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Hubungan antara Pengelolaan Tajuk dan Produksi Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Tandun Kabupaten Kampar, Riau Sandi, Yusri Iryas; Sopandie, Didy; Suwarto
Buletin Agrohorti Vol. 11 No. 3 (2023): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v11i3.48825

Abstract

Penelitian dilaksanakan di Kebun Tandun, Kabupaten Kampar, Riau pada bulan Januari hingga Mei 2022. Penelitian bertujuan untuk menganalisis hubungan antara pengelolaan tajuk dan produksi kelapa sawit. Pengamatan yang dilakukan meliputi sistem penunasan, kriteria dan prosedur penunasan, teknik penunasan, jumlah pelepah, pengukuran tajuk, dan ILD. Sistem penunasan yang digunakan adalah sistem korektif untuk tanaman remaja sampai tua dan sistem periodik untuk tanaman muda. Penerapan teknik songgo sesuai SOP memiliki persentase diatas 65%. Jumlah pelepah dipertahankan berdasarkan SOP berada diatas 50%. Jumlah pelepah yang baik dipertahankan pada tanaman umur 4-7,8-13 dan diatas 13 tahun adalah 56-64, 48-56, dan 40-48 untuk seluruh varietas tetapi varietas Sriwijaya umur diatas 13 tahun dapat menggunakan jumlah pelepah dipertahankan 32-40. Data hasil pengamatan dianalisis menggunakan analisis Uji t-student. Blok J20A tanpa kondisi under pruning memiliki produksi yang lebih baik dibanding blok J24A yang mengalami kondisi under pruning mencapai 7.5%. Blok K18 dengan kondisi over pruning 25% memiliki produksi lebih baik dibanding Blok K24 dan K26 yang memiliki kondisi over pruning 37.51% dan 30.91%. Pemangkasan pada TM umur diatas 13 tahun tidak terlalu berpengaruh terhadap produktivitas. Varietas yang berbeda memiliki nilai ILD yang berbeda. Produksi tertinggi didapat pada nilai ILD 6.45 dengan umur tanaman 8-13 tahun. Kata kunci: ILD, jumlah pelepah, penunasan, songgo
Pengelolaan Gulma Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Negeri Lama Selatan, Sumatera Utara Nasution, Annisa Andrini; Sopandie, Didy; Lontoh, Adolf Pieter
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.v12i1.51386

Abstract

Pengelolaan gulma pada kelapa sawit dibutuhkan untuk meningkatkan keefektifan pengendalian gulma dan memperbaiki produktivitas kelapa sawit. Penelitian ini dilaksanakan pada Januari hingga Mei 2022 yang berlokasi di Kebun Negeri Lama Selatan. Penelitian ini bertujuan untuk mempelajari jenis gulma dominan dan teknik pengendaliannya. Hasil pengamatan menunjukkan bahwa perhitungan NJD, gulma yang dominan adalah Cynodon dactylon (L.) (36.43%), Asystasia gangetica (L.) T. Anderson (25.24%), Echinochloa colona (L.) (17.29%), dan Cleome rutidosperma (17.15%). Hasil pengamatan lain mengindikasikan bahwa kegiatan kalibrasi belum diterapkan sesuai dengan standar kebun berdasarkan hasil uji t- student pada taraf 5%. Metode penerapan herbisida untuk dosis (rata-rata 0.27 L per tanaman), lebar semprot (rata-rata 116 cm), cara semprot, dan bahan aktif yang dipakai sudah memenuhi standar ketepatan kebun berdasarkan hasil uji t-student pada taraf 5%. Waktu aplikasi belum terlaksana dengan tepat. Pengelolaan gulma yang dilaksanakan telah mempertimbangkan aspek keberlanjutan ekologis melalui pemilihan bahan aktif, pemanfaatan gulma penting (Nephrolepis biserrata), dan implementasi aturan dalam penggunaan bahan kimia. Dosis 0.5 kg ha-1 metil metsulfuron sangat efektif untuk mengendalikan gulma Asystasia gangetica secara total pada hari ke-20 HSA. Keterampilan aplikasi waktu semprot dipengaruhi oleh usia pekerja berdasarkan analisis F-tukey pada taraf 5%. Pengawasan terhadap kondisi alat penting dilakukan untuk mengoptimalkan keefektifan pengendalian gulma. Kata kunci: kalibrasi, NJD, keterampilan kerja
Pendugaan Parameter Genetik dan Seleksi Galur Mutan Sorgum (Sorghum bicolor (L.) Moench) di Tanah Masam (Estimation of Genetic Parameters and Selection of Sorghum Mutant Lines under Acid Soil Stress Conditions) Sungkono Sungkono; Trikoesoemaningtyas Trikoesoemaningtyas; Desta Wirnas; Didy Sopandie; Soeranto Human; Muhammad Arif Yudiarto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 3 (2009): 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 (317.958 KB) | DOI: 10.24831/jai.v37i3.1238

Abstract

  Sorghum is one of high value commodities for food and energy security due to its wide adaptation. The objectives of this research were to study some genetic parameters of sorghum agronomic traits grown under acid soil conditions and to select aluminum-tolerant sorghum mutant lines.  The selection was conducted in an augmented design with 61 lines at the field research station of B2TP-BPPT Lampung. Genetic materials used were mutant lines developed throught gamma irradiation.  The results showed that there was significant differences among the mutant lines for  some agronomic characters observed.  The heritability estimates for agronomic characters were classified as intermediate to high.  Selection based on seed weight and biomass production resulted three best sorghum mutan lines i.e ZH30-29-07, ZH30-30-07, and ZH30-35-07.  These lines showed the best yield and biomass production under acid soil condition.   Key words:  sorghum, acid soil, heritability, selection
Ketenggangan Genotipe Jagung (Zea mays L.) Terhadap Cekaman Aluminium , Syafruddin; Didy Sopandie; , Trikoesoemaningtyas
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 1 (2006): 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 (69.185 KB) | DOI: 10.24831/jai.v34i1.1268

Abstract

Aluminum (Al) toxicity is the main yield-limiting factor for maize growing on acid soils of tropical regions. This experiment was conducted to screen maize (Zea mays L) genotypes under Al stress in culture solution. The experiment was arranged in a split plot design with three replications. The main plots were Al concentrations (0, 2.5, 5 10, 20, and 40 ppm Al), and the sub plots were 22 maize genotypes. The results indicated that the genotype AMATL-(HS).C2, SATP-(S2)-C6-S0, MRSS-1(S1).C1-29-1, and MRSS-1(S1).C1-57-1  were more tolerant to Al-toxicity than the other genotypes including Antasena. The growth of Al-tolerant genotypes under low concentration of Al (2.5 ppm Al) was stimulated. The Concentration of 5 - 10 ppm Al in nutrient solution was adequate to separate genotypes between tolerant and sensitive genotypes in screening maize genotypes under Al stress. Relative net root length and relative root length were the best variable to be used as Al-tolerance indicators.   Key words: Maize, Al-tolerance,   Al-toxicity  
Pemilihan Karakter Agronomi untuk Menyusun Indeks Seleksi pada 11 Populasi Kedelai Generasi F6 Desta Wirnas; Imam Widodo; Sobir Sobir; Trikoesoemaningtyas Trikoesoemaningtyas; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 1 (2006): 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 (129.405 KB) | DOI: 10.24831/jai.v34i1.1270

Abstract

High-yielding variety is one of the targets in soybean breeding program. High-yielding variety could be developed through simultaneous selection. Simultaneous selection  using selection index was more efficient  than selection based on an individual trait only.  Objective of  the research was to select agronomic characters for construction selection index  on 11 soybean populations F6 generation based on correlation analysis, path analysis, and heritability.  The correlation analysis  showed that  number of branch,  number of total nod, number of filled pod, number of unfilled pod, number of total pod, and percentage of filled pod have positively and significantly correlated with  yield per plant.  Based on  path analysis, characters number of branch, number of unfilled pod, and number of filled pod have positive direct on yield per plant.   The result also showed that  number  of filled pod has maximum positive direct effect on yield per plant.  Generally, number of total nod, number of filled pod, number of total pod, and percentage of filled pod have higher heritability  than other characters.   Key words: Soybean, correlation, path analysis, heritability, selection index
Adaptasi Tanaman Kedelai Terhadap Intensitas Cahaya Rendah : Karakter Daun untuk Efisiensi Penangkapan Cahaya La Muhuria; Kartika Ning Tyas; Nurul Khumaida; , Trikoesoemaningtyas; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 3 (2006): 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 (316.866 KB) | DOI: 10.24831/jai.v34i3.1292

Abstract

This research was conducted to identify some leaf characters related to light capture efficiency. It used split plot design with sub plot nested at the main plot. The main plot was light intensity consisted of two levels: I100 = light intensity 100% and I50 = light intensity 50%, while the sub plot was soybean genotype consisted of G1 = Pangrango, G2 = Ceneng, G3 = Godek, and G4 = Slamet.  Leaf characters measured were : leaf total area, specific leaf area, trifoliate leaf area, leaf hairs (trichome) density, leaf thickness, length of  palisade, chlorophylls content (chlorophyll a, b, and ratio a/b), and the greenness intensity.  The result of research indicated that Ceneng has lower total leaf area, higher specific and trifoliate leaf area, less leaf hair density, thinner leaf, shorter palisade, higher greenness intensity, higher chlorophyll content (a and b), and also lower ratio chlorophyll a/b.   Key words:  Light capture efficiency, light intensity, tolerant genotype, sensitive genotype, soybean
Karakter Morfo-Fisiologi Daun, Penciri Adaptasi Kedelai terhadap Intensitas Cahaya Rendah , Kisman; Nurul Khumaida; , Trikoesoemaningtyas; , Sobir; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 2 (2007): 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 (56.917 KB) | DOI: 10.24831/jai.v35i2.1317

Abstract

The main objective of this study was to identify the leaf morpho-physiological characters as markers for adaptation of soybean to low light intensity. The field experiment was conducted using split plot design with 3 replications. First factor was soybean genotype consisted of shade tolerant genotypes (Ceneng, Pangrango) and sensitive genotypes (Godek, Slamet). Second factor was low light intensity consisted of: L0 = control (under full sun light), L1 = 5 days under 50% shading (exposed after 21 days after planting/DAP), L2 = 5 days under dark condition (exposed after 21 DAP), L3 = 3 days 50% shading + 5 days sun light (exposed after 18 DAP), dan L4 = 3 days 50% shading + 3 days sun light + 5 day dark conditions (exposed after 15 DAP). The 50% shading was made artificially using black plastic paranet with 50% light transmitted. Results of this study showed that under the conditions of low light intensity, leaf morpho-physiological characters of soybean that could be used as markers for adaptation were leaf area, specific leaf weight, and chlorophyll content. Leaves of shade tolerant genotypes were wider and thinner and also contained higher chlorophyll especially for chlorophyll b than that of shade sensitive genotypes under low light intensity.   Key words :  Low light intensity, tolerant genotype, leaf area, chlorophyll, specific leaf weight
Pola Pewarisan Adaptasi Kedelai (Glycine max L. Merrill) terhadap Cekaman Naungan Berdasarkan Karakter Morfo-Fisiologi Daun , Kisman; , Trikoesoemaningtyas; , Sobir; Nurul Khumaida; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 1 (2008): 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 (57.816 KB) | DOI: 10.24831/jai.v36i1.1338

Abstract

The objective of this study was to analyze the inheritance pattern of soybean adaptation to shade stress based on leaf morpho-physiological characters. Genetic materials used in this study consisted of 22 plants of low irradiance (LI)-tolerant genotype (Ceneng) and 22 plants of LI-sensitive genotype (Godek); 21 plants of F1 (Ceneng x Godek); and 114 plants of F2 populations (derived from F1). These populations were planted under shading of paranet 50%. The population was arranged in a Randomized Complete Block Design with two replicates. Analysis of inheritance of soybean adaptation involved estimation of heritability (broad sense) and gene action. Results of this study showed that: adaptation of soybean to low light stress based on characters of yield per plant was highly heritable (68% of broad sense) with partial dominant mode of action. Characters of leaf area and specific leaf weight were highly (68% of broad sense) and moderately (48% of broad sense) heritable, respectively, with additive mode of action. Soybean adaptation based on leaf physiological characters (chlorophyll contents) was highly heritable (70% - 86% of broad sense) in epistatic mode of action.   Key words:  Soybean, leaf morpho-physiological character, heritability, gene action
Respon Beberapa Genotipe Kedelai Terhadap Tingkat Cekaman Kekeringan Tanah Ultisol , Hapsoh; Sudirman Yahya; T. M. H. Oelim; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 3 (2004): 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 (628.629 KB) | DOI: 10.24831/jai.v32i3.1456

Abstract

This research was aimed to find out the tolerant and susceptible soybean genotypes to drought stress. Twenty two genotypes were tested on three levels of drought stress, based on soil moisture conditions: 80% of field capacity (FC ), 60% FC and 40% FC. The experiment was conducted in plastic house at the experimental field of Meteorological Station, Sampali, Medan, from February to May 2000. The results show that increasing on the severity of drought caused significantly reduced growth and yields, which indicated by the reduction on shoot dry weight, stem diameter, filled pod number, seed number/plant and seed dry weight. The level of growth and yield reductions varied 1 among genotypes. The highest variation was shown at the drought level of 60% FC. Sindoro and Lokon were selected as tolerant and susceptible genotypes, consecutively. It was concluded that the adaptation of tolerant plants strongly related to their ability to improve the root system and to reduce the transpiration surfaces. Key words: Soybean, Drought, Tolerant, Susceptible
Evaluasi Ketenggangan Galur Padi Gogo terhadap Cekaman Aluminium dan Efisiensi Penggunaan Hara Kalium Desta Wirnas; Amris Makmur; Didy Sopandie; Hajrial Aswidinnoor
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 2 (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 (764.354 KB) | DOI: 10.24831/jai.v30i2.1486

Abstract

 A study was conducted to reevaluate 15 upland lines previously selected in a field experiment and nutrient culture experiment or tolerance to aluminum toxicity and potassium efficiency in the plastic house of Center for Crop Improvement Studies, Tajur, Bogor. The experiment was conducted in pot culture using Red Yellow Podzolic soil from Jasinga, Bogor. Two level of AI stress (no AI stress and AI stress with pH 4.8, Al saturation 80%, and exchangeable Al 16.6 mei/IOOg) and two levels of potassium fertilizer (6 kg K2Olha and 60 K2Olha) were applied. The study showed that the upland rice lines performed poorer under AI-tress condition compared to under non stress condition in plant heigl at harvest, total number of  tiller, number of productive tiller, length of spikelet and grain weight/pot. The performance of the upland rice lines was also significantly different under different level of potassium fertilizer in total number off tiller and nun1ber of productive tiller. Lines that showed significant difference in its performance under AI-stress and non stress condition were consiidered as tolerant lines. The result showed that Lalantik Bamban, Sigundil,CT65 I 0-24-3- I, Hawara Bunar, Ketombol, and Grogol were classified as AI-tolerant and K-efficient lines. Key word: Upland rice, Aluminium, Potasium
Co-Authors , Hamin , Kisman , Kisman , Suharsono , Syafruddin , Tasliah . SUHARSONO . SUWARNO A. HAITAMI A.A. Ketut Agung Cahyawan W Abd. Aziz Syarif ABDUL KARIM MAKARIM Abdul Munif Abdul Qadir Adolf Pieter Lontoh, Adolf Pieter Agus Purwito AHMAD JUNAEDI AKIHO YOKOTA AKIHO YOKOTA Akiho Yokota Aksarah Pas, Aris Alce Ilona Noyaa Alifiya Herwitarahman Amris Makmur Amrullah Amrullah Anas D Susila Anas Dinurrohman Susila Angelita Puji Lestari ANGELITA PUJI LESTARI Annisa Fadila Ardie, and Sintho Wahyuning Ardie, dan Sintho Wahyuning Arvita Netti Sihaloho, Arvita Netti ASMARLAILI SAHAR Atang Sutandi Azri Kusuma Dewi Azri Kusuma Dewi Budi Mulyanto Careca Sepdihan Rahmat Hidayatullah Chairani Hanum Chairani Hanum Christoph Leuschner Deden Derajat Matra Desta Wirnas Dhika Prita Hapsari DWI ANDREAS SANTOSA Edi Santosa Edi Santosa Edi Santosa Efendi, Darda Enny Sudarmonowati Enny Sudarmonowati Enung Sri Mulyaningsih Enung Sri Mulyaningsih Enung Sri Mulyaningsih Eny Widajati Erma Prihastanti Fadliah Salim Faqih Udin GUSMAINI GUSMAINI Gusmaini Gusmaini GUSMAINI GUSMAINI, GUSMAINI HAJRIAL ASWIDINNOOR Hajrial Aswidinoor Halimatus Syahdia Hasibuan Hamim Hamim Hanedi Darmasetiawan HANNA ARTUTI EKAMAWANTI Hapsoh Hidayah, Agus Nur I Ketut Suada IBNUL QAYIM Ida Hanarida Soemantri Ika Mariska Ika Mariska Ika Mariska Ilona Noyaa, Alce Imam Widodo Inez Hortense Slamet Loedin Inez Hortense Slamet Loedin Inez Hortense Slamet-Loedin INEZ HORTENSE SLAMET-LOEDIN Iskandar Lubis Joko Prasetiyono Joko Prasetiyono Juang Gema Kartika K. Idris Karlin Agustina Kartika Ning Tyas Ketty Suketi KINYA AKASHI KINYA AKASHI Kisman Kisman Komaruddin Idris La Muhuria Laela Sari Laela Sari laela Sari, laela Lukman Chakim Luluk Setyaningsih Lutfy Ditya Cahyanti, Lutfy Ditya M. A. Chozin Maemonah, Maemonah Mahpuzah, Marfiatun Mariska, Ika Masdiar Bustamam Masdiar Bustamam Masumi Moritsugu Matra, Deden Derajat Maya Melati Mayang Sari Meliala, Merry Gloria Moh. Yani Momongan, Jorex Daniel Muhamad Syukur Muhammad Ahmad Chozin Muhammad Arif Yudiarto Muhammad Jusuf Munarti Munif Ghulamahdi Muzuni, Muzuni Nani Heryani Nasution, Annisa Andrini Ni Made Armini Wiendi NURLIANI BERMAWIE Nurliani Bermawie Nurliani Bermawie Nurul Khumaida Nurul Khumaida Osmat Azzam Jefferson Osmat Azzam Jefferson, Osmat Azzam OuwerkerV, Pieter BF Pieter B.F. Ouwerkerk Pieter BF OuwerkerV Purwono, Purwono Putri Andini Mandasari RADITE TISTAMA Ragapadmi Purnamaningsih RAGAPADMI PURNAMANINGSIH Ratna Yuniati Rini, Erin Puspita Roedhy Poerwanto Rossa Yunita Rossa Yunita Rossa Yunita Rosyad, Astryani S. Suharsono Saepudin, Adam Sandi, Yusri Iryas Sandra Arifin Aziz Saragih, Ery Leonardo Sari, Laela Sarsidi Sastrosumarjo SATRIYAS ILYAS Satya Nugroho Sinaga, Falencia Sinaga, Parlin H. Sintho Wahyuning Ardie Siti Marwiyah Slamet Loedin, Inez Hortense Sobir Sobir Soekisman Tjitrosemito Soeranto Human Sri Mulatsih SRI RAHAYU Sri Setyati Harjadi Sri Wilarso Budi Sudarmonowati, Enny Sudirman Yahya Sudirman Yahya Sugianta Sugianta Sugianta, Sugianta SUGIONO MOELJOPAWIRO Sugiono Moeljopawiro Suharsono . Suharsono Suharsono Suharsono Suharsono Suhartanto, Muhammad Rahmad Sumiati, dan Sungkono Sungkono Supijatno Surjono Hadi Sutjahjo Suwarno Suwarno Suwarno Suwarno Suwarto Suwarto Suwarto Syamsidah Rahmawati Syamsidah Rahmawati, Syamsidah T. Kawasaki T. M. H. Oelim Tanari, Yulinda Tintin Suhartini Titin Handayani Toshio Kawasaki Toyip Toyip TRI KOESOEMANINGTYAS Tri Lestari Trikoesoemaningtyas Utami, Nita Nur UTUT WIDYASTUTI UTUT WIDYASTUTI Utut Widyastuti Utut Widyastuti Suharsono Utut Widyastuti Suharsono Wage Ratna Rohaeni Wahju Q. Mugnisjah Wahju Qamara Mugnisjah Yadi Setiadi YADI SETIADI Yadi Setiadi Yonny Koesmaryono Yopie Moelyohadi Yuli Sulistyowati YULIN LESTARI Yuniati, Ratna Yunita, Rossa