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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) AGRITROP Jurnal Natur Indonesia Jurnal Teliska Jurnal AgroBiogen AGRIVITA, Journal of Agricultural Science Planta Tropika Jurnal Ampere Jurnal Penelitian Karet JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Penelitian Pertanian Tanaman Pangan Journal of Tropical Crop Science Sainstek : Jurnal Sains dan Teknologi Buletin Palma International Journal of Research in Vocational Studies (IJRVOCAS)

Sudirman Yahya

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

Author-ID : 421456

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Exogenous Application of Calcium, α-Naphthaleneacetic Acid and 1Methylcyclopropene Improved Fruit Growth and Oil Yield of Oil Palm (Elaeis guineensis Jacq.) Grown on Ultisol Sopandie, Didy; Hidayah, Agus Nur; Yahya, Sudirman
AGRIVITA Journal of Agricultural Science Vol 46, No 1 (2024)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v46i1.4115

Soil acidity is one of the main factors limiting the growth and sustainable production of oil palm in Indonesia. The aim of this study was to evaluate the effect of various exogenous compounds on improving fruit growth and oil yield of palm oil grown on Ultisol. The experiment employed three treatments which were arranged in a Randomized Complete Block Design (RCBD) with three replications. The treatments were: 1-MCP (0, 100, 200, and 300 ppm), CaCl2 (0 and 50 ppm) and NAA (0 and 200 ppm). Application of Ca2+, NAA and 1-MCP either single or in combination improved fruit growth and oil yield by increasing almost all variables, except the number of bunches, bunch weight and fruit set. The 100 ppm 1-MCP + 50 ppm Ca2+ + 200 ppm NAA treatments showed the highest oil-to-dry mesocarp content. To get the highest oil to bunch (OB), the combination of 100 ppm 1-MCP + 200 ppm NAA; 50 ppm Ca2+ + 200 ppm NAA, and a single treatment of 50 ppm Ca2+ were very promising to be utilized.

Kandungan Beberapa Zat Endogen pada Buah Retensi dan Buah akan Rontok pada Mangga Sakhidin, Sakhidin; Purwoko, Bambang S.; Yahya, Sudirman; Poerwanto, R.; Susanto, Slamet; Abidin, A. S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 2 (2006): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to study the relationship between fruit drop and contents of auxin, polyamines, ACC, total sugar, and starch. Cultivars of mango used were Gadung 21 and Lalijiwo.The persisting fruit and abscising fruits were used to quantify auxin, polyamine, ACC, total sugar, and starch. The content of polyamine and ACC was determined on pericarp, auxin on seed, whereas the content of starch and total sugar was determined on mesocarp. The result of research showed that fruit drop was preceded by low content of auxin that increased the sensitivity of abscission zone to ethylene. The increased sensitivity of abscission zone to ethylene was supported by low content of polyamine and high content of ACC. The abscising fruit has high content of starch, but low in total sugar content. Key words : Mango, persisting fruit, abscising fruit, auxin, polyamine, ACC, total sugar, starch

Evaluasi Pertumbuhan dan Hasil Beberapa Genotipe Cabai (Capsicum annuum L.) untuk Toleransi terhadap Cekaman Aluminium Purnomo, D. Wasgito; Purwoko, Bambang S.; Yahya, Sudirman; Sujiprihati, Sriani; Mansur, Irdika
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 3 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to evaluate growth and yield in response to aluminum (Al) stress in several genotypes of chilli (Capsicum annuum L.). The research was conducted in University Farm of IPB, Cikabayan, Bogor from February to August 2006. Ultisol soils from Gajrug (Lebak, Banten) in polybag with pH 4.2, Al-dd 30.08 me/ 100 g and Al-saturated 83.81% was used in this experiment. Eight genotypes of chilli (4 tolerant and 4sensitive) were tested on two different conditions, in media without Al-stress condition (Al-saturated 0.77%) and wich Al-stress (Al-saturated 60.85%). Characters observed were plant height, shoot dry-weight, total number of fruits per plant, number of fruit harvested per plant, fruit dimension (length and diameter), fruit weight harvested per plant, and weight of each fruit. The results showed that there were differences of response to Al-stress among genotypes on the study. PBC 619 and Jatilaba were selected as tolerant genotypes, while Cilibangi 3 and Helm were sensitive. This evaluation of agronomic characters for tolerant and sensitive to Al-stress appeared very consistent with root bioassay results. Based on this result, the root bioassay method can be used to select chili genotypes for Al-stress tolerance. Key words: Growth and yield evaluation, aluminum stress, Capsicum annuum, ultisol soil.

Tanggap Pertumbuhan dan Hasil Cabai (Capsicum annuum L.) terhadap Inokulasi Fungi Mikoriza Arbuskula pada Tanah Ultisol Purnomo, D. Wasgito; Purwoko, Bambang S.; Yahya, Sudirman; Sujiprihati, Sriani; Mansur, Irdika; Amisnaipa, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to test the utilization of arbuscular mycorrhizal fungus (AMF) to improve adaptation ability of chili to aluminum (Al) stress based on growth and yield response in four genotypes of chili (Capsicum annuum L.). The research was carried out at University Farm of IPB in Cikabayan from September 2006 to Maret 2007. The media was Ultisol from Gajrug (Lebak, Banten) in polybag. Four genotypes of chili, PBC 619 and Jatilaba (Al tolerant genotypes), and Cilibangi 3 and Helm (Al sensitive genotypes) were treated with and without inoculation of Gigaspora margarita, and planted further in media without Al stress (Al saturation 0.77%) and Al stress (Al saturation 60.85%). Variables observed were degree of AMF infection, root length, plant height, shoot dry weight, number of harvested fruits, fruit length, fruit weight and weight of harvested fruits. The results showed that inoculation of G. margarita effectively decreased negative influence of Al stress by increasing plant height, shoot dry weight, number of harvested fruit, fruit length, weight per fruit and weight of harvested fruits. Inoculation of G. margarita to Al sensitive genotypes was more advantageous than to tolerant genotypes. The Al sensitive genotypes were adapted to Al stress if they were inoculated with G. margarita. In Al stress condition, inoculation of G. margarita to Al sensitive genotypes increased weight of harvested fruits up to 94.49% in Cilibangi 3 and 80.37% in Helm. Key words: Adaptation, aluminum stress, arbuscular mycorrhizal fungus, Capsicum annuum L., Ultisol

Perbaikan Pertumbuhan dan Kualitas Tanaman Lidah Buaya di Tanah Gambut dengan Aplikasi Mikoriza Arbuskula dan Pemupukan Sasli, Iwan; Yahya, Sudirman; Sudradjat, ,; Setiadi, Yadi; Sudarsono, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): 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 aimed at studying the effectiveness of mycorrhiza, inorganic and organic fertilizer (fish and shrimp waste) on growth, yield and quality of Aloe in peat soil. The study was conducted on peat area, North Pontianak, West Kalimantan. Mycorrhizal application levels (without mycorrhiza, Mycofer and mycorrhizal from pineapple's rhizosphere) were as main-plot. The inorganic fertilizer (composition of N:P:K:Mg) rates (without inorganic fertilizer; 5 : 4 : 7.5 : 2.5 g/plant; 10 : 8 : 15 : 5 g/plant; and 20 : 16 : 30 : 10 g/plant) were as sub-plot. Organic fertilizers: (fish; shrimp; fermented fish; and fermented shrimp wastes) were as sub-sub plot. The observed variables were: leaf width, leaf length, leaf fresh weight, plant dry weight, and nutrient uptake (N, P, K, Mg). The results showed that mycorrhizal application improved growth performance and increased N, P, Mg uptake. The best plant growth performance was achieved by N : P: K : Mg =10 : 8 : 15 : 5 g/plant and fermented shrimp waste treatments. The highest N, P, K, Mg nutrients uptake was achieved by application of fermented organic fertilizer. Combination of mycorrhiza from pineapple's rhizosphere with fermented fish and shrimp waste resulted in higher amino acids content compared to standard cultivation of Aloe vera Center in Pontianak. Key words: Aloe vera, arbuscular mycorrhiza, inorganic fertilizer, organic fertilizer

Kejut Tanam Cara Pindah Cabutan pada Pembibitan Kelapa Sawit Yahya, Sudirman; Manurung, Awilham
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 1 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

To find out the possibility of long distance transplanting from the pre to main nursery of oil palm, a research had been conducted to study the effect of bare-root (soiless) and delayed transplanting on seedling growth. The research was a two factor factorial experiment, seedling age of 2 and 3 months, and 5 level transplanting times: conventional (direct planting), bare-root and delayed-transplanting for 1, 3, 5, and 7 days. The experiment was arranged in a randomized complete design. The results indicated that 95 - 100% of the seedlings with bare root and delayed transplanting were successfully survive and continuous to grow. Two month old seedlings were able to overcome the transplanting shock better than three month old seedlings. The seedling of bare-roots and delayed- planting for up to 7 days, still performed a normal growth and there was no significant difference among time of delayed-plantings. The seedlings of delayed transplanting grew two weeks later than the conventional transplanting Key words: Transplanting shock, Bare-root method, Delayed planting.

Pola Kerontokan Buah Tiga Kultivar Mangga Sakhidin, ,; Purwoko, Bambang S .; Poerwanto, Roedhy; Susanto, Slamet; Yahya, Sudirman; Abidin, Ahmad S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 2 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Information on the pattern of fruit drop of mango is required to determine the appropriate method and time in reducing fruit drop. By this methodf, fruit retention or number of harvested fruit of mango can be increased.The aim of this research was to determine the pattern of fruit drop of Gadung 21, Manalagi 69 and Golek 3 I . The results of this researchs howedt hat the pattern of fruit drop of Gadung2 1, Golek 31 and Manalagi 69 was similar. All cultivars I showed that there was one peak (the highest number of fruit drop) in fruit drop. It occurred at 6 days after anthesis (DAA). After 24 DAA, the number offruit drop was constant, namely near to zero. It occurred until harvest.Key words: Mango, Fruit drop, Fruit set

Respon Beberapa Genotipe Kedelai Terhadap Tingkat Cekaman Kekeringan Tanah Ultisol Hapsoh, ,; Yahya, Sudirman; Oelim, T. M. H.; Sopandie, Didy
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

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

Hubungan Antara Penggenangan Dini dan Potensi Redoks, Produksi Etilen dan Pengaruhnya terhadap Pertumbuhan dan Hasil Padi (Oryza sativa) Sistem Tabela Arsana, IGK. Dana; Yahya, Sudirman; Lontoh, A. P.; Pane, H.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 31 No. 2 (2003): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The research was conducted at the Rice Research Center, Sukamandi and at the Biotechnology Research Center,Bogor. A two factors factorial experiment was arranged on Split Plot Design, where three levels of submerging: saturated, 5 and 10 cm in depth were assigned as the main plot and three lowland rice genotypes: IR 64, S. 3254-29-21-2 and S. 3382-2d-16-3 lines as subplots. The results indicate that submerging revealed a significant effect on increasing the redox potential, pH, ethylene production, and yield, however decreasing weed infestation. Almost there was no significant difference among three genotypes on their ethylene, growth and yield, and also on their responses to the submerging treatment. Furthermore, submerging at 5 cm depth increased yield by 110 kg ha-I, or about 1.5 percent compared to just saturated condition. On the other hands, submerging at 10 cm depth increased yield by 612 kg-I. In term of varieties, the promising lines of S,3254-29-21-2 and S.3382-2d-16-3 did not prove to have a difference with ' IR 64, in terms of their tolerance to early submerging condition. , " Key words: Submnerging, Redox potential, Ethylene, Direct sfeeding system

Peranan Mikoriza VA, Rhizobium dan Asam Humat pada Pertumbuhan dan Kadar Hara Beberapa Spesies Legum Penutup Tanah Utama, M. Zulman Harja; Yahya, Sudirman
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 utilization of acid mineral soil often faces the problem of Al toxicity and low available P. The efforts to improve root function and neutralize the effect of high available Al are becoming important for increasing the growth of legumes, particularly as the cover crops at the plantation on acid soil. This research was aimed to find the effect of VA mycorrhyza inoculation, rhizobium, and humic acid on the growth and nutrient content of four different legume species. It was a three factor factorial experiment arranged in a completely randomized design with three replications. The first factor was four legume species: Calopogonium mucunoides, CaloPogonium ceurelieum, Centrosema pubescens and Puerari iavanica the second factor was four different inoculants: none (M0), MVA (M1), rhizobium (Mz), MVA + rhizobium (M3); the third factor was two rates of humic acid application: without (Ho) and with humic acid (H1) The results proved the positive effect of those three factors on the growth of shoot and roots. The responses of root growth on microorganism inoculations and humic acid were different among the legume cover crop species. The role of humic acid was significantly better if there was a synergism between MV A and rhizobium. Key words: Mycorrhyza, Rhizobium, Humic acid, Legume cover crop

Co-Authors , Amisnaipa , Handoko , Sakhidin A. P. Lontoh A. S. Abidin AA Sudharmawan, AA Ade Wachjar Ade Wachjar ADEEL ABDUL KARIM ALTUHAISH Agus Purwito Ahmad S. Abidin Aiyen Tjoa Alfian, Anggra Amperawan Amperawan, Amperawan Andi Besse Poleuleng Ani Kurniawati ASMARLAILI SAHAR Awilham Manurung Bambang S . Purwoko Bambang S. Purwoko Bari, Abdul Bofynna, Pio Agma Chairani Hanum Chairani Hanum D. Wasgito Purnomo Desta Wirnas Dharend Lingga Wibisana Diana Sofia Hanafiah DIDI SOPANDY Didy Sopandie Edvanido, Hijrianto Febbiyanti, Tri Rapani Febriani, Alda H. Pane Hapsoh Haridjaja, dan Oteng Haridjaja, Oteng Hariyadi Hariyadi Hariyadi Hariyadi, nfn Herdhata Agusta HESTI PUJIwATI Hesti Pujiwati Hidayah, Agus Nur Hidayat Saputra, Hidayat Ida Nur Istina, Ida Nur IGK. Dana Arsana Ilyas Marzuki Irdika Mansur Iwan Sasli KOMARUDIN IDRIS Kukuh Murtilaksono Kusumawati, Sri Ambar M A Chozin M. Yahya Fakuara M. Zulman Harja Utama Mahulette, Asri Subkhan Marniati, Yessi Miftahudin . Mira Ariyanti Muhammad, Fakhry Munif Ghulamahdi Nofiansah Nope Gromikora Nunyai, Aslina Putri Nurita Toruan-Mathius Pambudi, Ignatius Harry Tri Pienyani Rosawanti Purwono Purwono, Purwono R. Poerwanto Rasyad, Sabilal Retno Prihatini Roberdi ,, Roberdi Roedhy Poerwanto Rumiasih Saijo Sakhidin Sakhidin Sandra A. Aziz Sandra Arifin Aziz Simanjuntak, Hiskia Siregar, Hasril H. Slamet Susanto Sobir Sobir Sofiana, Yelli Sofyan Zaman Sri Mulatsih Sri Mulatsih SRIANI SUJIPRIHATI Subandi, Subandi Sudarsono Sudradjat , Sudradjat Sudradjat Sudrajat Suryo Wiyono Sutarta, Edy Sigit Sutarta Sigit Sutoro, Sutoro Suwarto Suwarto Suyadi, Andri Syaiful Anwar T. M. H. Oelim Tony Liwang Tri Rapani Febbiyanti, Tri Rapani Trikoesoemaningtyas Wahyu Hidayat WAHYU Q. MUGNISJAH Wahyudin, Cecep Widodo Widodo Yadi Setiadi Yani, Herman Yayat Hidayat Yeni Lucia Yenni Asbur Yoga Yuniadi

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