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 7 Documents
Search results for , issue " Vol 22, No 1 (1994): Buletin Agronomi" : 7 Documents clear
PENGARUH PANJANG AKAR TUNGGANG DAN WAKTU SIMPAN SETELAH PENCABUTAN TERHADAP PERTUMBUHAN STUM ALBIZIA (Paraserianthes/alcataria L. Nielse) Sulistyono, Eko; Argasasmita, Muchtar; Nurharyadi, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

This experiment was aimed to study the effect of tap root length and storage duration on growth of Sengon stump. The field experiment was carried out as a two factors factorial experiment. The treatments were arranged in Randomized Block Design with three replications. The tap root length of 25 %, 50 %, 75 %, and 100 % of original tap root length were the levels of first factor. The storage duration 0 hours, 24 hours, 48 hours, 72 hours, and 92 hours after revoking were the levels of second factor. The tap root length affected shoot to root ratio. The least damage root gave the lowest shoot to root ratio. The root length 25 % gave the highest shoot to root ratio, but the difference between 50 %, 75 %, and 100 % were not significant. At 18 weeks after planting, the shoot diameter, shoot height, leaf number, shoot dry weight and root dry weight were not affected by tap root length and storage duration after revoking. Interaction between two factors did not effect all of the observed variables.
PENGARUH KONSENTRASI DAN SAAT PEMBERIAN SITOZIM TERHADAP PERTUMBUHAN DAN HASIL KAPAS (Gossypium hirsutum L.) Purwono, ,; Herlianthy, Sri Lilis
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

Experiment to investigate the effect of concentration and time of application of Sitozim was conducted at greenhouse in Sindangbarang Experimental Station, Bogor Agricultural University, Bogor, from February to July 1993. Four levels concentration (0, 1.25, 2.5, and 3.75 mi/l) and three application time (vegetative, generative, and vegetative+generative stage) were applied. The experimental design was Randomized Block Design with three replications. Vegetative growth was not affected by the treatments. Higher concentration gave higher weight of boll per plant, seed-cotton weight per plant, and fibre weight per plant. However, there were no significant effects of all treatments on fibre quality.            
PENGARUH PUPUK FOSFOR DAN KALIUM TERHADAP PERTUMBUHAN DAN HASIL BENIH KENAF (Hibiscus cannabinus L.) PADA TANAH LATOSOL Wachjar, Ade; Sutidjo, Donathus; Bahri, Syaiful
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The experiment was aimed to study the effects of phosphorous and potassium fertilizers on growth and seed yield of kenaf on Latosol. The experiment was carried out at Tajur Experimental Station, IPB Bogor, from January 1991 to July 1991. The seed germination test was held in the Laboratory of Seed Science and Technology IPB, Bogor. Kenaf variety Hc-48 was used in this experiment. The two factor factorial experiment was arranged in Randomized Block Design with 3 replications. The first factor was 4 levels of phosphorous fertilizer: 0, 30, 60 and 90 kg P2O5/ha. The second factor was 3 levels of potassium fertilizer: 0, 60 and 120 kg K2O/ha. Phosphorous and potassium fertilization each increased significantly plant height, stem diameter, the number of mature and total fruit per plant, seed yield per hectar: however there were no significant effect on percentage of mature fruit, number of seeds per fruit, weight of 1,000 seeds and seed germination. The dosage of phosphorous fertilizer until 90 kg P2O5/ha still increased yield linearly, otherwise the optimum dosage of potassium fertilizer was reached on 69.31 kg K2O/ha with seed yield 2,036.48 kg/ha. There was no interaction effect between P and K fertilization.
HUBUNGAN ASAM LEMAK RANTAI PENDEK, STRATIFIKASI, DAN GIBERELIN PADA PERKECAMBAHAN EMBRIO APEL Purwoko, Bambang S.; Powell, Loyd E.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The objective of the present experiment was to determine the inhibitory properties of short chain fatty acids (SCFA) in apple embryo germination. The result showed that the SCFA inhibition on apple embryo germination was dependent on chain length and was in the millimolar range. No synergistic effect was observed when SCFA were applied simultaneously. The inhibition of SCFA was reversed by GA4+7. A higher concentration of SCFA was needed to inhibit embryo germination as the stratification progressed.
PENGARUH PACLOBUTRAZOL TERHADAP PERTUMBUHAN DAN PEMBUNGAAN JERUK SATSUMA MANDARIN PADA BEBERAPA KONDISI SUHU Poerwanto, Roedhy; Inoue, Hiroshi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

Two experiments were conducted at phytotron to investigate the effects of paclobutrazol on vegetative growth and flower bud differentiation of Sat sum a Mandarin (Citrus unshiu Marc.) grown under different temperature conditions. One-year-old Satsuma Mandarin trees budded onto trifoliate orange rootstocks were used in these experiments. The trees were planted in root observation chamber (Experiment I) or Wagner´s pot (Experiment II) in late, March of 1988. In experiment I the treatments were temperature (20 & 30oC) and paclobutrazol (treated and not treated). Paclobutrazol was applied 3 times to the soil at the rate of 0.5 gram a.i. per tree per application. The growth of shoots and roots were observed at 5-day intervals. In experiment II the treatments were temperature (15, 20, 25, 30°C and field condition) and paclobutrazol (sprayed to the leaves, drenched to the soil, and none). Paclobutrazol was applied 3 times; foliar application was 1000 ppm and soil application was 0.05 grams a.i. per tree per application. Temperature treatments were done from June to December, 1988. At the end of the treatments, the trees were defoliated and then exposed to 25°C to observe flower bud development. . Paclobutrazol inhibited shoot and root elongation effectively. Paclobutrazol decreased dry weight of the plant top (trunk, stem and leaves), but increased root dry weight. Paclobutrazol also increased the root diameter by increasing the number of-cortex cells, although the cell diameter was not different. Paclobutrazol affected nutrients distribution; it decreased nutrients in the top part of trees, and increased nutrient in the root. Effects of paclobutrazol in flower bud differentiation was not significant.
PENGARUH LIMBAH SAGU DAN PEMUPUKAN N, P DAN K TERHADAP PERTUMBUHAN BIBIT ALBIZIA (Paraserianthes falcataria L. Nielse) Hariyadi, ,; Argasasmita, M.; Arifin, Z.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

This experiment was carried out at Cikarawang Research Station, IPB from February to July, 1992. The aim of this experiment was to study the effect of sago waste and N, P, K fertilizers on growth of albizia seedling. This experiment was arranged with Randomized Complete Block Design. There were two factors involved i.e. four different media based on the composition of topsoil and sago waste (0, 25, 50 and 70 %),´ and three rates of N; P, K fertilizer. The medium consisted of topsoil and 25 % of sago waste tended to give better seedling growth than the others. Fertilization treatments did not affect seedling growth.
PENGARUH POLUTAN Pb TERHADAP PERTUMBUHAN DAN PERKEMBANGAN TANAMAN Lantana sellowiana dan Ixora chinensis Nurisjah, Siti; Wattimena, G. A.; Syamsudin, Endang; Taslim, Lily
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 22, No 1 (1994): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

An experiment on the effect of Pb pollutants on the growth and development of two widely used ornamental plants, i.e. Lantana sellowiana and Ixora chinensis, was conducted at the IPB Greenhouse, Baranangsiang, Bogor from mid September 1990 to the end of December 1990. The experiment aimed to determine the effect of concentration levels of Pb in the form of PbCl2 upon the growth and development of the two ornamental plants. The experiment consisted of two units, each of which was based on the complete randomized design. Treatments consisted of four concentration levels of PbCI2, i.e. 0, 250, 2500, and 25 000 ppm, applied to each unit with three replications. Observation during 12 weeks showed that treatments with 250 and 2500 ppm PbCl2 did not give significant damage to the growth and development of Lantana sellowiana. Concentration level of 25 000 ppm, however, interfered growth and development of this species six weeks after planting. On the other hand, the concentration levels used in this experiment had no toxic effect on the growth and development of Ixora chinensis.

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