed. Results showed that granular bioherbicides effectively controlled broadleaf weeds for up to four weeks without causing phytotoxicity to upland rice. Very small granular bioherbicides (spherical and cylindrical) were the most effective form to suppress weed growth of Alternanthera sessilis (L.) R.Br. ex DC., and Mimosa pudica L., and enhance upland rice growth and yield. Keywords: allelopathy; biological control; efficacy; pre-emergence; sustainable agriculture
Pengaruh Naungan terhadap Pertumbuhan dan Produksi Beberapa Genotipe Cabai Rawit (Capsicum annuum L.) Alhidayah, Destya; Chozin, Muhamad Achmad; Ritonga, Arya Widura
Buletin Agrohorti Vol. 12 No. 1 (2024): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v12i1.53527

Abstract

Percobaan ini dilakukan untuk melihat pengaruh naungan, genotipe dan interaksi antara genotipe dengan naungan terhadap pertumbuhan dan produksi beberapa genotipe cabai rawit, selain itu untuk mengkonfirmasi kembali tingkat toleransi naungan dari beberapa genotipe cabai rawit. Percobaan ini dilaksanakan di Kebun Percobaan Leuwikopo, Dramaga, Bogor, Jawa Barat pada bulan November 2021 sampai bulan Maret 2022. Percobaan menggunakan rancangan kelompok lengkap teracak (RKLT) pola tersarang, dengan petak utama naungan dan anak petak berupa 3 genotipe cabai rawit. Hasil penelitian menunjukkan bahwa naungan paranet 55% menyebabkan peningkatan tinggi tanaman, tinggi dikotomus, lebar tajuk, lebar daun dan panjang daun. Naungan paranet 55% juga menyebabkan penurunan bobot buah per tanaman, produktivitas, fruitset, jumlah bunga dan jumlah buah pada tanaman cabai rawit yang diamati. Genotipe G4 (F8.145291-14-9-3-12-1) dan G7 (Genie) memiliki bobot buah per tanaman, produktivitas, umur berbunga, fruitset, tinggi tanaman, tinggi dikotomus dan ukuran daun yang lebih tinggi dibandingkan dengan genotipe G3 (F10.160291-3-12-5-51-1-1- 2-2-1). Interaksi antara genotipe dan tingkat naungan terdapat pada karakter panjang buah, diameter buah dan panjang daun. Genotipe cabai rawit G4 dan G7 termasuk genotipe cabai rawit yang moderat toleran naungan, sedangkan genotipe cabai rawit G3 termasuk genotipe cabai yang peka naungan berdasarkan produksi relatifnya. Genotipe G4 dan G7 memiliki konsistensi yang sama dengan penelitian sebelumnya, dimana genotipe G4 memiliki tingkat toleransi yang lebih tinggi terhadap naungan dibandingkan dengan genotipe G3 dan G7 tetap menjadi genotipe yang moderat toleran naungan. Kata kunci: Intensitas cahaya rendah, fruitset, produktivitas
Aksi Gen Epistasis Duplikat pada Karakter Terkait Toleransi Naungan di Tanaman Tomat Ritonga, Arya W; Syukur, Muhamad; Chozin, Muhammad Achmad; Maharijaya, Awang; Sobir, Sobir
Buletin Agrohorti Vol. 12 No. 2 (2024): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v12i2.56491

Abstract

Informasi tentang karakter seleksi dan pewarisan sifatnya sangat penting bagi program pemuliaan tanaman. Penelitian ini bertujuan untuk memperoleh karakter seleksi dan informasi pewarisan sifatnya terhadap cekaman naungan pada tanaman tomat. Populasi persilangan Biparental SSH3 x 4979 (tetua, F1, backcross dan F2) ditanam pada kondisi tanpa naungan (N0) dan kondisi cekaman naungan paranet 50% (N50) di Kebun Percobaan Pusat Kajian Hortikultura Tropika – Institut Pertanian Bogor, Pasir Kuda, Bogor, Jawa Barat, Indonesia. Hasil penelitian memperlihatkan bahwa karakter kehijauan daun, fruit set, jumlah buah dan bobot buah per tanaman merupakan karakter seleksi toleran naungan pada tanaman tomat. Terdapat aksi gen dominan dan epistasis duplikat pada karakter-karakter tersebut baik pada kondisi normal maupun kondisi cekaman naungan kecuali karakter fruit set pada kondisi tanpa naungan. Dominansi pada karakter-karakter tersebut bersifat over dominan pada kondisi tanpa naungan, namun dominan parsial pada kondisi cekaman naungan. Ragam aditif lebih berperan dibandingkan ragam non aditif pada karakter kehijauan daun, fruit set, jumlah dan bobot buah per tanaman pada kondisi normal namun sebaliknya dimana ragam non aditif lebih berperan dibandingkan ragam aditif pada karakter-karakter tersebut saat kondisi cekaman naungan. Seleksi pada generasi awal seperti generasi F2 dapat efektif dilakukan pada karakter-karakter tersebut pada kondisi tanpa naungan, namun seleksi pada kondisi cekaman naungan terhadap karakter-karakter tersebut lebih baik dilakukan pada generasi lanjut. Kata kunci: agroforestri, berkelanjutan, tumpang sari, varietas unggul
Co-Authors , Handoko ,, Yuniarti . Sugiyanta, . A Ali A. S. Suharyono Abdul Harris Burhan Abdullah Abdullah Ade Sumiahadi, Ade AHMAD JUNAEDI Ahmad Junaidi Aidi Noor Aji Hermawan Aldi M Alfima Rahasti Alhidayah, Destya Anas Miftah Fauzi Andhini, Martika Ani Kurniawati Anita Ristianingrum Ansyarif Khalid Artha Regina Tambunan Asdi Asdi Asep Nursangaji Asih Sukowati Astuti DA Astuti DA Awang Maharijaya Axel Anderson Bambang Pramudya Bambang S. Purwoko Bambang S. Purwoko Budi Tjahjono Bustami Syam Chairannisa, Dyana D.A. Astuti Darmawansyah Darmawansyah DARUSMAN, L.K. Darwis AN Darwis AN Desta Wirnas dewi novita Dewi, Sangrani Annisa Diah karyawati Didy Sopandie Dina Harsono Dini Dwirestina Dwi Guntoro Dwiwanti Sulistyowati E. Namaken Sembiring Edi Santosa Edy Yusmin Eka Intan Kumala Putri Eka Wardiana Eko Sulistyono EVA OKTAVIDIATI, EVA Evar, Fitrawaty Orista Faradesi Ardialisa Femila Rezkiyanti Fibra Nurainy Fred Rumawas Gerson Hans Maure GHULAMAHDI, M. h sanusi H. Soedarmadi HAJRIAL ASWIDINNOOR Hardjosoewignyo, Soedarmadi Hartami Dewi Hemawati Hemawati Hendrik Hendrik Herman Wafom Tubur Hesty Juniar Rukmin Hiroshi Ehara Hongarta, Reynaldo I. Hanarida I. S. Dewi Ida H. Somantri Indriani Santoso Iqbal . Irdika Mansur Irianto, M. Yuli Irwan Abdullah Iskandar Lubis ISMAIL SALEH Iswari S. Dewi Jalali Iqram Kanny, Putri Irene Karti PDMH Karti PDMH Khairil Anwar Krishna Surya Buana Kusuma, Ayu Vandira Candra KWANG HO KIM Laila Nur Atika Luki Abdullah M Zardan Araby M. Ghulamahdi Machfud Machfud Maisura Maisura Maria Erna Marmawi R . Maya Melati Mochammad Afifuddin Moeljarno Djojomartono Moh. Amri Arsyid Muftil Badri Muhamad Kurniadi Muhamad Syukur Muhammad Syaifuk Ar Rosyid Munawir, Fathurrahman Aziz Munif Ghulamahdi Murtilaksono, dan Kukuh P.M.D.H Karti, P.M.D.H Pangerang, Utama K. Patandean, Brayen Perwita, Atikah Dyah Priatna Sasmita Purwono Purwono Putri Sakura Raisa Baharuddin RANI FARIDA Ratih Marina Kurniaty Rinaldo, Ruswandi Ritonga, Arya W Ritonga, Arya Widura Rohman, Rizki Fadilah Rosyid, Muhammad Syaiful Ar S. Sujiprihati Sahrullah Sahrullah Sari, Indah Fatika Selvie D. Anis Selvie Diana Anis Sigit Prabawa Sobir Sobir SOEKISMAN TJITROSEMITO Sofiyah, Maratus Sofyan Zaman Sri Mulatsih Sudirman Yahya Sudradjat , Sudradjat Sudradjat Sugiyanta Supijatno Suryana Sutikno Sutikno Suwarto Suwarto Suwitono, Bayu Syamsiar, Syamsiar Tanto Pratondo Utomo Tineke Mandang Trikoesoemaningtyas Ulinnuha, Zulfa urai salam Vivid Violin Wahju Qamara Mugnisyah Wenny Rahmawati WIJAYANTO, N. Yasidi, Farid Yudi Febrianto Yudi Febrianto Yuline . Yundari, Yundari Zarwazi, Lalu Muhamad