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INDONESIA
Jurnal Agroteknos
Published by Universitas Halu Oleo
ISSN : 20877706     EISSN : 25274074     DOI : -
Core Subject : Agriculture,
Arjuna Subject : -
Articles 130 Documents
KAJIAN POTENSI RIZOBAKTERI PEMACU PERTUMBUHAN TANAMAN YANG DIISOLASI DARI RIZOSFER PADI SEHAT GUSTI AYU KADE SUTARIATI; TRESJIA CORINA RAKIAN; AGUSTINA -; NOVITA SOPACUA; LA MUDI -; MUBAYYINUL HAQ
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The experiment was carried out to characterize the ability of rhizobacteria isolated from the rhizosphere of healthy lowland rice in dissolving phosphate or fixing nitrogen.  The research was conducted from February to June 2011 at Agronomy Laboratory, Agriculture Faculty, Halu Oleo University. The experiment was arranged based on descriptive methods. Overall, the number of isolates characterized were 40 isolates.  The results of the isolate characterization were documentated with specific indicators (eg. the ability to dissolve phosphate in the form of halo/clear zone). The research indicated that most of these isolates had the ability to dissolve phosphate and fix nitrogen.  Isolates PKNW 6, PKMN 7,  PKNS 3, PKNS 9 and PKNW 4 showed better ability in dissolving phosphate and fixing nitrogen than other isolates evaluated. Further studies are still needed for the development of the potential isolates as biological agensts or biofertilizer. Keywords: healthy rice rhizosphere, rhizobacteria, fix nitrogen, dissolve phosphate
PERTUMBUHAN TANAMAN KEDELAI (Glycine max L. Merr) PADA BERBAGAI INTERVAL PENYIRAMAN DAN TAKARAN PUPUK KANDANG SARAWA -; MAKMUR JAYA ARMA; MASKI MATTOLA
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The aims of the research were to study the interaction and the independent effects of irrigation frequency and manure on soybean vegetative growth. This research was arranged based on Completely Randomized Block Design in a factorial pattern, consisted of two factors. The first factor was irrigation frequency, consisted of four irrigation frequencies, i.e., 2, 4, 6, and 8 days. The second factor consisted of 3 manure dosages, i.e. without manure, 10 ton ha-1, and 20 ton ha-1. Each treatment was replicated 3 times, therefore, overall there were 36 experimental units. Data were analysed using analysis of variance. The variables observed were: plant height, stem diameter, number of leaves per plant, and leaf area. The result of the reasearch indicated that interaction between irrigation frequency and rate of manure did not affect the vegetative growth.  Independent effect of irrigation frequency and rate of manure occured at plant height, stem diameter, number of leaves per plant, and leaf area per plant. The irrigation frequency of 2 days and manure 10 ton ha-1 significantly affected soybean vegatative growth. Keywords : Soybean, irrigation, manure  
KARAKTERISASI MORFOLOGIS Trichoderma spp. INDIGENUS SULAWESI TENGGARA GUSNAWATY HS -; MUHAMMAD TAUFIK; LENI TRIANA; ASNIAH -
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

This study aimed to determine differences in the morphological characteristics of isolates of Trichoderma spp indigenous of Southeast Sulawesi. The experiment was conducted at the Laboratory of Agro Technology, Unit of Plant Pest and Disease, Faculty of Agriculture, University of Halu Oleo, Kendari.  This study used 11 isolates of trichoderm indegenous of Southeast Sulawesi. Observation variables were macroscopic characteristics, including: colony color and form, and microscopic characteristics, including: form of conidiophores, fialid and and conidia.  The research results showed that the 11 isolates of Trichoderma spp indigenous of Southeast Sulawesi had different morphological characteristics. Types of  Trichoderma spp obtained out of the 11 isolates were T. hamantum, T. koningii, T. harzianum, T. polysporum and T. aureoviride. Keywords : characterization, indigenous Southeast of Sulawesi, Trichoderma spp.
PENGEMBANGAN BIOTEKNOLOGI PUPUK HIJAU PLUS BERBASIS VEGETASI SEKUNDER UNTUK MENINGKATKAN PRODUKSI KACANG TANAH LOKAL PADA LAHAN KERING MARGINAL NINI MILA RAHNI; LA KARIMUNA -
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The objective of this study was to increase growth and yield of three local peanut genotypes by application of green manure. The pot experiment was carried out at Watuputih, Muna, Southeast Sulawesi. Completely Randomized Design was used in a factorial pattern, replicated three times.  The first factor was genotype of local peanut, consisted of 3 genotypes, namely : (1) Wadaga, (2) Lasehao and (3) Parigi, and the second factor was green manure, consisted of 4 application rates, namely : (1) 0 ton ha-1, (2) 5 ton ha-1, (3) 10 ton ha-1 and (4) 15 ton ha-1.The experiment results showed that application of green manure had significant effects on increased N and P nutrient uptake, nitrat reductase enzymes, yield components and yields.  Parigi genotype response to application of green manure was better than Wadaga and Lasehao. Key words : Genotype, Peanut, Ultisols, Green manure.
KETAHANAN SUMBERDAYA GENETIK JAGUNG SULAWESI TENGGARA TERHADAP CEKAMAN KEKERINGAN PADA BERBAGAI FASE VEGETATIF TEGUH WIJAYANTO; CANDRA GINTING; DIRVAMENA BOER; WA ODE AFU
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

Maize crops experiencing water stress can experience cell damage, loss of turgor, closed stomata, plant leaf roll then wilt.  Germination and vegetative growth are thought to be a very sensitive phases in relation to the availability of water, because it can influence subsequent growth processes. This study aimed to determine the potential tolerance of Southeast Sulawesi’s maize genotypes to drought stress at different vegetative growth phases. This study was based on completely randomized design (CRD) with factorial pattern consisting of two factors: the first factor composed of 9 local maize genotypes of Southeast Sulawesi and 1 national variety (cv. Arjuna), while the second factor was drought stress at different vegetative growth phases, consisting of four levels ie:  C0 = plants irrigated with 100 % water availability during the growth phase, C1 = Stress for 5 days , at 21-26 days old (vegetative phase), C2 = Stress for 5 days starting at panicle emergence (early flowering stage), and C3 = Stress for 5 days starting 2 weeks after silking.  Research results showed that Genotype (G) treatment significantly influenced all observed growth variables (at age 21 and 42 days after planting, DAP), except for the variable of number of leaf, age 21 DAP. However, water stress treatment (C) only significantly affected plant height variable, at the age of 42 DAP.   In general, G6 and G7 genotypes tended to have a higher crop and trunk diameter than the other genotypes.  Contrary, G3 genotype tended to have shorter crop and smaller stem diameter than the other genotypes.  There are indications that the drought stress treatment (C) significantly inhibited the growth of maize crops. Keywords: drought strees, maize genotypes, tolerance, and vegetative phases  
ANALISIS VARIABILITAS KULTIVAR JAGUNG PULUT (Zea mays Ceritina Kulesh) LOKAL SULAWESI TENGGARA LA ODE SAFUAN; DIRVAMENA BOER; TEGUH WIJAYANTO; NELI SUSANTI
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The experiment was conducted in the Rahandouna village, Poasia, Kendari Southeast Sulawesi, from August to November 2013.  The purpose of this study was to determine the estimate of heritability between characters of thirteen local waxy corn cultivars of Southeast Sulawesi. This study was prepared using a randomized block design (RBD), with 3 replicates. Total waxy corn cultivars studied was 13 species, so that there were 39 plots. Each plot consisted of a single cultivar. Observed variables were plant height (cm), stem diameter (cm), leaf area (cm2), number of leaves (strands), ear length (cm), cob diameter (cm), number of rows per ear, weight of 100 seeds (g), ear weight. The results of this study showed that there was narrow variability on all local waxy corn characters observed. Keywords: Local waxy corn, characters, cultivars, Southeast Sulawesi, variability
ISOLASI PEKTIN DARI KULIT BUAH KAKAO (Theobroma cacao L.) DAN UJI DAYA SERAPNYA TERHADAP LOGAM TEMBAGA (Cu) DAN LOGAM SENG (Zn) MAULIDIYAH -; HALIMATUSSADIYAH -; FITRI SUSANTI; MUHAMMAD NURDIN; ANSHARULLAH -
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

Isolation of pectin was carried out from rind cocoa (Theobroma cacao L.) and its adsorption capacity to Cu and Zn metals. Isolation method was performed using several steps such as preparation of raw materials, extraction, coagulation, sedimentation, washing, drying, and refinement of pectin. This isolation was performed at pH 2.8 with extraction time of 120 minutes at 95oC. The pectin obtained was analyzed its yield, moisture, ash, metoxile, and galacturonate contents, then continued by FT-IR spectrophotometer and analysis of trick adsorption of Cu and Zn which measured by Atomic Absorption Spectrophotometer. The result showed that the pectin  obtained were 5,03 % of metoxile and 47,96 % of galacturonate contents with 0,84 % of yield,  3,55 % of moisture, and 3,60 % of ash contents. IR spectrum showed that pectin has hidroxyl and carboxyl functional groups. Adsorption capacity of pectin on Cu and Zn were 90.71 % and 87.55 %, respectively. Keywords: Adsorption Capacity, Cu and Zn Metals, Pectin, Rind Cacao.
APLIKASI KOMPOS KOTORAN AYAM UNTUK MENINGKATKAN HASIL TANAMAN MENTIMUN (Cucumis sativus L.) DI TANAH MASAM M. TUFAILA -; DEWI DARMA LAKSANA; SYAMSU ALAM
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The purpose of this study was to determine the ability of composted chicken manure to improve cucumbers yields in acid soils. The research was conducted in the Bende Village, District of Kadia, Kendari, from October to December 2013. Soil analysis was performed at the Soil Science Unit of Agro Technology Laboratory Faculty of Agriculture, University of Halu Oleo. This study was prepared using randomized block design (RBD) with a single factor of chicken manure compost treatment, consisting of 6 levels and repeated four times. The treatments were : without composted chicken manure (D0), manure dose of 5 ton ha-1 (D1), manure dose 10 tons ha-1 (D2), manure dose of 15 tons ha-1 (D3), manure dose of 20 tons ha-1 (D4) and manure dose of 25 tons ha-1 (D5). Observed variables included: growth and crop production, analysis of soil chemical properties, as well as the analysis of the quality of the fertilizer used. Data were analyzed using analysis of variance followed by Duncan's Multiple Range Test. The results showed that the use of chicken manure compost at a dose of 15 tons ha-1 (D3) gave the best effect on the growth and yield of cucumber in acid soils. Keywords: acid soi,l chicken manure compost, cucumber crop  
EKSPLORASI DAN KARAKTERISASI AZOTOBACTER INDIGENOUS UNTUK PENGEMBANGAN PUPUK HAYATI TANAMAN PADI GOGO LOKAL DI LAHAN MARJINAL ANDI NURMAS; NOFIANTI -; ABDUL RAHMAN; ANDI KHAERUNI
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

Azotobacter is bacterium that has the ability to fix nitrogen and produce hormone IAA, thus potentially acts as biofertilizer agent. There are differences in chemical, biological and other characters of Azotobacter strains. Some strains have higher ability to fix nitrogen than the others. Exploration and characterization are important to be done because the bacteria that provide nutrients and live free rhizosphere regions, possible have different abilities.  In addition to N2 fixing, growth hormone production, phosphate dissolving, they are also tolerant to a certain temperature and pH. The purpose of the research was to obtain information and the latest data on indigenous Azotobacter that potential as a source of biofertilizer, and triggering factor for upland rice growth on marginal lands in Southeast Sulawesi.  Exploration from several locations has selected 21 Azotobacter isolates. The test results indicated that the 21 Azotobacter isolates have the ability to produce IAA, dissolve phosphate and stable at pH 5.0-7.0. All 21 isolates tested had the ability to survive at 40oC, eight isolates i.e. LT2D1, LT2d2, LU2c, RG4c, MP1f, LT2d3, ML1j, and RR8awere able to survive at a temperature of 45o C, and LT2d1 isolate survived at temperatures 50oC. The results of the evaluation of the wet weight of upland rice seedlings selected 10 isolates that were: KU6e, MS3e, RG4c, RR8b1, LU2c, RB4b, MS3f, LU2c1, RJ5e, RR8b2 and evaluation of seedling dry weight selected 5 isolates that were: RB4b, LU2c, RJ5e, RR8b2, LT2d1. Keywords:      exploration, characterization, indigenous Azotobacter, local upland rice
DAMPAK PENGGUNAAN LAHAN TERHADAP SUMBER DAYA AIR: STUDI LITERATUR DAN HASIL PENELITIAN LA ODE ALWI; SITTI MARWAH
Jurnal Agroteknos Vol 4, No 2 (2014)
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Abstract

The impacts of land use, from forest to non-forest (mixed garden, husbandry, and fishery), mining, urbanization, industry and infrastructure in upstream area can give negative impact on water resource environment.  Its impact in Wanggu watershed during 1992-2010 were: a) increasing of erosion by 17.6 m3 per ha per year (81,9%), sediment by 2.2 m3 per ha per year, b) decreasing of infiltration capacity by 1.8 m per hour, soil permeability by 2.1 cm per hour, base flow and increasing run-off by 262.7 mm per year (48,8%), CRO by 0,13(46,6%), peak discharge (Qmax) by 114.2 m3 per second and decreasing of water available resources (Qmin) by 3.0 m3 per second and ratio Qmax-Qmin by 38.1 and c) decreasing of water quality because of pollution by TSD, nutrient (NO3-, PO4-3, SO4=), DO, BOD, COD, metal (Cu, Fe, Zn), pesticide, pathogen, salt, oil, color  and change of temperature regime. Its impact was categorized as light to moderate pollution.  The pollution of out-let Wanggu river was classified as serious category by DO, COD and SO4=.  The impacts of land use in Batanghari River were: DO, BOD, COD, NH3, NO2, Zn, Fe and Cu with pollution category as light to moderate. Pollution categorized as serious category by waste: agriculture, urbanization, infrastructure and industry occurred in out-let of Ciliwung River Jakarta, and out-let Berantas River in Surabaya city.  Decreasing of water volume and water quality also occurred in some states likes in India, Bangladesh, Thailand, Australia, United State of America and Fiji Island. Keywords:      Land use impacts, soil conservation, erosion, sedimentation, run-off, water quality

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