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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia SOCA: Jurnal Sosial Ekonomi Pertanian JOURNAL ON SOCIAL ECONOMIC OF AGRICULTURE AND AGRIBUSINESS Agrovigor: Jurnal Agroekoteknologi Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) agriTECH Jurnal Agro Jurnal Penelitian Pertanian Terapan Journal of Applied Geospatial Information Journal of Regional and Rural Development Planning Journal of Tropical Crop Science AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian HUKUMAH: Jurnal Hukum Islam Jurnal Agrium Jurnal Pusat Inovasi Masyarakat Journal of Agrosociology and Sustainability

Iskandar Lubis

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 309076

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Medicine & Pharmacology Physics Social Sciences Other

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Peanut Cultivar Differences in Yield Based on Source and Sink Characteristics Iskandar Lubis; Heni Purnamawati; Roedhy Poerwanto; , Yudiwanti; Ahmad Ghozi Mansyuri; Sri Astuti Rais
Indonesian Journal of Agronomy Vol. 40 No. 3 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was conducted to determine peanut cultivar differences in sink and source sizes as represented by vegetative growth and yields. Two sets of experiments were conducted at Bogor Agricultural University farms, Sawah Baru and Cikarawang (06o33’, S, 106o45’E, 250 m altitude). Planting was conducted on June 12 and June 20, 2007 using 20 local and national cultivars in each location. Both experiments used randomized complete block design with three replications. Data were analyzed using correlation and regression analysis. Size of experimental unit was 1.6 m x 4.0 m, with planting density 125,000 plants ha-1. Urea, SP36 and KCl were applied at planting date in the rate of (kg ha-1) 45 N, 100 P2O5 and 50 K2O. Four stages of plant growth were studied: 25 days after planting (DAP); 6 weeks after planting (WAP); 10 WAP (pod filling) and 14 WAP (harvest). Five plants were sampled at 25 DAP, two plants at 6 WAP, 10 WAP and 14 WAP, and separated into leaves, stems, roots and pods. The average yield of two experimental stations showed that Biawak cultivar had the highest yield due to relatively higher aboveground dry weight (source), pod filling percentage and maximum number of gynophor+pods (potential sink). Jepara cultivar had the lowest yield due to low pod filling percentage and potential sink, although its source was considered to be in the medium category. Above ground dry weight at 6 and 10 WAP had close relation with Crop Growth Rate (CGR) during 25 DAP-6 WAP and 6-10 WAP, and the higher CGR during those periods were more related to leaf area index than to single leaf photosynthetic capacity. Keywords: crop growth rate, pod filling percentage, leaf area index, single leaf photosynthetic capacity

Karakter Morfologi dan Fisiologi yang Berkaitan dengan Efisiensi Pemakaian Air pada Beberapa Varietas Padi Gogo Laili Munawaroh; Eko Sulistyono; Iskandar Lubis
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

ABSTRACTUpland rice cultivation required specific cultivation, particularly the use of crop varieties that have good water-use efficiency or varieties that are able to adapt to the conditions of limited water availability. The aim of this study was to describe characters of morphology and physiology related to water use efficiency of upland rice varieties. The research was conducted from October 2013 to April 2014 in the greenhouse IPB Experimental Station Cikabayan, Bogor. The research was arranged in randomized block design with two factors. The first factor was 5 upland rice varieties (Inpago 5, Batutegi, Jatiluhur, Inpago 8 and Sarinah). The second factor was 4 irrigation intervals which were 3, 6, 9, and 12 days. Characteristics assosiated with water saving of upland rices were higher plant height, longer panicle, larger roots volume, narrower leaves, higher evapotranspiration, faster flowering phase, greener leaves, higher number of leaves and tillers, heavier dry matter, higher number of grains, heavier 100 grain weight and dry weight of grains. The fraction of available absorbed water at panicle initiation, flowering and harvesting were 83.36%, 137.14% and 116.65%, respectively, to obtain dry grains of 3.39 ton ha-1.Keywords: evapotranspiration, water fraction, WUE

Evaluasi Konsumsi Air Beberapa Genotipe Padi untuk Potensi Efisiensi Penggunaan Air , Supijatno; Muhammad Ahmad Chozin; Didy Sopandie; , Trikoesoemaningtyas; Ahmad Junaedi; Iskandar Lubis
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

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.

Pengaruh Konsentrasi Besi dalam Larutan Hara terhadap Gejala Keracunan Besi dan Pertumbuhan Tanaman Padi Aidi Noor; Iskandar Lubis; Munif Ghulamahdi; Muhammad Achmad Chozin; Khairil Anwar; Desta Wirnas
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

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

Growth and Yield of Six Soybean Genotypes on Short-term Flooding Condition in the Type-B Overflow Tidal Swamps Danner Sagala; Munif Ghulamahdi; Trikoesoemaningtyas Trikoesoemaningtyas; Iskandar Lubis; Tatsuhiko Shiraiwa; and Koki Homma
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

A study to explore the agronomic response of some soybean genotypes to temporary flooding in the type-B overflow tidal swamp and to obtain the adaptive genotype to the environment was arranged in a split-plot design at coordinates 2°64’46.77” S and 104°75’27.75” E with an altitude of 3.5 m above sea level. The main plot was subject to short-term flooding with a variety of cultivation technologies consisting of saturated soil culture (SSC) for one month without flooding, SSC for one month with flooding, SSC during plant growth without flooding, SSC during plant growth with flooding and non-SSC/dry cultivation. The subplot was soybean genotype consisting of 6 genotypes: Tanggamus, Karasumame (Naihou), M652, Anjasmoro, M100-47-52-13, and Tachinagaha. The result showed that impaired soybean growth at the beginning of the growth stage caused pressure on the later growth stage and decreased soybean yield. Short-term flooding reduced the soybean yield. The non-tropical genotypes of Karasumamae (Naihou), M652 and Tachinagaha produced the lowest yield of seeds; 20% lower than the tropical genotypes of Anjasmoro, M100-47-52-13 and Tanggamus with SSC during plant growth without flooding treatment. The Karasumame (Naihou) genotype produced the highest seed yield of the three non-tropical genotypes. Anjasmoro and M100-47-52-13 produced the highest seed yield at temporary flooding.

Respon Pertumbuhan dan Hasil Padi (Oryza sativa L.) terhadap Cekaman Suhu Tinggi Miftakhul Bakhrir Rozaq Khamid; Ahmad Junaedi; Iskandar Lubis; dan Yoshinori Yamamoto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 2 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Global climate change will imply to increase in atmospheric temperature, which can affect the sensitive stadia and decrease rice yield. The objective of this research was to study the growth and production of rice varieties under hightemperature stress. This research was conducted using a split-plot design under partitioned polyethylene house in order to create temperature differences among main-plots. The partitioned treatment successfully increased by 1.7 °C of average temperature with a maximum temperature of 35.0 °C (T1) and 37.6 °C (T2). Rice varieties, namely IR64, Ciherang, IPB-3S, Way Apo Buru, Jatiluhur, Menthik Wangi and Silugonggo were randomized as sub-plot. The results showed that increasing temperature had no significant effect on plant height, tiller number, SPAD-value, leaf area index, and crop growth rate, but significantly decreased 1,000 grains weight by 4.57% and harvest index by 20%. The interaction between temperature and varieties significantly affected a percentage of a productive tiller and partially filled spikelets. Ciherang variety produced the lowest percentage of productive tillers on T2 by 57.6%. Way Apo Buru variety produced the lowest percentage of partially filled spikelets on T2 by 3.01%.

Laju Pengisian Biji pada Beberapa Varietas Kedelai dengan Berbagai Ukuran Biji ian Surya Fitra Atmaja; Iskandar Lubis; Heni Purnamawati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 2 (2020): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Nitrogen is an element affecting the growth and production of soybean plants. N available for plants affects leaf area, dry weight, and crop production. Soybean plant production is related to the accumulation rate of seed filling during the seed filling phase (R5-R7). The research aimed to evaluate the effect of N and seed size on the rate of seed filling. The experiment was conducted from July to November 2019 at the Cikabayan Experimental Station, Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor. The study used a randomized complete block design with two factors and three replications. The first factor was the urea doses of 0 and 50 kg urea ha-1. The second factor was soybean varieties with different seed sizes, namely Tanggamus, Anjasmoro, Grobogan, and Biosoy 1. The results showed that the application of N fertilizer to the plants did not significantly influence the rate of seed filling, but tended to increase the rate of seed filling at the end of the seed filling period. N fertilizer affected the amount of N remobilized and tended to increase the remobilized dry weight, even though not significant. Keywords: dry weight, net assimilation rate, plant growth rate, seed filling rate, seed size

The Efisiensi Penggunaan Nitrogen pada Padi Gogo Varietas IPB 9G Suwarto; Defiyanto Djami Adi; Iskandar Lubis; Sugiyanta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 1 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Beras merupakan makanan pokok di Indonesia. Beberapa varietas padi gogo unggul baru telah dilepas dan perlu dilengkapi pemupukan yang akurat di lokasi tertentu. Salah satu jenis pupuk tersebut adalah nitrogen (N). Penelitian ini bertujuan untuk mengetahui efisiensi penggunaan N pada padi gogo IPB 9G sebagai respon terhadap dosis pupuk N. Dosis pupuk yang diaplikasikan adalah 0, 46, 92, 138, dan 184 kg N ha-1 dalam bentuk urea (46% N). Percobaan dilakukan menggunakan rancangan acak kelompok dengan 3 ulangan di Darmaga, Bogor pada Maret-Juli 2018. Petak percobaan berukuran 3.5 m x 3.0 m. Padi gogo ditanam dengan jarak 50 cm x 10 cm. Efisiensi penggunaan N dinilai dari pertumbuhan padi, serapan N, efisiensi agronomi dan fisiologis. Peningkatan tinggi tanaman dan jumlah anakan mengikuti peningkatan dosis N. Serapan N dan hasil gabah memiliki respon kuadratik terhadap dosis N dan dapat menjadi indikator efisiensi pemupukan N. Serapan N dan hasil gabah yang maksimum diperoleh dari dosis pupuk N yang hampir sama, rata-rata 143.8 kg N ha-1 (312.5 kg urea ha-1). Untuk efisiensi pemupukan N padi gogo IPB 9G pada tanah dengan N total sedang (0.27%) di musim kering dapat diaplikasikan 143.8 kg N ha-1 (urea 312.5 kg N ha-1). Kata kunci: efisiensi agronomis, efisiensi fisiologis, hasil biji, serapan N

Ameliorasi Rizosfer Kedelai Menggunakan Jerami, Abu Sekam, dan Dolomit Siti Ria Chaerunisa; Munif Ghulamahdi; Iskandar Lubis
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 2 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Keberhasilan praktik budidaya jenuh air di lahan pasang surut untuk meningkatkan produksi kedelai perlu didukung dengan ameliorasi. Rizosfer merupakan area terjadinya hubungan timbal balik yang intensif antara tanaman, tanah, dan mikroorganisme tanah, namun pengaruh dari ameliorasi melalui rizosfer belum jelas. Penelitian ini bertujuan untuk mempelajari pengaruh ameliorasi menggunakan jerami, abu sekam, dan dolomit pada rizosfer terhadap pertumbuhan dan produksi kedelai. Penelitian dilakukan di lahan rawa pasang surut tipe luapan B dari bulan Mei sampai dengan Agustus 2019. Rancangan percobaan yang digunakan adalah split-split plot dengan jerami, abu sekam, dan dolomit masing-masing sebagai petak utama, anak petak, dan anak-anak petak. Jerami diaplikasikan dengan cara pembenaman, sedangkan abu sekam dan dolomit diaplikasikan pada rizosfer saat penanaman. Pengamatan yang dilakukan meliputi bobot biomassa kering, kadar hara daun P, Fe, dan Al, jumlah polong isi, dan produktivitas tanaman kedelai. Aplikasi abu sekam dengan jerami atau dengan dolomit dapat meningkatkan pertumbuhan dan produksi kedelai. Kombinasi antara abu sekam dosis 400 kg ha-1 dengan jerami 4 ton ha-1 menghasilkan produktivitas tertinggi dengan nilai 2.94 ton ha-1. Kata kunci: budidaya jenuh air, cekaman abiotik, lahan pasang surut, rizosfer

Respon Karakter Pengisian Biji dan Hasil terhadap Pemberian Pupuk Urea pada Empat Varietas Padi Renica Nurhermawati; Iskandar Lubis; Ahmad Junaedi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 3 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Unsur nitrogen (N) memainkan peran penting pada tanaman padi termasuk dalam meningkatkan hasil tanaman. Terdapatnya perbedaan hasil gabah pada masing-masing varietas padi sangat erat kaitannya dengan karakter pengisian biji. Dengan demikian, respon karakter pengisian biji dan hasil dari varietas padi yang berbeda terhadap kondisi N di dalam tanah sangat relevan untuk dikaji. Tujuan penelitian ini adalah untuk mengkaji respon karakter pengisian biji dan hasil empat varietas padi terhadap pemberian pupuk urea. Penelitian ini dilaksanakan di lahan persawahan Desa Petapahan, Kampar, Riau pada bulan September sampai Desember 2020. Rancangan percobaan yang digunakan adalah rancangan petak terbagi dalam rancangan acak kelompok. Dosis pupuk urea (0 kg ha-1 dan 250 kg ha-1) merupakan faktor pertama sebagai petak utama, sedangkan varietas (Hipa 18, IPB 3S, Ciherang dan Way Apo Buru) merupakan faktor kedua sebagai anak petak. Berdasarkan hasil penelitian diketahui bahwa Hipa 18 merupakan varietas padi yang melakukan remobilisasi asimilat dalam jumlah yang paling banyak selama fase pengisian biji. Selain itu, Hipa 18 juga menggunakan N dalam persentase yang paling tinggi untuk pembentukan dan perkembangan malai dibandingkan varietas lainnya. Respon tertinggi untuk semua komponen hasil juga diperoleh dari Hipa 18 kecuali bobot 100 biji. Hasil penelitian ini dapat digunakan sebagai dasar dalam merakit varietas padi yang memiliki karakterisik hasil tinggi. Disamping itu, pemupukan yang presisi untuk masing-masing varietas padi dapat direkomendasikan. Kata kunci: bobot kering, fotosintesis, indeks luas daun, kandungan N daun, remobilisasi asimilat

Co-Authors , Yudiwanti , Yudiwanti - Suwarno - Suwarno - Triwidiyati . Suwarno Achmad Gunawan Achmad Gunawan Adi, Defiyanto Djami Adinda Soraya Nasution Afifah, Septi Nur Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri AHMAD JUNAEDI Ahmad Junaidi Ahmad Junaidi Ahmad Rifqi Fauzi Ahmad Zamzami Aidi Noor Ananda Diah Oktaviani and Koki Homma Andrea Emma Pravitasari, Andrea Emma Arinta, Kistia Asep Hambali Bagus Arrasyid Bambang Sapta Purwoko Boedi Tjahjono Butar Butar, Dewi Valentina Chiharu Hongo, Chiharu dan Yoshinori Yamamoto Danner Sagala Dede Kismantoro Deni Suhendar Desta Wirnas Dewi Valentina Butar Butar Didi Darmadi, Didi Didy Sopandie Dini Gustiningsih Eko Sulistyono Endah Retno Palupi Erika Santi Faadhilah, Fajar Fahmi, Muhammad Rasyid Noor Faisal Faisal Faqih Udin Fathnoer, Veronica Faza Yasmin Saidah Firdaus Puja Santana Fitratunnisah Fitriyah Nurul Ghulamhdi, Munif Gunawan, Achmad HAJRIAL ASWIDINNOOR Hambali, Asep Harahap, Ade Tika Sari Hirokazu Higuchi Hiroshi Ehara Hiroshi Ehara Hiroshi Ehara Homma, Koki I Nyoman Widiarta I Nyoman Widiarta I Nyoman Widiarta ian Surya Fitra Atmaja Ian Surya Fitra Atmaja Ilham iwan Tona Iswari Saraswati Dewi Jayawarsa, A.A. Ketut Khairil Anwar Khursatul Munibah Kistia Arinta Koki Homma Kurniawan, Dede Yudo Laili Munawaroh Luh Made Indah Sri Handari Adiputra Luh Putu Ratna Sundari M A Chozin M A Chozin Maisura Maisura Manullang, Frisca Anggriani Marlinda, Barirah Maudy Susanti Maulana, Arlingga Ichwan Megayani Sri Rahayu Miftakhul Bakhrir Rozaq Khamid Muhamad Ahmad Chozin Muhamad Syukur Muhammad Ahmad Chozin Muhammad Firdaus Lubis Muhammad Firdaus Lubis Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Mujio Munandar, Arief Munif Ghulamahdi Novita Niken Putri Ulayyah Nur Fa'izah Zainal Ospa Pea Yuanita Meishanti Purwono Purwono Purwono Purwono Rakhman Adhiatma Renica Nurhermawati Riska Firotul Hidayah Roedhy Poerwanto SANTUN R.P SITORUS Septi Nur Afifah Siti Nurhidayah Siti Ria Chaerunisa Sitta Mujahid Sopandie, Didie Sri Astuti Rais Sri Astuti Rais Sri Purwanti Sugiyanta Supijatno Suwarno - Suwarto Suwitono, Bayu Tatsuhiko Shiraiwa Tatsuhiko Shiraiwa Tatsuhiko Shiraiwa Titi Candra Sunarti Titiek S. Yuliani Tomohiro Kondo Tri Koesoemaningtyas Trikoesoemaningtyas Widiatmaka Willy Bayuardi Suwarno Willy Monika Yohansyah Willy Monika Yohansyah Wira Hadianto, Wira Yartiwi, Yartiwi Yati Astuti Yudi Sastro Yuti Giamerti, Yuti

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