Forita Dyah Arianti, Forita Dyah
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DAMPAK PENGELOLAAN LAHAN PERTANIAN TERHADAP HASIL SEDIMEN DI DAERAH ALIRAN SUNGAI GALEH KABUPATEN SEMARANG Arianti, Forita Dyah; Suratman, Suratman; Martono, Edhy; Suprayogi, Slamet
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 19, No 3 (2012)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1.84 KB)

Abstract

Perubahan jumlah manusia dan bentuk kegiatannya akan mengakibatkan perubahan dalam pengelolaan lahan. Sistem pengelolaan lahan pertanian pada daerah aliran sungai (DAS) Galeh umumnya masih belum memperhatikan kemampuan dan kesesuaian lahan. Masyarakat yang bermukim di DAS Galeh didominansi oleh petani. Dinamika pengel laan lahan pada sistem DAS akan mempengaruhi kondisi aliran sungai, yang menyebabkan terjadi perubaban debit aliran sungai sebagai keluaran DAS, sehingga mengakibatkan perubahan dalam kualitas lingkungan. Dampak yang sering terlihat adalah terjadinya kerusakan lahan karena meningkatnya erosi tanah dan sedimentasi. Kajian ini dilakukan dari bulan Pebruari sampai bulan Juli tahun 2010 di DAS Galeh, Kabupaten Semarang dengan tujuan untuk mengetahui hasil sedimen yang diakibatkan oleh pengelolaan lahan pertanian yang berbeda di daerah aliran sungai Galeh. Kajian dilakukan dengan cara menganalisis sampel-sampel sedimen melayang (suspended sediment) yang diambil dari outlets ketiga sungai utama yang bermuara ke Sungai Galeh. Parameter-parameter yang diukur untuk keperluan analisis hasil sedimen ini, yaitu konsentrasi sedirnen melayang Cs (mg/l), debit aliran air sungai Q (m3/detik) dan debit sedimen melayang Qs (gr/detik). Dari hasil kajian tampak bahwa terdapat debit aliran yang berpengaruh terbadap debit suspensi, di mana semakin besar debit aliran maka semakin besar debit suspensi. Pengelolaan lahan sawah memiliki debit aliran dan debit suspensi yang lebih tinggi dibanding pengelolaan lahan kebun dan lahan tegalan. Sedimen yang dihasilkan pada pengelolaan lahan sawah sebesar 14,593 ton/hari; pengelolaan lahan kebun sebesar 1,308 ton/hari, pengelolaan lahan tegalan sebesar 0,718 ton/hari.
LAJU PERTUMBUHAN IKAN KOAN (Ctenopharyngodon idela c.v) DENGAN BERBAGAI TINGKAT PEMBERIAN PAKAN ARIANTI, FORITA DYAH
Jurnal Litbang Provinsi Jawa Tengah Vol 3, No 3 (2005): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Penelitian dan Pengembangan Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/litbangjateng.v3i3.204

Abstract

The research aimed to know the effect of feeding amount daily of Koan Fish (Ctenopharyngodon idela c.v) sized  on 5-8   cm length, 2.5 g weight and strew population  on fish per I 000 cc of water. Floury  feeding contents  40.92 % of protein have been given twice  a day on 09.00  a.m and 17.00 p.m, with the same amount. Dosage adjustment  have been done once a week after weighing the fish. Box culture  used consist   of twelve  box (30 x 30 x 30 Cm) and strew in 20  fish  per box.  The experiment used is Randomized  Complete Design with  four(4) levels   of feeding( 3. 6. 9 and 12 % offish  weight)  as treatment in three replications. The data is then analyzed using Analysis of Variance (ANOVA) and Least Significant  Difference (LSD) for meant compirisons.   No dead fish incidence in  the experiment. The growth acceleration  of fish per day increased from 0.19  % to  1.23 % as the feeding level  increased  from 3 % - 12 % of fish weight per day. The maximum growth acceleration of fish per day was 1.23 % on 10.83  % offish  weight per day feeding level with  10.20 % of feeding efficiency. The optimum growth acceleration of 0.80  % have  been found on 5.74. % feeding level of fish weight per day, with  15.93 % of feeding efficiency
EVALUASI TOKSISITAS INSEKTISIDA TERHADAP IKAN NILA (Oreochromis niloticus) Arianti, Forita Dyah
Jurnal Litbang Provinsi Jawa Tengah Vol 2, No 3 (2004): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Penelitian dan Pengembangan Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/litbangjateng.v2i3.77

Abstract

Evaluation of acute toxicity of endosulfan insecticide in natural water environment  was conducted to know its potential  negative  effect to the Nile  (Oreochromis  nitoticusi. Using static toxicity test method, the acute toxicity of7 endosulfan concentration  levels were tested afterstandardized for 96 hours in the solution of water from river, pond and paddy field. Four replications  were implemented into those treatment and ground water was being  a control. The size of Nile used in the examination was 3-5  gr/tails in weight. Result of the examination was revealed by medium lethal concentration value LC50   -96  hours.  The result indicated  that insecticide of endosulfan in the  solution  of water from three kind environment had the high toxicity effection the Nile. The values of LC50    -96 hours were 6.00 mg/Lin   the river water, 4.61  mg/Lin   the pond water and4.51   mg/Lin   the paddy field water, respectively.   The difference of those values  was caused by the difference  of water quality such as total  hardess,  organic  matters, total  and suspended  solid,  and endosulfan  residue  in the water.
PEMANFAATAN LAHAN SEKITAR EMBUNG UNTUK KAJIAN BUDIDAYA BAWANG MERAH Arianti, Forita Dyah; Suprapto, Suprapto; Jauhari, Sodik; Supratman, Eman
Jurnal Litbang Provinsi Jawa Tengah Vol 10, No 1 (2012): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Penelitian dan Pengembangan Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/litbangjateng.v10i1.320

Abstract

Changes in precipitation patterns, increase in frequency of extreme climate events, and rise in temperatures and sea level were serious impacts of climate change faced by Indonesia. Agriculture is the most vulnerable sector influenced by of  the climate change. In the current condition, optimizinyon natural resource utilization is one of ways to recover economic condition of farmers. The use of reservoir on dry land aimed to conservation water resource and restrain erosion rate is the best  cheap and efficient solution. Then, water retained can be used for agriculture in dry season. This rain water harvesting is suitable for rainfed ecosystem which has uncertain intensity and distribution of rainfall. This study aimed to identify the production of onion cultivated in dry area around reservoirs, to give alternative farming around reservoir in order to increase income for farmer. The study was conducted in Getas village of Kradenan district, and Randublatung village of Randublatung district in Blora regency. The Result of this study indicated that the average onion production in Getas village and Randublatung village  was  10.33 t/ha  and 11.63 t/ha  with R/C ratio of 1.45 and 1.59, respectively. The farmers very strong motivation could support the successful implementation of new plant cultivation  although their  level of knowledge and experience also influenced the successful farming . Farmer perception on onion cultivation technology on land araund reservoir was very positive
KONTRIBUSI USAHA TANAMAN PERKEBUNAN BAGI PETANI MISKIN DI KABUPATEN TEMANGGUNG Hermawan, Agus; Sarjana, Sarjana; Choliq, Abdul; Arianti, Forita Dyah
Jurnal Litbang Provinsi Jawa Tengah Vol 4, No 2 (2006): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Penelitian dan Pengembangan Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/litbangjateng.v4i2.104

Abstract

Since last four years, area harvested  and production  of tobacco  in Temanggung  District tended to decrease due to the low  price of tobacco.  It forces farmers to search alternative  commodities. Survey to find out the role of estate crops for poor farmers was carried  out in September-October 2004 inTernanggung District. The assessment   involved  91 farmers  who coming from three sub districts, i.e.  Pringsurat  Sub District  (medium  land), Kaloran and Kledung  Sub Districts  (both are high land). Results showed that in general agricultural sector was an important as a source of income, in which contributed 30,6 % and 45 % for medium and high land respectively. For high land farmers, estate crops contributed  the highest percentage (14%)  followed by food crops (12%). The dominant estate crops were coffee, tobacco, coconut, clove, and cacao. Tobacco showed the highest revenue (Rp. 2,505 millions/household),   even though also needed the highest production cost (Rp.  1,586 millions/household).  In medium  land, estate crops were in the fourth placed (5%) after livestock (9%), forestry  (8%), and horticulture crops (6%).  Dominant  commodities were coffee, coconut, and clove. Marketing system was not different  in both areas. Aside of coconut, estate crops was firstlyprocessed before being sold in village and sub district markets,  in which was paid in cash. For tobacco commodity, traders were the source of price information,  while for other commodities were neighbours/other   farmers. Based on the analysis, efficiency could be increased through scaling up the farm size. Fanning  consolidation   was promising  to be implemented