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All Journal JURNAL ILMU DAN TEKNOLOGI PETERNAKAN Paediatrica Indonesiana Jurnal Tanah dan Iklim
H. Siregar
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Agriculture, Biological Sciences & Forestry Computer Science & IT Health Professions Medicine & Pharmacology

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The Influences of Transaction Costs on Dairy Farming system in South Sulawesi Province S. N. Sirajuddin; H. Siregar; B. Juanda; A. H. Dharmawan
Jurnal Ilmu dan Teknologi Peternakan Vol. 1 No. 2 (2011)
Publisher : Fakultas Peternakan, Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (54.631 KB) | DOI: 10.20956/jitp.v1i2.672

Abstract

The research aimed to 1) identify transaction cost in small holder dairy farm operating either under partnership or independent system, 2) analyze the influence of transaction cost for dairy cattle business system, in South Sulawesi. The research was carried out from November 2009 to March 2010 at two different regions based on the farming system practiced, namely for partnership system in Sinjai Regency and for independent system in Enrekang Regency. Descriptive analysis was applied to identify the first aim of study and the logic model was adopted to analyze the second one. For the latter, 30 farmers for each system were deeply interviewed. The results of this research showed that (1) transaction cost of partnership system was lower than that of independent system, (2) transaction cost, particularly transportation cost, had significant influence on partnership system.
Results of Treatment of Hydrocephalus in Tembakau Deli Hospital, Medan, Indonesia Ahmad Dian Siregar; Z. Siregar; M. Sjabaroeddin Lubis; H. Siregar
Paediatrica Indonesiana Vol 37 No 1-2 (1997): January - February 1997
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi37.1-2.1997.31-6

Abstract

There were 9 eases of hydrocephalus that we followed up and reported in this paper. The youngest case was 3 'months. The type of hydrocephalus were: 5 cases with acquired, 2 cases with congenital and remaining cases with neoplastic hydrocephalus. Three pallets were treated medically and the others were using VP-shunt. Five patients using VP-shunt hawe functioning failure so that in three of them the shunt had to be removed and the others had to be combined with medical treatment. Only one patient revealed a benefit of shunting with clinical improvement. Two cases that VP-shunt had removed and continued with medical treatment. Three patients who were treated only by medical treatment showed good improvement. Because of the expensive for using VP-shunt and some evidence of its failure in most of our cases, we preferred to put medical treatment in the forefront before considered shunting in patients with hydrocephalus.
Applying Climate Information for Supporting Farming System of Food Crop ELZA SURMAINI; RIZALDI BOER; H. SIREGAR
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 24 (2006): Desember 2006
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n24.2006.%p

Abstract

The events of climate extreme that increase the crop yield uncertainty causing financial loss of farmers. To ensure economic profitability, farmers need to tailor their cropping pattern to the climate forecast. The study was conducted in Ciparay and Bojongsoang sub-District, the central crop production of Bandung District from March to August 2005. Research aimed to analyze climate information value based on farming system strategy for accruing farmer income. Farming system in climate extremeevents was determined by maximizing expected utility of wealth. Farming system in two sub-District was assessed by Rapid Rural Appraisal. Climate information value was the difference between income with conventional farming and income using farming system strategy. Result of the survey indicated that dominant cropping pattern in the study area was rice-rice-fallow. The second rice was vulnerable to drought particularly in extremeyears. Further analysis suggested that extreme climate events were mostly associated with ENSO (El-Niño Southern Oscillation) events. From farming system simulation model, it was found that in El-Niño years, to maximize income, farmers should planted all farm with maize. Planting non-rice crops can be done after April (early May), to get maximist income, they should plant all farm with soybean. Risk averter farmers might diversify their crops, i.e. by fallowing part of their lands and planting the remaining lands with maize and soybean. The use of climate information in El-Niño years will give higher economic benefit to farmers than in La-Niña years. The difference in economic benefit was determined by the proportion of land allocated for rice and nonrice crops. In El-Niño years, farmers who plant all their lands for second planting with rice crop will get loss due to significant decrease in rice yield, while those who plant part or all of their land with non-rice crops will gain benefit as they will get yield. Therefore, farmers who are willing to take risks by planting part or all of their land with non-rice crops in years which were forecasted to be El-Niño years will get higher income than farmers who are not willing to change their rice crops.
Soil and Climate Characterization and Its Suitability for Nucleus Smallholder Oil Palm at Sei Pagar, Kampar District, Riau Province I GEDE PUTU WIGENA; . SUDRADJAT; SANTUN R.P SITORUS; H. SIREGAR
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 30 (2009): Desember 2009
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n30.2009.%p

Abstract

The management of nucleus smallholder oil palm after conversion is mostly improper with the promoted management practice, consequently oil palm yield decreases due to decreasing of land quality. For this reason, the study has been done to characterize land condition, to assess land suitability for oil palm and to correlate soil properties against oil palm yield. The study was conducted at Sei Pagar, Kampar District, Riau Province from January 2007 to March 2008. Soil erosion was estimated using Universal Soil Loss Equation, while land suitability was processed using Land Evaluation Technical Guidance for Agriculture Commodities, and correlation of soil  properties to oil palm yield was calculated using Multiple Regression Analysis on SPSS Version 12.0. The study showed that climate conditions was favorable for oil palm growth and production, with annual rainfall 2,339 mm year-1, air temperature 26.04oC, and relative humidity 81.2%. Soil erosion varied from 1.322-3.423 t ha-1 year-1. The soils were dominated by Typic Haplosaprist and Terric Haplosaprist covering 8,641 ha with land suitability of S2-f (moderately suitable with nutrients retention as limitng factor). The other soil are Humic Dystrudepts and Typic Dystrudepts covering 587 ha with land suitability of S2-f,n (moderately suitable with nutrients retention and nutrient supply as limiting factors). The soil properties of Typic Haplosaprist and Terric Haplosaprist affected to oil palm yield are organic-C, nitrogen content, P2O5 content, and available-S. Meanwhile, on Humic Dystrudepts and Typic Dystrudepts, oil palm yield was affected by organic-C, nitrogen content, available-S, and aluminum content.
Co-Authors . Sudradjat A. H. Dharmawan Ahmad Dian Siregar B. Juanda Elza Surmaini I GEDE PUTU WIGENA M. Sjabaroeddin Lubis Rizaldi Boer S. N. Sirajuddin SANTUN R.P SITORUS Z. Siregar