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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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POLA PEWARISAN KARAKTER KUALITATIF KACANG PANJANG (VIGNA SINENSIS VAR. SESQUIPEDALIS L.) KETURUNAN TESTA COKLAT X HITAM Sriwidarti, Sriwidarti; Sa?diyah, Nyimas; Utomo, Setyo Dwi; Barmawi, Maimun
JURNAL AGROTROPIKA Vol 15, No 1 (2010): Agrotropika Vol.15 No.1 2010
Publisher : JURNAL AGROTROPIKA

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Abstract

Experiments were conducted at farm area Gedung Pakuon village?s Kecamatan Baradatu Kabupaten Way Kanan ? Lampung and the Laboratory of Seed of Lampung University, on April 2009 to Januari 2010. In the first experiment used P1 (brown/C), P2 (black), dan F1 (C x H), to have seed for planted on the second experiment. In the second experiment the population of P1 (coklat), P2 (hitam), F1 (C x H), F1 resiprok (H x C), BC1 (F1 x C), BC2(F1 x H), dan F2. Were tested to estimasi number of controlling gen, gene action, and maternall effect. The character were observed i.e. the colour of seed skin and the colour of pods.  The result showed that F2 population in the colour of pods were not normal distribution, and base on estimated number of gen this character was controlled by 2 genes with inheritance controlled by a simple gen. Inheritance pattern of the colour of seed skin have complex equivalent, and segregation in F2 population. The colour of pods with mendelian ratio of 12:3:1 (dark green : green : bright green). Result of experiment to maternal effect indicated that there was maternal effect in the the colour of seed skin, but not in the colour of pods.Key Words: yardlong bean, maternall effect, heritability
PENGARUH ZAT PENGATUR TUMBUH TERHADAP PERKECAMBAHAN BENIH DAN PERTUMBUHAN BIBIT KAMANDRAH (CROTON TIGLIUM L.) Tjokrowardojo, Agus Sudiman; Rosman, Rosihan; Iswantini, Dyah
JURNAL AGROTROPIKA Vol 14, No 2 (2009): Agrotropika Vol.14 No.2 2009
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Abstract

Study of growth regulator of kamandrah (Croton tiglium L.) by pot experiment was conducted in green house at Indonesian of Medicinal and Aromatic Crops Research Institute (IMACRI) Bogor. The experiment was conducted from Juni to Oktober 2008. In pot experiment to test the germination by treatments: a) Nitroaromatic at 0.5 ppm concentration, b) Nitroaromatic at 1.0 ppm concentration, c) Auxin + Cytokinine at 2.5 ppm concentration, d) Auxin + Cytokinine at 2.75 ppm concentration, e) Root Up at 0.5 ppm concentration, f) Root Up at 0.75 ppm concentration and g) control (without treatment). The assasment on 30 days after sowing (DAS), showed that treatments by Nitroaromatic at 0.5 dan 1.0 ppm, Auksin+ Citokinine at 2.5 dan 2.75 ppm were improved seed germination of kamandrah from 26.67% (by control) to 40.00 - 46.67 %. Nitroaromatic, Auxin + Cytokinine and IBA + NAA to improve seeds germination of kamandrah about 24 ? 74 % than control in 30 DAS. Seedlings growth of kamandrah by Nitroaromatic at 0.5 and 1.0 ppm, Auxine + Cytokinine at 2.5 and 2.75 ppm, IBA + NAA at 0.5 and 1.0 ppm were 11.15 ? 16.40 cm more higher than control (8.85cm). The number of branch treatments by Auxin + Cytokinine at 0.5 ppm (21.35/crop), Nitroaromatic at 0.5 and 1.0 ppm (19.35 and 17.15/crop), IBA + NAA at 0.5 ppm (17.15/crop) and Auxine at 2.75 ppm (16.75/crop) more than control significantly (14.45/crop). The assasment on 60 DAS showed that seedlings growth of kamandrah improved by plant growth regulators ie. Nitroaromatic, Auxin + Cytokinine and IBA + NAA.Key words: Plant growth regulator, seed germination, seedling, kamandrah (Croton tiglium L.).
PENGARUH KONSENTRASI DAN LAMA PERENDAMAN KINETIN PADA PERBANYAKAN TUNAS DAN UMBI BIBIT GLADIOL (GLADIOLUS HYBRIDUS L.) Sofiati, Vivi; Andalasari, Tri Dewi; Yusnita, Yusnita
JURNAL AGROTROPIKA Vol 15, No 2 (2010): Agrotropika Vol.15 No.2 2010
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Abstract

The increasing number of Gladiol Flower demand every year in Indonesia is not comparable with the low productivity of Gladiol Edible root. The technique of growing stimulation by using growth controller essence becomes one alternative to increase the number of sprout and edible root of Gladiol. This research is being purposeful to know the concentrate, the long term of submersion, and the combination between the concentrate and the best long term kinetin submersion which could increase the number of sprout and edible root of Gladiol (Gladiolus hybridus L.). The treatment is done by factorial (3 x 2) in Perfect Disordered Group Arrangement with four times repetition. The first factor is kinetin concentrate, those are 30, 40, and 50 ppm, the second factor is the long term of kinetin submersion, and those are 24 and 48 hours. The result of the research shows that there is no real influence between the treatments of concentrate and the long term kinetin submersion. The percentage of germinated edible root, the number of edible root, the height of the plants, the number of leaves, the number of beet, the weight of beet, the diameter of beet, the number of beet offspring, the weight of the offspring, and the dry weight of one root of beets.Key words: kinetin, multiplication, Gladiolus
SEED-DIPPING APPLICATION OF LOCAL ENDOPHYTIC BACTERIAL CONSORTIUM AGAINST BACTERIAL LEAF BLIGHT OF RICE Suryadi, Y.; Susilowati, D. N.; Kadir, T. S.; Ruskandar, A.
JURNAL AGROTROPIKA Vol 17, No 1 (2012): Agrotropika Vol.17 No.1 2012
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Abstract

Bacterial leaf blight of rice caused by Xanthomonas oryzae pv. oryzae is one of the most important diseases of rice, and to date no effective control measure yet. Alternative controls by several antagonistic microbes have been used to suppress bacterial infection. The aim of this re-search was to investigate antimicrobial effect of bacterial consortium as the primary step to control bacterial blight of rice. A total of five endophytic bacterial consortiums as biocontrol agents were developed and further evaluated for their capability in reducing bacterial blight of rice under screen house condition. The bacterial consortium was applied by seed dipping method using bacterial suspension prior to transplanting. The result showed that bacterial consortia were able to inhibit bacterial blight disease development both in vitro and in vivo test. Consortium labeled as C 1 (containing isolates *E 64,*E 65,*E 66, *C 1A, *C 29D) and C 2 (con-taining isolates *E 64,*E 65,*E 76, *C 1A, *CPKKP 3.5) showed higher bacterial blight percent reduction by two seed-dipping treatments of 24 h and 48 h incubation time, whilst C 4 and C 5 only effective by seed-dipping of 72 h incubation; however none of these consortium affected plant height as well as yield. It was indicated that C 1 and C 2 consortium have relatively high antagonistic activity than that of control treatment and could be applied further to reduce bacterial blight disease development on rice. Key words: Xanthomonas oryzae pv. oryzae, endophytic, rice, bacterial consortium, seed-dipping application
PENGARUH SISTEM OLAH TANAH DAN PEMBERIAN MULSA BAGAS TERHADAP POPULASI FUNGI MIKORIZA ARBUSKULA PADA PERKEBUNAN TEBU Listyowati, Mastutik Sri; Yusnaini, Sri; Rini, Maria Viva; Arif, M. A. Syamsul
JURNAL AGROTROPIKA Vol 18, No 1 (2013): Agrotropika Vol.18 No.1 2013
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Abstract

Intensive soil tillage in sugarcane plantation may cause soil degradation including soil microorganism activities. The experiment was conducted at PT GMP to test the effect of soil tillage systems and bagasse application on arbuscular mycorrhiza fungi (AMF) population. The experimental design used was a completely randomized design arranged in a split plot with five replications. The main plot consisted of intensive soil tillage and no tillage system. The sub-plot consisted of 80 ton ha-1 bagasse application, and without bagasse application. The result showed that AMF population in intensive soil tillage was not signicantly different over no tillage system. AMF population in the soil applied with 80 t ha-1 bagasse was also not signicantly different over no bagasse. There was no interaction between soil tillage systems and bagasse application on arbuscular mycorrhiza fungi (AMF) population.  Key words: arbuscular mycorrhiza, population, sugarcane, soil tillage, bagasse
PENGGUNAAN AIR KELAPA DAN ASPIRIN UNTUK PRESERVASI UBI JALAR (IPOMEA BATATAS) SECARA IN VITRO Yelli, Fitri
JURNAL AGROTROPIKA Vol 19, No 1 (2020): Jurnal Agrotropika Vol 19 No 1, Mei 2020
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Abstract

Sweet potato is raw locally food used as an alternative staple food that important for national food security.   The objective of the reseach was to achive the suitable medium for preservation  of  sweet potato plants by slowly growth in in vitro medium.   The factorial experiment arranged in completely randomized design with the first factor was two concentrations of MS medium: MS 1 and MS 2.   The second factor was several concentrations of coconut water, i.e.  0 and 15 mg/l and the third factor was several concentrations of Aspirin (0, 5, 10, 15, 20 mg/l) . The results showed that the number of green leaves and the number of internodes were affected by concentrations of medium in six weeks after planting. The MS1 medium with 0 mg/l Aspirin and 15 mg/ coconut water could produced the higher number of green leaves (8,0) and 8,5 internodes number.  The MS2 + 15 mg/l coconut  water and 15 mg/l Aspirin was the best medium for sweet potato preservation.   Data obtained also showed that all medium containing Aspirin  produced  the high number of root.  Keywords : Sweet potato, coconut water, Aspirin, preservation, in vitro.
PENGARUH TINGKAT KERACUNAN ALUMUNIUM TERHADAP PERUBAHAN GULA YANG DIEKSUDASI OLEH PERAKARAN KEDELAI (GLYCINE MAX [L.] MERR.) Timotiwu, Paul Benyamin
JURNAL AGROTROPIKA Vol 15, No 1 (2010): Agrotropika Vol.15 No.1 2010
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Abstract

Around 7 ? 30 % of photosynthate produced by plants was exuded through the plant roots. Compounds exuded were in forms of polysaccharides, polypeptides, enzymes, and several secondary metabolic compounds. The presence of aluminum may cause an obstruction on seedling growth and establishment and significantly relate with sugars excreted by the plant roots. The mechanisms of sugars excretion by the plants was one among several means of the plants to overcome environmental toxicity. This research intended to (1) find out kind of sugars exuded by the soybean roots when underwent an aluminum toxicity; and (2) understand the effects of the increase of aluminum concentration on sugars exuded by the soybean roots. The research utilized a technique of aeroponic mist system. The treatments were arranged in a 3X2 factorial; the first factor was the aluminum concentration consisted of 0, 0.5, and 1 mM AlCl3. The second factor was the soybean varieties which were Slamet variety recommended resistant to Al and Burangrang variety susceptible to Al. The treatment combinations were applied in a split plot ? randomized complete-block design. To understand the effects of the increase in Al concentration and the differences of kind of sugars on the varieties, standard error of mean (SEM) statistics were used. The results of this research indicated that sugars exuded from the roots of Slamet and Burangrang soybeans which experienced Al toxicity were glcose (Glc) and galactose (Gal). Total exuded Glc from Slamet variety was 639.23 µg, whereas Burangrang variety was 899.41 µg. Total exuded Gal from Slamet variety was 404.78 µg whereas Burangrang variety was 489.85 µg. The pattern of sugar exudation was different between Slamet and Burangrang with the increase of Al concentration. The Slamet variety confirmed more tolerant than the Burangrang variety since the Slamet variety increased the exudation of Glc and Gal in response to the increased of Al concentration. This phenomenon was strengthened by the parameter responses of a lower decrease on root fresh and dry weights, and a lower percentage of killed plants.  Key words: aerophonic mist system, aluminum, glucose, galactose, soybean
EFEKTIVITAS FORMULASI BIOHERBISIDA EKSTRAK BUAH LERAK DENGAN PENAMBAHAN ADJUVAN TERHADAP PERKECAMBAHAN GULMA Ludwigia octovalvis Pujisiswanto, Hidayat; Sunyoto, Sunyoto; Sriyani, Nanik; Pratiwi, Melinda Tri
JURNAL AGROTROPIKA Vol 19, No 2 (2020): JURNAL AGROTROPIKA VOL.19 NO. 2, Oktober 2020
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v19i2.4546

Abstract

The abundance of weeds in cultivated land can directly inhibit competition of plants growth. Weed control using bioherbicides is one of eco-friendly alternative. This research aims to determine the bioherbicide formulation of lerak fruit extract with the addition of adjuvants which can inhibit the germination of Ludwigia octovalvis. The research was conducted at the Weed Laboratory of the Faculty of Agriculture, University of Lampung in December 2019 - March 2020. The researcher used Complete Randomized Design (CRD) with four replications.  The research treatments consisted of lerak fruit extract + KAO adjuvant, lerak fruit extract + VCO, lerak fruit extract + Tween, pure lerak fruit extract, and control (aquades). The results showed that the application of 50% (500 g / l) lerak fruit extract with the addition of VCO, KAO, and Tween adjuvants at a concentration of 2% (20 ml/l) was able to inhibit weed germination Ludwigia octovalvis by 95%-100%. The application of lerak fruit extract with the addition of a 2% concentration of VCO adjuvant was the most effective in inhibiting weed germination Ludwigia octovalvis. Keywords : adjuvants, Bioherbicide, Sapindus rarak, Ludwigia octovalvis, weed
Pengaruh Konsentrasi Benziladenin (BA) pada Pertumbuhan Spatifilum (Spathyphyllum wallisii) Rugayah, Rugayah; Nurrahmawati, Nurrahmawati; Hendarto, Kus; Ermawati, .
JURNAL AGROTROPIKA Vol 20, No 1 (2021): Jurnal Agrotropika Vol 20 No 1, Mei 2021
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v20i1.4735

Abstract

Spatifilum (Spathiphyllum wallisii) is a popular ornamental plant that can be used as indoor decoration, so its appearance should be attractive.  Apart from flowering, an interesting criteria for the appearance of the spatula is to have many tillers so that it looks lush.  One of the efforts to obtain this appearance is the provision of a growth regulator capable of accelerating shoot growth, namely Benzyladenine (BA).  The purpose of this study was to determine the concentration of BA which produced the best effect on spatifylum growth.  This research was conducted in the greenhouse of the Horticulture Building, Faculty of Agriculture, University of Lampung from July 2019 to January 2020.  This research was arranged in a structured single factor treatment design consisting of six BA concentration treatments, namely 0 ppm, 10 ppm, 20 ppm, 30 ppm, 40 ppm, and 50 ppm with six repetitions.  Data analysis used standard deviation which is presented in the form of a histogram by taking the average value of each treatment.  The results showed that the administration of benzyladenine with concentrations 10-50 ppm tended to increase spatifylum growth in the variable leaf area, leaf greenness, tiller emergence, number of tillers, flower emergence time, and number of flowers, but had no effect on the addition of plant height and number of leaves.  Giving benzyladenine with a concentration of 20 ppm was quite efficient in optimizing the vegetatif growth of spatilum, which was shown by the increase in plant height, increased number of leaves, time to emergence of tillers, and number of tillers.  On the other hand, the effect of benziladenine on the generative phase requires a higher concentration, namely at a concentration of 50 ppm, the time for which the flower buds appear is the fastest and the number of flowers is the most.  Keywords:  Benzyladenine, Concentration, and Spatifillum.
PENGARUH FORMULASI BIOCHAR DAN LIMBAH KULIT KOPI TERHADAP PERTUMBUHAN BIBIT KOPI Fitri Yelli; Hanisah Hanisah; Rusdi Evizal; Sugiatno Sugiatno
JURNAL AGROTROPIKA Vol 19, No 2 (2020): JURNAL AGROTROPIKA VOL.19 NO. 2, Oktober 2020
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v19i2.4544

Abstract

Coffee husk is the main waste of coffee bean production using a dry processing system. Coffee husk is returned to the coffee plantation as mulch, or used as a mixture for nursery media and for making bio-charcoal. This study aims to determine the effect of the formulation of biochar, coffee husk, and soil on the growth of Arabica coffee seedlings. The experiment used a randomized block design (RBD) consisting of 6 treatments with 4 replications. The treatments were the composition of the ratio of biochar: coffee husk: soil (v / v / v), namely: 0: 1: 2 (control, without biochar), 1: 1: 2, 1: 0: 2 (without coffee skin), 2: 1: 2, 1: 2: 2, and 1: 1: 1. The coffee husk biochar is made by a slow burning system in a stack. The results showed that: (1) The treatment of biochar composition, coffee husk and soil had an effect on the number of leaves, length x leaf width, crown dry weight, fresh weight quality index, and dry weight quality index; (2) biochar mixing treatment did not increase seedling growth. Mixing biochar with a composition of 1: 1: 2 reduces root growth; (3) the composition of biochar, coffee husk and soil 1: 1: 2 gave better seedling growth than the composition 0: 1: 2 (control without biochar) based on the quality index of fresh seedling and dry seedling.Keywords: Arabica, biochar, coffee husk, growth, seedling, quality indeces

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