Articles

Found 14 Documents
Search

APLIKASI IRIGASI PORTABLE SPRINKLER PADA TANAMAN PAKCOY (BRASSICA JUNCEA L.) DI DESA MARGA AGUNG KECAMATAN JATI AGUNG LAMPUNG SELATAN

Jurnal Teknotan Vol 10, No 1 (2016): Jurnal Teknotan, Agustus 2016
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Original Source | Check in Google Scholar | Full PDF (715.186 KB)

Abstract

Mayoritas petani di Desa Marga Agung menggunakan air hujan sebagai sumber air untuk memenuhi kebutuhan air tanaman. Pada musim kemarau, petani tidak dapat melakukan aktivitas budidaya tanaman karena terbatasnya sumber air. Upaya yang dapat dilakukan untuk meningkatkan produksi dan efesiensi pemakaian air irigasi yang tepat guna yaitu dengan menggunakan irigasi sprinkler. Penelitian bertujuan untuk mengetahui kinerja dan aplikasi portable sprinkler pada budidaya tanaman pakcoy (Brassica juncea L.). Hasil menunjukkan laju infiltrasi tanah (52 mm/jam) di lokasi penelitian lebih besar dibandingkan laju aplikasi sprinkler sebesar (6.49 mm/jam), sehingga pada saat dilakukan penyiraman tidak terjadi aliran permukaan (run off). Nilai koefisien keseragaman/coeficient uniformity (CU) sebesar 53.13%. Rendahnya nilai koefisien keseragaman yang diperoleh disebabkan karena penggunaan metode single nozzle head sprinkler dan tingginya kecepatan angin yang terjadi di lokasi penelitian sebesar 0.66 m/det. Hasil produksi tanaman pakcoy sebesar 1.7 kg/m2 dengan berat per tanaman 70 gram/tanaman.Kata kunci: irigasi portable sprinkler, tanaman pakcoy, pompa.

Pendugaan Kebutuhan Air Tanaman Nanas (Ananas Comosus l. Merr) Menggunakan Model Cropwat

Jurnal Irigasi Vol 7, No 1 (2012): Jurnal Irigasi
Publisher : Balai Penelitian dan Pengembangan Irigasi

Show Abstract | Original Source | Check in Google Scholar | Full PDF (778.524 KB)

Abstract

Nanas merupakan salah satu industri tanaman potensial di Provinsi Lampung. Namun kendala yang sering dihadapi dalam pemberian air irigasi adalah bagaimana cara atau metode pemberian air irigasi yang baik dalam usaha memenuhi kebutuhan air tanaman agar produksi tanaman nanas yang dihasilkan tinggi dan berkualitas baik. Penelitian ini bertujuan untuk menganalisa dan evaluasi tingkat ketelitian perhitungan jumlah kebutuhan air tanaman nanas dengan menggunakan Model CROPWAT. Penelitian dilaksanakan pada bulan Oktober 2006 sampai dengan Januari 2007 bertempat di Perkebunan Nanas, Terbanggi Besar, Lampung Tengah. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Lengkap (RAL) dengan tiga metode pemberian air irigasi dan enam ulangan, yaitu: pemberian air irigasi berdasarkan Model CROPWAT, pemberian air irigasi berdasarkan metode perkebunan nanas (Kontrol), dan pemberian air irigasi dengan Metode Panci Evaporasi. Data yang diperoleh dianalisis sidik ragamnya dengan menggunakan uji F dan dilanjutan dengan uji beda nyata terkecil (BNT) pada taraf 5% dan 1%. Hasil penelitian menunjukkan bahwa kebutuhan air harian (ETc) tanaman nanas pada bulan Oktober sampai dengan Desember, frekeunsi pemberian air 10 hari sekali untuk Model CROPWAT sebesar 1,25, 1,16, dan 1,07 mm/hari secara berurutan. Sedangkan kebutuhan air dengan Metode PT. GGP sebesar 1,20 mm/hari, dan Metode Panci Evaporasi sebesar 1,13, 1,02, dan 0,9 mm/hari. Kebutuhan air bagi tanaman tercukupi dan tidak dalam kondisi tercekam. Perbandian kebutuhan air irigasi dari ketiga metode menunjukkan bahwa perhitungan kebutuhan air irigasi dengan Model CROPWAT lebih rendah 4,3% dan Metode Panci 16,4% dari kontrol. Trend rata-rata selisih pertumbuhan tanaman pada masing parameter pertumbuhan nanas untuk metode dengan Model CROPWAT cenderung lebih baik.

Rancangan Irigasi Sprinkler Portable Tanaman Pakchoy

Jurnal Irigasi Vol 11, No 1 (2016): Jurnal Irigasi
Publisher : Balai Penelitian dan Pengembangan Irigasi

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1315.64 KB)

Abstract

Salah satu teknologi yang dapat meningkatkan efisiensi dan efektivitas penggunaan air irigasi adalah irigasi sprinkler. Namun dalam penerapan sistem irigasi sprinkler di lapangan masih dijumpai banyak kendala, diantaranya adalah memerlukan biaya investasi awal dan operasional yang tinggi.  Oleh karena itu, penelitian ini bertujuan untuk merancang irigasi sprinkler portable yang mudah dipindahkan (portable) dan penggunaannya pada budidaya tanaman pakchoy, khususnya pada luas lahan pertanian yang kecil dan terpisah-pisah (0,10 – 0,30 ha) dan terpisah-pisah tanpa adanya sarana irigasi.  Metode yang digunakan dalam penelitian ini adalah penentuan panjang dan diameter pipa berdasarkan analisa hidrolika perpipaan, baik pipa lateral, manifold dan utama; perhitungan debit sprinkler menggunakan metode volumetrik; dan penentuan keseragaman irigasi menggunakan metode Christiansen.  Sistem irigasi sprinkler portable yang telah dikembangkan memiliki spesifikasi: nozzle head sprinkler jenis Sprinkler Impact Plactic dengan ukuran nozzle 4 mm, tinggi total stick riser 1,3 meter dengan diameter ¾”, pipa lateral elastis dengan diameter 2” dan panjang 50 meter, pipa sub-main (manifold) dan pipa utama sebesar 2”.  Adapun pompa yang digunakan memiliki total head 55 meter dengan tenaga penggerak 5,5 HP, serta selang hisap 2”.  Sistem irigasi sprinkler ini dapat beroperasi pada tekanan operasi 1 sampai dengan 4 bar untuk spasi sprinkler dan lateral 10 m x 10 m. Debit sprinkler pada tekanan 1 bar adalah 0,12 l/s.  Nilai keseragaman irigasi yang dihasilkan pada tekanan 1 bar sebesar 80%.  Untuk memperoleh nilai keseragaman irigasi lebih dari 85%, maka disarankan penggunaan tekanan operasi minimal 2 bar.  

Analysis Of Soil Water Distribution By Low-Pressure Drip Irrigation

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (73.876 KB)

Abstract

This study was carried out to determine the effect of low-pressure surface and sub-surface drip irrigation to soil wetting distribution pattern and emission uniformity.  The experiment was conducted with gravity drip irrigation system and modified point sources drip-line with polyester (PE) cloth.  The PE covered the drip-line with 1, 2, and layer and operation head was conducted by 0.5 m, 0.75 m, and 1 m. Evaluation of trickle irrigation system design were conducted by two treatment, surface and sub-surface, and slope of surface land were 0%, +2% and -2%.    The results indicated that the experiment using 3 layers of PE cover was better with the highest coefficient of water distribution uniformity with the following specifications: q= 1.31/hour with 1m head operation. The uniformity of distribution in sub-unit of this design was 74.6%, the average of diameter of soil surface wetting was 34 cm, and water content ranged from 20% - 54%. The average of sub-surface soil wetting was 31 cm, with average water content ranging from 24% - 30% in 6,5 hours application of irrigation. These ranges were still between the field capacity and permanent wilting point from the soil sample in location of study. Keywords: Low-pressure drip irrigation, polyester cloth, soil wetting distribution, emission uniformity.

ANALISIS DIFUSI LARUTAN PUPUK MELALUI DINDING MORTAR ARANG SEKAM PADI

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 3 (2016)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (930.981 KB)

Abstract

The aim of this reasearch is to determine difussion coefficient of nutrient solution through rice husk charcoalmortar walls. This research used completely randomized design (CR) with factorial arrngement which consistedof factors. The first factor, the material composition ratios of mortars (cement : sand : rice husk charcoal),consisted of two levels: P 1 (1:3:3) and P 2 (1:3:4). The second factor, the concentration of nutrient consisted ofree levels, namely K 1 (3 mS/cm), K 2 (6 mS/cm), and K 3 (9 mS/cm). Data set was analyzed by using ANOVA,then followed by using LSD at 5% significant level. Anova showed that there was interaction between mortarmaterial composition and nutrient concentration. The best diffusion coefficient was found in the treatment P 2 K 1and P 2 K 2 (1:3:4 and the nutrient concentrations 3 mS/cm, 6 mS/cm). Nutrient solution in the treatments couldpass through the walls of mortar very well, so that it could be used as a means of fertigation.Keywords: Fertigation, Diffusion, Nutrient Solution, and Rice Husk Charcoal Mortar.

Analysis Of Water Balance Of Corn (Zea Mays) In Bandar Lampung

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (79.622 KB)

Abstract

Indonesia needs of the community against corn continues to increase with increasing population growth as well. One effort to support the increased productivity of corn agribusiness development program is the provision of adequate water for plant growth. This aims of the research were (1) calculate the amount of corn crop water requirements, (2) quantify the potential of rainwater that can be utilized and stored, (3) analyze the potential evapotranspiration, percolation and runoff rate, (4) to calculate Kc plants. Field experiment was conducted at the Integrated Field Laboratory College of Agriculture, University of Lampung from 26 August to 4 December 2011. Field observations carried out on two experimental treatment with four repettition, the treatment were plots with plastic liner (plot A) and without plastic liner (plot B) where are each equipped with a water storage pond at the downstream. The results showed that (1) The consumptive use (ETc) during the study water requirements of corn is 614,3 mm. (2) Total runoff that occurs on a plot with plastic liner adn without plastic liner of land is 58,96 mm and 37,24 mm. (3) Percolation that occurred during the study in the plot of land without plastic liner is 40,58 mm. (4) The corn crop coefficient (Kc) on average in the early developmental stages, vegetative stage, stage of flowering and seed formation, and aging stage were 1,26; 1,72; 1,66 and 1,02. (5) the water productivity on plot A was 1,88 kg/m3 while on the plot B was 2,48 kg/m3. Keywords: water balance, corn, evapotranspiration, percolation, surface runoff.

PERBANDINGAN TEKNIK PEMAJANGAN SAYURAN DAUN UNTUK MEMPERTAHANKAN KESEGARAN SELAMA PENJUALAN

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (997.43 KB)

Abstract

This study aimedto observe the effect of soakingthe root of leafy vegetableson thefreshnessduringsale.  Vegetablesused werekangkungandgreen mustardfrom hydroponicsandconventionalcultivations.  Treatments wereconsistedofsoakingwithaeratedwater, soakingwithunaeratedwater, soaking withaerated nutrient solution(EC 0.4mS/cm), displaying in mist sprayed (humidified) cabinet without soaking,andcontrol(neither soaking nor spraying).  Soakingwas donein aglasscontainer(50cm length, 40cm width, 20cm height)andfilledwithwater±20liters/5 cm height.  Parametersmeasured werewater content, leaf water potential,andleafdiscoloration.  The results showedthatthe average room temperature and RH were found about 29oC and 80%. Respectively temperature and RH in the humidified cabinet were not much different from the ambiance.  Soakingwithaeration was able to keep vegetables fresh without wilting process.  Percentage of yellowing reached 10% of the total number within 5days for hydroponics kangkung, 2 days for conventional kangkung, 4days for hydroponics green mustard, and 2 days for conventional green mustard during the display.  Vegetables displayed in the room with no treatment (control) were wilting consistently, their water content was decreasing, and their water potential tended to increase from the beginning.  Thus, discoloration was more proper parameter for the soaked vegetables, while change of water content and water potential were more proper for non soaked or spayed vegetables. Keywords: Aerated, display, leafy vegetables, soaking

PENGARUH DAYA LAMPU NEON TERHADAP PERTUMBUHAN TANAMAN PAK CHOI (Brassica rapa L.) PADA SISTEM HIDROPONIK INDOOR

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 2 (2016)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (234.363 KB)

Abstract

The purpose of this research was to observe the influence of neon lamp power (watt) on the growth of Pak Choiin an indoor hydroponic system. This research was done by implementing several pots of Pak Choi planting undersome different treatments of lighting. The treatment consisted of neon lamp 20 watt (N1), neon 2 x 20 watt (N2),neon 40 watt (N3), neon 2 x 40 watt (N4) in a growth chamber and one treatment under the sun lighting (N0).The result of the research showed that the treatment of 2 x 40 watt neon lamp (N4) turned out to have the bestresult at all variables measured. Then, it was followed by treatment of neon 40 watt (N3) and the lowest result wasin neon 20 watt (N1). The highest biomass harvested was 35 g in N4, followed by 18 g in N3, then the 15 g in N2and 4 g in N1. However, the highest ash content was in the treatment of 20 watt neon lamp (N1), and followed byN2 (neon 2 x 20 watt). Although, Pak Choi grown under the sun ray has the highest biomass harvested, but it hadthe lowest mineral content.Keywords : Neon lamp, lamp power, Pak Choi, hydroponic wick system

TESTING ORGANONITROFOS FERTILIZER OF PLANT RESPONSES RAMPAI TOMATO (Lycopersicon pimpinellifolium) IN POT(POT EXPERIMENT

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 1 (2013)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (273.028 KB)

Abstract

Rampai tomato (Lycopersicon pimpinellifolium) is one important vegetable in Indonesia.  The production of rampai tomato increases every year, indicating a good opportunity for the tomato  in market. In the process of cultivation, fertilization is a very important aspect.  Advances in technology have invented some importantagricultural inputsespecially for chemical fertilizers such as Urea, TSP, KCl, NPK, and others.  Nowadays, small scaled farmers frequently face difficulty to get chemical fertilizers on market because ofeither scarcity or high price.  This condition needs to be well anticipated.  Reducing the use of chemical fertilizers by using organic fertilizers which isproduced from local and cheap natural resources is a somewhat promising solution.The organic fertilizer tested in this study is an alternative fertilizer called Organonitrofos.  Organonitrofos fertilizer is made from 70-80% cow dung and 20-30% phosphate rock, in the previous research.  Both the materials are locally available in Lampung.  This fertilizer then needs to be tested to ensureits consistency on plant production.  In this study, Organonitrofosfertilizerwas testedon rampai tomato plantsin pots (pot experiment).The study aimed  (1) to test the Organonitrofos fertilizer on the response of rampai tomato plants in pots (2)reduce the useof chemicalfertilizersin the production oframpai tomatoplants.The pot experiment was conducted in the Integrated Field Laboratory of the Faculty of Agriculture University of Lampung on January - April 2012.  The experiment used Completely Randomized Design (CR) with 7 treatment (7 combinations between chemical fertilizer and Organonitrofos), 4 replicates each.  Data collected was analyzed by using ANOVA and followed by LSD.  The variables observed were agronomic aspects (such as plant height, biomass, and production) and water consumption.  The results showedthat,based on theplant responsevariablessuch asplant height, upper and biomasses, andcrop production, treatmentC(100% Organonitrofos with 5000 kg/ha dose) was significantly different and better from every other treatment. Based on the water consumption (evaporationand irrigation), all the treatments were not significantly different.  However, the research showed that the use of 100% Organonitrofos fertilizer (5000 kg/ha); resulted in the highest water productivity (yield/water consumption).  This research also showed that the use of chemical fertilizersbe could significantly reduced by using combination between chemical fertilizers and Organonitrofos. Keywords: Rampai tomato , fertilizer, organonitrofos, plants response.

PENGARUH LAMA AERASI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN SAWI (Brassica juncea L.) PADA HIDROPONIK DFT (Deep Flow Technique)

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (698.485 KB)

Abstract

This study aims to determine the effect of duration of aeration on the growth and yield of mustard plants (Brassica juncea L.), nutrient solution and electricity consumptions.  The experiment was conducted in September and October 2013 at The Integrated Field Laboratory, and Land and Water Resources Engineering Laboratory, The Departement of Agricultural Engineering, The University of Lampung.  The experiment consisted of four treatments of aeration intervals including N24M0 (control), N15M30 (15 minute on-30 minute off), N15M60 (15 minute on- 60 minute off) and N15M90 (15 minute on- 90 minute off).  Each treatment was divided into 3 segments along the gutter, including R1 (segment near the aerator), R2 (middle segment chamfer) and R3 (section away from the aerator).  The results showed that the use of a nutrient solution circulating pump with a flow rate of 0.27 cm/s is sufficient for EC, DO, pH fairly uniform along the gutter.  Aeration with interval 15 minute on- 60 minute off turned out to produce the highest mustard crop (2,146 kg) with the lowest consumption of fertilizer and electricity by IDR 1753.00/kg. Keywords: Aeration, DFT, hydroponics, intermitten, mustard