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All Journal Jurnal BETA (Biosistem dan Teknik Pertanian)
I Wayan Tika
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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KAJIAN FREKUENSI DAN LAMA PEMAPARAN MEDAN ELEKTROMAGNETIK PADA FASE GENERATIF TERHADAP PRODUKSI DAN KUALITAS BUNGA KRISAN (Crhysantemum) I Made Wirawan Suputra; I Made Anom. S. Wijaya; I Wayan Tika
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/j.beta.2015.v03.i02.p05

Abstract

The objectives of this research were to (1) determine the production and quality of chrysanthemum on frequency (amount of exposure per day) and duration of electromagnetic field exposure during generative phase, (2) determine frequency and duration of electromagnetic field exposure which produce the best production and quality of chrysanthemum flower. The method of this research was experimental method with two treatments. The first treatment was frequency of electromagnetic field exposure consisted of 1, 2 and 3 times per day and second treatment was electromagnetic field exposure duration consisted of 5, 20, and 35 minutes. Variables which measured for flower production were age of plant that started to blooming, harvest age, amount of flower and amount flower of half blooming, while for quality were diameter of flower, flower color, weight flower, and flower resistance after harvest. Result showed that production and quality of chrysanthemum was low, if electromagnetic field exposure at 3 mT (militesla) with frequency exposure 1, 2 and 3 times per days and duration exposure was 5, 20, and 35 minutes in generative phase. The best treatment contained in frequency 2 time per day and exposure duration 5 minutes gave the best result for production and quality of chrysanthemum flower.
Pengaruh Penggunaan Jenis Mulsa terhadap Sifat Fisik Tanah dan Laju Pertumbuhan Tanaman Tomat (Lycopersicum esculentum L.) I Kadek Dwi Adi Saputra; I Wayan Tika; Ni Luh Yulianti
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 1 (2021): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2021.v09.i01.p01

Abstract

Soil processing intensively without paying attention to factors which affect it such as the lack of nutrients, unbalance fertilization decreases physical quality of the soil. Therefore, soil processing is necessary to the growing condition of the tomato plants and improve nutrient availability for plants. The aims of the research are to determine the changes in soil physical properties due to the use of mulch types in line with the age of tomato plants and determine the effect of the use of mulch types on the rate of growth of tomato plants. This research is conducted with a completely randomized design with treatment without mulch, silver plastic mulch, black plastic mulch, transparent UV plastic mulch, and rice straw mulch. Each handling 15 times. The results show that the ground water content of 2 week after planting was 13-35%, 4 week after planting 20-42%, 6 week after planting 23-44%, 8 week after planting 27-51%, 10 week after planting 26-53%, 12 week after planting 32-63%. Average soil organic matter 1.16% with low category. Average permeability of land is 4.13 cm/hour in the slow to moderate category. Treatment without mulch significantly affected to the soil porosity with an average value of 48% in the less grade. The average value of the number of leaves in the silver plastic mulch treatment 122.89 strands and 124.83 strands of rice straw. The dry weight value of tomato plants in the treatment of rice straw mulch 205.87 grams and in the treatment of transparent UV plastic mulch 118.33 gram.
ANALISIS KEBUTUHAN AIR TANAMAN STRAWBERRY YANG DIBUDIDAYAKAN SECARA HIDROPONIK DI DALAM GREENHOUSE I Made Purnadiyasa; I Wayan Tika; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 2 (2013): Agustus
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/j.beta.2013.v01.i02.p02

Abstract

The purpose of this study was to determine the pattern of water requirements for strawberry plant using hydroponic which was planted in the greenhouse, from transplanting to harvesting time. The materials used in this study were the strawberry seedlings, rice husk, NPK fertilizer and plastic polybag. The tools used were 4-way soil analyzer to measure soil pH, soil moisture, light intensity for soil, analytical balance, plastic tank that were used to store water, ruler and thermometer. Parameters observed were initial moisture content, the period of irrigation water supply, amount of water used by plants and irrigation water requirement. Based on the study which was conducted during the (i)high level is (57,66 ml/day), (ii)medium is (42,40 ml/day) and (iii)low is (30,06 ml/day) of soil moisture, it showed that crop water requirement depended on existing soil moisture. In addition, there was a trend that crop water requirement would increase as the increase of soil moisture. During low level of soil moisture (under the field capacity), the plant would experience difficulties in extracting water from soil. Conversely, during high level of soil moisture, water would easily be taken and plant water requirement would increase because of the increase of soil evaporation, especially during the initial stage of plant growth.
PENGARUH TINGKAT PEMBERIAN KOMPOS TERHADAP KEBUTUHAN AIR TANAMAN BEBERAPA JENIS KACANG Frans Azarya Simanjuntak; I Wayan Tika; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 2 (2013): Agustus
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/j.beta.2013.v01.i02.p04

Abstract

The aim of this research is to understand the effect of provision rates of dosage compost in crop water requirements for several types of beans. There are seven levels of soil and compost ratio, there are: soil 100%, 97.5% soil: 2.5% compost, 95% soil: 5% compost; 92.5% soil: 7.5%. compost 90% soil: 10 % compost; 87.5% soil: 12.5% compost and 85% soil: 15% compost. The research was analyzed descriptively. Parameters observed in this research were the field capacity, permanent wilting point, availability of water, crop water requirements. The result of this research indicate that the provision rates of compost in several types of beans affected the water availability. For cowpea ranged from 34,4% - 42,7%, soybeans ranged from 42,3% - 48,6%, green beans ranged from46,7% – 55,7%. Crop water requirements varied depend on the type of the beans. The ratio of soil and compost 85%:15% for cowpea cultivation soybean and green beans is the best in resulting low crop water requirement.
KAJIAN JARAK LEGOWO TERHADAP IKLIM MIKRO PADA BUDIDAYA PADI SISTEMJAJAR LEGOWO I Putu Hendra; Sumiyati Sumiyati; I Wayan Tika
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 2 No 1 (2014): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2014.v02.i01.p01

Abstract

This study was conducted to determine the legowo distance studies in rice farming systems legowo row. This study is also expected to get the optimal distance legowo on legowo row planting system to improve the productivity of rice in Subak system. This research is divided into 5 treatment, the treatment in accordance with local farmers distance of 28 cm ; legowo 6:1 with wide legowo 1.25 x 28 cm ; legowo 6:1 with wide legowo 1.50 x 28 cm ; legowo 6:1 with wide legowo 1.75 x 28 cm ; legowo 6:1 with wide legowo 2 x 28 cm. This study was repeated 3 times. Parameters observed in this study ware : microclimate include: ambient temperature (T) , relative humidity (RH ), solar intensity (I). The production of a broad unity. In addition, the observed range of roots. The results suggest the application of legowo 6:1 cropping systems with a wide range legewo difference in each treatment shown to affect the relative humidity (RH), solar radiation, and air temperature. The results were obtained with a wide range of treatment legowo 1.75 x 28 cm is the best treatment with the highest yield among other treatment that is equal to 7.41 ton / ha.
PENGARUH TEKNIK BUDIDAYA SRI (System of Rice Intensification) DAN LEGOWO TERHADAP IKLIM MIKRO DAN PRODUKTIVITAS PADI KETAN I Putu Sanjaya; I Wayan Tika; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 2 No 1 (2014): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2014.v02.i01.p02

Abstract

This study was conducted to determine the effect of planting System of Rice Intensification (SRI) and legowo 6:1 row planting system of the microclimate and the rice plants productivity. This study was divided into 4 treatments with 3 replications, ie treatments conventional techniques, SRI method of planting, application of legowo 6:1 row planting system, and combination of SRI planting method and legowo 6:1 row planting system. The results showed the application of SRI planting method and legowo 6:1 row planting system not affecting the microclimate conditions, but affecting the productivity of rice plants. The results also showed that treatment K3 applying SRI methods combined with legowo 6:1 row planting system is the best treatment compared with other treatments.
MODIFIKASI MESIN PENCETAK PAKAN BUDIDAYA LELE BERBENTUK PELLET DENGAN KEBUTUHAN DAYA RENDAH Yudha Kristyanto Leksono; Yohanes Setiyo; I Wayan Tika
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 2 No 1 (2014): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2014.v02.i01.p04

Abstract

The aim of this study were to modify the machines with a small power requirements for printing fish feed pellets and to test the performance of the machine. The modified engine was a machine design by Giyarto result , modifications was on the power requirements . Stages of modification were calculate the strength of each major component of the engine , and followed by selecting the machine components. The main components of the machine are : V-belt, pulley, cylinder, cutting knife, pressing pellets and an electric motor. Engine performance testing conducted with 7 kg of dough pellets and the test was repeated 5 times. Parameters measured in this study were: machine capacity, efficiency and quality of the work machine. The results showed that the pellet-making machine modified increased in performance. The machine indicated the performance efficiency of an average 87.53 %
Co-Authors Frans Azarya Simanjuntak I Kadek Dwi Adi Saputra I Made Anom. S. Wijaya I Made Purnadiyasa I Made Wirawan Suputra I Putu Hendra I Putu Sanjaya Ni Luh Yulianti Ni Nyoman Sulastri Sumiyati Sumiyati Yohanes Setiyo Yudha Kristyanto Leksono