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Rusdi Evizal
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Jurusan Agronomi dan Hortikultura, Gedung C Fakultas Pertanian, Universitas Lampung. Jln. Sumantri Brojonegoro No 1 Gedung Meneng, Bandar Lampung 35145, Indonesia
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INDONESIA
Jurnal Agrotropika
Published by Universitas Lampung
ISSN : 02167662     EISSN : 27457737     DOI : 10.23960
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Scientific article dealing with broad aspects of tropical agronomy including crop production, horticulture, plant pests and diseases, post-harvest, sustainable agriculture, soil science, climatology, ecology, biodiversity, and ethno-agronomy.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 252 Documents
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AMELIORASI BAHAN ORGANIK PADA MEDIA TAILING PASIR PASCATAMBANG TIMAH UNTUK PERTUMBUHAN BIBIT KARET Ismed Inonu; Dedik Budianta; M. Umar Harun; Yakup Yakup; A. Y.A Wiralaga
JURNAL AGROTROPIKA Vol 16, No 1 (2011): Agrotropika Vol.16 No.1 2011
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.618 KB) | DOI: 10.23960/ja.v16i1.4265

Abstract

The objective of this study was to evaluated some organic materials to improve the characteristics of post-mining tin sand tailings and its effect on the growth of rubber ttree. The experiment was conducted at PT Koba Tin nursery Central Bangka District during 5 months. The study was designed according to a factorial randomized completely design with two factors and three replications. The first factor was the type of organic matter ameliorant (chicken manure, oil palm empty fruit bunches compost, and municipal solid waste compost), and the second factor was the proportion of sand tailings, top soil and organic materials (2:1: 1 and 2:1:2, v/v). The results showed that growth of rubber seedlings in sand tailings media derived from tin-postmining which is ameliorated by top soil and organic materials is still lower than growth on unmined land media. The growth of rubber tree seedlings on media with two proportion of sand tailings, one proportion top soil and two proportion of empty fruit bunches compost ( 2:1:2, v/v) two better than other combinations.  Key words: amelioration, manure, compost, rubber tree, sand tailings
PENGARUH KONDISI SIMPAN TERHADAP VIABILITAS DAN VIGOR BENIH Avicennia marina (Forsk.)Vierh. PADA BEBERAPA PERIODE SIMPAN Halimursyadah Halimursyadah
JURNAL AGROTROPIKA Vol 17, No 2 (2012): Agrotropika Vol.17 No.2 2012
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.727 KB) | DOI: 10.23960/ja.v17i2.4281

Abstract

The objective of the research was to determine the optimum storage condition (temperature and relative humidity) during 10 weeks with interval 2 weeks to maintain the seed viability and vigor. The variables were seed moisture content, gemination percentage, speed of germination, index of vigor, time to reach 50% germination, and electrolyte leachates. The research used split plot experi-mental design, with storage condition (AC and room temperature) as the main plot and storage period (0, 2, 4, 6, 8, and 10 weeks) as the subplot. The results showed seed stored at 90% relative humidity (using saturated KCl) and 19-200C temperature for 2 weeks storage periods significantly decrease in germination percentage (66.67%), speed of germination (64.56%), index of vigor (40.00%) and increased in time to reach 50% ger-mination (12.25 days) compared to the control, with germination percentage (94.67%), speed of germination (91.97%), index of vigor (49.33%), and time to reach 50% germination (11.25 days). Seed stored at 90% rela-tive humidity (using saturated KCl) and 27-280C temperature for 2 weeks storage periods showed significant decrease in germination percentage (36.00%), speed of germination (33.21%), index of vigor (21.33%), and increase in time to reach 50% germination (13.41 days) and electrolyte leachates (42.99 μScm-1g-1) as com-pared to untreated with 89.33% germination, 87.98% speed of germination, 49.33% index vigor, time to reach 50% germination (11.75 days), and electrolyte leachates (36.16 μScm-1g-1). Storage condition using saturated NaCl at 19-200C (AC) or 27-280C (ambient) with 80% RH and 75% RH, respectively, showed decrease in ger-mination compared to using saturated KCl at the same storage temperature. At 4 and 6 weeks storage periods at AC or ambient temperature showed declining in viability and vigor. Total loss of viability and vigor occured at 8 and 10 weeks storage. The seeds can be stored at 90% RH (using saturated KCl) and low temperature (AC) for up to 2 weeks; after that period, viability and vigor declined. Key words: storage condition, strorage period, seed viability, and vigor
INDUKSI PEMBENTUKAN KANTONG DAN PERTUMBUHAN DUA SPESIES TANAMAN KANTONG SEMAR (Nepenthes spp.) PADA BERBAGAI KONSENTRASI MEDIA MS SECARA IN VITRO Fitri Yelli
JURNAL AGROTROPIKA Vol 18, No 2 (2013): Agrotropika Vol.18 No.2 2013
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.663 KB) | DOI: 10.23960/ja.v18i2.4297

Abstract

Nepenthes plant is a unique plant due to its interesting pitcher at the leaf tip. The objective of the research was to determine the suitable MS (Murashige and Skoog) medium concentration for growth of two species of nepenthes and induction pitcher formation.  A factorial experiment arranged in completely randomized design was carried out with the first factor was two species of Nepenthes; N. ampullaria and N. mirabilis.  The second factor was several concentrations of MS medium, i.e.  0.500 MS, 0.250 MS, 0.125 MS, 0.0625 MS and 0.000 MS. The results showed that the number of leaves, the number of pitchers were affected by the type of Nepenthes and MS medium while plant height only affected by type of Nephenthes. N. mirabilis had significance higher number of leaf of 13.47 compared to N. mirabilis of 11.10. However, number of pitchers formed was lower in N. mirabilis compared to N.ampullaria.  Data obtained also showed that the best MS medium for pitcher formation was 0.0625 MS medium.  Keywords : Nepenthes ampullaria, Nepenthes mirabilis, pitcher plant, MS medium
RESPON PERTUMBUHAN TUNAS DARI PROTOCORM-LIKE BODIES MENJADI PLANLET ANGGREK DENDROBIUM HIBRIDA IN VITRO TERHADAP DUA JENIS MEDIA DAN PEMBERIAN TRIPTON Zasari, Maera; Ramadiana, Sri; Yusnita, Yusnita; Hapsoro, Dwi
JURNAL AGROTROPIKA Vol 15, No 1 (2010): Agrotropika Vol.15 No.1 2010
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.501 KB)

Abstract

Dendrobium is great interest because of its high value as a floricultural commodity and a kind of elite herbage plant in Indonesia. An efficient in vitro propagation system via protocorm-like body (PLBs) induction has been developed using one-year-old axillary node explants. The potential of different media and supplements triptone for reliable Dendrobium orchid plantlet regeneration from in vitro PLBs explants were studied. In all two media under investigation, shoot regeneration was achieved when the PLBs were transferred onto solidified MS half strenght and Growmore medium with or without 2 g L-1 triptone supplemented with 15% (v/v) coconut water, 20 g L-1 sucrose, and 2 g L-1 charcoal. The shoots development investigation after three month of culture. 1/2 MS and Growmore media significantly influenced the plantlet regeneration of Dendrobium orchid. Among the media, Growmore showed better performance on shoots and leaves per plantlet, but triptone showed no significant effect on number shoots and leaves. The longest shoots were found in Growmore medium without triptone. Key words: Dendrobium, in vitro, PLBs, planlet, triptone.
INDUKSI MUTASI DENGAN IRADIASI SINAR GAMMA DAN SELEKSI IN VITRO UNTUK MENDAPATKAN EMBRIO SOMATIK KACANG TANAH YANG TOLERAN POLIETILENA GLIKOL Hemon, A. Farid
JURNAL AGROTROPIKA Vol 14, No 2 (2009): Agrotropika Vol.14 No.2 2009
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.141 KB)

Abstract

The objectives of this experiment were to evaluate effectiveness of Gamma ray to somatic embryos culture to increase frequency of obtaining polyethylene glycol (PEG) insensitive somatic embryos (SE) of cv. Local Bima peanut. The experiment was inisiated with induction of peanut SE. Mutation induction was done on SE culture. Somatic embryos that have been irradiated with Gamma ray were selected in medium containing polyethylene glykol 15% (PEG 6000). Results of the experiment achieved, namely: 1) Gamma ray dosage affected peanut SE growth. Higher Gamma ray dosage used, it was more inhibited peanut SEs growth. Use of IS Gy dosage gave SEs growth better than up dosage, 2) embriogenic calli irradiated with Gamma ray dosage 15 and 20 Gy showed high SE proliferation, high number of SE per explant, high SE total when selected in medium containing PEG 15%, and lower SE growth occured on SE calli without irrardion and dosage 25 Gy.  Key words: Mutation, Gamma ray
RESPON PERTUMBUHAN DAN HASIL TANAMAN KEDELAI (Glycine max L. Merrill) KULTIVAR ANJASMORO TERHADAP INOKULASI CENDAWAN MIKORIZA VASIKULAR ARBUSKULAR (MVA) DAN PEMBERIAN PUPUK KALIUM Alfandi Alfandi
JURNAL AGROTROPIKA Vol 16, No 1 (2011): Agrotropika Vol.16 No.1 2011
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (277.206 KB) | DOI: 10.23960/ja.v16i1.4260

Abstract

The study aimed to investigate response of inoculating vasicular arbuscular mycorrhizae (VAM) fungi and K fertilizing on Soybean (Glycine max L. Merrill) growth and yield. The study was conducted at Plumbon Research Station during July – September 2009 using Anjasmoro cultivar. The experiment used completely randomized block design with 2 factors and 2 replications. The first factor was dosage of VAM, i.e. 0, 5, 10, and 15 g per planting hole. The second factor was dosage of KCl fertilizer i.e. 0, 30, 60, 90 kg ha-1. The results showed an interaction between the dosage of VAM inoculation and KCl fertilizing on root length and weight of 100 seeds. Inoculating VMA 15 g per planting hole without K fertilizing, and no inoculation of VMA but with high dosage of K fertilizer both gave highest yield of soybean of 1.33 kg per harvested plot equivalent to 1.77 ton ha-1. Key words: VAM, K dosage, soybean, yield.
PERANAN POHON PELINDUNG DALAM MENENTUKAN PRODUKTIVITAS KOPI Rusdi Evizal; Tohari Tohari; Irfan Dwija Prijambada; Jaka Widada
JURNAL AGROTROPIKA Vol 17, No 1 (2012): Agrotropika Vol.17 No.1 2012
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.059 KB) | DOI: 10.23960/ja.v17i1.4276

Abstract

Shade trees of legume in par-ticular have ecological function such as litter fall production, N fixation, nutrient acquisition from deep soil, and shade provision. Shade trees may influence coffee bean yield both increasing and decreasing the yield. To evaluate the role of shade trees in determining coffee yield, the experimental plots were constructed at benchmark site of Conservation and Sustainable Management of Below-Ground Biodiversity (CSM-BGBD), in Sumberjaya Subdistrict, West Lampung, Indonesia. Shade trees of Coffea canephora agro-ecosystems to be examined were Gliricidae sepium, Erythrina sububrams, Michelia champaca, and no shade. The results showed that agro-ecosystem shaded with Gliricidae sepium, Erythrina sububrams, Michelia champaca gave positive return of N, P, K. Total N from litter fall of shade trees and level of shading had quadratic regression with coffee yield. Shading on July significantly determined coffee yield with negative coefficient. Key words: shade tree, coffee yield, litter fall, level of shading
PENGARUH KONSENTRASI KALSIUM TERHADAP PERTUMBUHAN DAN PRODUKSI DUA VARIETAS TANAMAN MELON (Cucumis melo L.) PADA SISTEM HIDROPONIK MEDIA PADAT Dewinta Puspita Sari; Yohannes Cahya Ginting; Darwin Pangaribuan
JURNAL AGROTROPIKA Vol 18, No 1 (2013): Agrotropika Vol.18 No.1 2013
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.921 KB) | DOI: 10.23960/ja.v18i1.4292

Abstract

The experiment aimed to investigate response of two muskmelon varieties on calcium (ca) concentration of hydrophonic solid media. The experiment was arranged in a factorial completely randomized design. Muskmelon varieties of Clara and Ivory were cultured in hydrophonic solid media with calcium concentration of 100 ppm, 150 ppm, 200 ppm, 250 ppm, and 300 ppm. The results showed that the growth and yield of var. ivory was better than those of var. Clara. Plant response on ca concentration between 100-300 ppm showed a linier curve. Every 10 ppm increment of ca enhanced fruit fresh yield of 9.24 g.  Key words: Cucumis melo, hydrophonic, calcium, growth, yield
PENGARUH KOMPOSISI MEDIA PEMBIBITAN DAN DOSIS PUPUK NPK PADA PERTUMBUHAN BIBIT JARAK PAGAR (Jatropha curcas L.) DENGAN PENYAMBUNGAN Sugiatno Sugiatno; Herawati Hamim
JURNAL AGROTROPIKA Vol 14, No 2 (2009): Agrotropika Vol.14 No.2 2009
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.266 KB) | DOI: 10.23960/ja.v14i2.4230

Abstract

The objective of this research are to know the effect of blend of cattle manure, hull of rice, and soil as nursery medium and NPK fertilizer dosage on growth of physic nut seedling by grafting. The experiment has been conducted in Bandar Lampung from January to June 2008. Is a factorial experiment (3X4) with randomized completely block design, the first factors were nursery medium composition consisted of cattle manure, soil, and hull of rice, with volume ratio 3:1:1, 1:1:1, and 1:1:3. The second factors are NPK fertilizer dosage consisted of 0, 1, 3, and 5 g/seedling. The treatments were consisted 3 replication and each experiment unit consisted 10 seedlings. The results show that (1) blend of cattle manure, soil, and hull of rice with ratio 1:1:3 have sucsesful grafting persentage and dry weight of shoot higher than ratio 3:1:1 and 1:1:1, (2) NPK fertilizer dosage until 3 g/seedling unsignificant than control on root stock and entres diameter and dry wight of root and shoot; (3) There is no interaction beetwen seedling medium ratio and NPK fertilizer dosage to growth of physic nut seedling by grafting.Key words: grafting, nursery medium, NPK fertilizer, physic nut
PENGARUH FUNGISIDA METALAKSIL-M TERHADAP KETERJADIAN PENYAKIT BULAI DAN PRODUKSI POPULASI JAGUNG LAGALIGO X TOM THUMB Utomo, Setyo Dwi; Islamika, Nur; Dirmawati, Suskandini Ratih; Ginting, Cipta
JURNAL AGROTROPIKA Vol 15, No 2 (2010): Agrotropika Vol.15 No.2 2010
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.482 KB)

Abstract

The objective of this study was to evaluate the effect of the application of Metalaksil-M on the disease incidence of downy mildew (Peronosclerospora maydis) and the yield of early-maturing corn genotype LL/TT-1. The experiment was arranged in randomized complete block design with three replications. Treatments consisted of Metalaxyll-M (300 ml in 1000 ml water) applied to the seeds (soaked for 1 minute), applied by spraying to the plants 7 days after planting, and the control. The results showed that the genotype LL/TT-1 was not resistant to downy mildew. The dry weight of ear and seeds per 12 plants harvested from plants were 70 and 72% higher than those of control respectively. The dry weight of ear and seeds per 12 plants harvested from plants sprayed with Metalaxil-M were also significantly higher than those of control.Key words: Peronosclerospora maydis, metalaxyl, seed treatment, Zea mays L.

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