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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 400 Documents
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Kualitas Kompos dari Berbagai Kombinasi Bahan Baku Limbah Organik TATI BUDI KUSMIYARTI
Agrotrop : Journal on Agriculture Science Vol 3 No 1 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The Quality of Compost on Various Combinations of Organic Waste Raw Materials Evaluation of compost stability prior to its use is essential for the recycling of organic waste in agricultural soils. During composting, most of the biodegradable organic compound are broken down and a portion of the remaining organic material is converted into humic-like substances, with production of a chemically stabilized composted material. This experiment aimed to monitor the changes in physicochemical characteristics during composting of three kinds compost heap and to define parameters suitable for evaluating the stability of compost. The experiment were conducted from Mei to October 2011 and consisted of three treatments with six replicates for each treatment. Compost pile temperature,the pH, that reflected the initiation and stabilization of the compost, were measured during the composting process. The carbon organic material content, carbon and nitrogen content, the carbon to nitrogen ratio, organoleptic characteristics, and K2O, P2O5, Mg, Ca content were measured to evaluate the quality of the physicochemical properties of the compost. Compost toxicity level had evaluated using Germination Index. The result showed that the quality of compost from all treatments that were evaluated in this experiment meet the standard quality of SNI 2004.
Karakterisasi Biokimia Aeromonas hydrophila dan Potensinya Sebagai Pemacu Pertumbuhan Bibit Tanaman Melon Emas I KETUT SIADI; KHAMDAN KHALIMI; DEWA NYOMAN NYANA
Agrotrop : Journal on Agriculture Science Vol 4 No 1 (2014)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Biochemical Characterization of Aeromonas hydrophila and Its Potential for Growth Stimulatorof Golden Melo Seedlings.The results showed that this research got 20 nitrogen fix bacteria isolate,However, Pg2 isolate could increase the growth of golden melo. The treatment with Pg2 isolatesignificantly increased the golden melo growth. All the plant growth parameters of treated plants weresignificantly higher than those of un-treated control plants (P<0.05). The leaf chlorophyll content, plantgrowth rate, and fresh and dry weights of plant were significantly higher than those of un-treatedcontrol plants. Isolates identified as Enterobacter cloacae PG2 percentage of 98.05% probability.
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).
Uji Daya Hambat Jamur Endofit dan Eksofit dalam Menekan Pertumbuhan Fusarium oxysporum f.sp. vanillae Penyebab Busuk Batang Panili Secara In Vitro NI WAYAN SUNITI; I MADE SUDARMA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Study on In Vitro Inhibitory Ability of Endophytic and Exophytic Fungusin Suppressing the Growth of Fusarium oxysporum f.sp. vanillae thatCauses Stem Rot of Vanilla. Vanilla stem rot disease caused by Fusarium oxysporumf.sp. vanillae , is still a very dangerous disease and feared by vanilla farmers. Disease until thepresent time there does not yet appear adequate control strategies for the disease. On the basisof these problems interested studied the use of endophytic fungi and exophytic existing on theleaves and stems of healthy plants , which have potential as a biological agent to controlpathogens . The study was conducted in three stages: (1 ) isolation of the pathogen and fungalendophyte and exophytic, (2) identification of pathogenic microscopic morphology, fungalendophyte and exophytic, and (3) test the inhibition of fungal endophyte and exophyticagainst pathogens. Fungi are found as the leaves are Aspergillus niger and Rhizopus spp., Onexophytic on the trunk is Trichoderma sp . and Fusarium spp., as a leaf endophytic found A.niger and Neurospora spp. and as endophytic rod is Neurospora spp . The highest prevalenceachieved by Neurospora spp . which is equal to 100 % on endophyte stem, while Rhizopusspp., and Fusarium spp. by 90 % respectively, exophytic on the leaves and stems. The testresults found that the inhibition of leaf eksofit Rhisopus spp . give up inhibition ranged from70.37±3.2% - 100% , while A. niger amounted to 72.22% . In exophytic on rod found onlyTrichoderma sp. inhibit pathogens by 73.70±3.57%. In endophytic on leaf found A. niger at70.37±3.2% , while Neorospora spp. ranging from 79.11±3.21% - 88.50±2.10%. In theendophytic on trunk was found Neurosporas spp. amounting to 70.74±3.57% - 79.26±1.28%.
Editorial Agrotrop Vol. 7, No. 1, Mei 2017 Jurnal AGROTROP
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Editorial Agrotrop Vol. 7, No. 1, Mei 2017
Pengaruh Frekuensi Pengolahan Tanah dan Pupuk Kompos terhadap Sifat Fisik Tanah dan Hasil Jagung I PUTU DHARMA; I NYOMAN PUJA
Agrotrop : Journal on Agriculture Science Vol 9 No 2 (2019)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.783 KB) | DOI: 10.24843/AJoAS.2019.v09.i02.p06

Abstract

The Effect of Soil Tillages Frequency and Compost Fertilizer on Soil Physical Properties and Corn Yields. The aims of this research is to determine of effect soil tillage frequency and compost fertilizer on soil physical properties and corn yields. The method was used a Randomized Block Design (RBD), factorial consisting of two factors, namely: Soil Tillages Frequency (T) consists of 3 levels, namely: T0 = no tillage; T1 = if one time and T2 = if twice. Compost Fertilizer (K) consists of 3 levels, namely: K0 = Without compost, K1 = 5 tons compost/ha and B2 = 10 tons compost/ha. Combination treatment into 9 treatments, namely T0K0 , T0K1, T0K2, T1K0, T1K1, T1K2, T2K0, T2K1, T2K2. and each treatment was repeated 3 times, so there were 27 research plots.The results showed that the soil tillage frequency and compost fertilizer had no significant effect on the soil physical properties and corn yields. Twice soil tillage frequency resulted bulk density, porosity, soil moisture content and dry corn yields respectively 1.01 g/cm3, 60.98%, 37.31% and 0.83 kg/m2, and not significant different compared with no tillage which is 1.03 g/cm3, 60.43%, 36.57% and 0.81 kg/m2. Addition of 10 tons compost/ha resulted bulk density, porosity, soil moisture content and dry corn yield respectively 0.99 g/cm3, 61.75%, 38.21% and 0.86 kg/m2, and not significant different compared with without compost fertilizer which is 1.06 g/cm3, 59.40%, 36.44% and 0.80 kg/m2.
Peranan Serasah Terhadap Sumbangan N dan P pada Agroekosistem Kopi RUSDI EVIZAL; TOHARI TOHARI; IRFAN D. PRIJAMBADA; JAKA WIDADA
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Litter is the main source of organic matter and nutrient entrance in shade grown coffee agroecosystems.Shade trees provide ecological and economic benefits in coffee agro-ecosystems thatindicate the key factor for sustainable coffee production. This study examined the role of litter onnutrient (N and P) returning in coffee agro-ecosystems. The experimental plots of Coffea canephorawere constucted at benchmark site of Conservation and Sustainable Management of Below-GroundBiodiversity (CSM-BGBD), in Sumberjaya Subdistrict, West Lampung, Indonesia, during 2007-2010.Types of shade trees to be examined were legume shade trees of Gliricidae sepium and Erythrinasububrams, non-legume tree of Michelia champaca, and no shade tree. The results showed that: (1)kind of shading determined litter productivity of coffee agro-ecosystems. Litter productivity of coffeeagro-ecosystems with shade trees increased coffee bean yield, (2) litter was an important source of Nand P that returned into the soil. Amount of nitrogen from litter biomass has linier effect on coffee beanyield.
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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Abstract

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.
Sensitivitas Cacing Tanah Lokal dari Kecamatan Baturiti terhadap Pupuk Organik dan Pestisida Sintetik NI LUH WERDHYASTUTI; ANAK AGUNG ISTRI KESUMADEWI; NI LUH KARTINI
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.192 KB) | DOI: 10.24843/AJoAS.2018.v08.i01.p05

Abstract

Sensitivity of Local Earthworm from Baturiti District to Organic Fertilizers and Synthetic Pesticides. Earthworms were functional soil macro organism that play important role in soil ecosystem. They had known to be sensitive and susceptible to agrochemicals. Two series of study were conducted in order to determine (1) the effect of agricultural substances on avoidant behavior and (2), mortality, and biomass of the indigenous earthworms taken from vegetable fields in Baturiti Districs, Province of Bali during September 2017 - January 2018. The research was completely randomized designed to test two factors of treatment and replicate 3 times. The first factor of treatment was earthworm type collected from organic (belongs to Lumbricus terestris) and conventional (belongs to Ponthoscolex corethrurus) vegetable fields. The second factor was agriculture substances under recommended dosages, namely: furadan, ridomil (both are synthetis pesticides), and cow manure, chicken manure (organic fertilizers), that compared to control (the soil habitats without addition of agricultural substances). The results showed that no interaction was significant between earthworm type and agricultural substances. The tested agricultural substances influence the avoidance behavior, mortality and biomass of earthworms. Most earthworms moved to the control and organic fertilizers and avoid synthetic pesticide treatments. The earthworm mortality was only found in pesticides treatment i.e. furadan (30 %) and ridomil (20 %). The earthworm biomass was decreased on control, furadan, and ridomil treatments, but it increased only in the treatment of chicken manure. The highest change of earthworm biomass was in chicken manure treatment (0.02) and lowest in furadan treatment (-0.07).
Pengaruh Ekologi, Komponen Pertumbuhan, dan Komponen Hasil terhadap Produksi Tanaman Anggur: Pendekatan Multivariat Analisis SEM-PLS (Review) I MADE NARKA TENAYA; UTAMI UTAMI
Agrotrop : Journal on Agriculture Science Vol 5 No 2 (2015)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The Effects of Ecology, Growth and Yield Component to The Production of Grape:Multivariate Analysis Approach of SEM-PLS. The effects of the two main componentnamely ecological environment and genetic cannot be avoided during the process of growth ofplant since the early growth until it has produce yield. Ecological environment consist of soil,climate, and treatment mean while genetic mean variety of the plant. This research wasdesigned to study the effects of ecology, vegetative and gerative growth, and yield componento the production of grape. Structural Equation Modeling variance base with PLS Smart 2.0M3 was use to analysed the data. The result show that three of the four component hadsignificant effects on the production of grape, namely ecology, vegetative growth and yieldcomponens (p<0.05) mean while only generative component not has significant effects (tstatistic0.521 < 1.96). The production equation was PRODUCTION = - 0,235 KEKO + 0,243KVEGE + 0,020 KGENE + 0,417 KKHS (R2 = 63,2%).

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