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Agrotrop : Journal on Agriculture Science

agrotrop
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Published by Universitas Udayana

ISSN : 2088155X EISSN : 26544008 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Journal AGROTROP

Arjuna Subject : -

Articles 400 Documents

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Kajian Potensi Sumberdaya Lahan Untuk Pengembangan Tanaman Hortikultura Di Kecamatan Manggis Kabupaten Karangasem I MADE MEGA; I NYOMAN PUJA; I NYOMAN SUNARTA; I WAYAN NUARSA
Agrotrop : Journal on Agriculture Science Vol 4 No 1 (2014)
Publisher : Fakultas Pertanian Universitas Udayana

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The Study of Land Resource Potentials at Manggis District, Karangasem Regency forDevelopment of Horticulture Crops.The objective of the research was to study the potential ofland resources for growing horticulture crops at Manggis District, Karangasem Regency. Soil surveyand laboratory analysis were used in this research. The parameters of soil characteristics observedwere soil morphology in the fields, and physical and chemical properties. The results showed that thelands of Manggis District classified into ‘suitable enough’ until ‘very suitable’ for growing horticulturecrops. The limited factors were root medium; nutrient retention and terrains

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%.

Identifikasi dan Karakterisasi Sumber Daya Genetik Buah-buahan Lokal di Kabupaten Jembrana I PUTU DIAN PRATAMA; I GUSTI ALIT GUNADI; IDA AYU PUTRI DARMAWATI; I NYOMAN RAI
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Identification and Characterization of Plant Genetic Resources Local Fruits in Jembrana. Fruits are one source of nutritious food that have diverse functions such as: source of vitamins, minerals, and fiber needed in the daily menu. Fruits are used as community consumption, tourism needs, inter island trade, as well as for religious activities, even thoughthere are local fruit are used in “usadha”by generations. Jembrana Regency has various types of fruits. This study aims to identify the genetic resources of fruits in Jembrana Regency. This research was conducted in five stages: (1) collected secondary data, (2) surveyed the types of genetic resources and their distributions, (3) identification of morphological and agronomiccharacters, (4) determined superior fruit, and (5) compiled geographic map the distribution of genetic resources of local fruits. The result of research found 38 species and 53 sub-types of local fruit plants, with 6 types of superior fruit, 12 type of rare fruit, 17 types of fruit for upakara, and 9 types of fruits for medicine. Based on the survey conducted in Jembrana District, 41 geographical distribution maps of local fruits can be compiled.

Peningkatan Produksi Pangan pada Lahan Sawah dengan Penerapan Pemupukan Hara Spesifik Lokasi (PHSL) Melalui Evaluasi Status Unsur Hara Tanah I NYOMAN SUNARTA; I NYOMAN MERIT; NI MADE TRIGUNASIH; TATIEK KUSMAWATI
Agrotrop : Journal on Agriculture Science Vol 5 No 2 (2015)
Publisher : Fakultas Pertanian Universitas Udayana

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An Increase of The Yield of Paddy Rice with Application of The Site-Specific NutrientFertilization (SSNF) through Evaluation of The Nutrient Soil Status. Agricultural landincluding paddy fields decreases every year due to land conversion and decreasing of waterresources for irrigation. However, the need for food (rice) increases simultaneously with theincreasing of population growth. Although inorganic fertilizer and improved varieties of ricehave been intensively used, however, expected rice production has not been achieved.Fertilization based on site-specific nutrient might require for solving the problems. Researchconcerning of the site-specific nutrient fertilization (SSNF) have been carried out at Megati,District of Selemadeg Timur Tabanan Regency from April to October 2015. The objective ofthe research was to find out the effects of several types of fertilization with differentcomposition on the growth and yield of rice. The treatments were Kd0P0 (without fertilizer),Kd0P1 ( without organic fertilizer ; 100 kg urea, 25 kg SP36,and 25 kg KCl ha-1), Kd0P2(without organic fertilizer ; 150 kg urea, 50 kg SP36 and 50 kg KCl ha-1), Kd0P3 (withoutorganic fertilizer; 200 kg urea, 75 kg SP36 dan 75 kg KCl ha-1), Kd1P1 ( 5 tons of organicfertilizer ha-1; 100 kg urea, 25 kg SP36,and 25 kg KCl ha-1 ), Kd1P2 ( 5 tons of organicfertilizer ha-1; 150 kg urea, 50 kg SP36 and 50 kg KCl ha-1 ), Kd1P3 (5 tons of organicfertilizer ha-1; 200 kg urea, 75 kg SP36 and 75 kg KCl ha-1 ), and SSNF (5 tons of organicfertilizer ha-1; Rainbow NPK 200 kg ha-1 and 75 kg urea ha-1). The results showed that theplant height and the highest number of productive tillers was obtained from Kd1P3 treatment.The highest yield was obtained from the SSNF treatment. The SSNF treatment produced 9.12ton dried grain ha-1.

Streptomyces sp. Sebagai Biofungisida Patogen Fusarium oxysporum (Schlecht.) f.sp. lycopersici (Sacc.) Snyd. et Hans. Penyebab Penyakit Layu Pada Tanaman Tomat (Solanum lycopersicum L.) NURI MANDAN SARI; RETNO KAWURI; KHAMDAN KHALIMI
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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A research was conducted to isolate Streptomyces sp. of soil Udayana University campus in theBukit-Jimbaran, to obtain the most effective Streptomyces sp. which is effective in inhibit the growth ofFusarium oxysporum f.sp. lycopersici, and to test response of tomato plants with Streptomyces sp.culture against Fusarium wilt desease. Implementation phases of the research consisted of isolation andidentification of Streptomyces sp, test the inhibition against F. oxysporum f.sp. lycopersici, and in vivotest used by dyeing the roots of the tomato plant (Solanum lycopersicum) with Fusarium spores andafter 30 seconds the roots were dyeing Streptomyces culture. Furthermore, sterile soil in polybagwatered by Fusarium spores and Streptomyces culture at the same time. Based on morphologicalcharacteristic it found five isolates of Streptomyces sp.. The antagonist test showed Streptomyces sp.1 had ability (75%) against Fusarium, Streptomyces sp 2 (68,3%), Streptomyces sp. 3 (71,6%),Streptomyces sp. 4 (63,3%), and Streptomyces sp. 5 (21,6%). All Streptomyces suppressed thegrowth of Fusarium on tomato plants in glass house (p<0,05). Streptomyces sp.3 suppressed Fusariumwilt disease in tomato from 88% in control to 20%.

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.

Uji Efektifitas Endomikoriza Indigenus terhadap Pertumbuhan Tanaman Jagung (Zea mays L.) ONESIMUS KE LELE; I NYOMAN RAI; I KETUT SUADA
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

The Effectiveness Test of Indigenous Endomycorrhiza on Maize Plant Growth (Zea mays L.). Efforts to increase crop productivity were hampered due to various obstacles such as genetic, environmental, and biotic factors, in order that alternative technologies such as endomycorrhizal biological agents were required. This study was aimed to determine the effectiveness of indigenous endomycorrhiza for the growth of maize. The experiments were carried out in the laboratory and greenhouse. The field experiment was designed in a nested randomized block design. The first factor was genus of indigenous endomycorrhiza (M) consisting of 3 lavels i.e genus Glomus (G), genus Gigaspora (F) and the mixed genus (C), the second factor was the spore dose (D) consisting of 3 levels i.e. D1 = dose of 50 spores, D2 = 100 spores and D3 = 150 spores. The genus Glomus was able to increase the weight of fresh and dry oven total stalk, the number of leaves and the height of the plants and those significantly higher than that of the genus of Gigaspora and the mixed genus. Spore doses (50, 100 and 150 spores) of the genus Glomus and the genus Gigaspora and mixture gave no significant different results on all observed variables.

Perbanyakan Tanaman Jeruk Siam (Citrus nobilis L.) dengan Teknik Kultur in vitro Menggunakan Biji Tanaman Terinfeksi Penyakit Citrus Vein Phloem Degeneration (CVPD) BAYU ARYA BAGASKARA; I GEDE PUTU WIRAWAN; MADE SRITAMIN; I GUSTI AYU DIAH YUNITI
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Citrus (Citrus nobilis L.) Propagation Through Culture In Vitro Using Seed From Infected Plants Of Citrus Vein Phloem Degeneration (CVPD) Disease. The sample was taken in Belancan Village, Kintamani District, Bangli Regency, and invitro culture was conducted in UPT. Genetics Resource and Molecular Biology Laboratory in February to June 2018. This research purposes were to get the new citrus plant from citrus seed infected of CVPD disease explants with culture in vitro and found the presence of the bacterium Liberobacter asiaticus in results of citrus plants culture in vitro. The sampling method is using plants appearance. Obtained sample 1 is a plant that shows severe symptoms of CVPD disease and sample 2 plants that show no symptoms of CVPD disease. Seed Sample is cultured with MS0 medium for 8 WAP then proceed to acclimatization. The results of this research showed that the seed explants from both samples were able to grow well and did not have the characteristic of CVPD disease, but explant seed sample 2 in vitro culture result showed that the bacterial DNA bacterium Liberobacter asiaticus pathogen CVPD disease does exist in length 1160bp, so it cannot be expected to produce CVPD-free crops.

Epidemiologi Penyakit Karat pada Tanaman Jagung (Zea mays L.) di Denpasar Selatan NI MADE PUSPAWATI; I MADE SUDARMA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Rust Disease Epidemiology of Maize (Zea mays L.) in South Denpasar. Rustdiseases consists of Southern rust, Common rust, and Tropical rust, has contracted causingsubstantial losses in maize in the world. Disease began to be seen attacking the corn crop inSouth Denpasar. The purpose of this study to determine the presence of rust disease on corn ,contracted diseases, epidemiology, and weather factors that dominate affect diseaseprogression. Place of research conducted in South Denpasar, the time from April to June2016. The study used survey methods at the center of the corn crop, and then determine thesample of plants by taking a random 20 corn plants in each plot, which was repeated 3 times.The results showed that the type of rust that attacks corn planting area in the south ofDenpasar was a kind of Southern Corn Rust, caused by the fungus Puccinia polysora.Pathogens can be identified by urediniosporanya, which is elliptical, there is also a round withno makrokopis symptoms on the leaves are brown reddish yellow . Epidemiology of diseasesincluded in the criteria being the epidemic range from 0.054 to 0.329 per unit per day. Therelationship between temperature and humidity with the intensity of the disease were notsignificantly different, but the relationship temperature with infection rate was significantlydifferent, while relationship humidity with infection rate was significantly different. Multipleregression temperature and humidity with infection rate was highly significant.

Pengaruh Pemberian Beberapa Konsentrasi Bahan Pengawet Chrysal terhadap Kesegaran Bunga Sedap Malam (Polianthes tuberosa) I KOMANG ALIT ERIADI; I MADE SUKEWIJAYA; I NYOMAN SUTEDJA
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Effect of several concentrations of preservatives Chrysal the tuberose flower freshness (Polianthes tuberosa). Nowadays, ordering tuberosa cut flower is increasing, but the main problem which is often happen for tuberose flower is the short vase life of tuberose cut flower freshness. One of appropriate strategies that can be used to improve flower freshness is the use of preservatives. The main function of preservatives is as improving for the vase life of cut flower freshness. Chrysal preservatives are a soaking liquid which contains sucrose, dextrose, and citric acid in order to improve vase life of flower. This research is aimed to identify the influence of Chrysal to improve vase life of tuberose flower freshness. This research is conducted in Post-harvest Technology Laboratory of Agriculture Technology Faculty in Udayana University. This research uses complete random sequences (RAK) based on one factor namely Chrysal concentrative. Each action including five repetitions and a trial includes two stems of tuberose cut flower. The outcome shows that Chrysal concentrative influences the significant for four variables namely, percentages of flower blossom, flower freshness, long flower freshness, and the total of absorbed solution. The actions of concentrative Chrysal influence significant for weight loss. The short vase life of flower freshness are haven on using Chrysal concentrative 0 mg (C0) along four days, and the long vase life of flower freshness are haven on using Chrysal concetrative 1000 mg (C4) for five or four days.

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