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THE EFFECTIVENESS OF INDIGENOUS ENDOMYCORRHIZA AND RHIZOBIUM INOCULUM IN INCREASING NUTRIENT UPTAKE AND YIELD OF SOYBEAN IN DRY LAND Yosni Kiuk; I Nyoman Rai; Anak Agung Istri Kesumadewi
International Journal of Biosciences and Biotechnology Vol 7 No 1 (2019)
Publisher : Central Laboratory for Genetic Resource and Molecular Biology, Faculty of Agriculture, Udayana University in cooperation with Asia-Oceania Bioscience and Biotechnology Consortium (AOBBC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.738 KB) | DOI: 10.24843/IJBB.2019.v07.i01.p03

Abstract

Increasing the productivity of soybeans in dry land can be done by designing a package of fertilizer technology based on biological materials using indigenous endomycorrhiza and Rhizobium. The application of indigenous endomycorrhizal biofertilizer combined with Rhizobium is expected to be able to improve nitrogen and phosporus uptake so as to increase the productivity of soybeans in dry land. The experiment used two-factor factorial randomized block design. The first factor was dose of endomycorrhizal spores of Glomus that consisted of four levels, namely, treatment without endomycorrhiza inoculation, dose of 50endomycorrhizal spores, dose of 100 endomycorrhizal spores, and dose of 150 endomycorrhizal spores. The second factor was inoculation of Rhizobium inoculum that consisted of two levels, namely, treatment without Rhizobium inoculation and Rhizobium inoculation. The results showed that combination of 50 endomycorrhizal spores with Rhizobium inoculation gave the best effect on the number of effective root nodules per plant, endomycorrhizal infection per plant, nutrient uptake by plant, number of pods per plant, number of seeds per plant, and oven-dry weight of seeds per plant.
Kajian Status Kerusakan Tanahpada Lahan Pertanian di Kecamatan Denpasar BINTANG REDITYA A. S; R. SUYARTO; A. A. I. KESUMADEWI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.5, No.1, Januari 2016
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT The Study of Soil Degradation at Agricultural Land In South Denpasar Sub-District Agricultural soil degradation is an important issue all over the world. This issue had gained attention by Indonesian Government as indicated by the released of Indonesian Government Regulation with serial Number of 150 on 2000 for prevention of agricultural soil degradation. Based on the regulation, a study was carried out to evaluate soil degradation on agricultural field of South Denpasar Sub-District on February to July 2014. Observation area was selected based on work map that was developed by overlaying thematic maps, which were including landuse, soil and topography maps. The sampling locations were chosen according to Stratified Purposive Sampling method. The selected area were including rice fields that both located on Entisols and Inceptisols as well as dryland on Entisols that all of them laid down on slopeness ranging on 0-3%. The results of the study showed that agricultural field in South Denpasar Sub-District were potentially degraded on a range of very low – low.  Paddy field had potential degraded area that grouped to very low degraded, while dryland potentially low degraded. According to the matching and score methods based on the selected soil properties had been quantified, 26,48% of agricultural field in the research area considered to be low degraded with coverage area was 317,86 Ha of paddy field and another 73,52% (880 Ha of paddy field and 2,57 Ha of dryland) was undegraded. This findings was contradicted to their potential degradation. The soil degradation in paddy fields were indicated either by the soil permeability and electrical conductivity that were higher than that has allowed according to Indonesian Government Regulation. Keywords: Soil Degradation, Agricultural Land
Interpretasi Citra Satelit Landsat 8 Untuk Identifikasi Kerusakan Hutan Mangrove di Taman Hutan Raya Ngurah Rai Bali I WAYAN RUMADA; A. A. ISTRI KESUMADEWI; R. SUYARTO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.4, No.3, Juli 2015
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT A study of Landsat 8 satellite image interpretation for identification of mangrove forest destruction in Forest Park Ngurah Rai Bali A study of Landsat 8 satellite image interpretation for identification of mangrove forest destruction in Forest Park Ngurah Rai Bali, was conducted in March-July 2014. The study was aimed to determine the damage and condition of the mangrove forest in 2013. Remote sensing techniques was applied through analysis and interpretation of NDVI (Normalized Difference Vegetation Index). The landsat 8 image that was used in this study issued by (USGS 2013), and the path and row was (116/66). The NDVI result was confirmed by purposive field survey on selected area. The results of the study showed that the damage on mangrove Forests can be classified into three classes based on NDVI analysis. These classification was as follows (a) severely damaged with an area of ??20,25 hectares, (b) slightly damaged with an area of ??22,86 hectares, and (c) not damaged with an area of ??1.042,02 Ha. According to this finding the accuracy of NDVI analysis for identification mangrove canopy density in this study was 75% for mangrove land use type 90%. Keywords: NDVI (Normalized Difference Vegetation Index), Satellite Imagery, Mangrove Forest Damage Level.
Analisis Populasi Tanaman Bayam Cabut (Amaranthus Spp. L.) dan Sawi Hijau (Brassica juncea L.) pada Sistem Bertanam Vertikultur NI LUH BUDI ASIH; I PUTU DHARMA; ANAK AGUNG ISTRI KESUMADEWI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.3, Juli 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Population Analysis of Spinach (Amaranthus Spp. L) and Green Mustard (Brassica Juncea L.) Crops on Verticulture System Production of spinach and mustard greens in Denpasar is still low. The effort to increase the vegetables production need to be done with a verticultural system but the crops population should be considered. Therefore, a greenhouse experiment to find out the optimal population of spinach and mustard greens grown under verticulture system had done on July - November 2016 in Denpasar. The experiments was conducted using randomized split block design with three replications.The treatments were consisting spinach and green mustard as the main plot and the additional factor consisted of five population levels, namely 8, 12, 16, 20 and 24 plants per container. The total number of experimental units was 30. The population effect of spinach and mustard greens was shown on fresh weight variables per plant which were analyzed by regression analysis. The results of the regression analysis on fresh weight variables per plant showed that the population negatively affected the fresh weight of spinach plants per plant and had a positive effect on the fresh weight of green mustard plants per plant.
Pengaruh Ukuran Biochar Bambu dan Dosis Pupuk Urea terhadap Efisiensi Pupuk dan Hasil Tanaman Sawi Hijau (Brassica juncea L.) pada Tanah Berpasir ANAK AGUNG GDE PREHATRESNA ADI ASMARA; I WAYAN DANA ATMAJA; ANAK AGUNG NGURAH GEDE SUWASTIKA; ANAK AGUNG ISTRI KESUMADEWI
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p05

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The Effect of Bamboo Biochar Size and Urea Fertilizer Dosage on Fertilizer Efficiency and Yield of Green Mustard (Brassica juncea L.) in Sandy Soil. Biochar is charcoal produced from incomplete combustion (carbonization). Biochar is a soil amendment agent that has long been known in agriculture which is useful for increasing soil productivity. This study aims to determine the effect of bamboo biochar size and urea fertilizer dosage on the efficiency of urea fertilizer and yield of green mustard (Brassica juncea L.). This research was conducted from May 2020 to September 2020 at the Experimental Garden of the Faculty of Agriculture, and at the Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. The research design used was a completely randomized design (CRD) with 2 factorials and 3 replications. The treatment factors consisted of P0 = 0kg urea (control) (0 grams / pot), P1 = 100kg urea / ha (0.2 grams / pot), P2 = 200kg urea / ha (0.4 grams / pot), P3 = 300kg urea / ha (0.6 gram / pot), B1 = 0.25-2.00 mm, B2 = 2.38-2.83 mm, B3 = 2.83-3.36 mm. The parameters observed were levels of ammonium, nitrate, soil pH, microbial population, soil respiration, crop yields including fresh weight and oven dry weight of the plant. The results of the analysis showed that the effect of biochar and urea fertilizers interacted very significantly with the parameters of the microbial population and had no significant effect on the parameters of ammonium, nitrate, soil pH, soil respiration, plant fresh weight, plant dry weight, root fresh weight, root dry weight and efficiency. fertilizer. Biochar treatment has a significant effect on biological factors and fertilizer treatment affects soil chemical properties, crop yields are influenced by a single factor.
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

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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).
Jumlah Spora dan Genus Endomikhoriza pada Tanah Monokultur dan Tumpangsari Jeruk Siam (Citrus nobilis Tan.) dengan Tanaman Sayuran di Desa Sekaan Kecamatan Kintamani CHARLES ALEXANDER YAWAN; ANAK AGUNG ISTRI KESUMADEWI; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (500.456 KB) | DOI: 10.24843/AJoAS.2017.v07.i01.p04

Abstract

The Spores and Genus Number of Endomikoriza on soil of Citrus Orchard Soil in Monoculture (Citrus nobilis Tan.) and Intercrops with Vegetables in Sekaan Districts Kintamani. Endomycorrhiza is a wide spread fungi that develop symbiotic association with numerous plant types except for Brassicaceae and Chenopodiaceae. Endomycorrhizal fungi colonized plants through spore or hypha propagation. The spore number of endomycorrhiza was studied in the soil of orange orchard in the Bali’s center of orange fruit production located in Sekaan Village, Bangli District during November 2015 – January 2016. The orange plants were cultivated in monoculture and intercropped with the following vegetable crops : cucumbers (Cucumis sativus L), tomatoes (Solanum lycopersicum), mustard greens (Brassica rapa subsp. Pekinenshis), and cabbage (Brassica oleracea var. capitata). Three replications of soil samples were taken purposively and separately proceed for laboratory analysis. The following parameters were measured: total spore number and genus types of endomycorrhiza, the content of soil available-P, soil pH, and soil organic-C. The experiment result showed that monoculture system had significant higher number of VAM spores (347 spores) compared to intercropping (178 – 224 spores). Most of VAM spore had small size ranging on 45 – 105 ?m (60,80%) followed by 106 – 249 ?m (33,82%) and the least were ? 250 ?m spores. There were two MVA genus present in the soil of both cropping patterns which grouped to Acaulospora (3 morphotypes) and Glomus (11 morphotypes). The highest number of VAM spores belongs to Glomus.The soil properties that closely related to VAM spore number was soil pH (=0.66**).
Beberapa Sifat Biologi Tanah Kebun Jeruk Siam (Citrus nobilis Tan) pada Sistem Monokultur dan Tumpangsari dengan Beberapa Tanaman Sayuran di Desa Sekaan Kecamatan Kintamani I WAYAN BUNADA; ANAK AGUNG ISTRI KESUMADEWI; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Some Biological Soil Properties of Orange Orchard (Citrus nobilis Tan)under Monoculture and Intercropping System with some Vegetable Cropsin Sekaan Village of Kintamani Districts. Orange fruit is of economically importantcommodity in Bali. The fruits mostly produced in Bangli Regency including KintamaniDistrict under intensified monoculture and intercropping with vegetable crops. Those systemspredicted contribute to variation of soil biological properties as the results of differences inmagnitude of agrochemicals that being used. A research about soil biological properties oforange orchard land was conducted in Sekaan Village of Kintamani on November 2015 -March 2016. The purpose of the study was to differenciate the soil biological propertiesamong the common cropping pattern applied in the study area, namely: monoculture oforange, and either intercropping of orange with cabbage (Brassica oleracea), tomatoes(Solanum lycopersicum), chilli (Capsicum annum L.), or cucumber (Cucumis sativus). Threereplications of rhizosperic soil samples were collected from each planting systems andproceed for selected soil analysis. The measured parameters were soil pH, organic-C, as wellas the respective total population number of soil microorganisms, fungi, Gram (+) and Gram(-) bacteria, and also soil respiration. The results showed that total population number of soilmicroorganisms and total fungi were significantly higher on intercropping compare tomonoculture systems. No significant different of those present among soils that cultivatedwith different vegetable crops. In contrary, no differences were also observed for both soilrespiration value and total number of G (+) and G (-) bacteria among soils differing incropping pattern.
Kajian Hubungan Populasi Tanaman dengan Neraca Unsur Hara Nitrogen dan Fosfor pada Sistem Vertikultur Sawi Hijau (Brassica juncea L) dan Kangkung (Ipomea reptana) I MADE PURNA WIDANA; ANAK AGUNG ISTRI KESUMADEWI; DESAK NYOMAN KASNIARI
Agrotrop : Journal on Agriculture Science Vol 6 No 1 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Analysis of Relationship Between Crop Density and The Balancing of Both Soil Nitrogenand Phosporus in Verticulture System of Mustard Green (Brassica juncea L) and Kale(Ipomea reptana). The relationship between crops density and the balancing of both soilnitrogen and phosphorus in verticulture system remained to be important issue. A glasshouseexperiment had carried out from October 2014 to March 2015 in order to determine (1) theoptimum population density of both mustard greens (Brassica juncea L) and kale (Ipomeareptana), (2) soil total-N or available-P balance, and (3) the relatiohships between plantspopulations and soil nutrients balance. A split plot experiment under complete block designwas applied to examine the effect of the main plot (crops type i.e. mustard green and kale) andsub plot (crops population i.e 10, 15, 20,25, and 30 crops per planting container 0,12 m2 insize). The results showed that no optimal crops population density had achieved. Themaximum crops population was 30 for both mustard greens and kale. The soil total-N balancewas negative while these was positive for soil available-P balance of P and N negative. Alogarithmic relationships was calculated between soil total-N balance with mustard green,while linier patterns were significant for soil-N balance with kale and available-P balancewith both mustard greens and kale.
Pengaruh Pupuk Organik dan Anorganik terhadap Pertumbuhan dan Hasil Tanaman Sawi Hijau (Brassica rapa. L) ARJUNA YOHANNES SIMANULLANG; NI LUH KARTINI; ANAK AGUNG ISTRI KESUMADEWI
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 (206.186 KB) | DOI: 10.24843/AJoAS.2019.v09.i02.p07

Abstract

The Effect of Organic and Inorganic Fertilizers on The Growth and Results of Green Mustard (Brassica rapa L.). Green mustard (Brassica rapa L.) is a vegetable that preferred by many consumers, this causes many farmers cultivate this vegetables. One of the important factor in the cultivation of green mustard is fertilizer type. Alternative to improve soil quality and fertility is by providing organic matter. A field research was conducted to evaluate the effect of organic and inorganic fertilizers on the growth and yield of green mustard, in Banjar Taman Tande, Baturiti Village, Bedugul from April to June 2018. This study was designed with a Randomized Block Design with nested patterns consisting of two factors. The first factor was the type of fertilizer, which was consisted of four types of organic fertilizer, namely: vermicompost, cow manure, chicken manure, goat manure and inorganic fertilizers (NPK Mutiara). The second factor was fertilizer dosage, which was consisted of three levels, namely: 0 tons/ha, 15 tons/ha, and 30 tons/ha, while for NPK Mutiara fertilizer dosages, namely: 0 kg/ha, 150 kg/ha, and 300 kg/ha.The results showed that the effect of organic and inorganic fertilizers were not significantly different on the growth and yield of green mustard plants and RAE values. The total N content of soil on vermicompost treatment was 0.23% equal to NPK Mutiara. The total population of soil microbes on vermicompost treatment under dosage of 15 tons/ha and 30 tons/ha were 1.4 x 106 cfu/g that was much higher compared to NPK Mutiara 150 kg/ha fertilizer (0.3 x 106 cfu/g).