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INDONESIA
Jurnal Ilmu Pertanian Indonesia
Published by Institut Pertanian Bogor
ISSN : 08534217     EISSN : 24433462     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Artikel yang dimuat meliputi hasil-hasil penelitian, analisis kebijakan, dan opini-opini yang berhubungan dengan pertanian dalam arti luas, seperti agronomi, ilmu tanah, hama dan penyakit tanamam, ilmu kehewanan, kedokteran veteriner, keteknikan pertanian, teknologi industri, teknologi pangan, ilmu gizi, keluarga dan konsumen, biometri, biologi, klimatologi, peternakan perikanan, kelautan, kehutanan, dan sosial-ekonomi pertanian yang telah dipertimbangkan dan disetujui oleh Dewan Editor. Keterangan mengenai peralatan, pengamatan, dan teknik percobaan akan diterima sebagai artikel CATATAN. Pedoman Penulisan dicantumkan pada setiap terbitan tercetak. Indeks Penulisan dan subjek serta daftar penelaan (mitra bestari) dicantumkan di tiap nomor terakhir pada setiap volume.
Arjuna Subject : -
Articles 19 Documents
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Search results for , issue "Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia" : 19 Documents clear
Dendrochronological study of Cedrus deodar Grown at Kumrat valley Dir Upper KPK, Pakistan: Evaluation of Tree Age and Increment Based on Increment Core Sajad Sajad; Jawad Jawad; Ikram ul Haq
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.201

Abstract

The present research was conducted for tree-rings study in a mixed stand of Himalayan Species Credur deodar in Kumrat valley Dir Upper KPK, Pakistan. Tree-rings analysis was related to the counting of tree ring. Random sampling method was used, and 70 sample trees were selected, tree heights and diameters were measured, and increment cores were collected from each sample-tree diameter at the height at breast point to be analyzed and studied in the laboratory. The objectives of the study were to determine the exact age of tree and to evaluate total and mean annual increment in the basal area and tree volume based on the increment cores. Regression models revealed the impacts of tree age on the basal area and tree-volume increment. Results showed the minimum basal-area increment was 0.0028 m2 at the age of 10 years, the maximum basal-area increment was 2.658 m2 at the age of 60 years, with mean was 0.95±0.677 m2 at the age of 36 years and R2 was 0.9593. The maximum tree-volume increment was 1.42 m3 at the age of 60 years, the minimum tree-volume increment was 0.010 m3 at the age of 10 years, with mean was 1.35±0.96 m3 at the age of 36 years and R2 was 0.9167. The minimum mean annual-basal area increment was 0.0027 m2, the maximum mean annual-basal area increment was 0.048 m2, and the average increment was 0.022±0.010 m2. The maximum mean-annual increment in tree volume was 0.068 m3 at the age of 60 years, the minimum mean-annual increment was 0.0039 m3 at the age of 10 years, with mean was 0.032±0.014 m3 at the age of 36 years and R2 was 0.8903. Results showed a strong positive relationship of tree age with area and volume increment. Keywords: Basal area, increment, tree age, volume
Hasil Padi dan Kelimpahan Gulma dengan Aplikasi Jenis Pupuk Berbeda di Lahan Kering Tadah Hujan pada Musim Kemarau Yugi Rahayu Ahadiyat; Sisno Sisno
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.259

Abstract

Rice yield and proper weed control need to be increased through an environmentally friendly agricultural system approach in rainfed land during the dry season by reducing the dosage of synthetic fertilizers. This study aims to determine the effect of different fertilizer applications on rice yield and weed abundance in rainfed land during the dry season. The study used a split-plot design, with the main plot of rice variety, i.e., Situ Bagendit and IR-64, and subplots of fertilizer, namely synthetic fertilizers (N, P, K), organic fertilizers + P60 + ½ dose of synthetic fertilizers, organic fertilizers + PGPR + ½ dose of synthetic fertilizer and organic fertilizer + P60 + PGPR + ½ dose of synthetic fertilizer with three replications. The variables observed were rice yield components, namely panicle length, total empty grain and content per panicle, grain weights per hill, effective plot and hectare, 1000 grain weight, harvest index, and weeds summed dominance ratio (SDR). The synthetic fertilizers and three various organic fertilizers, biological fertilizers, and synthetic fertilizers gave different results on the SDR of weeds. The weeds of Sphenoclea zeynalica and Cyperus difformis showed consistent dominance with higher SDR than other weeds, i.e.,> 15 and > 10, respectively. The application of organic and biological fertilizers with half the recommended dosage of the synthetic fertilizers is equivalent to applying the recommended dosage of synthetic fertilizers on rice yield during the dry season on the rainfed dryland with low rainfall intensity and a low yield of 1.3–1.7 t/ha. Keywords: biological fertilizer, inorganic fertilizer, organic fertilizers, rice, weeds
Daya Tarik Keanekaragaman Burung di Jalur Hijau Jalan Kota Yogyakarta Retno Nur Utami; Siti Nurul Rofiqo Irwan; Ahmad Sawardi; Alia Bihrajihant Raya
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.267

Abstract

Urban greenery plays an important role in providing a biodiversity habitat of vegetation and birds as biotics in the urban ecosystem. The biodiversity can show attractions in Yogyakarta city as a tourism destination in Indonesia. This research was conducted on three types of roads of the secondary artery (SA), secondary collector (SC), and local (L). The bird diversity depended on tree greenery as its habitat and food source. This research aimed (1) to analyze bird diversity on the roadside greenery in Yogyakarta City, and (1) to reveal the attraction of birds on the urban greenery as a tourism attraction. The sample units were selected by the method of stratified random sampling. The bird observation was used by the method of transect line conducted on the three categories of roads in Yogyakarta City. The bird diversity was analyzed by Shannon-Wiener's (H') index diversity, and bird activity was descriptively analyzed. The number of birds found in the greenery was 685 belong to 12 species. The diversity indexes (H') of the birds on the roads of the secondary artery (SA), secondary collector (SC), and local (L) categories were 0.697 (low), 1.001 (medium), and 1.246 (medium). The index shows the equal quality of the bird attractions in the city. The low-medium of index value should be improved to reach a high H'. The improvement should be carried out by landscape planning for urban tourism through planting food source trees or habitat trees for birds on the urban greenery of Yogyakarta. The strength of the urban attraction of birds was also supported by species diversity, conservation status, bird activity, habitat trees, and the ecological function of urban trees on the roadside greenery of Yogyakarta city. Keywords: bird diversity, roadside greenery, urban attraction, urban greenery, Yogyakarta
Perubahan Penggunaan Lahan dan Karakteristik Hidrologi DAS Citarum Hulu Muhammad Yahya Fadhil; Yayat Hidayat; Kukuh Murtilaksono; Dwi Putro Tejo Baskoro
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.213

Abstract

The Citarum watershed is one of the priority watersheds due to problems of critical land, flooding, erosion, and sedimentation which continue to increase every year. As the main catchment area that contributes to maintaining the availability of water resources, the upstream Citarum watershed continues to experience a reduction in forest and an increase in built-up land. A research aimed to analyze land use changes to the hydrological characteristics was carried out at the Watershed. The methods used include interpretation of SPOT image data, analysis of land use changes, and determining the values of KRA and KAT. The results of the analysis of land use change conditions in 2009-2018 saw a reduction in forest area (-5.5%), rice fields (-17.4%), and shrubs (-60.8%). Land use increased in built up land (39.7%), dry land agriculture (13%), plantations (6.4%), and open land (95.5%). The highest discharge occurred in 2010 at 606,3 m3/second and the lowest discharge in 2012 was 4,3 m3/second. The KRA and KAT values of the Upper Citarum watershed were moderate and very high. The multiple linear regression model of the relationship between land use changes that affect river flow fluctuations is Y = 2380.5 + 0.9 rainfall -206.5 forest + 6.1 build-up area -31.8 dryland agriculture + e. Other factors that influence the increase in river discharge are the slope of land slopes, rainfall patterns, and inadequate land use methods. Keywords: hydrological characteristics, landuse change, Upper Citarum watershed
Seleksi Generasi F2 untuk Mendapatkan Jagung dengan Kandungan Antosianin Hari Isnaini Adrianto; Eries Dyah Mustikarini; Gigih Ibnu Prayoga
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.301

Abstract

Purple corn is one type of corn plant with high anthocyanin content, which is good for health. Hybridization activities can obtain purple corn with anthocyanin content and yield power of 9.85 tons/ha with selection. This study aims to select F2 generation corn strains that have a purple color. The genetic materials were planted without replicated design. The lines used are derived from the F2 seed results of a cross between purple corn of Marassempulu and white corn of Magetan. There were 120 plant samples. The results showed about 24 lines that had purple seeds in the F2 generation. The selection results with a selection intensity of 50% obtained 12 lines of corn which could be continued for the next generation, namely F2-PxU11-14, F2-PxU11-20, F2-PxU11-21, F2-PxU6-15, F2-PxU11-2, F2-PxU6-16, F2-PxU11-13, F2-PxU11-11, F2-PxU6-5, F2-PxU6-8, F2-PxU11-6, and F2-PxU11-16. Kata kunci: corn, free-based, hybridization, purple, selection
Produksi dan Pemurnian Xilooligosakarida dari Xilan Tongkol Jagung menggunakan Xilanase Streptomyces P26B4 dan Khamir IP4 Andika Susantri; Titi Candra Sunarti; Anja Meryandini
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.309

Abstract

Xylooligosaccharides (XOS) are sugar oligomers from xylan that can be used as prebiotics to improve digestive tract health. Xylan can be extracted from corncobs which are a by-product of agriculture. The purpose of this study was to produce XOS through hydrolysis of corn cobs xylan using Streptomyces P26B4 xylanase. The products of hydrolysis also consisted of monomer xylose; for that xilooligosaccharides were purified using yeast IP4. The xylan hydrolysis products are quantitatively analyzed based on the value of reducing sugars and degree of polymerization (DP), strengthened qualitatively with TLC. Sugar component was analyzed after the addition of yeast by HPLC. P26B4 xylanase isolates had the highest activity on the 7th day incubation, pH 5,5 buffer citrate and temperature of 50°C. The lowest DP value of xylan hydrolysis was 2.49 at a concentration of 6%, and the 24th hour of incubation. TLC chromatograms showed that xylose and XOS products were produced. Purification of XOS at 6%, showed a decreasing in the area of xylose before and after receiving yeast respectively 1.87% and 1.41%.Therefore, yeast IP4 has the potential to consume xylose amnd purify the XOS. Keywords: corncobs xylan, IP4 yeast, purification, Streptomyces P26B4 xylanase, xylooligosaccharides
Produksi Rumput Laut (Gracilaria verrucosa) Berdasarkan Perbedaan Jarak Tanam dan Bobot Bibit di Tambak Desa Tlogosadang, Kecamatan Paciran, Kabupaten Lamongan Norma Aprilia Fanni; Agung Pamuji Rahayu; Endah Sih Prihatini
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.177

Abstract

This study aims to determine the highest production of planting Gracilaria verrucosa wich is cultivated in the ponds of Tlogosadang Village, Paciran Sub-District, Lamongan District by treating different spacings and initial seed weights. The cultivation method used was longline with a distance of 25 cm between longlines. The treatments were given in the form of spacings of 10 cm, 20 cm, and 30 cm, while the treatments of seed weights were 50 g, 100 g, and 150 g. Treatments were carried out in a pond measuring 20x5 m with a water depth between 90-102 cm depending on the tides. Sampling was conducted every 7 days for 50 days of maintenance by weighed, controlled, and measurement water quality. Before planting seaweed, pond preparation were carried out which included drying, liming, fertilizing to filling the water. This study used a Completely Randomized Factorial (CRF) Design consisted of two factors, namely spacing and seed weight, each with three levels. Data analysis used One-Way ANOVA showed that the treatment of spacing and seed weight gave a very significant difference (P <0.01), so it was continued with the Orthogonal Polynomial Test to see trends. The test results showed that the highest seaweed production was found at a spacing of 20 cm and a seed weight of 50 g, namely 2423.7 g/m. The water quality as a support for the growth of seaweed measured during the study showed that the waters ware classified as good and suitable for the cultivation of Gracilaria verrucosa seaweed. Keywords: Gracilaria verrucosa, longline, seaweed, seed weight, spacing
Peranan Pergerakan Air Dalam-Tanah dalam Menurunkan Aliran Permukaan Enni Dwi Wahjunie; Dwi Putro Tejo Baskoro; Suria Darma Tarigan
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.292

Abstract

The main cause of flooding and erosion that creates critical land in various regions in Indonesia is surface runoff. The surface runoff will occur if rainfall exceeds the capacity of soil water absorption (infiltration capacity). The soil management of each land use could improve the infiltration capacity. The water movement both on the surface and in the soil determines the water infiltration. This study predicts surface runoff based on the infiltration rate of various land uses and rainfall in the Ciliwung Watershed. A series of studies were performed in the upstream and middle areas of the watershed. Observations of soil properties, water movement, and rainfall were carried out in various dry land uses. The results showed that the soil's physical properties mostly determine the constant infiltration rate, which affected the water movement in the soil. The initial water content, the degree of saturation of the initial moisture content, and the soil's physical properties determine the time of constant infiltration rate. The value of constant rate infiltration and the time of its achievement determine the amount of surface runoff that occurs. Keywords: hydraulic conductivity, run off, soil management, time achievement of infiltration capacity
Keberlanjutan Pengelolaan Wisata Bahari di Pulau Pari, Kabupaten Kepulauan Seribu Neksidin; Achmad Fahrudin; Majariana Krisanti
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 2 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.2.284

Abstract

Pari Island has considerable natural resource potential, so that it has the potential to have socio-economic impacts on the local community if managed properly. The current management of Pari Island is indeed focused on the management of marine tourism, and this activity has been going on for a long time and has had a very significant impact on the economic sector in Pari Island. On the other hand, marine tourism activities in Pari Island are feared to have an impact on the ecological sector, so that to achieve sustainable management, good supervision and control is needed so that its potential is maintained. The purpose of this research is to see the status of socio-economic and ecological sustainability as a result of the development of marine tourism in Pari Island. The data were collected through in-depth interviews with the people of Pari Island, apart from that the data were also obtained from primary and secondary data related to socio-ecology. To assess the level of sustainability in each dimension, a Multidimensional Scaling (MDS) analysis was carried out, in order to obtain two dimensions that had a value below 75%, namely the institutional dimension which had a value of 27.3% (bad), and the infrastructure dimension which had a value. 73.3% (Enough). Meanwhile, the other 3 dimensions, such as the ecological, economic, and social dimensions, show that the value is in the continuous category, namely> 75% so that it is very supportive of the sustainability of marine tourism business management. Keywords: impact of marine tourism development, marine tourism, Pari Island, sustainable management

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