Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
ISSN : 20852916     EISSN : 23373652
urnal Agronomi Indonesia, sebelumnya bernama Buletin Agronomi, terbit sejak 1962, diterbitkan oleh Departemen Agronomi dan Hortikultura Fakultas Pertanian, Institut Pertanian Bogor dan Perhimpunan Agronomi Indonesia (PERAGI). Jurnal Agronomi Indonesia merupakan media untuk publikasi tulisan asli yang berkaitan dengan budidaya tanaman secara luas, dalam Bahasa Indonesia maupun Bahasa Inggris. Naskah dapat berupa: hasil-hasil penelitian mutakhir (paling lama 5 tahun yang lalu), ulasan (review)singkat, analisis kebijakan atau catatan penelitian (research note) singkat mengenai teknik percobaan, alat, pengamatan, hasil awal percobaan (preliminary result).
Articles 5 Documents
Search results for , issue " Vol 30, No 3 (2002): Buletin Agronomi" : 5 Documents clear
Pengaruh Inokulasi Dua Spesies Cendawan Mikoriza Arbuskula dan Pemupukan Fosfor terhadap Pertumbuhan dan Serapan Fosfor Tajuk Bibit Kelapa Sawit ( Elaeis guineensis Jacq.) Wachjar, Ade; Setiadi, Yadi; Yunike, Ninin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 30, No 3 (2002): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The objective of this experiment was to evaluate the effect of two Arbuscular Mychorrhizal Fungi (AMF) species and phosphorus fertilization on growth and shoot P-uptake of oil palm seedling. Experiment was conducted from September 1999 to March 2000 at Darmaga, the Cikabayan Experiment Station of Bogor Agricultural University. The experiment was arranged in Randomized Bloqk Design with five replications. The first factor was species of AMF. consisted of without AMF. inoculation with Glomus aJlJlreJlatum (OG-I05) and inoculation with Glomus manihotis (INDO-I). The secondfactor was dosage of phosphorus consisted of 0, 0.577, 1.154 and 1.734 g P/seedling.The Arbuscular Mycorrhizal Fungi did not increase height of seedling, leaves total (except on leaves total at 28 weeks after planting), shoot biomass, total biomass. and shoot P-uptake compare to the control. Shoot P-uptake was significantly decreased on seedling which was inoculated with G. manihotis compare to inoculated G. aJlJlreJlatum and control. Phosphorus fertilizer and it´s interaction with species of AMF did not give any influence on growth and shoot P-uptake of the oil palm seedling. Keywords.. Mycorrhizal fungi. Phosphorus fertilization, Oil palm
Deteksi Dini Tanaman yang Mengalami Kekurangan Air untuk Menentukan Waktu Pengairan Bahrun, Andi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 30, No 3 (2002): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

Detection of water stress in olants may help to schedule irrigation and improve water use efficiency. The objective of this study was to determine the reflectance vegetation index (RVI) obtained from remote sensing of the crops duringg soil drying and fully watered plots as a tool for detection of water stress. RVI was calculated from incoming (PARi) and reflected (PARc) photosynthetically active radiation and from incoming (NIi) and reflected (NIc) near infrared radiation using the equation RVI = (NIc / NIi) / PARc / PARi). the effect of soil drying on leaf expansion, biomass accumulution, abscisic acid (ABA) in xylem sap and leaf water potential were used as drought indicators in maize grown in lysimeter in the field. Leaf area expansion and biomass acimulation were decreased by drought. The reflectance vegetation index was measured when green crop area index increased during the vegetation stage of growth. Xylem (ABA) increment coincided with decrease in RVI of drought plants. Changes in RVI of drought plants which were compared to RVI of fully irrigated reference plants occurred at early stage of drought stress when relative available soil water content was 60%. RVI was higly correlated with green crop area index (R2 = 0.84) and biomass accumulation (R2 = 0.88). We suggest that measurements of RVI in drought field plants compared to RVI measurements of fully irrigated reference plants within the same field can be used as an early warning system of irrigation.Keyword : Abscisic acid, Drought Reflectance, Water
Aktivitas Hormon Endogen dalam Buah Anggur Muscat ofAlexandria Muda Tanpa Biji Hasill Induksi Antibiotika Widodo, Winarso Dradjad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 30, No 3 (2002): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The experiment was conducted to determine the activity of endogenous hormones in young seedless berry of Muscat of Alexandria (MOA) grapes induced by streptomycin (SM) and spectinomycin (SE). Young berries dipped in 200 ppm M or 200 ppm SE at 3 days before full-bloom and untreated berries were analyzed for the activity of . endogenous auxin, cytokinin. gibberellin and abscisic acid (ABA). The experiment was conducted at the Laboratory of ! Pomology, Faculty of Agriculture, Okayama University, Japan, from February 1999 to August 1999. Both SM and SE reatments did not affect ABA activities of young berries. Cytokinin activity were slightly decreased by SM and SE treatments at 6 days after treatment (DAT) and became more severe at J 0 and J 3 DAT The response of berry auxin activity to antibiotic treatment was similar but stronger than cytokinins. Antibiotic treatments significantly decreased the activity ofGA at 6 and 10 DAT   1 Keywords,´ Antibiotics, Endogenous hormones, Spectinomycin, Streptomycin  
Studi RegeDerasi daD Produksi Protoplas Mesofil Daun Beberapa KlOD TanamaD Kentang (Solanum tuberosum L.) . Asnawatr, ,; Wattimenal, G. A.; Machmud, M.; Purwito, Agus
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 30, No 3 (2002): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The objectives of these experiments were to obtain medium composition to enlarge leaf size for protoplast production and to obtain medium composition for plant regeneration. The result showed that the best medium to produce the larger leaves was medium MS with double concentration of macronutrients without hormone supplemented with Morel vitamins, 3% (w/v) sucrose and. 7 g/l agar. This medium produced leaves with diameter of 1.44 cm comparing to control medium MS with 0.67 cm in diameter. Medium MS containing 0.1 mg/l 1AA, 0.5 mg/l Zeatin and 0.5 mg/l GA3 was able to regenerate vigorous shoots of 7 clones. Protoplast isolation of 5 clones using enzyme composition containing 0.5 % cellulase Onozuka RS, 0.05 %, pectolyase Y-23, 0.05 % MES, 9.1 % mannitol and pH 5.5, without CP W medium produced protoplast with variable yield from 10.50 x 1oJ protoplast/g leaves for Atlantic to 46.58x 1oJ protoplast/gforBF15.   Keyword: Leaves size, Plant regeneration, Potato, Protoplast i
Lebar Bedengan untuk Genangan dalam Parit pada Tanaman Kedelai Indradewa, Didik; Sastrowinoto, Soemartono; Notohadisuwarno, Supriyanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 30, No 3 (2002): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

saturated soil culture the width of the beds were recommended between I m and 2 m, which require more labor to dig the furrows. An experiment was done to study the effect of the width of beds and to determine the optimal bed´s width. The experiment was done on Regosol soil in Sleman Regency, Yogyakarta using Randomized Complete Blocked Design with three blocks. The treatments were flood irrigation as control and saturated soil culture with I, 2, 3 and 4 m . wide of beds. Observations were done on soil moisture, physiological processes, growth and yield of soybean. The result of the experiment showed that saturated soil culture stabilized the soil moisture around field capacity, increased physiological processes, growth of the plant and increased the seed yield 81 %from 1.17 t ha-1 up to 2.12 t ha-l. There was no significant different on the effect of width of the beds, therefore 3-4 m bed´s width was recommended. Keywords: Saturated soil culture, Soybean, Bed´s width.

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