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APLIKASI KOMPOS SEBAGAI PUPUK ORGANIK UNTUK MENINGKATKAN KANDUNGAN FENOL PADA TANAMAN JAHE MERAH

Agrotekno Vol. 15, No. 2 Agustus 2009
Publisher : Agrotekno

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Abstract

This research was aimed to optimize the production ofvolatile oil and oleoresin of red ginger crops by optimizingthe usage of compost as fertilizer. Compost was applied as anorganic fertilizer to red ginger crops in poly-bag withfertilization doses 0, 0.2, 0.4, 0.6, 0.8, and 1 kg for one kgcrops planting and red ginger was harvested at 8 and 9months after planting.Red ginger contained volatile oil of 3.8-3.97% DM, totalphenol of 5.7 - 6.4% DM, and ability to catch free radical ofDPPH compound of phenol of 2.5 - 2.6% DM. The quality ofthe red ginger was measured at the age of between 8 and 9months. Depended upon its volatile oil content, ability tocatch free radical DPPH compound of phenol, and its contenton phenol, hence harvest time of ginger could be minimizedto 8 months.

ANALISIS KEBUTUHAN AIR TANAMAN STRAWBERRY YANG DIBUDIDAYAKAN SECARA HIDROPONIK DI DALAM GREENHOUSE

BETA (Biosistem dan Teknik Pertanian) Vol 1, No 2 (2013): Agustus
Publisher : Universitas Udayana

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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 wouldincrease 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

BETA (Biosistem dan Teknik Pertanian) Vol 1, No 2 (2013): Agustus
Publisher : Universitas Udayana

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh tingkat pemberian dosis  pupuk kompos terhadap kebutuhan air tanaman beberapa jenis kacang yaitu kacang tunggak, kacang kedelai, dan kacang hijau. Perbandingan tanah dan kompos terdiri dari 7 tingkatan yaitu: 100% tanah; 97,5% tanah : 2,5% kompos; 95% tanah : 5% kompos; 92,5% tanah : 7,5% kompos; 90% tanah : 10% kompos; 87,5% tanah : 12,5% kompos; dan 85% tanah :15% kompos. Data dianalisis secara statistik kuantitatif dan di bahas secara deskriptif. Parameter yang diamati dalam penelitian ini adalah kapasitas lapang, titik layu, ketersediaan air tanah, dan kebutuhan air tanaman. Hasil penelitian menunjukkan bahwa perlakuan tingkat pemberian pupuk kompos pada budidaya beberapa jenis kacang berpengaruh terhadap ketersediaan air tanah. Ketersediaan air pada budidaya kacang tunggak berkisar 34,4% - 42,7%, pada budidaya kacang kedelai berkisar 42,3% - 48,6%, pada budidaya kacang hijau 46,7% –55,7%. Kebutuhan air tanaman sangat bervariasi bergantung kepada jenis kacang. Pada penelitian ini diperoleh perbandingan tanah dengan pupuk kompos 85% : 15% merupakan perlakuan terbaik untuk mendapatkan nilai kebutuhan air tanaman yang optimal pada budidaya kacang tunggak, kacang kedelai, maupun kacang hijau.

KAJIAN JARAK LEGOWO TERHADAP IKLIM MIKRO PADA BUDIDAYA PADI SISTEM JAJAR LEGOWO

BETA (Biosistem dan Teknik Pertanian) Vol 2, No 1 (2014): Februari
Publisher : Universitas Udayana

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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 1.50x28 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. 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.

PENGARUH TEKNIK BUDIDAYA SRI (System of Rice Intensification) DAN LEGOWO TERHADAP IKLIM MIKRO DAN PRODUKTIVITAS PADI KETAN (Studi Kasus di Subak Sigaran)

BETA (Biosistem dan Teknik Pertanian) Vol 2, No 1 (2014): Februari
Publisher : Universitas Udayana

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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 riceplants. 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.

KAJIAN PENGHEMATAN AIR IRIGASI PADA METODE SYSTEM OF RICE INTENSIFICATION (SRI) DAN tEKNIK IRIGASI BERSELANG (MGENYATIN) PADA BIDUDAYA PADI (STudi Kasus di Subak Sigaran)

BETA (Biosistem dan Teknik Pertanian) Vol 2, No 2 (2014): Agustus
Publisher : Universitas Udayana

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Abstract

This research was conducted to compare the reducing of irrigation water from some cultivation, cultivation model were System of Rice Intensification method (SRI), ngenyatin technique and the conventional cultivation, as well as compared the productivity of rice plants cultivation. This research consists of four treatments with three repetitions, which is conventional treatment, SRI method, Ngenyatin technique, and the combination of SRI method and Ngenyatin technique. Parameters that observed in this research were: the needs of irrigation water, the reducing of irrigation water each treatments compared to K0, the weight of clumps, the seeds weight per clump, the stalks length, the seeds amount per stalk, the amount of productive seeds, the rice weight per clump, the percentage of rice based on its amount, the percentage of rice based on its weight, the weight of 100 grains and the result rice plants production. The research results show significant differences with cultivation technique between the treatments that influence to the thrift of irrigation water in every treatments and influence to the rice plants productivity. K3 treatment that applied the SRI method that combined with Ngenyatin system which is the best treatment by minimize the using of irrigation water up to 58% compared than K0 treatment that applied conventional planting and produced 8.85ton/ha productivity compared with other treatments.

MODIFIKASI MESIN PENCETAK PAKAN BUDIDAYA LELE BERBENTUK PELLET DENGAN KEBUTUHAN DAYA RENDAH

BETA (Biosistem dan Teknik Pertanian) Vol 2, No 1 (2014): Februari
Publisher : Universitas Udayana

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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 %

KAJIAN FREKUENSI DAN LAMA PEMAPARAN MEDAN ELEKTROMAGNETIK PADA FASE GENERATIF TERHADAP PRODUKSI DAN KUALITAS BUNGA KRISAN (Crhysantemum)

BETA (Biosistem dan Teknik Pertanian) Vol 3, No 2 (2015): Agustus
Publisher : Universitas Udayana

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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.

PERANCANGAN SISTEM IRIGASI OTOMATIS DENGAN SENSOR RESISTIF BERBASIS KADAR AIR TANAH PADA TANAMAN RUKOLA (Eruca sativa)

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 1 (2016): Maret
Publisher : Universitas Udayana

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Abstract

Rukola (Eruca sativa) is a horticultural plants originating from the Mediterranean with a high of vitamins such as A, B complex, C, and K. Rukola can be growed well at low ambient temperatures with soil moisture content between 20% - 40%. Therefore, irrigation control system is required to obtain at the appropriate moisture content for rukola plants. The objective of this research was to build an automatic irrigation system with the resistive sensor based on soil moisture, that can perform automatic irrigation accordance optimal water content in rukola cultivation. The control system in this research was created using the multiplexing control system with resistive AC stainless steel sensors. The sensors was read the resistive of soil moisture that calibrated into a percent (%) of water content and displayed on the display per second. The output of the pump is controlled by limits of water content that programmed by the microcontroller AVR AT Mega 8535. Calibration control system conducted at field capacity and permanent wilting point. Automatic irrigation control system was able to work well with the limits defined soil moisture is 20% lower limit and 39% upper limit. The first testing results of control system I have R2 0.8462 with RMSE values 0.02 and control system II have R2 0.8603 with RMSE value 0.02. The second test of control system I have R2 0.8896 with RMSE value 0.01 and control system II have R2 0.9121 with RMSE value 0.02. If R2 that exceeds the value of 0.7 and RMSE (Root Mean Square Error) ? 0.1, then the performance of the automatic irrigation control system is working accurately.

KAJIAN FREKUENSI DAN LAMA PEMAPARAN MEDAN ELEKTROMAGNETIK PADA FASE GENERATIF TERHADAP PRODUKSI DAN KUALITAS BUNGA KRISAN (Crhysantemum)

BETA (Biosistem dan Teknik Pertanian) Vol 3, No 2 (2015): Agustus
Publisher : Universitas Udayana

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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.