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Agroland : Jurnal Ilmu-Ilmu Pertanian
Published by Universitas Tadulako
ISSN : 0854641X     EISSN : 24077607     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Agroland : jurnal Ilmu-ilmu pertanian diterbitkan 3 kali dalam satu tahun. Jurnal ini diterbitkan oleh Fakultas pertanian Universitas Tadulako dengan tujuan untuk meningkatkan kapasitas Dosen diLingkup Fakultas Pertanian dalam Bidang Penelitian dan sebagai penunjang dalam Tri Dharma Perguruan tinggi.
Arjuna Subject : -
Articles 14 Documents
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Search results for , issue "Vol 15, No 4 (2008)" : 14 Documents clear
PENDUGAAN HERITABILITAS KETAHANAN BEBERAPA VARIETAS KENTANG (Solanum tuberosum L) TERHADAP LALAT PENGOROK DAUN (Liriomyza huidobrensis) Boedi Santoso
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

Cultivated potato (Solanum tuberosum) is an economically important crop world wide as shown by its increasing demand each year.  However, the relatively high demand of this crop is hard to meet due to leaf miner flies (Liriomyza huidobrensis) attack which could reduce potato production up to 70 percent.  The devastation is due to the ability of the flies’ imago to suck up leaf liquid and then lay their eggs which in turn develop into larvae which fed on the potato leaves.  To overcome this problem, it was necessary to assess the heritability resistance of some potato varieties to leafminer flies.  Therefore, the aim of the present study was to identify some parameters genetically resistance to leafminer flies on the potato plant. The study took place in Ngadas Village, Sukapura District of Probolinggo Residence from June to August 2007.  L  huidobrensis flies and six potato varieties such as Granola, Granola Kembang, Granola Lembang, HK, Atlantik, and Sulur were used.  The study results showed that trichome density of lower (73.29%) and upper (67.76%) leaves had high resistance heritability assessment. Such parameters with high heritability assessment can be used as selection criteria for plant breeding program.
TOKSISITAS SENYAWA BIOAKTIF TUMBUHAN “SIDONDO” (Vitex negundo L.) PADA Spodoptera exigua Hubner dan Plutella xylostella Linnaeus Burhanuddin Nasir; Sri Anjar Lasmini
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The objectives of this study were to evaluate bioactive compound contents of the ”Sidondo” plant (Vitex negundo L.) especially those compound that are potentially used as botanical pesticide and to test the plant extract influence on tested Spodoptera exigua and Plutella xylostella larvae mortality and toxicity. This study was conducted in Plant Protection and Biotecnology Laboratories, Faculty of Agriculture, Tadulako University from March to October 2008. Results of the study indicated that     crude extract of the V. negundo could kill both S. exigua and P. xylostella larvae. The highest mortality rate for S. exigua (32%) was found when the plant was extracted with ethanol and for P. xylostella (27%) was seen with methanol extraction. The effective extract concentration was 0.3% for S. exigua and 0.2% for                               P. xylostella.  The extract sub-lethal concentration (LC50) was 0.49% for S. exigua and 0.42% for P. xylostella.  The extract of V.  negundo contained Saponin which could be used as a botanical insecticide active ingredient
KETERSEDIAAN DAN SERAPAN HARA P TANAMAN JAGUNG MANIS PADA OXIC DYSTRUDEPTS PALOLO AKIBAT PEMBERIAN EKSTRAK KOMPOS LIMBAH BUAH KAKAO Saiful Darman
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The aim of the research was to determine the phosphorous availability and uptake by sweet corn plant in Palolo Oxic Dystrudepts, Central Sulawesi added with extract of cacao fruit waste compost.  The experiment used a Completely Randomized Block Design with the extract levels of the cacao fruit waste compost as treatments. The applied levels of the extract were as follows: Control, 500 L ha-1, 1000 L ha-1, 1500 L ha-1, 2000 L ha-1, 2500 L ha-1, 3000 L ha-1, 3500 L ha-1, 4000 L ha-1, and 4500 L ha-1.   The research results showed that the addition of the compost extract could increase soil pH, total P, available P, P uptake and plant dry weight. The soil pH, total P, available P increased with the compost extract levels and reached their maximum at the 4500 L ha-1 treatment. Whereas the largest P uptake and plant dry weight was found at the 4000 L ha-1 treatment. 
EFEKTIVITAS BAHAN ORGANIK DAN TINGGI GENANGAN TERHADAP PERUBAHAN Eh, pH, DAN STATUS Fe, P, Al TERLARUT PADA TANAH ULTISOL muhammad Basir-cyio
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The aim of the research was to determine the value of redox potential (Eh), soil reaction (pH) and status of soluble soil Fe, P and Al as a result of organic matter addition under submerged condition in Ultisol Kulawi. It is expected that the research results could add more information; be used as consideration; and basis for effective paddy field management resulting in maximal production. The experimental research was conducted in March-June 2007. The sampled soil location was in Kulawi sub district, Donggala Regency, Central Sulawesi Province. Soil analysis was carried out in Soil Science Laboratory of Agricultural Faculty Tadulako University. The experiment used a Completely Randomized Block Design with factorial experiment. The first factor was various water depths: muddy (TG1), 10 cm (TG2), and 15 cm (TG3). The second factor was organic matter levels: 0 t ha-1 (BO1) and 15 t ha-1 (BO2). The various water depths and organic matter levels significantly increased the availability of phosphorous and significantly reduced the solubility of Fe and Al. Soil submergence with organic matter addition could improve soil fertility. The water depth of 10 cm with 20 t ha-1 organic matter was very effective in the paddy field management. With such condition soil pH increased close to neutral, available P improved, and Eh, soluble Fe and Al reducedKeywords : Organic matter, redox potential, and soil reaction
KEBERHASILAN PERTAUTAN SAMBUNG PUCUK PADA MANGGA DENGAN WAKTU PENYAMBUNGAN DAN PANJANG ENTRIS BERBEDA Yohanis Tambing; Abd. Hadid
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The objective of the research was to identify scion length and time for a successful graft union of mango plant. The experiment used a Randomized Block Design with factorial pattern replicated three times.  The factors consisted of grafting time (morning, noon, and afternoon), and scion lengths (7.5, 10 and 12.5 cm). The research results showed that grafting in the afternoon produces better graft union seedling.  However, grafting conducted at noon could also generate good graft union seedling as long as the length of the scion was 12.5 cm. The results from the research was still far from perfect. Therefore, it is recommended that the research should be continued in order to identify the treatment consistency.
THE EFFECT OF DIET AND PELLET SIZE ON THE PASSAGE RATE OF FEED IN THE DIGESTIVE TRACT OF BROILER CHICKENS Burhanudin SUndu
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

An experiment was carried out to determine the rate of intestinal passage of a pelleted copra meal based diet compared to that of a pelleted corn-soy based diet both ground to different pellet sizes. A total of 64 male broiler chickens of six weeks of age were used in this trial. The birds were kept in cages equipped with a trough feeder and drinker. On day 1 to 5, the birds were fed the experimental diets. On day 6, after a 12 h feed restriction, all birds were orally administered with 85 mg chromium oxide in a gelatine capsule. Four birds per treatment were killed by cervical dislocation. Gizzard and small intestine were opened and the colour of the digesta observed to visually determine the location of the chromium oxide. The faeces were observed for first appearance of entire coloured faeces and then on an hourly basis up to the disappearance of coloured faeces. The experimental design was a two way factorial with two basal diets and pellet sizes. Data indicated that a copra meal diet moved in the digestive tract slower than a corn-soy diet. The first appearance of the marker in the faeces of birds fed the copra meal diet was 52 minutes later than for those fed the corn-soy diet. The movement in the digestive tract of the fine ground diets was slower than that of the coarse diets. The effect of pellet size on feed passage time was only evident in the copra meal based diet.
KAJIAN PENGEMBANGAN AGROFORESTRI UNTUK PENGELOLAAN DAERAH ALIRAN SUNGAI TORANDA, KECAMATAN PALOLO, KABUPATEN SIGI, PROPINSI SULAWESI TENGAH Danang Widjajanto; Rosmaniar Gailea
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The objectives of the research were to analyze dominant factors affecting community preference on agroforestry development; to determine the commodity priority on agroforestry development; to analyze the financial feasibility of cocoa monoculture and agroforestry farming system; to estimate soil erosion rate on different land use. The research was conducted at the Micro Watershed Model of Toranda, Palolo District, Sigi Regency, Central Sulawesi Province. Social-economic survey of the local community and soil erosion aimed to analyze community perception, financial feasibility of farming systems, and land conversion impact on land degradation caused by erosion. The results of the research showed that the dominant factors affected the community preference on agroforestry development were farming system capitals, financial profit, land suitability, erosion control and land rehabilitation, agribusiness partnership, and farmer institution role. The community preference on prioritiy commodity development was in order of (Tectona grandis), mahoni (Switenia macrophylla), nyatoh (Palaquium sp.), cempaka (Michelia campaka), Ebony (Diospyros celebica), candle nut (Aleurites mollucana), and avocado (Persea americana), respectively.  The cocoa monoculture and agroforestry farming systems are feasible to be developed. The benefit-cost ratio (BCR) and Internal Rate of Return (IRR) of cocoa monoculture farming systems are 3.01 and 0.35, respectively, and agroforestry farming systems of cocoa are 4.59 and 0.40, respectively. Finally, the soil erosion rate of cocoa monoculture farming systems at 9 % slope and cocoa agroforestry farming systems at 9 % and 38 % slopes are lower than the tolerable soil loss (TSL), whiles the soil erosion of cocoa monoculture farming systems at 38 % slope and bare soil at 5 % slope are higher than the tolerable soil loss (TSL)
ANALISIS DETERMINASI USAHA PERIKANAN TANGKAP NELAYAN DI KABUPATEN TOJO UNA-UNA Dafina Howara; Alimuddin Laapo
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The research was aimed to determine the priority development of catch fishery enterprise in Tojo Una-Una Regency based on the feasibility aspects of biology, techniques, economy and social.  The present study used secondary and primary data, which then analyzed using descriptive and Fisheries Effort Determination Method.  Results showed that Longline fisheries were predominant among the existing catch fisheries enterprises in Tojo Una-Una Regency.  The determination analysis resulted in that the first priority in fisheries development in Tojo Una-Una Regency should be for Longline fisheries followed by Purse seine Fisheries, Gillnet fisheries, and Bagan fisheries
TEKNOLOGI PENETASAN TELUR BURUNG MALEO (Macrocephalon maleo Sal. Muller 1846) SEBAGAI UPAYA KONSERVASI Mobius Tanari; Yohan Rusiyantono; Hafsah Hafsah
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The objective of the research was to determine the best hatching technique of maleo eggs from various measures such as as ex-situ, incubation time and hatch capacity of maleo bird using incubator. Thirty eggs were collected from the Lore Lindu National Park of Palu, Province of central Sulawesi according to an accidental sampling. The results showed that the mean weight of eggs from the National Lore Lindu Park was 208.80 ± 12.30 g, egg length was 102.85 ± 0.034 mm while egg width was 60.66 ± 0.02 mm.  The mean of incubator temperature of was 34.061 ± 0.19ºC with relative humidity of 70.87 ± 1.43 %. The percent of hatching eggs for incubation time of 53-55 days was 23.81 %, for that of 56-58 days was 23.81 %, for that of 59-61 days was 42.85 % and for that of 62-64 days was 9.53 %.  Thus, the average time for the eggs to hatch was 58.47 ± 2.88 days at the hatched rate of 70%. Based on such figures above, it can be concluded that the hatching technique using incubator could become the conservation strategy for maleo bird in Sulawesi particularly in Central Sulawesi Province
MULTIPLIKASI EMPAT VARIETAS KRISAN MELALUI TEKNIK KULTUR JARINGAN Zainuddin Basri
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 4 (2008)
Publisher : Universitas Tadulako

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Abstract

The aim of this experiment was to determine a suitable medium composition for multiplication of each chrysan variety tested.  This experiment used Split Plot Design.  The main plot was chrysant varieties consisted of four varieties, namely Yellow Fuji, White Fuji, Elen van Lengen and Tawn Talk.  Subplot was combination of auxin and BAP consisted of three combinations, namely 0.50 ppm NAA + 1.50 ppm BAP; 0.25 ppm IBA + 1.50 ppm BAP and 0.50 ppm IBA + 1.50 ppm BAP.  Therefore, there were 12 treatment combinations and each combination used three replications, with the total of 36 experimental units. Results of this experiment indicated for differences of varieties and media composition tested on the multiplication rate of chrysant.  Medium composition suitable for multiplication of chrysant varieties Yellow Fuji, Elen van Lengen and Tawn Talk was Murashige and Skoog basal medium supplemented with 0.25 ppm IBA and 1.50 ppm BAP, whilst for variety White Fuji was culture medium added with 0.50 ppm NAA and 1.50 ppm BAP, with the projection of number of plants produced on each variety at such media composition was 20.88; 13.77; 7.84 and 21.39 million plants per year

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