Jurnal Ilmu Pertanian Indonesia
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Organ Pencernaan dan Status Escherichia coli Usus Puyuh yang Diberi Tepung Defatted Maggot (Hermetia illucens) sebagai Pengganti Meat Bone Meal
Get PDFThis study was designed to evaluate the effect of substitution of Meat Bone Meal (MBM) with defatted maggot (Hermetia illucens) meal (DMM) on weight and length of digestive organs and the status of Escherichia coli in quail intestine. This study used 285 female quails aged six weeks with an average weight of 153.3±3.7 g. This experiment used Completely Randomized Design with three treatments, five replications, and each replication consisteds of 19 quails. The treatments were P1 = 0% DMM in diet, P2 = 3.1% TDM in diet (to substitute 50% of MBM protein), and P3 = 6.18% TDM in diet (to substitute 100% of MBM protein). The measurement of the digestive organs was performed by weighing each of the digestive organ and compared with the live weight multiplied by 100%. The measurement of the relative length was calculated by comparing the length of the organs by live weight and multiplied by 100%. The calculation of the concentration of E. coli used the method of dilution according to Waluyo (2005). The results showed that there was no significant effect on the percentage and the relative length of digestive organs. Defatted maggot meal has the activity as a natural antimicrobial that can decrease the Escherichia coli in quail intestine by 99.99% along with the increase in defatted maggot meal to 6.18% in diet. It can be concluded that protein from defatted maggot (Hermetia illucens) meal can be used up to 6.18% as an alternative to replace MBM without alteration in health status of the quail
Interpretasi Visual dan Digital untuk Klasifikasi Tutupan Lahan di Kabupaten Kuningan, Jawa Barat
Get PDFLand cover information are needed to support decision making process on natural resource management. Remote sensing has been provideingr a huge distribution of geographical land cover information on various spatial scales. Landsat 8 OLI can be used on various applications and researches, including on land cover classification. Parameters used on land cover identification can be extracted from Landsat 8 OLI (Operational Land Imager). The research tried to explore land cover classification in Kuningan District by using two different classification methods, visual and digital maximum likelihood using Landsat 8 OLI acquired on August 5th2014. The main objectives of the research were to develop land cover map and assess the result accuracy on both different methods used. Confusion matrix using Overall accuracy and Kappa value was used as a reference on defining the accuracy. As a result, visual interpretation identified 10 land cover classes with Overall accuracy of 94.02% and Kappa value of 0.93. While digital maximum likelihood identified 10 land cover classes with Overall accuracy of 93.17% and Kappa value of 0.92
Evaluasi Risiko Iklim Wilayah Tembakau di Kabupaten Temanggung
Get PDFTobacco is one of the important commodities that becomes an income source for farmers as well as Original Local Government Revenue of Temanggung Districts. Unfortunately, in the last few decades the failure of tobacco harvest due to climate variability was often occurred. The decrease in both quality and quantity due to rainfall irregularities has caused tobacco farmers get decrease in income. This study aims to find out the climate profile besides impact and risk analysis of climate on tobacco in Temanggung District. Methods used in this study were Polygon Thiessen to find out the rainfall patterns in Temanggung District, and Probability Density Function to find out the conditions of rainfall change in each sub-district. Furthermore, the relationship between rainfall anomaly and temperature with tobacco productivity was analyzed using linear regression and t-test methods. The rainfall influence showed a negative correlation with tobacco productivity with coeffiicients of correlation and determination of r = -0.38 and R2 = 0.14, respectively, while the average temperature and maximum monthly temperature had a negative and significant effect on tobacco productivity. Rainfall anomaly in all sub-districts of Temanggung District showed a negative correlation with and affected tobacco productivity during June-September that was the phase of tobacco harvest. The effect of rainfall and temperature on tobacco productivity in Temanggung District needs to be a concern for local governments and tobacco farmers in efforts for adaptation and mitigation processes
Distribusi Ukuran, Pola Pertumbuhan, dan Faktor Kondisi Ikan Endemik Opudi (Telmatherina prognatha) di Danau Matano, Sulawesi Selatan
Get PDFOpudi fish (Telmatherina prognatha) is an endemic fish that live in the Lake Matano. Growth pattern of Telmatherina prognatha is very important to be studied for species conservation and management effort. This study aimed to analyze size distribution, growth pattern and condition factors of the fish as a basic information for fish resources management at Lake Matano. The study was conducted from March to August 2018 on six sampling locations. The fish sampling was carried out using multifilament nets with 0.5 inches in mesh size (30 m length and 2 m width) in the lake. The caught fishes were measured for total length and weight for growth analysis. The total of fish (n=853 individuals) consisted of male (483 individuals) and female (370 individuals). Total length (TL) of the fish ranged between 36.46-64.09 mm (mean 51.73±4,74mm) for male and 32.93-66.20 mm (mean 49.81±5.31 mm) for female fish. The growth patterns (length-weight relationships) of male and female fish were W=0.0004L2,5995 and W=0.0006L2,4875, indicating negative allometric growth patterns, respectively. Range condition factors in average were various and 0.9864±0.2084 in average for male and 1.0121±0.1571 for female, respectively, with quite high values on June 2018
Efektivitas Jalur Hijau Jalan dalam Mengurangi Polutan Gas CO
Get PDFAir pollution is a serious problem that increase in almost all countries, including in developed countries. Increasing in air pollution is generally caused by human activity such as transportation. One of dangerous pollutant substances generated by motor vehicles is CO (carbon monoxide) gas. One effort in controlling air pollution is the utilization of green open space in the roadside area. The purpose of this study is to determine the distribution of CO in road side vegetation area and open area. The research was conducted in roadside green belt of Cikampek Highway. Air sampling was conducted to measure the concentration of CO in the distances of 0, 10, and 30 m from green belt area. Concentration of CO was analyzed using a spectrophotometry method. The result showed that vegetation and distance factors significantly affected the distribution of CO gas concentrations.The existance green belt area reduced the distribution of CO pollutant in the vicinity of Cikampek highway. As a result, the plot of vegetation area can effectively reduce the concentration of CO gas by 8.5% compare to open plot area. In this study, the plot of vegetation area at10 and 30 m distances decreased CO concentrations about 14.5 and 23.55%, respectively. In the open plot area, the 10 and 30 m distances from the open plot area decreased CO concentrations by 7.17 and 15.05%, respectively
Faktor-Faktor yang Memengaruhi Tingkat Pendapatan Petani Karet di Desa Sako Suban, Kecamatan Batang Hari Leko, Sumatera Selatan
Get PDFRevenue is an important thing for farmers, because with the income the farmers can meet the needs of the household. The higher the income then the welfare of farmers will be improved. The purpose of this research is to identify the characteristics of farmers, analyze farmers\u27 income and factors affecting the income level of rubber farmers in Sako Suban Village. The selection of villages was done purposively but the selection of respondents was conducted by accidental sampling. The data used in the primary data were collected by using interview method. Quantitative data processing used linear regression by using a significant level of 10%. The results of the research showed that the education of the farmers was low, the average age of the farmers was 46 years, and the majority of the farmers work as rubber farmers. Rubber contributed 63% to the total revenue and the rest comes from company laborers and loggers and average farmer incomes was IDR733.389/month. Variables that affect farmers\u27 income are rubber prices, farmers groups, and farmers experience in rubber gardening. The variables that have no significant effect on farmers\u27 income are the education of farmers, the labor in the family, and the land area
Persepsi Petani terhadap Dukungan Pemerintah dalam Penerapan Sistem Pertanian Berkelanjutan
Get PDFOne of the factors that hinder the adoption of sustainable agriculture technology innovation is the farmers’ perception on the innovation, which is influenced by internal and external factors. One of them is the limited availabilities of infra structure and facilities to support sustainable agricultural production, which are external factors. This research was aimed to analyz the farmers’ perception on the government support in implementing sustainable agriculture system, to find out factors that are related to the farmers’ perception and to produce recommendations that support sustainable agriculture system to the government in the context of sustainable agriculture mainstreaming. This research was conducted in four different areas in Bogor municipality and regency, namely Cimahpar District, Situgede District, Benteng Village, and Purwasari Village. Survey method was used on 201 farmers selected purposively. The results showed that farmers’ perception was negative on government support in implementing sustainable agriculture system. Most of the farmers considered that government provided less support to the implementation of sustainable agriculture system (55.7%). Especially, in providing enough capital (65.7%), insurance on farmers’ business market (58.7%), insurance on the price of business production facilities (51.7%), and insurance on the market (sold with reasonable price) (50.2%). However, factors that were related to the farmers’ perception were formal education (rs = 0.150, P<0.05) and land area (rs = -0.154, P<0.05). Therefore, it is important for the government to provide the farmers’ needs, such as suficient capital, guarantee on market price of farm product, price guarantee for farming production facilities, and market continuity to support sustainable business activities for the continuity of the farmers’ business activity application
Keragaman Morfologi Daun Padi Lokal Indonesia dan Korelasinya dengan Ketahanan Penyakit Hawar Daun Bakteri
Get PDFBacterial leaf blight (BLB) is one of the major diseases of rice plants mainly in irrigated rice caused by pathogenic bacteria Xanthomonas oryzae pv. oryzae (Xoo). Leaf morphology becomes an interesting character to be investigated due to its relationship with the intensity of BLB disease, because the leaf is the part of plant which is infected by the bacteria. The purpose of this research was to obtain information on the variability of leaf morphology and its correlation with BLB diseases, to support plant breeding program of BLB disease-resistant rice varieties. A total of 25 local rice accessions were characterized phenotypically. Leaf morphological characters were examined without replication, while in Xoo resistance (pathotype IV) test was done by using randomized block design with three replications. Characterization on leaf morphology indicated that all local rice accessions had green collar, transparent auricle color, white ligule color, and 2-cleft ligule shape. In four weeks after inoculation, four accessions (Ketan Lomah Hitam, Bumbuy Inih, Gonggoi, and Waren) showed disease severity percentages of BLB diseases on the range between 13-16%. These observations indicated that these accessions had slightly sussceptible response to BLB diseases wich were better than the other accessions. Leaf-surface morphology was positively correlated with BLB disease. The four accessions were feathery or slightly hairy with a short-sized leaf. The results of this research could be used as a reference for developing of BLB resistance rice varieties
Skreening Alga Hijau Halimeda opuntia (Linnaeus) sebagai Antioksidan dari Pesisir Aceh Barat
Get PDFH. opuntia is one of the green algae that distributes sufficiently dominant at the coastal of West Aceh. This research aims to screen the green algae H. opuntia that is potentia as an antioxidant agent. Extraction method in this research used mono maceration. The solvents that are used including ethanol (polar), ethyl acetate (semi-polar), and n-hexane (non-polar). With those three solvents it was obtained three crude extracts including ethanol crude extract, ethyl acetate crude extract, and n-hexane crude extract. Subsequently, the crude extracts were used to conduct the assay including phytochemical assay and the antioxidant activity with DPPH method. The results of phytochemical assay showed that ethanol crude extract of H. opuntia was detected to have active compounds including alkaloids, flavonoid, phenol, tannin, and steroids whereas ethyl acetate extract of H. opuntia was detected to contain phenol compound. Total phenol content of ethanolic extract of H. opuntia = 2460.25 mg GAE/g and ethyl acetate extract = 972.68 mg GAE/g. Antioxidant activity of ethanolic extract has IC50 value = 143.63 mg/L whereas ethyl acetate extract has IC50 value = 75.51 mg/L with Vitamin C as a positive control. This results show that extract of H. opuntia possesses a vital potency as an antioxidant agent that give value added in pharmacy industries
Penilaian Sesbania sesban sebagai Spesies yang Diduga Invasif di Daerah Perkotaan Sangatta, Kalimantan Timur
Get PDFSangatta as the capital of East Kutai Regency is a rapidly growing urban area. The rapid growth and development of Sangatta resulted in the increase of open space. For this reason, the government and local communities tried to reforest the residential areas by planting many plant species. However, generally the chosen species were not the local ones and tended to be chosen based on the easiness of cultivation and aesthetic aspects. The popular species is janti (Sesbania sesban), which can be called as an alien species because of the lacks of records and information about its existence. The alien species spreading freely and uncontrolled could be potentially invasive. To prove it, an assessment needed to be held. One of procedure that can be used is assessment protocol issued by the nature serve organization, which determines the presence of an invasive type or species based on I-rank, which consists of four assessment categories, namely ecological impact, distribution status and abundance, distribution trends and abundance, and management difficulties. The research result showed that the presence status of Janti was invasive in the middle rank