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Agrotrop : Journal on Agriculture Science
Published by Universitas Udayana
ISSN : 2088155X     EISSN : 26544008     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal AGROTROP
Arjuna Subject : -
Articles 13 Documents
 1   2 
Search results for , issue "Vol 2 No 1 (2012)" : 13 Documents clear
Aplikasi Pemupukan Berimbang untuk Peningkatan Laju Pertumbuhan Tanaman Gaharu (Gyrinops verstegii) di Kabupaten Tabanan KETUT DHARMA SUSILA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The research that purposed to find out the combination dosage of balanced fertilizing betweenunorganic and organic fertilizers for growth rate increasing of gaharu was conducted at West MundehVillage, West Selemadeg District and Baturiti Village Kerambitan District, Tabanan Regency from August2006 until August 2007. The factorial experiment used was randomized block design consisted of twofactors namely organic fertilizers as the first factor with four levels: 0 kg bokashi/tree; 2.5 kg bokashi/tree; 5.0 Kg bokashi/tree; 7.5 kg bokashi/tree; and unorganic fertilizer (NPK fertilizers) as a secondfactor with four levels: without NPK; 0.10 kg NPK/tree; 0.20 kg NPK/tree, and 0.30 kg NPK/tree.There were 16 treatments with 4 replications. The result showed that no interaction between organicand unorganic fertilizer treatments, however, each factors influenced growth rate increasing of gaharuindividually. Both organic (bokashi) and unorganic fertilizers (NPK) were increasing the stem diametersand hight of plants gaharu. Treatments of 0.30 kg NPK/tree and 7.5 kg bokashi/tree indicated betterperformance significantly for raising stem diameter than the others.
Produksi Benih Cabai Rawit (Capsicum frutescens L.) Bebas TMV(Tobacco mosaic virus) Melalui Dry Heat Treatment I KETUT SIADI; I GUSTI NGURAH RAKA; I GUSTI NGURAH WISNU PURWADI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The study was done in Denpasar, Bali under greenhouse condition as well as in the field. The objective of the research is to know the effectiveness of dry heat treatment to inactivate TMV which was contaminated chili pepper seeds, and to improves the seeds quality. The seeds which were dry heated under 40ºC for 24 hours and hereinafter 70ºC for 72 hours showed to have no different viability with those of non treated seeds. These indicated that dry heat treatment does not affect to germination of chili pepper seeds. The dry heat treated chili pepper seeds (DHS), non treated ones (NT), and manually TMV-contaminated DHS (DHS+TMV) were planted under field condition. Verification of TMV infection in the 90 days old chili pepper plants by enzyme-linked immunoassay revealed that the rate of TMV infection were 57.89%, 12.5% and 100% for NT, DHS and DHS+TMV. These results indicated that the TMV source was abundance in the field. Infection of TMV in the chili pepper plants given much effect on the plant height, branch number and production. These research results suggest a possibility of using dry heat.
Pengaruh Biofer 2000-N dan Pupuk Kascing terhadap Pertumbuhan Bibit Kakao (Theobroma cacao L.) I K. NARTA; D. K. SUANDA; N. L. KARTINI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The Effects of Biofer 2000-N and Casting on Growth of Cacao (Theobroma cacao L.) Seedling. The aims of the research were to obtain Biofer 2000-N and Casting effects on growth of cacao (Theobroma cacao L.) seedling. The design used was Randomized Block Design with three replications. Treatments were allocated in factorial. First factors were four rates of Biofer: 0 g; 10 g, 20 g and 30 g/plastic bag. The second factors were four rates of Casting: 0 g, 15 g, 30 g and 45 g/plastic bag. The results showed that Biofer rate at 30 g/plastic bag, produced the highest total dry weight of seedling (21.03 mg), significantly (20.24%) higher than control (17,49 mg). Biofer at 30 g/plastic bag, increased plant height, stem diameter, stem fresh weight, leaf number, leaf area, leaf fresh weight, fresh weight of plant top, root length, fresh roots weight and total plant fresh weight respectively by 9.02%, 3.58%, 36.02%, 6.00%, 20.50%, 34.45%, 34.94%, 33.31%, 44.44%, and 34.31% than control. Casting rete at 45 g/plastic bag produced the highest dry weight of seedling (20.11 mg), significantly higher (9.89%) than control (18.30 mg).. Casting at 45 g/plastic bag, increased plant height, stem diameter, stem fresh weight, lef number, leaf area, fresh leaf weight, fresh plant top weight, root length, fresh roots weight, total plant fresh weight, respectively by 9.70%, 4.31%, 18.32%, 8.03%, 20.54%, 34.53%, 28.26%, 33.15%, 47.65% and 26.00% than control. Biofer 2000-N, Casting or both could increase cacao seedling growth, so, the seedling to be better and could be planted in the field earlier.
Aplikasi Rizobakteri Pantoea agglomerans untuk Meningkatkan Pertumbuhan dan Hasil Tanaman Jagung (Zea mays, L.) Varietas Hibrida BISI-2 I GUSTI NGURAH RAKA; KHAMDAN KHALIMI; I DEWA NYOMAN NYANA; I KETUT SIADI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

This experiment was conducted in the village of Sibang Gede, District of Abiansemal, BadungRegency on November 2011 until February 2012. The research objective is to enhance the growth andyield of maize hybrid BISI-2 using rhizobacteria Pantoea agglomerans as PGPR in compostformulations. This study used a randomized block design (RBD) single factor with 5 treatments and 5replications. The treatments tested were P. agglomerans BS7a, P. agglomerans BS7b, P. agglomeransBS2a, and P. agglomerans BS5a. All treatments P. agglomerans formulated in the form of compostand given a dose of 50 g/hole. As a control dose of compost 50 g/hole without PGPR. The resultsshowed that the application of rhizobacteria P. agglomerans increased the maximum plant height, netassimilation rate, crop growth rate, chlorophyll content of leaves, fresh weight of roots per plant, ovendried weight of stover per plant, number of seeds per plant, cob length, cob diameter, seed weightmoisture content of 12% per plant and seed yield of 12% water content per hectare.
Pengkayaan Besi (Fe) dan Seng (Zn) dalam Beras dan Karakter Penentu Varietas Padi Sawah Efisien pada Tanah Vertisol dan Inseptisol YUSTISIA YUSTISIA; TOHARI TOHARI; DJA’FAR SHIDDIEQ; SUBOWO G
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Increasing concentration of Fe and Zn micronutrients in rice grain is needed to reduce a wide gap between micronutrients concentration in rice grain and daily recommended consumption, and to antisipate of rice consumption decreased consequence. The Fe and Zn micronutrients in rice grain is influenced by genetic, soil type and management fertilizer factors. The major of rice field and intensively lowland rice production in Indonesia is conducted in Inceptisols and the others is conducted in Vertisols. This research conducted to identify rice genotypes based on their Fe and Zn concentrations in whole brown rice and to identify specific characters of efficient genotypes based on their potentially increasing concentrations of Fe and Zn in whole brown rice. The experiment was conducted in the Greenhouse of Agriculture Faculty, Gadjah Mada University during Dry Season 2008. The experiment was arranged using Randomized Complete Block Design with three replications. Two different soils (Vertisols and Inceptisols) as a first factor, and genotypes (Cimelati, Pandan Wangi, Ciherang, Cisokan, Widas dan IR 64) as a second factor. Fertilizer application in Inceptisols was applied at the rate of 222, 26 kg ha-1 N, 56,80 kg ha-1 P2O5 and 47,67 kg ha-1 K2O. In Vertisols, fertilizer was applied at the rate of 136,38; 52,29 and 43,88 kg ha-1 N, P2O5 and K2O respectively. The result revealed that the concentrations of Fe and Zn in whole brown rice of Widas and Ciherang genotypes in Inceptisols was higher than that it is in Vertisols. The Fe and Zn concentrations in whole brown rice of Widas were 19,8 ppm and 24,43 ppm and Ciherang were 11,40 ppm and 24,55 ppm respectively. The Widas and Ciherang are the efficient genotypes and Cimelati is the inefficient genotype. The efficient genotypes had darker leaves, narrower leaves, lower yield decrease, higher grain yield efficiency index, compared to the inefficient genotypes. The maximal yield decreased for selecting efficient rice genotypes with NPK fertilizer at the 222, 26 kg ha-1 N, 56,80 kg ha-1 P2O5 and 47,67 kg ha-1 K2O compared to the without NPK fertilizer obtained of arround 41,49%.
Cardinal Temperatures of Brassica sp. and How to Determine It D. K. SUANDA SUANDA
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Cardinal temperatures consist of minimum, optimum and maximum of plant growth, and might beable to be determined by assessing effect of temperature on seed germination. An experiment ofseed germination was conducted in laboratory, using thermal gradient plate for ten days. To test hypothesisthat rapeseed genotypes vary in their response to temperatures. The design of this experiment was asplit plot with four replications. The main-treatments were 14 different temperatures: 0.4°C, 3.3°C,7.8°C, 11.6°C, 13.3°C, 15.0°C, 16.8°C, 18.3°C, 20.9°C, 21.1°C, 25.6°C, 29.0°C, 33.0°C and36.3°C. Sub-treatments were 6 brassica genotypes: Brassica napus genotypes (Tatyoon and Marnoo);B. campestris (Jumbuck and Chinoli B); B. juncea (No. 81797 and Zero Erusic Mustard (ZEM) 2).Each treatment was using 50 seeds. Germinations were observed daily for ten days and data wereanalyzed with regression and correlation. Genotypes responded differently to temperatures with Jumbuckthe most sensitive to low temperature with minimum temperature (7.90°C), then respectively followedby Chinoli B (6.36°C), ZEM 2 (4.77°C), Tatyoon (4.63°C), No. 81797 (2.59°C), and Marnoo(1.00°C). For high temperature the most sensitive was No. 81797 with maximum temperature 38.61°C.and then respectively followed by Marnoo (39.76°C), Chinoli B (42.93°C), Tatyoon (43.79°C),Jumbuck (44.58°C) and ZEM 2 (45.88°C). Optimum temperatures were for Jumbuck was 24.56°C,ZEM 2 (26.95°C), Tatyoon (27.12°C), No. 81797 (28.12°C), Chinoli B (29.74°C) and Marnoo(30.48°C).
Respon Sporofit Paku Ata (Lygodium circinnatum (Burn. F) Swartz) terhadap Pemberian Pupuk Urea RINDANG DWIYANI; HESTIN YUSWANTI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Lygodium circinnatum (Burn.f.) Swartz is a wild Pteridophyta which is used as a material for handicraft. Recently, Lygodium has been rare in nature due to overgathering. Domestication of this wild plant may required to overcome this problem. A research concerning domestication of Lygodium was conducted at Faculty of Agriculture of Udayana University during March to October 2009. Dose of urea fertilizer in varied levels was applied to 8 month-old sphorophyte. The level of urea doses were 0, 100, 200, 300 and 400 mg urea per plant. The results showed that urea fertilizer significantly stimulated the number of “sulur” (“sulur” is an organ of Lygodium that used as material for handicraft) , but did not affect the number of leaves and plant height. Dose of 300mg urea per plant resulted in the highest number of the average of “sulur” number per plant.
Tanggapan Tanaman Kedelai terhadap Inokulasi Rhizobium OKTI PURWANINGSIH; DIDIK INDRADEWA; SITI KABIRUN; DJAFFAR SHIDDIQ
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Nitrogen is one important element in plant growth. In soybean crop nitrogen requirement can bemet from the fixation of nitrogen which is the result of symbiosis between rhizobium bacteria withsoybean. A study on the relationship between soybean cultivar and rhizobium inoculation was conductedin Banguntapan Bantul Yogyakarta on regusol soils. Research aimed the responses of soybean cultivarof rhizobium inoculation. This research is a pot experiment that tested the response of 16 soybeancultivars of rhizobium inoculation. The sixteen cultivars consisted of 12 superior cultivars and 4 localcultivars. Before planting soybean seeds were inoculated with legin. Land used first sterilized usingautoclaves. Determination of soybean cultivars into four categories based on agronomic charactersnodule number, nodule dry weight, canopy N content, nitrogenase activity and grain yield components(seed dry weight). The study demonstrated that (1) Cultivars Anjasmara, Sibayak, Surya, Gepak yellow,Galunggung, Argomulyo and Baluran provide a response to rhizobium inoculation in the form of increasednitrogen fixation and grain yield (2) rhizobium inoculation on Tanggamus cultivars can increase nitrogenfixation but not followed by an increase in grain yield (3) rhizobium inoculation in cultivar Malabar,Seulawah and Petek not increase nitrogen fixation but can increase grain yield (4) rhizobium inoculationin cultivar Ijen, Sinabung, Wilis, Grobogan, and Garut not increase nitrogen fixation and grain yield.
Hubungan Antara Keragaman Gulma dengan Penyakit Bulai pada Jagung (Zea mays L.) Stadium Pertumbuhan Vegetatif I MADE SUDARMA; I KETUT SUADA; KETUT AYU YULIADHI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Weeds play an important role in the spread of downy mildew disease, competition, and lower cropyields of corn. Research using the survey method in 3 locations of Sanur village, Denpasar City. Eachlocation is taken 5 samples, and each sample area was 1m2, which was arranged diagonally. Forweeds identification was using reference i.e. Weeds of rice in Indonesia, and identification of downymildew disease using reference i.e. Maize Disease: A Guide for Field Indentification and microscopically,while the weeds diversity was determined based on Diversity Index of Shannon-Wiener. Relationshipbetween number of weed species and weed populations, and disease incidence were determined byregression and correlation analysis. Weed diversity on ecosystem of maize in vegetative stage is verylow with the diversity index of 0.779, this means weed ecosystem unstable, and dominated by a particularweed species was Paspalum commersonii Lamk. (Fam. Poaceae/Graminaceae) of 23.3%, with thedominance index of 0.709. Relationship between the number of weed species and disease incidence ofthe downy mildew disease was highly significant (P<0,01), while the relationship between weed populationand disease incidence of the downy mildew disease is not significant. Plant height and leaf number ofmaize was influenced by the type of weed, but weed populations only affect plant height of maize invegetative stage (V3-V11).
Pengaruh Pupuk NPK Tunggal, Majemuk, dan Pupuk Daun terhadap Peningkatan Produksi Padi Gogo Varietas Situ Patenggang SUNJAYA PUTRA
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Increasing rice yield for fulfill food can be done through utilization dryland for planted new varieties upland rice and granting fertilizer appropriate. The study aims to determine the effect of NPK singular, compound and fertilizers leaf to increased upland rice yield of Situ Patenggang varieties. The experiment was conducted at dryland in Nagrak Utara village, Sukabumi District in West Java on January to April 2008. Materials research are used upland rice Situ Patenggang varieties, NPK Phonska (15-15-15), Urea, SP 36, KCl and fertilizers leaf. The experiment uses Randomized Block Design of six treatments and four replications. Treatments consisted of; 1) NPK 250 kgha-1, 2) NPK 200 kgha-1+ Urea 100 kgha-1, 3) NPK 200 kgha-1 + Urea 50 kgha-1+ Fertilisers leaf 3 lha-1, 4) NPK 200 kgha-1+ Urea 100 kgha-1+ Fertilisers leaf 2 lha-1, 5) NPK 200 kgha-1+ Fertilisers leaf 3 lha-1, 6) Urea 200 kgha-1+ SP 36 100 kgha-1+ KCl 50th kgha-1. The resulth of experience conclused that fertilizing treatment with NPK 200 kgha-1+ Urea 50 kgha-1+ Fertilisers leaf 2 lha-1 represents dosing appropriate and can increase upland rice yield of Situ Patenggang varieties until 3.4 tonsha-1 or increased counted 58% compared treatment using single fertilizers only (Urea 200 kgha-1+ SP 36 100 kgha-1+ KCl 50 kgha-1).

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