Groundwater Salinity Distribution in Sub-District Kedung, District Jepara

The groundwater salinity in Kedung Sub-district, near the coastal area, is the result of the salt water that comes into the aquifers and the salt water seepage from the surface. The broad groundwater salinity is because of the recent land condition that is resulted from the deposition in the ocean. The nature of the groundwater in-Sub-distric from all aquifers consists of 14% saline groundwater, 48% brackish groundwater and 38% fresh water. The number of community that has brackish until saline ground water property is 19.202 people, so that the domestic water need for the community is 1.344.378 liters/day. Such environmental condition makes the residents make some adaptation. The adaptation of the land use aspect is by making the western region as a fishponds region and the eastern one as a rice fields region. Adaptation in community activities is to fulfill the needs by working as farmers (on the rice fields, fish ponds or salt ponds) or as the fishermen. Adaptation is also made to minimize the threat of disasters, such as the manufacture of levees, weirs or dams and diversions to prevent the spread of tidal flooding

Desain Irigasi Tetes Bawah Permukaan Berdasarkan Konduktivitas Hidraulik Tanah untuk Tanaman Hortikultura

Subsurface drip irrigation is designed base on the soil hydraulic conductivity in order to water drip out from emitter not overflow to soil surface so that application of water irrigation more efficent.   The objectives of the research were (1) To compose matematic equation for determining diameter of hole emitter sub surface drip irrigation base on soil hydraulic conductivity so that emitter discharge not more than soil hydraulic conductivity; (2) To constract the physic model of subsurface drip irrigation conform with the design in this research; (3) To test performances design result of the subsurface drip irrigation at the research station with plant indicator is chilly with 4, 6, 8, and 10 days irrigation interval. The result of the research showed that the diameter of hole emitter of subsurface drip irrigation base on the equation /2.4/ for clay, sandy loam, and sand textures are 3,3; 4,7; and 6,6 mm respectively without water overflow from hole emiter to the soil surface.The irrigation interval of 6 days by using subsurface drip irrigation until day old of chilly 50 days after planting gave production 0,561 kg plant-1 and economical benefit per unit of water.  Water productivity of chilly with 6 days  irrigation interval is very high of 6.56 kg m-3 of water.    Keywords: subsurface drip irrigation, hole diameter emitter, chilly, irrigation interval

Pengaruh Interval Waktu Pemberian Air terhadap Produktivitas Tanaman Tomat Di Lahan kering Dataran Rendah pada Musim Kemarau

The research was conducted in research station Polytechnic of Lampung, started the April from November 2009. The experiment was conducted in randomized completely block design with 3 replications. The treatments irrigation interval water gift time consist of 4, 6, 8, and 10 days. The parameters that were (1) tall plants, (2) fruit total formed, (3) production, (4) irrigation water gift total, and (5) water productivity. The data obtained to be analysed use anova, with BNT test for the mean of treatments value with level 0.05. The result of research indicate that are irrigation interval of 8 days in tomato plants cultivar Mutiara at dry season of lowland gave economical benefit per unit of water and can be conserved 47% irrigation water with production 1.28 kg.plants-1 (28.33 ton.ha-1). Keywords : Irrigation interval, tomato production, dry season, lowlan

Influencing Factors on the Actual Usage of Mobile Phone Banking in the Shari'ah Banks: A Survey in Palembang City, Indonesia

This research was developed from a study conducted by Talukder, Quazi and Sathye in 2014 whom were tried to discover mobile phone banking usage behavior of banks customers in Canberra, Australia. A research model was set to find the relationship between independent and dependent variables. Independent variables consisted of five variables, namely, Perceived Usefulness (PU), Perceived Ease of Use (PEU), Trust (T), Social Influence (SI) and System Quality (SQ), whilst the dependent variable is Actual Usage (AU) of Mobile banking in the Shari’ah banks. Thus, making this research a multiple regression analysis. A survey was conducted by distributing questionnaires to gather primary data from 126 respondents of Shari’ah banks customers in Palembang City, South Sumatra Province, Indonesia. The findings show evidence that there are positive and significant relationship between all independent variables and the dependent variable. As such variable with the highest impact is PEU (30,3%) whilst the lowest is SI (18%) meaning that perceived ease of use amongst customers of Shari’ah banks in Palembang City gave the highest impact on their actual usage of mobile banking, compared to social influence, which is lower. Therefore, it is recommended that Shari’ah banks in this city should consider to put more attention in to providing their customers with a mobile banking application which is easy to use as well as keeping it up to date with the needs of the customers. As an implication to the providers, financial institutions can capitalize on the finding of this research to enhance the ease of use of their application on mobile banking

Persebaran Salinitas Airtanah Di Kecamatan Kedung, Kabupaten Jepara, Provinsi Jawa Tengah

Salinitas airtanah di Kecamatan Kedung di dekat pantai disebabkan oleh air laut yang menerobos masuk ke akuifer dan rembesan air asin dari permukaan. Salinitas airtanah yang sangat luas disebabkan daratan yang sekarang merupakan hasil pengendapan di lautan . Sifat airtanah di Kedung dari seluruh akuifer adalah 14 % berupa airtanah asain, airtanah payau 48 % dan air tawar 38%. Masyarakat yang memiliki sifat airtanah bersifat payau hingga asin sebanyak 19202 jiwa, sehingga kebutuhan air domestik mereka sebanyak 1.344.378 liter/hari. Kondisi lingkungan yang demikian menjadikan penduduk disana melakukan adaptasi. Wujud adaptasi dari aspek pemanfaatan lahan adalah dengan menjadikan kawasan barat sebagai tambak dan kawasan timur sebagai sawah. Adaptasi dalam kegiatan masyarakat untuk memenuhi kebutuhan yaitu dengan bekerja sebagai petani (sawah, tambak ikan atau tambak garam) ataupun nelayan. Adaptasi juga dilakukan untuk meminimalisir ancaman bencana, seperti pembuatan tanggul, bendung ataupun bendungan dan sudetan untuk mencegah meluasnya banjir rob

Evaluasi Daya Hasil Lima Varietas Cabai (Capsicum annuum L.) dengan Penggunaan Mulsa Plastik dan Paranet Saat Transplanting

Demand for chili at certain times is quite high, but it is not always balanced with the amount of production. This resulted in the price of chili jumping sharply. This study aims to (1) evaluate the yield of five chili varieties’s power using mulch and without mulch, (2) to find out the growth power of five chili varieties after transplanting using 40% paranet and withoutparanet. The study was arranged in factorial (3 factors) with a randomized block design environment. As the first factor are five chili varieties, namely Columbus, Arimbi, Lado, Ferosa, TM 999. The second factor is the use of plastic mulch, which is without mulch and using mulch. The third factor is the use of paranet when transplanting, i.e. without paranet and using paranet. The treatment combination was repeated 3 times. The results showed the highest varieties of fruit weights per plant were Columbus (622 g), followed by Arimbi (391 g), Lado (324 g), TM 999 (126 g), and Ferosa (65 g). The use of 40% paranet when transplanting on beds using black silver plastic mulch can reduce seedling mortality in the field to 46%. The use of black silver and paranet plastic mulch when transplanting can provide the highest fruit weight. Keywords: mulch, paranet, transplanting, yiel

Pengaruh Spektrum Cahaya dan Lama Perendaman Benih Terhadap Pertumbuhan dan Hasil Microgreen Bunga Matahari (Helianthus annuus L.)

Sunflowers are plants from the Asteraceae family which are popular as ornamental plants, as well as consumed in the form of microgreens. The problem with microgreen cultivation is that it requires light as a substitute for sunlight and is difficult to imbibition because it has a hard skin. The aims of this study were (1) to obtain the best light spectrum color on the growth and yield of sunflower microgreens, (2) to obtain the best soaking time for sunflower microgreen growth and yields, (3) to obtain the best interaction of light spectrum treatments and soaking time seed. The research method was arranged using a split plot experimental design in a randomized block design with 3 repetitions. The main plot are the light spectrum and the sub plots are the soaking time of the seeds. Variables observed: germination time, germination percentage, germination rate, microgreen height, sample weight per plot. The results showed that the white light spectrum produced the best germination percentage and germination rate, while the blue light spectrum produced the best microgreen height. Seed soaking time of 12 hours produced the best percentage of germination, germination rate, and weight per plot, while soaking time of 24 hours produced the best germination time and microgreen height. Blue light spectrum and 24 hours soaking time produced the best interaction on microgreen height, and weight per plot. White light spectrum and 12-hour soaking produced the best interaction on germination percentage

Pengaruh Konsentrasi Pupuk Kalium Nitrat (KNO3) dan Kalium Dihidrophosphate (KH2PO4) Terhadap Pertumbuhan dan Hasil Cabai Merah Keriting

Curly red chilies are one of the horticultural products that have the potential to be developed because they have high economic value, however the production of curly red chilies in Lampung Province has continued to decline in the last 4 years. One way to increase production value is to increase soil fertility by increasing fertilization. Fertilization is carried out to replace nutrients lost due to rainwater by using fertilizer containing the elements N, P and K, one of which is KNO3 and KH2PO4 fertilizer. The aim of this research is to find out which combination of KNO3 and KH2PO4 is better and to find out whether the single application of KNO3 and KH2PO4 is good for the growth and yield of curly red chili plants. The research used a factorial randomized block design consisting of 2 factors. The first factor is the concentration of KNO3 fertilizer, with 3 levels, namely 3; 4; 5g/l. The second factor is the concentration of KH2PO4 Fertilizer, with 3 levels of 3,5; 4,5; 5,5g/l. Each treatment was repeated 3 times, so there were 9 treatment combinations and 27 experimental units. The variables observed were plant height, stem diameter, number of shoots, fruit weight per plant, number of fruit per plant and root length. Potassium nitrate (KNO3) fertilizer treatment with a concentration of 5 g/l and potassium dihydrophosphate (KH2PO4) 5,5 g/l had a significant effect on plant growth in plant height. Providing potassium nitrate (KNO3) fertilizer with a concentration of 4 g/l and potassium dihydrophosphate (KH2PO4) 5,5 g/l had a significant effect on plant growth including the number of branches and stem diameter. Providing potassium nitrate (KNO3) fertilizer with a concentration of 4 g/l and potassium dihydrophosphate (KH2PO4) 4,5 g/l had a significant effect on plant yields including the number of fruit/plants and the weight of the fruit/plant

Adaptasi Tanaman Pohpohan (Pilea trinervia Wright) Pada Berbagai Taraf Naungan

Sayuran indigenous yang telah dimanfaatkan oleh masyarakat sebagai bahan pangan dan kesehatan karena mengandung zat gizi yang sangat bermanfaat bagi tubuh seperti vitamin, mineral, dan serat. Salah sayu daerah yang banyak mengembangkan sayuran indigenous adalah Jawa Barat. Interaksi dengan tanaman sayuran indigenous seperti pohpohan menunjukkan bahwa masyarakat peduli terhadap kesehatan. Kemampuan adaptasinya yang luas dan tingginya kandungan nilai gizi membuat tanaman ini layak untuk coba dikembangkan di daerah lain seperti di Lampung. Penelitian ini bertujuan untuk mengetahui kemampuan adaptasi tanaman pohpohan asal Jawa Barat didaerah Lampung. Penelitian dilakukan di Politeknik Negeri Lampung mulai Mei hingga September 2019. Percobaan disusun menggunakan RKTS dengan 5 perlakuan dan 3 ulangan. Perlakuan terdiri dari berbagai tingkat naungan antara lain : N0 (tanpa naungan), N1 (naungan 60%), N2 (naungan 70%), N3 (naungan 75%) dan N4 (naungan 90).  Hasil penelitian menunjukkan bahwa tanaman pohpohan mampu beradaptasi dengan baik pada kondisi naungan 60%