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INDONESIA
AGRITROP
Published by Universitas Udayana
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Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
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Articles 40 Documents
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PENGARUH LAMA PENIRISAN TERHADAP DAYA SIMPAN BENIH KAKAO (THEOBROMA CACAO L.) PUTRI DARMAWATI, IDA AYU; NGURAH RAKA, I GUSTI; KETUT AGUNG, IDA BAGUS
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

This experiment was carried out at Laboratory of Seed Technology, Agronomy Department, Faculty of Agriculture, Udayana University. The aim of this experiment was to find out the effect the airing periods on seeds water content, storability and viability of cacao seeds. Wet sawdust (60% water content) was used to keep the cacao seeds in storage. The cacao seeds was airing in four level before storing, those are: 1) without airing, 2) airing in two days, 3) airing in four days, and 4) airing in six days. The completely randomized design with six replications was used in this experiment. Every three days along the 30 days storage periods, the percentage of seeds germinated in storage, seeds water content, seeds germination, the unison of seedling growth, and the performance of seedling (leaf number, height, long of primary root, and totally of seedling dry weight) were detected. The storing using sawdust (60% water content) can save the viability and vigor of cacao seeds which is by six days airing experience. Storing seeds as long as 15 days can save the seeds germination by the rate of more than 80%, and up to 50% seeds germination rate can be save on the 21 days store periods. Storing seeds as long as 9 days can save the cacao seeds vigor?s (with the variable of unison of seedling growth) by the rate of more than 80%. The seedling performances were not significant differences between the level of airing treatment, which is detected every 3 days along 30 days store periods.
ARAHAN PENGGUNAAN LAHAN DENGAN METODE SKORING PADA SUB DAS UNDA HULU (RECOMMENDED LAND USE PATTERN BY SCORING METHOD AT UNDA WATERSHED) -, WIYANTI
AGRITROP Vol. 29, No. 4 Desember 2010
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Abstract

Research has been conducted at Unda watershed. The aim of this experiment is to determine the land use pattern of Unda watershed. A method used in this research was by scoring which is introduced by Bambang Sukartiko. In this method, three factors has been considered such as : slope of land, soil type based on susceptibility to erosion, and daily rain intensity. Land unit has been determined with the compilation of maps of slope, soil type and land use. It was 32 land units has been determined. Based on the result of research, it was found that Unda watershed especially in forest area recommended the land use pattern was forest production and conservation forest. Meanwhile, in outer area, it was focused to be a plantation of perennial and annual crops, as well as a buffer zone. The forest production was found at land unit number of 9, 10, 11 and the conservation forest at land unit number 12. The annual plantation was found at land unit number 1, 5 and 6; while perennial crops was in land unit number 4 , 23, 24, 28 and 29. The buffer zone was in land unit number 2, 3, 7, 8, 13, 15,16, 17, 18, 19, 20, 21, 22, 25, 26, 27, 30, 31 32.
Potensi Pengembangan Bawang Putih (Allium Sativum L.) Dataran Rendah Varietas Lokal Sanur SARWADANA, SANG MADE; ALIT GUNADI, I GUSTI
AGRITROP Vol. 26, No. 1 Maret 2007
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Abstract

Garlic (Allium sativum L.) Local Sanur variety is one of garlic varieties which are commonly cultivated inBali. This variety has not been identified, although it has been known having good agronomical, as well as goodmorphological characteristics. The aims of this study were to identify Local Sanur variety has good characteristicsfor cultivated at low land area. This experiment was conducted at Sanur, the eastern region of Denpasar. The seedswere planted on the 5.0 m x 2.5 m garden bed with the plant spacing of 25 cm x 25 cm. There were 15 replications,hence, 15 garden-beds all. Each garden-bed was divided into two parts. The plants on a part side were used asdestructive samples, which were required for the variables of growth analysis, and for determination of the periodof vegetative and bulbing phase. Whereas the plants on the other part were used for the variables of plant growthand yield. The result show that the variety of Local Sanur had specific characteristics as described below: the plantheight ranged 48.9 to 56.7 cm, the leaf number was 5.14 to 6.06; the leaf size were 35.73 to 40.73 cm in length and1.05 to 1.39 cm in width. The bulbing phase was commenced at 49 days after planting; therefore the vegetativeperiod was 49 days. The bulb was harvested at 85 days after planting, indicated the bulbing period of 36 days.The yield was 4.82 to 6.60 tons of dry weight per hectare. It was also identified that the bulb has oval shape (egglike)with white flesh and yellowish white skin. Those characters indicated that Local Sanur Varierty suitable fordeveloping at low land area.
Penularan Penyakit CVPD (Citrus Vein Phloem Degeneration) oleh Diaphorina citri Kuwayama (Homoptera: Psyllidae) pada Tanaman Jeruk Siam WIJAYA, I NYOMAN
AGRITROP Vol. 26, No. 4 Desember 2007
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Abstract

The desperation rate of CVPD disease on the central of citrus area in Bali were 32% per year, however thepopulations of D. citri as vector were relative low, so that the research concerning on the minimum population ofD. citri that effective as vector were needed. The aims of this research were to know the minimum population ofD. citri to transmit CVPD effectively, incubation periods of disease on citrus siam variety and the characteristicof pathogen on the vector. The research was carried out in the glass house of Department Plant Pest and Disease,Faculty of Agriculture Udayana University. The result showed that transmission of CVPD disease could be infectedby one imago of D. citri, through the increase of vector population decreased the infection period of CVPD diseased.Liberobacter asiaticum as the pathogen of CVPD had ability to persistent on the vector.
Pengaruh Suhu Air dan Lama Waktu Perendaman Beberapa Jenis Sayuran Daun pada Proses Crisping SUPARTHA UTAMA, I MADE; AYU NOCIANITRI, KOMANG; RINA PRATIWI PUDJA, IDA AYU
AGRITROP Vol. 26, No. 3 September 2007
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Abstract

The primary cause of wilting in leafy vegetables after harvesting is high intensity of transpiration processthrough natural openings (stomata, hidatoda and lenticels). The mechanism of closing and opening of those naturalopenings is affected by the temperature of the environment. Under high external temperature, the stomata tendto open and vice versa. It is possible to diffuse water into the produce to give a vigorous effect by controlling theexternal temperature and moisture. The process is normally called crisping. The aim of this experiment was tostudy the effectiveness of crisping in order to give vigorous and freshness effects to four different leafy vegetables,namely lettuce, kangkung, leeks and chinese cabbage compared to those without crisping. The crisping processwas involving the immersion of produce in three different water temperatures (30, 40 and 50oC) combined withdifferent lengths of immersion times (1, 3, 5 and 7 minutes) and continued by immediate movement of produce tolow temperature (5±2oC) and stored for 12 hrs before placing and displaying at the show case under temperatureof 10±2oC. Produce treated as controls were provided without immersion in the warm water and stored at roomtemperature, and other was also placed at the show case. The result shows that the effectiveness of crisping dependedupon the physical structure or morphology of the respective vegetables. In general, the water temperatures of 30 and40oC and combined with the lengths of immersion time of 1-3 minutes were effective to improve the freshness andvigorousness of lettuce and leeks, while 7 minutes immersion was effective for kangkung and Chinese cabbage.
PENGUJIAN DAYA HAMBAT EKSTRAK BEBERAPA TUMBUHAN TERHADAP JAMUR CERATOCYSTIS SP. PENYEBAB PENYAKIT BUSUK BERAIR PADA BUAH SALAK BALI SUNITI, NI WAYAN
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

The research aimed to determine the inhibition activity of some plant extracts against Ceratocystis sp. on PDA medium, salacca piece, whole fruit and liquid medium. Research?s result showed that among nine plant extracts, two extracts inhibited the growth of Ceratocystis effectively, namely extract of Albinia galanga rhizome and boiled papaya leaf. Albinia galanga rhizome showed inhibitory 92.5 % on PDA medium and 89.6% on PD Broth liquid medium. Boiled papaya leaf extract showed 73.3% on PDA medium and 57.7 % on PD Broth liquid medium. On fruit piece and whole fruit inhibition activity of boiled papaya leaf extract has higher than to Albinia galanga rhizome extract.
DAYA HAMBAT EKSTRAK BIJI JINTAN PUTIH (CUMINUM CYMINUM) DAN BIJI PALA (MYRISTICA FRAGRANS) TERHADAP JAMUR PUTIH FUSARIUM OXYSPORUM F.SP. VANILLAE PADA MEDIA PDA DAN PEMBIBITAN TANAMAN PANILI SUDARMA, I MADE
AGRITROP Vol. 24, No. 4 Desember 2005
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Abstract

Stem rot disease on vanilla caused by Fusarium oxysporum f.sp. vanillae has been known as the most destructive disease on vanilla in Bali since 1992. A drastic disease of vanilla cultivation areas and vanilla production occurred during 1991 to 2001 resulted from the disease. The vanilla cultivation areas has been decreased about 91% and the production of vanilla bean has also been decrease about 98% during that period. Many effort have been done to control the disease such as the use of synthetic fungicide, cultural practice, etc., but until now the disease is still can not be controlled appropriately. In order to find other alternatives for controlling the disease, seeds of plants were studied for their bioactivity against Fusarium oxysporum f.sp. vanillae. Of these, the seed extracts of C. cyminum and M. fragrans showed their inhibitory activity 77.35% and 62.13% against this fungus on potato dextrose agar (PDA) medium at concentration of 0.5% (w/v). On a green house experiment, application of the seed extract into the soil at the concentration of 0.5% (w/v) (in the process of seedling preparation) obviously inhibited the development of the population of this fungus, their inhibitory activity 99.9%. These result suggested that the seed extracts of Jintan Putih ( C. cyminum) dan Pala (M. fragrans) potentially can be used to control stem rot disease on vanilla.
KARAKTERISASI CHRYSANTHEMUM STUNT VIROID (CSVD) YANG MENGINFEKSI KRISAN DI INDONESIA (CHRYSANTHEMUM STUNT VIROID (CSVD) CHARACTERIZE INVECTED CHRYSANTHEMUM IN INDONESIA) TEMAJA, I G.R.M.
AGRITROP Vol. 29, No. 1 Maret 2010
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Abstract

Chrysanthemum stunt viroid (CSVd) is an important disease of the florist’s chrysanthemum caused by viroid. The symptoms of CSVd disease were variable and are highly depend on both of cultivar and environmental conditions. The main symptom is stunting, causing the reduction of weight in overall of mature plants 30 to 50%. The other common symptoms in floral showed the infected plants having reduction of flower size and demonstrating premature flowering. CSVd is mainly transmitted by propagation, when cuttings have been taken from infected mother plants. Our survey on growing fields in Baturiti (Bali), Cipanas and Bandung (West Java), and Medan (North Sumatera) found 51.22% of samples to be infected by CSVd based on the bioassay using S. cruentus. The infections of CSVd were found in all of survey location. Using the specific primers for CSVd, a 250 bp DNA product was successfully amplified by RT-PCR technique. By sequencing analysis, Indonesian isolates were classified into two groups. The first group consist of the isolates from Cipanas, Medan and Bandung, and another group was Baturiti isolate.
Pengaruh Pemberian Beberapa Dosis Pupuk (N, P, K ) dan Jenis Pupuk Alternatif terhadap Hasil Tanaman Padi (Oryza sativa L.) dan Kadar N, P, K Inceptisol Selemadeg, Tabanan KASNIARI, D.N.; SUPADMA, A.A.NYOMAN
AGRITROP Vol. 26, No. 4 Desember 2007
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Abstract

A pot experiments was conducted in September 2000 until January 2001 at Experimental Station of Faculty ofAgriculture, Udayana University. The experiment was arranged in Completely Randomized Design with treatmentsallocation in factorial with three replications. The treatments were : the first factors consisted of four rates of N,P,Kfertilizers: F1 = 300 kg Urea, 75 kg SP.36, 50 kg KCl ha-1 (1.2 g Urea, 0.3 g SP.36, 0.2 g KCl pot-1) ; F2 = 250 kgUrea, 50 kg SP.36, 25 kg KCl ha-1 (1.0 g Urea, 0.2 g SP.36, 0.1 g KCl pot-1) ; F3 = 200 kg Urea, 25 kg SP.36, 0kg KCl ha-1 (0.8 g Urea, 0.1 g SP.36, 0 g KCl pot-1); F4 = 150 kg Urea, 0 kg SP.36, 0 kg KCl ha-1 (0.6 g Urea, 0 gSP.36, 0 g KCl pot-1). The second factors were three kind of alternative fertilizers : Fr (Floran), Gn (Greener) andDg (Dekorgan) each rate 3 l ha-1 or 1.333 ml pot-1 (concentrations 3 ml l-1 water). The results indicated that theinteractions between fertilizers rates (N,P,K) with kind of alternative fertilizers were not significantly different forall variable observed. The alternative fertilizers not significantly different for all variable too but fertilizers rates(N,P,K) affected the fertile number of rice tillers and highly significantly affected to the available P and K in the soil.The treatment of 250 kg Urea, 50 kg SP.36, 25 kg KCl ha-1 gave the highest fertile tillers (37.00 tillers pot-1) andavailable P in soil (10.18 ppm) but the treatment of 300 kg Urea, 75 kg SP.36, 50 kg KCl was observed the highestavailable K in the soil. The combination treatment of 300 kg Urea, 75 kg SP.36, 50 kg KCl ha-1 with Dekorganproduced the highest rice yield (65.69 g pot-1) or 58.14 % higher than the lowest yield produced by combinationtreatment between 200 kg Urea, 25 kg SP.36, 0 kg KCl ha-1 and Dekorgan.
RESPON PEMBUNGAAN BEBERAPA KULTIVAR ANTHURIUM BUNGA POTONG TERHADAP APLIKASI GA3 BUDIARTO, K.; WURYANINGSIH, S.
AGRITROP Vol. 26, No. 2 Juni 2007
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Abstract

Anthurium is one of popular ornamental cut flowers in the world. Some constraints were revealed during production process due to the low plant productivity. Stimulating the plant to undergo earlier reproductive stage for producing more flowers was investigated. The application of growth regulator was predicted to have more desirable effects on this case as far as these concerned. The research was then, conducted to find out the effects of foliar spray of GA3 on the flowering response of several anthurium cultivars. The experiment was carried out at The Indonesian Ornamental Crops Research Institute from March to August 2005. A Randomized Completely Blocked Design (RCBD) with 7 replications was used. The first factor was GA3 concentration i.e. 0 (control), 500, 1000, 1500 and 2000 ppm, while the second factor was anthurium cultivars namely cv. Tropical, Kaumana and Safari. Results of the experiment showed that the application of GA3 hastened flower initiation and number of flowers per plant compared to the intact plant. However, the application of more than 500 ppm have no significant desirable effects. Stalk length and diameter decreased with the application of GA3 and more undesirable effects on stalk diameter was observed under GA3 higher than 1000 ppm. Cv. Tropical showed earlier flowering response and produced more flower than cv. Kaumana and Safari. However, this cultivar has the least stalk length and diameter. The highest stalk length and diameter was observed in cv. Safari.

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