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Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

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Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

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Search results for , issue "Vol 17, No 2 (2014): Widyariset" : 15 Documents clear

NERACA NITROGEN KAMBING PERANAKAN ETAWA YANG DIBERIKAN TINGKAT KONSENTRAT DAN HIJAUAN BERBEDA Anak Agung Ngurah Badung Sarmuda Dinata; Sentana Putra
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The research was conducted to determine the nitrogen balance in etawa descendant goat (PE) that is fed at different levels of concentrate and forage diets. Nine PE goats with average body weight of 23,98 ± 3,18 kg were used in this research for three months. This study was arranged in a completely randomized block design with 3 treatments and three blocks as replications. Treatments were PE goats fed 55% forage diets (Pennisetum purpureum) + 45% consentrate (A) ; PE goats fed 70% forage diets (P. purpureum: Gliciridia sepium = 2 : 3) + 30% concentrate (B) ; and PE goats fed 85% forage diets (P. purpureum: G. sepium : Hibiscus tilliacius = 1: 3 :1) +15% concentrate (C). Parameters of N intake, N digestible, N retention, biological value and net nitrogen utilization were observed. The result indicated that C treatment was the best of nitrogen balance with nitrogen retention was 14,5 g/d. This result was consistent with the highest dry mater intake of treatment C. This study suggests that PE goats which are given treatment C resulted the best nirogen balance.

NISBAH HARA MIKRO TERHADAP KALIUM DAUN BEBERAPA VARIETAS PADI (Oryza sativa L.) PADA DUA JENIS TANAH Yustisia Yustisia; Tohari Tohari; Dja’far Shiddieq; Subowo G.
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Pot experiment was conducted at the experimental farm of Agriculture Faculty, Gadjah Mada University, Yogyakarta and aimed to investigate the effect of soil types, varieties and and their interaction on Fe/K, Mn/K, Cu/K and Zn/K leaf, growth, leaf protein and grain yield of rice. The experiment was set up in a 2 x 6 factorial pat- tern randomized completely block design with three replications. First factor was two soil types viz. Vertisols and Inceptisols, second factor was rice varieties viz. Cimelati, Pandan Wangi, Ciherang, Cisokan, Widas and IR 64. The result revealed that the Fe/K, Cu/K and Zn/K ratios in rice leaf was significantly affected by soil types and rice varieties. The interaction of soil and rice varieties significantly affected the leaf ratios of Fe/K, Cu/K and Zn/K, crop growth rate (CGR) and grain yield, but it was not significantly affect the Mn/K ratio and leaf protein. The leaf ratios of Fe/K, Cu/K and Zn/K, CGR and grain yield in Vertisols were significantly higher than those in Inceptisols, while Mn/K ratio and leaf protein was significantly higher in Inceptisols. The highest of grain yield was achieved by Pandan Wangi whereas the lowest of grain yield was achieved by IR 64. The lowest of grain yield was achieved by IR 64 in Inceptisols. It was affected by an imbalance of Mn/K ratio and highest of leaf protein. It could be due to the effect of Inceptisols native soil properties (lower pH, higher Mn and K) and specific characteristics of IR 64 (more responsive to low pH, higher NH + uptake). It was also may be caused by indirect effect of urea excess and KCl fertilizers on reducing of rhizosphere pH. The Mn/K ratio was important nutrient imbalance in Inceptisols soil and rice plant. The finding of this study suggests that the research in depth which is focused on Mn/K ratio balance in Inceptisols is needed, i.e using urea and KCl application in proper rate, using another source of nitrogen and potassium fertilizers, and using specific of varieties (less responsive to NH + and more responsive to NO -).

EFEKTIVITAS WAKTU PENGAMBILAN DAN PENGUKURAN CONTOH GAS RUMAH KACA PADA PENGELOLAAN AIR DI LAHAN SAWAH Anggri Hervani; A. Wiharjaka
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The agricultural sector is one of the greenhouse gases (GHG) sources and sinks. Inventory of GHG emis sionsintheagriculturalsectorisdonebyapplyingtheprincipleof measurable,reportable,verifiableorMRV, thusGHGmeasurement resultsarenotbiasedorunder/overestimate, reliable,andcheaper.The researchaimedto assess the most effective retrieval sampling time and measurement of greenhouse gas at different water manage mentsinricefield.Thefirstfactortreatmentwasthemanagementofirrigationwaterintheformsofcontinuous andintermittentirrigationusingarandomizedblockdesignwhichwasreplicatedthreetimes.Thesecondfactor treatmentwasthegassamplingtimeat6–7,9–10,12–13,15–16,and18–19.ObserveddatawasCO andCH fluxes.TheresultsshowedthatintermittentirrigationcouldreduceCH emissionsmorethan27%comparedto continuousirrigation.BasedonPearsoncorrelationvalue,samplingtimeandmeasurementofCO andCH were the most effective at 15–16 with correlation values of 0.901 and 0.984, respectively.

PRODUKSI BIODIESEL DARI BIOMASSA Chlamydomonas sp. ICBB 9113 DIKULTIVASI MENGGUNAKAN MEDIA YANG MURAH: EFEKTIFITAS DARI BEBERAPA METODE EKSTRAKSI Patmawati Patmawati; Bustami Ibrahim; Iriani Setyaningsih; Untung Sudadi
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The main challenges to overcome in biodiesel production from microalgae are lower oil yield, as compared to those derived from plant and animal biomass, and expensive culture media. This work was aimed to compare the effectivity of three extraction methods differed in solvent used, e.g. n-hexane (N-hex), ethanol (Eth), and mixture of chloroform-methanol-water (CMW), to extract crude lipid and biodiesel from dry biomass of Chlamydomonas sp. ICBB 9113. This microalgae was cultivated in a cheap culture media using N and P soil fertilizers as nutrient sources. The results showed that, by using N-hex, Eth, and CMW methods, it could be extracted, respectively, 0.06%, 4.51%, and 20.45% crude lipid, and 384.2, 1333.8, and 2430.6 mg/100g biodiesel. The fatty acid profile of the studied microalgae biomass was: C8:0 (0.11%), C10:0 (0.09%), C14:0 (7.70%), 16:0 (1.39%), C18:0 (0.85%), C14:1 (5.12%), C16:1 (7.09%), C18:1 (8.28%), C18:2 (12.80%), and C18:3 (42.57%). Fatty acid characterization showed that Chlamydomonas sp. ICBB 9113 was dominated by C18: 3 and C16:0. Therefore, these microlagae were suitable to be used as raw material for biodiesel production to substitute the conventional fuel.

SKRINING PLASMA NUTFAH PADI TERHADAP CEKAMAN KEKERINGAN Rina Hapsari Wening; Untung Susanto
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Rice germplasm is a source of genetic traits in the development of high yielding varieties of rice. This study aims to obtain drought tolerant trait of rice germplasm so that it could be used as a donor in the development of drought tolerant rice. The experiment was conducted from April to September 2010 in the Experimental Site of Indonesian Agriculture Environment Research Institute, Jakenan, Pati, Jawa Tengah using Randomized Block Design (RBD) with three replications. The material used is 64 accessions of rice germplasm and 6 varieties of checks. The result showed that the character of maturity age and the number of filled grain per panicle have posi- tive correlation with grain yield per plant. Four accessions namely, Pelempung Jambi, Padi Jarum Emas, Padi Kuning, Cempo Abang Ner and Botel, have been selected tolerant to drought stress and high yielding based on the character of grain yield per plant, maturity age, and the number of filled grain per panicle. Based on rolling and drying leaf on heading phase, the fifth accessions have tolerance to drought stress with score 1–5. Fifth accession can be used as donor on development of drought tolerant rice.

PREVALENSI KOLIBASILOSIS PADA AYAM BROILER YANG DIINFEKSI Escherichia coli DENGAN PEMBERIAN BIOADITIF, PROBIOTIK, DAN ANTIBIOTIK Ade Erma Suryani; Mohammad Faiz Karimy; Lusty Istiqomah; Ahmad Sofyan; Hendra Herdian; Michael Haryadi Wibowo
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The purpose of this research was to study the efficacy of bio-additive (a mixture of Lumbricus rubellus meal extract, Morinda citrifolia leaf extract and lactic acid bacteria ), probiotics, and antibiotics on the prevalence co- libacillosis and healthy status of broiler that infected by E. coli strain Avian Pathogenic Escherichia coli (APEC). A total of 140 DOC were distribute randomly into 20 units of cage, each filled with 7 chickens were arranged in a completely randomized desig . Twenty cages were divided into 5 group , each treatment consisted of 4 replicates. The treatment group consisted of treatment A = infection of E. coli positive control), B = infection of E. coli + bio- additiv , C = infection of E. coli + probiotic , D = infection of E. coli + antibiotic , E = no E. coli infection negative contro). Feed base on corn- soybean is formulated as a basal fee . The experiments were conducted for 35 days, on day 21 chickens infected E. coli. ND vaccination is given at the age of four days and 15 days. The observed parameters were changes of macroscopic, isolation and identification of E. coli, changes in histopathology, blood profiles and antibody titer against ND. Results showed the prevalence colibasillosis on treatment B resulted in the lowest rate (33.3), results in the isolation and identification of chicken with positive clinical symptoms kolibasilosis infected APEC, and microscopic observations showed histopathological changes in the organs pancreas, heart, liver, and exchanges fabrisius lung. The results of the blood profile analysis showed the presence of the body’s defense mechanism against bacterial infectio , which is evident from the number of leukocytes in treatment A and C are higher tha treatment E (P> 0.0 ), red cell count treatment D higher than E treatment (P> 0.0 ), and total of Hb treatment A higher than treatment E P> 0.0 ). Based on the overall health status, it can be concluded that the administration of bioaditif decrease the prevalence o colibasillosis 67.7 % .

PENENTUAN MASA TANAM KEDELAI BERDASARKAN ANALISIS NERACA AIR DI KABUPATEN KONAWE SELATAN, SULAWESI TENGGARA Musyadik Musyadik; Agus salim; Tri Marsetyowati
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

South Konawe is a regency in Southeast Sulawesi which is dominated by dry land around 42,151 ha. Out of this area, only 2,100 ha was utilized for soybean planting with yield of 1.051 t/ha. One of problems for this low productivity is not optimal use of the technology in terms of usage time of planting. From the analysis of the water balance sheet, it shows that the surplus occurs in January, March, April, May, June, and July. However, soybean can only be planted in May because it meets the water requirement for soybean that is 250–300 mm/month. On the other hand, deficit months occur in February, August–December.

TEKNIK PENGEMASAN DALAM TRANSPORTASI UNTUK MEMPERTAHANKAN MUTU BUNGA POTONG ALPINIA (Alpinia purpurata) Tri Marsetyowati
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Alpinia purpurata flower is one type of cut flower with great opportunity as an exported flower for its attrac- tive shapes and colors. In order to gain maximum benefit from cut flowers as ornaments, post-harvest treatments require attention. One of those treatments is packing which aims to maintain the quality of cut flowers during transport or shipping. The objectives of this study were to determine the type of primary packaging material and the most suitable placement inside the packaging during transport in order to conserve the quality. Factorial Completely Randomized Design with 3 replications was used. To find out the effects of the treatments, analysis of variance was done using F-test. Difference among treatments was tested using LSD at 5% significance level. The results showed that the use of PP plastic as packaging material gave a significant difference on weight loss, flowers’ freshness during transport, freshness period during demonstration time and the amount of holding solution absorbed. Packaging technique with plastic as the packaging material gave the best result with longer freshness period (7.77 days), flowers had the lowest weight loss (0.71%), the flowers seemed quite fresh (score of 4) and were able to absorb more holding solution (4.81ml/stalk/day) during demonstration time and therefore they remained in fresh condition. One-way orientation of placement was the best treatment at weight loss (0.77%) and the amount of holding solution absorbed (5.04ml/stalk/day).

INVENTARISASI ANGGREK EPIFIT DI KEBUN RAYA EKA KARYA BALI IG. Tirta; Sutomo Sutomo
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Inventory of epiphyte orchid species was conducted at Eka Karya Bali Botanic Garden on 26 September to17 October, 2009. The host trees were selected randomly (purposive randomized sampling), especially selected host trees for epiphyte orchid. The results showed that there were 34 known species of orchids belonging to 14 genera. Bulbophyllum was the highest number of species (seven species). Generally, epiphytic orchids grew on thin substrate with light intensity and mostly on zone IV. There were 162 species as host trees, which were dominated by Prunus puddum Roxb. ex Wall., Araucaria bidwillii Hook., Toona sureni (Blume) Merr., Syzygium racemosum (Blume) DC., and Syzygium zollingerianum (Miq.) Amsh.

KARAKTER FENOTIPIK SAPI BETINA PERANAKAN ONGOLE (PO) KEBUMEN Pita Sudrajad; Subiharta Subiharta
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.17.2.2014.283-290

Kebumen regency is designated as a village breeding centre for Ongole Grade cattle in Indonesia. Therefore, phenotypic characterization of 1,190 Ongole grade cows (1–6 years old) was conducted in Kebumen Regency. The study indicated that the average body measurement of Ongole Grade cows in Kebumen was higher and longer than the standard national body measurement set by National Standard Performance of Indonesia 7356:2008. Dominant qualitative characters of Ongole Grade cows in Kebumen was white coat colour, black muzzle, red or black vulva, straight trilateral head shape, with long horns, loose skin, and well-developed hump. Related to the potential of the Ongole Grade cow in Kebumen, efforts are needed in order to maintain the purity and the sustainability that is appropriate with agro-ecosystem and preferences of local farmers.

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Andri Rahman

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andri.agus.rahman@lipi.go.id

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Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

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Jawa barat

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