Kandungan Logam Berat Cu Dalam Ikan Bandeng, Studi Kasus Di Tambak Wilayah Tapak Semarang

ABSTRACT The declining of river environmental quality due to pollution would impact on inland pond environment in the coastal areas. In order that milkfish culture in the coastal areas could produce healthy fish the water and the clean unpolluted inland ponds are required. The quality of the environment impacts and determines the quality of the cultured fish. The currect study aimed to determine the content of heavy metal Cu in the body of milkfish cultured in the inland ponds along Tapak area, Semarang. By knowing the content of Cu in the pond water, the feasibility of the inland ponds for the culture of milkfish may be determined. Result showed that the content of Cu in the milkfish body ranged from <0,01 to 3.28 mg/kg, whereas the content of Cu in the pond water was <0,01 mg/l (undetected). This means that Cu content in the body of milkfish and in the pond water in Tapak Area Semarang was still lower than the threshold value. Milkfish cultured in Tapak Area is considered consumable. Inland ponds in Tapak Area is feasible for milkfish culture. Keywords: Cu, heavy metal, milkfish inland pond, Tapak Are

Improving Non-wheat Flour Quality As a Form of Local Food Conservation

The growth rate of Indonesian population increases the community’s dependence on wheat flour which is wholly made from imported wheat. Local carbohydrate sources that can function strategically as food reserves are Indonesian traditional tubers and roots.Tubersandrootsalsocontainsomebioactivecompoundsthathavephysiological effects as antioxidants. The bioactive compounds found in these inferior local tubers are dioscorin, diosgenin, and phenol. These three types of bioactive compounds have been shown to have the ability to ward off free radicals. This study aims to developtuberproductsandincreaseaddedvaluethroughtheutilizationofappropriate technology and diversification of processed products. The study used sixteen types of traditional Indonesian tubers. The method used is to reduce the size of the tubers usingcrystallizationmethodandutilizetheblowersystemtocreatethewindfordrying system. The blowing facilitates the process of reducing the water content to improve the durability of the flour. The research applied the mixed method approach. The study was carried out in the laboratory. Data were analyzed using proximate analysis to determine moisture content, ash content, carbohydrate content, protein content and fat content. The results showed that the chemical content of Suweg flour with pregelatinization method at 70 ∘C for 60 min had the highest water, ash, and fiber content at 5.79%, 2.49%, and 43.73%, respectively; while the highest carbohydrate content obtained by heating for 10 minutes at 25.80%. In conclusion, traditional tuber flours are sufficient for the use of raw materials for the food industry. &nbsp; &nbsp; Keywords: traditional Indonesian tubers, non-wheat flours, local foo

Grafting of Tomato with Eggplant Rootstock at Penyabangan Village Payangan Subdistrict of Gianyar Bali

Grafting on tomatoes is performed to obtain tomato plants that are resistant to bacterial wilt, waterlogging resistant, resistant to fusarium wilt and nematodes. Bacterial wilt caused by Ralstonia solanacearum causes the tomatoes grown in the rainy season to wilt and die. These bacteria live in the soil and invade plants through roots. To overcome this disease, grafting was carried out by using resistant eggplant as rootstock. This method is expected to reduce the attack of bacterial wilt diseases on tomato plants. The study was conducted in the village of Penyabangan Payangan Gianyar in FY 2014. This area was located at the plateau of AEZ wet climate. The experimental design used was a randomized block design (RBD) with two treatments and 10 replications. Materials used were tomato plants that have been joined with eggplant rootstock (grafted) and tomato plants without root stock (non-grafted) for comparison. The varieties used were varieties F1 Marta. In field applications, the scion was prevented from touching the ground while the rootstock was fully embedded into the ground. Based on the plant height, there was a  slower growth of the grafted tomato plants compared with that of non-grafted one in the early stages of growth but became normal in generative phase. It was also found that the yield of the grafted tomato was lower (2.54 kg. tree-1) than that of the non-grafted  one (3.19 kg.tree-1). Keywords: grafting; tomatoes; eggplant; stem rot;  bacterial wilt (alphabetic in order)

Performance of New Rice Variety (Inpari 24) at Subak Amerta Nadi Kerta Village Payangan Sub-district of Gianyar Bali

Model development of rice farming in the production centre area at Payangan Sub-district of Gianyar is designed to introduce a model called rice field laboratory. The principle of the model used is "build, operate and transfer (BOT), refering to a the disseminated model of innovation which is a  large scale pilot model at the grass root level. The study introduced new varieties “Inpari”24 as an attempt to replace the old varieties that has lower productivity. Cultivation technology by implementing  Legowo System 2: 1. The aim of this study was to determine the performance of new variety Inpari 24 in the cropping system in Subak Amerta Nadi, Kerta Village, Sub-district of Payangan Gianyar in the growing season 2014. This study used a randomized block design with two treatments of different cropping systems, namely: Legowo 2: 1 (40 x 20 x 10 cm) and tiles (20 x 20 cm), repeated 10 times. Variables observed in this study were: plant height, number of tillers, panicle length, number of grains per panicle and empty grains and yield per hectare. Data were analysed through analysis of variance, then followed by LSD test at 5% level. It was concluded that: (a) cropping systems significantly affected all variables of rice production, (b) the highest productivity was Legowo System which was 7.50 tons / ha, increased by 26.68% compared to tiles cropping system (the method used by farmers).Keywords: Inpari 24; planting system; ric

An Analysis on Business Feasibility and Farmers Income in Semarang of Central Java

Agricultural sector plays an important role in absorbing employments and providing contributions to the Gross Regional Domestic Product of Semarang. The purpose of this research was to figure out the income earned by the farmers as well as farming feasibility. The research object included four agricultural sub-sectors: covering crops, horticultural plants, industrial raw material plants, and cattle breeding. This research employs a purposive sampling method. The research resulted that the average land areas owned by the farmers of crops, horticultural plants and industrial raw material plants was 3,098 square meters, while the average ownership of dairy cattle, beef cattle, broilers, and laying hens was respectively by 9 and 11 cows as well as 7,970 and 1,900 chickens. Moreover, the research showed that the average farmers’ income of crops, industrial raw material plants, horticultural plants, and cattle breeders was respectively by Rp. 6,163,750/year, Rp. 10,886,610/year, Rp. 17,928,300/year, and Rp.71,346,250/year which were considered lower than those of formal sector workers with the Regional Minimum Wage of Rp. 2,315,000/month. However, different conditions were found for the breeders of laying hens and broilers whose monthly income were respectively by Rp. 2,773,878 per thousand broilers and Rp. 52,528,947 per thousand hens. To equally earn the income to meet the Regional Minimum Wage, the farmers of crops, industrial raw material plants, and horticultural plants should at least have the land areas around 14,500 m2 , 7.600 m2 , and 3,600 m2 . &nbsp; &nbsp; Keywords: Income, Business Scale, Farmer, Semaran

PERANAN MANGROVE SEBAGAI BIOFILTER PENCEMARAN AIR WILAYAH TAMBAK BANDENG TAPAK, SEMARANG (Role of Mangrove as Water Pollution Biofilter in Milkfish Pond, Tapak, Semarang)

ABSTRAKMangrove yang tumbuh di ujung sungai besar berperan sebagai penampung terakhir bagi limbah dari industri di perkotaan dan perkampungan hulu yang terbawa aliran sungai. Area hutan mangrove mempunyai kemampuan mengakumulasi logam berat yang terdapat dalam ekosistem tempat tumbuhnya. Tujuan yang hendak dicapai dari  penelitian ini adalah mengkaji peranan mangrove sebagai biofilter pencemaran air dan  mengetahui jenis mangrove yang terbaik berperan sebagai biofilter pencemaran air di di lingkungan tambak bandeng Tapak Kota Semarang. Desain yang digunakan dalam penelitian ini adalah deskriptif eksploratif. Berdasarkan hasil penelitian tentang akumulasi logam berat Cu antara air dan sedimen tambak, diperoleh hasil telah terjadi akumulasi Cu dengan Faktor Konsentrasi antara 43-400.  Pada stasiun 3 dan 4 terdapat akumulasi Cu dengan nilai Faktor Konsentrasi 3 dan 0,3. Hal ini menunjukkan akumulasi Cu dari sedimen ke akar mangrove relatif masih kecil. Perbedaan akumulasi dari tiap stasiun penelitian yang diamati menunjukkan adanya perbedaan jenis mangrove yang tumbuh pada masing-masing stasiun penelitian. Mangrove yang berada di lingkungan tambak bandeng wilayah Tapak Kota Semarang disimpulkan dapat berperan sebagai biofilter pencemaran air yang ada di perairan tersebut. Mangrove dari jenis Avicennia marina mempunyai peranan yang lebih baik dari jenis Rhizophora sp sebagai biofilter pencemaran air di lingkungan tambak bandeng Tapak Kota Semarang. ABSTRACTMangroves,  that is growing at the end of a great river, has a role as the last place for the waste water from urban and domestic industry at the upstream that were carried by the flow of river. Mangrove area  has  ability to accumulate a heavy metals  which is contained in it. The  goals  from this research is to assess role of mangrove as biofilter of water pollution and to find out the best species of mangrove as biofilter of water pollution in milkifish pond in Tapak, Semarang. This research used exploratory descriptive  design. The result showed that the accumulation of  Cu in the location has concentration factor of 43-400.  Whereas at station 3 and 4 there is accumulation of Cu with concentration factor value 3 and 0.3. It was  showed that accumulation of  Cu  from sediment to mangrove roots relatively small. The big difference in the accumulation from each station is due to differences of mangrove species that is growing at each research station. The conclution of this research  is; mangrove are located in milkfish pond can be role as biofilter of existing water pollution in these teritory. The mangrove species of Avicennia marina having a better role as biofilter of water pollution in milkfish pond in Tapak Semarang than Rhizophora sp

PEMANFAATAN INDIGO SEBAGAI PEWARNA ALAMI RAMAH LINGKUNGAN BAGI PENGRAJIN BATIK ZIE

Utilization of Indigo as Eco-Friendly Natural Dyes for Zie Batik CraftsmenAbstract. Batik is a cultural identity of Indonesian society which currently developing dynamically. The use of natural dyes by utilizing plants is being developed by several batik artisans. This service activity aims to facilitate partners to be able to utilize indigo as natural dyes of environmentally friendly batik and be able to compete in the international market. The activities are conducted with Batik Zie as partners in Kampung Malon, Gunungpati District, Semarang, by facilitating partners to negotiate and collaborate with suppliers of natural dye raw materials, conduct training and mentoring indigo pasta making. Besides that, it also promotes products through exhibitions and documentation of activities. While the use of Indigofera Tinctoria L extract, Crusia Strobilantes could produce light blue, turquoise blue and dark blue. The collaboration with UKM ISUGA makes the availability of indigo pasta as a natural dye became well maintained. While indigo has a role in staining light blue to dark blue natural dyes. Utilization of natural dyes is eco-friendly and does not harm/pollute the environment. Partner participation in 3 exhibitions, makes the batik products could compete in the international market.Keywords: Natural dye, batik, indigo, eco-friendlyAbstrak. Batik merupakan identitas budaya masyarakat Indonesia saat ini berkembang secara dinamis. Penggunaan pewarna alami dengan memanfaatkan tanaman sedang dikembangkan oleh beberapa pengrajin batik. Kegiatan ini bertujuan untuk  memfasilitasi mitra agar mampu memanfaatkan indigo sebagai pewarna alami batik ramah lingkungan dan mampu bersaing di pasar internasional. Kegiatan dilakukan dengan Mitra Batik Zie yang berada di Kampung Malon, Kecamatan Gunungpati, Semarang, dengan memfasilitasi mitra untuk negosiasi dan kerjasama dengan suplier penyedia bahan baku pewarna alami, melakukan pelatihan dan pendampingan pembuatan pasta indigo. Di samping itu juga mempromosikan produk melalui pameran serta melakukan dokumentasi kegiatan. Hasil kegiatan menunjukkan bahwa penggunaan ekstraksi indigo (Indigofera tinctoria L, strobilantes crusia) dapat menghasilkan warna biru muda, biru kehijauan serta biru tua. Adanya kerjasama dengan UKM ISUGA, menjadikan ketersediaan pasta indigo sebagai pewarna alami selalu terjaga. Sedangkan indigo mempunyai peran dalam pewarnaan biru muda hingga biru tua. Penggunaan pewarna alami tersebut bersifat ramah lingkungan dan tidak mencemari lingkungan. Keikutsertaan mitra dalam 3  pameran, menjadikan produk batik mitra turut bersaing di pasar internasional.Kata kunci. Pewarna alami, batik, indigo, ramah lingkunga

Improvement of Nutritional Quality of Tuber Flour as Local Food Resource

Tuber plants are sources of carbohydrates which could be used as strategic national food reserves. Beside high carbohydrates, tubers also contain a number of bioactive compounds which have physiological effects as antioxidants. This research aimed to develop tuber flour products and increase additional value through the use of appropriate technology and diversification of processed products. Research samples were 16 tuber species. The method was crystallisation by utilization of blower system to accelerate the process of water content reduction. The data were analyzed using proximat analysis. Water content was 5.61-15%, ash content was 0.4-5.31%, carbohydrate content was 82-88%, protein content was 0.67-6.32%, and fat content was 1-7%. The result showed that chemical content of Suweg flour with pragelatinization method at 70ºC for 60 minutes had the highest water, ash, and fiber content which were 5.79%, 2.49%, and 43.73%, respectively. Meanwhile, the highest carbohydrate content obtained by heating for 10 minutes was 25.80%. Tubers flour is worthy to be used as raw materials for food industry