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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 1 No 2 (2011)" : 13 Documents clear
POTENSI PSEUDOMONAS AERUGINOSA SEBAGAI AGENS BIOKONTROL TERHADAP SCLEROTIUM ROLFSII SACC. DAN BIOSTIMULAN PADA TANAMAN KEDELAI KHAMDAN KHALIMI; I GUSTI NGURAH RAKA; I KETUT SIADI
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Potential of Pseudomonas aeruginosa as Biological Control Agents against Sclerotium rolfsii Sacc. and Biological Stimulants on Soybean Plant. The objectives of this experiment were conducted to evaluate the effectiveness ofP. aeruginosa as an agent of biological control and biological stimulants. P. aeruginosawere tested for antagonistic activity against Sclerotium rolfsii Sacc. The test for antagonistic activity by bacteria was done through side by side culture. Soybean seeds that will be used in the rhizobacteria treatment were soaked in rhizobacteria suspension for 15 minutes. For wihout the treatment, seeds soaked with sterile water instead of rhizobacteria suspension. Results of this experiment,P. aeruginosa showed strong inhibitory activity againstS. rolfsii Sacc. on PDA medium. Percentage of inhibitory activity was 94,4%. Application of P. aeruginosa significantly increased the plant growth. The maximum plant hight, the maximum number of leaves, fresh and dry weights of root, fresh and dry weights of shoot, and chlorophyll content on treated plants significantly higher than those of un-treated control plants according to the Duncan’s multiple range test (P<0.05%). These results suggested that application of rhizobacteria could promote the plant growth and increase the yield.
KAJIAN PENGGUNAAN PUPUK MIKRO CU TERHADAP PRODUKSI DAN PENDAPATAN USAHATANI KENTANG DI KECAMATAN LEMBANG, BANDUNG AGUS NURAWAN
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Study on Effect of Cu Fertilizer against Production and Income of Potato Agribussines in Lembang Bandung. The study of the effect of Cu micro fertilizer on potatoes plant was conducted at Cikahuripan Village, Manoko with the altitude of 1,200 meters above sea level in Lembang West Java. Method used in this experiment was Randomized Blok Design (RBD) with 5 level dosages of Cu/plant i.e. 1) 0 ppm Cu (Control), 2) 3 ppm Cu/plant, 3) 20 ppm Cu/plant, 4) 30 ppm Cu/plant, and 5) 50 ppm Cu/ plant, all with 8 replication. The Cu fertilizer used in this experiment were: CuS04.4H2O with 23% concentration in form of solution. Two variables observed in this experiment were: tuber diameter, fresh condition, and Revenue and Cost Ratio (R/C ratio) analysis. The objective of the study was: to observe the effect of Cu micro fertilizer on the growth and the productivity, along with the revenue and the benefit and cost ratio. The results showed that, with the dosage 3 ppm Cu/plant, shows a positive effect of productivity, and the dosage 20 ppm Cu/plant yields optimum productivity i.e. 429.75 g/plant. The dosage greater than 20 ppm showed decreasing in productivity e.g. with 50 ppm Cu/plant caused physiological and metabolism disorder to the plant. From the labor cost and Revenue Analysis we noted the following result: 1) with the treatment of 20 ppm (C treatment) the revenue in Rp73,670,400 and R/C ratio of 1.82, 2) with the treatment of 3 ppm Cu/plant yield Rp 71,013,600 with R/C ratio of 1.82. 3) with the treatment of 40 ppm/plant yield Rp 63,874,800 with the R/C of 1.52. 4) with the treatment of 0 ppm (Control) the revenue yield Rp 57,812,400 with the R/C ratio of 1.52.
PENGEMBANGAN KRITERIA DAN KLASIFIKASI TINGKAT DEGRADASI LAHAN PADA LAHAN KERING (STUDI KASUS: LAHAN KERING DI KABUPATEN BOGOR) BAMBANG SUSANTO
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Developing of Criteria and Classification of Land Degradation Level on Dryland (Case Study: Dryland in Bogor Regency. Optimization of dry land utilization including in Bogor Regency is still an important issue. One of the causes is due to land degradation. At the moment, land degradation inventory is still resulting tentative acreages, since the criterion was different among institutions. This research aims to develop criterion (classes range) and to classify land degradation in dry land on reconaissance scale. It based on variabels affecting level of degradation. Data was collected on surveys for a case study. The data then was analyzed using some techniques, for instances cluster analysis, and discriminant analysis. This research was resulting three criterions (range of classes) for five variables determining level of land degradation, there were type of bed-rock, slope, conservation (P-value), silt percentage, land use/ vegetation, Pavailable, exchange Al, and H. This research also generated three levels of degradation for reconnaissance scale, there were (1) sligtly degraded land (score <16), (2) moderately degraded land (score in between 16-39), and (3) strongly degraded land (score more than 39).
KERAGAMAN KARAKTER MORFOLOGI PLASMA NUTFAH GANYONG (CANNA EDULIS KERR.) TINTIN SUHARTINI; HADIATMI -
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Morphological Characters Diversity of Canna (Canna edulis kerr.) Germplasm. Edible canna (Canna edulis) is the source of potentially of foodstuf. Edible canna have high carbohydrate and nutritions. The starch of edible canna could be exploited as a food materials and industry. Evaluation and characterization were needed to get informations good characters of edible canna for genetic variability to get improved edible canna varieties. Indonesian Center of Agricultural Biotechnology and Genetic Resources and Development ( BB-Biogen) germplasm have two groups edible canna collection , they are red edible canna and white edible canna. The result showed the morphology characters of 27 edible canna accecions were not different on qualitative characters. Such as of 23 white edible canna have not different on qualitative characters. The red edible canna have red color on part of shoot, while in white edible canna have green color. The tuber of red edible canna have pink color and white color of white edible canna. The different are in the flower of white edible canna, there are 17 accecions have yellow color and 6 accecions have orange color. The quantitative characters of flowering, leaf length, leaf width, total leaf and leaf stalk length have low variability(cv <10 %). The character of plant hight, number of tiller per hill and tuber weight per hill have high coeficient variability with range of 14%-21%.
DORMANCY BREAKING OF OIL PALM SEED TENERA VARIETY BY SOAKING FOR A CERTAIN LENGTH OF TIME IN THE SULFURIC ACID SOLUTION WAYAN SUENA
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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The experiment aimed to know the effect of length of soaked time in sulfuric acid (H2SO4) solution to the dormancy breaking upon the oil palm seeds. The experiment show that soaking seeds for 12 and 10 minutes in the acid solution resulted dormancy breaking were reached after 61.3 days, while soaking seed for 2 minutes in the same solution breaking of dormancy was reached after 73.5 days. By soaked oil palm seeds in sulfuric acid solution gave highest germination percentage (80%), peak value of germination was 0.77%/day, by an average of 0.73%/day. So that, by soaked oil palm seed in sulfuric acid solution for 12 minutes was able to increase vigor, viability, rate of germination and growth uniformity.
STUDI PERUBAHAN SIFAT FISIK TANAH DAN HASIL JAGUNG MANIS (ZEA MAYS SACCHARATA STURT) PADA INCEPTISOL YANG DIBERIKAN KASCING NI MADE TRIGUNASIH; TATIEK KUSMAWATI
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Study of Casting Fertilizers on Physical Properties Change of Soil and Yield of Sweet Corn on Inceptisol. A field experiment was conducted to study the effect of casting fertilizes on soil physical characteristics and yield of sweet corn (Zea mays saccharata Sturt) on Inceptisol. The Experiment was arranged in Randomized Block Design (RBD) with three replications and eight treatments. The treatments were consisted of : O0 = control (without casting); O1 = 2.5 ton/ha; O2 = 5 ton/ha; O3 = 7.5 ton/ha; O4 = 10 ton/ha; O5 = 12.5 ton/ha; O6 = 15 ton/ha; O7= 17.5 ton/ha. The results indicated that casting fertilizer was highly significant affected on soil conductivity and soil aggregates, but was not significant to soil porosity, and fresh corn cob weight of the yield. The casting fertilizer rate of 15 to ha- 1 gave the highest yield of 13.69 ton ha-1 or increasing of 60.12% compared to without casting fertilizer (8.55 ton ha-1). The treatment casting of 15 ton ha-1 could increase soil conductivity of 480.87% (20.97 cm/hours compared with control (3.61 cm/hours) and the soil aggregate could increase of 150.16% (3.53 ml) compared to control (1.26 ml).
PENGARUH KONSENTRASI KALIUM NITRAT PADA MEDIA VERMIKOMPOS TERHADAP KANDUNGAN HARA DAN TRUBUS SELADA (LACTUCA SATIVA L.) H. J. NAMSERNA
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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The Effect of Potassium Nitrate Concentration in Vermicompost Medium on Nutrients Content and Shoot of Lettuce (Lactuca sativa L.) The content of nitrogen and potassium in vermicompost generally low, i.e. less than two percent, so that still require the addition of another source to meet crop requirement. Potassium nitrate to form the ions K+ and NO3 6 after disolved in water so as to be readily available to plants. The study aims to determine the effect of the addition of potassium nitrate in the growth medium made from vermicompost to increase growth lettuce plant and know the critical level of concentration or nutrient solution electrical conductivity with the addition of potassium nitrate to the lettuce plant. Research conducted in the form of pot experiment. Experiment using Randomized Complete Block Design (RCBD) with three replications. The treatment consists of 12 levels of concentration or nutrient solution electrical conductivity with the addition of potassium nitrate. The results of experiment indicated that addition of KNO3 highly significant effect on the increasing in fresh and dry weight of shoot per plant. Fresh and dry weight of shoot per plant were significantly increased in a quadratic with increasing concentrations of KNO3. The concentration of KNO3 are optimum for growth of plant shoot weight was at 12.23 g in 100l of water or electrical conductivity equivalent to 2.01 dS.m-1. The concentrations of P and K in plant shoot tissue were significantly increased linearly with the provision of KNO3. The concentration N, Ca, Mg, S, Na, Fe, Mn, Cu, Zn, Al and B in shoot tissue of plants is not affected KNO3.
KAJIAN BEBERAPA MEDIUM PENYERAP KMNO4 DAN SUHU TERHADAP PENYAKIT ANTRAKNOSA PADA PISANG KULTIVAR SUSU LEPAS PANEN KEMASAN PLASTIK POLIETILEN RONY AL AFGANI; LOEKAS SOESANTO; DARINI SRI UTAMI
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Study of Several KMnO4 Absorbant Media and Temperature on Antracnose of Postharvest Susu Cultivar Banana Packaged in Polyethylene Plastic. A research was aimed to know the best KMnO4 absorbant media, temperature, and their combination on antracnose of postharvest susu cultivar banana packaged in polyethylene plastic was carried out at the Laboratory of Plant Disease, Faculty of Agriculture, Jenderal Soedirman University, Purwokerto. The banana with age of 3.5 months after flowering was taken from Sokawera Village, Somagede District, Banyumas Regency, Central Java. Split-Plot Design was used with the plastic. The main plot was room (25-28oC) and low (15-17oC) temperatures. The sub plot was without media and with or without inoculation, media of charcoal, coal, brick, cotton, and rockwool. Variable observed was incubation period, attact area, attact intensity, waste index, softy rate, and sugar content. Result of the research showed that the best media for absorbing KMnO4 was cotton. Low temperature could decrease softy rate of 64.75% and attact area of 92.78% compared to room one. Combination between cotton or rockwool and without inoculation at low temperature was the best treatment because of decreasing attact area ofColletotrichum musae and waste index for 100%. Inoculation of the fungus was not affect fungus attact in the KMnO4 and its combination with temperature. All treatments were not affect colour, aroma, and taste of the banana.
KAJIAN POTENSI PENGEMBANGAN TANAMAN MARKISA KUNING (PASSIFLORA FLAVICARVA) PADA TANAH ALFISOL I KETUT SARDIANA; I G.P. RATNA ADI
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Potential Study of Yellow Maracujá (Passiflora flavicarva) Suitability on Alfisol Soil The objectives of this study was to determine land characteristics and land suitability for maracujá (Passiflora flavicarva) on Alfisols soil in District of Melaya, Jembrana Regency. The study used the land unit with homogeneus on climate, terrain, and landuse as sampling units. The climate data was analysed by classifying the rainfall degree based on Oldeman and Schmidt-Ferguson system.The characteristics of land were fixed based on the field survey and the soil analysis in the laboratory. Class or sub class of land suitability is based on matching system between land qualities and crop requirements. The results show that land suitability for maracujá (Passiflora flavicarva) commodities is categorized as moderately suitable (S2) with two limiting factors i.e. C-organic and total nitrogen of the soils. Corganic in the soils is needed to keep the balance of the elements and humidity of the soils. The cultivation of this plant, needed at least 74 kilograms organic matter/plant/year.
PERTUMBUHAN DAN HASIL PANEN PADI SRI (SYSTEM OF RICE INTENSIFICATION) GEDE MENAKAADNYANA
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Growth and Yield of Paddy SRI (system of rice intensification). The study was conducted with the aim to conserve irrigation water use, maintaining soil health so as to support the growth of roots and the top of the rice plants become better and grain yield can be improved. The trials of SRI paddy cultivation techniques performed in the dry season planting season (MT April-May 2005) at the project site groundwater Jembrana area of 2.0 ha is in Subak Pangkung Liplip. The study results showed that the reduction in the amount of irrigation water does not interfere with plant growth, even able to increase the number of tillers per hill. The maximum number of tillers paddy SRI is 31.79 per hill, higher 79.90 % compared to Conventional paddy rice. The maximum number of tillers of Conventional paddy rice is 17,67 per hill. The grain yields of paddy SRI is 6.32 ton/ha, it is of 37.99 % higher than Conventional paddy rice. The grain yield of Conventional paddy rice is 4.58 ton/ha. Based on the results of field trials, can be recommended for further trials with measuring irrigation water.

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