Article Per Year (5 Year)
p-Index From 2019 - 2024
1.909
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Journal of Tropical Soils Berkala Ilmiah Pertanian AGRIVITA, Journal of Agricultural Science Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Pengabdian Magister Pendidikan IPA Jurnal Teknologi Pertanian Andalas INTEGRITAS : Jurnal Pengabdian Pancaran Pendidikan
Yagus Wijayanto
Program Studi Agroteknologi, Fakultas Pertanian, Universitas Jember, Jl. Kalimantan No.37 , Kabupaten Jember
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

Published : 15 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 15 Documents
Search

 1   2 
A Study of Using QUEFTS Model for Establishing Site Specific Fertilizer Recommendation in Maize on The Basis of Farmer Fields Wijayanto, Yagus; Prastyanto, Edy
AGRIVITA, Journal of Agricultural Science Vol 33, No 3 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Nutrient Use Efficiency (NUE) of Maize is considered low. There are two important factors  responsible for this condition: (a) uniform fertilizer recommendation, (b) lack of consideration on soil variability, Indigenous Nutrient Supply and plant nutrient needs.  A method for studying low NUE and the capability of studying these two factors are urgently required. This study used Quantitative Evaluation of Fertility on Tropical Soils (QUEFTS) model. The main aim of this study was to employ and evaluate QUEFTS model for establishing site specific fertilizer recommendation in maize on the basis of farmer fields. Due to a unique characteristic of farmer field, it may be interesting to observe the pattern of soil fertility in relation to yields.  Six farmers fields and thirty soil samples were taken and analysed in the laboratory. The results showed that QUEFTS model was a valuable tool to make fertilizer recommendation by using yields as an integrated indicator. The results also showed that QUEFTS model was a promising method for establishing fertilizer recommendation for maize. The merits of model for determining Indigenous Nutrient Supply, nutrient yield limiting factors, balanced fertilizer recommendation show that QUEFTS model is a valuable tool for site specific fertilizer recommendation.   Keywords: QUEFTS, recommendation, site specific, yield
Prediksi Hasil Tanaman Padi berdasarkan Input Nitrogen dengan Simulasi Model Cropsyst di Kecamatan Mayang: Prediction of Rice Yield Based on Nitrogen Input Use Cropsyst Simulation Model in District Mayang Yoni Cahyono; Yagus Wijayanto; Bambang Hermiyanto
Jurnal Ilmu Tanah dan Lingkungan Vol 21 No 2 (2019): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1022.831 KB) | DOI: 10.29244/jitl.21.2.58-65

Abstract

Padi merupakan tanaman pangan yang paling banyak dikonsumsi oleh penduduk Indonesia. Produksi padi di Indonesia belum dapat memenuhi kebutuhan penduduknya, sehingga impor masih menjadi solusi utama. Kabupaten Jember merupakan salah satu kabupaten penghasil padi. Banyak varietas yang ditanam untuk mendapatkan produktivtas yang tinggi khususnya di Kecamatan Mayang, namun tidak semua kondisi tanah dan manajemen lahan akan mendapatkan hasil produksi padi secara optimal, karena kondisi lahan yang berbeda-beda. Unsur Nitrogen (N) adalah unsur hara makro yang sangat penting dalam mendukung pertumbuhan dan perkembangan tanaman padi. Kelebihan dan kekurangan unsur N berpengaruh terhadap tingkat efisiensi dan hasil produksi tanaman padi. Pengembangan budidaya padi di Jember khususnya Kecamatan Mayang perlu adanya simulasi hasil produksi padi bedasarkan pemupukan N dan kondisi lahan sehingga dapat dilihat potensi lahan untuk mengembangkan padi dan dapat dijadikan referensi untuk rekomendasi pemupukan N. Cropsyst adalah program komputer yang berfungsi untuk menganalisis produktivitas berdasarkan kondisi dan manajemen lahan. Input data tanah, iklim/lokasi, manajemen lahan dikalibrasikan dengan pertumbuhan tanaman serta dilakukan validasi. Tujuan penelitian ini adalah untuk melihat pemanfaatan Cropsyst untuk mensimulasikan hasil produksi padi berdasarkan pengaruh perbedaan input Nitrogen di Kecamatan Mayang. Simulasi dilakukan pada 10 petani sampel dan 6 petani pembanding. Hasil simulasi menunjukkan bahwa Cropsyst dapat digunakan dalam simulasi padi berdasarkan input nitrogen di Kecamatan Mayang karena menghasilkan nilai EF sebesar 0.93 dan RMSE sebesar -47.97. Setiap penambahan pupuk oleh petani sampel akan meningkatkan hasil panen padi. Pak Leha tidak dianjurkan untuk menambahkan N karena respon tanaman padi sudah mencapai 100%. Untuk mencapai hasil padi yang optimal dan efisien maka petani harus memberikan pupuk N sesuai dengan kebutuhan tanaman yaitu ketika respon tanaman mencapai 90% dari maksimal.
PENGARUH KONSENTRASI EKSTRAK BAWANG MERAH DAN AIR KELAPA TERHADAP PERTUMBUHAN STEK PUCUK JAMBU AIR MADU DELI HIJAU (Syzygium samarangense) Nabila Nur Aisyah Al Ayyubi; Bambang Kusmanadhi; Tri Agus Siswoyo; Yagus Wijayanto
Berkala Ilmiah Pertanian Vol 2 No 1 (2019): FEBRUARI
Publisher : Jember University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (527.695 KB) | DOI: 10.19184/bip.v2i1.16148

Abstract

ABSTRACT Green Deli Rose Apples (Syzygium samarangense) has several beneficial properties in terms of usability, cultivation, health, and economy. The intensive development of green deli rose apples plants is needed given increasing demand, needs, and has bright prospects. One of the efforts to develop green deli rose apples plants is through handling plant propagation. Propagation of green deli rose apples can be done in two ways, namely generative and vegetative. Generative propagation requires a relatively long time, while vegetative propagation have difficult to growth in rooted. Shoot-cuttings is one of the vegetative propagation that has been chosen because it is easier to root than the old parts of the plant. The use of plant growth regulators (PGR) is needed to stimulate green deli rose apples shoot-cuttings rooting. Alternative PGR is giving shallot extract and coconut water as a substitute for synthetic auxin which has a relatively expensive price. The purpose of this study was to determine the combination of the effect of the concentration shallot extract and coconut water, as well as to find out the concentration of shallot extracts and coconut water which was most influential on the growth of shoot-cutting of green deli rose apples. The extract shallot concentration used is control, 0,5%, 1,0%, and 1,5%. The coconut water concentration used is control, 20%, 30% and 40%. Data obtained next analyzed and tested using DMRT α 5%. The result showed te best treatment combination for concentration shallot extract of 0,5% and coconut water of 20%. Keywords: greend deli rose apples, shoot-cutting, shallot extract, coconut water ABSTRAK Jambu air madu deli hijau (MDH) (Syzygium samarangense) memiliki beberapa sifat yang menguntungkan baik dari segi kegunaan, budidaya, kesehatan, maupun ekonomi. Pengembangan tanaman secara intensif diperlukan mengingat permintaan dan kebutuhan yang semakin meningkat, serta memiliki prospek yang cerah. Salah satu usaha pengembangan tanaman yaitu melalui penanganan perbanyakan tanaman. Perbanyakan dapat dilakukan dengan dua cara yaitu generatif dan vegetatif. Perbanyakan secara generatif membutuhkan waktu yang relatif lama, sedangkan perbanyakan vegetatif memiliki kendala sulit membentuk perakaran. Stek pucuk merupakan salah satu perbanyakan vegetatif yang banyak dipilih karena lebih mudah berakar dibandingkan bagian tanaman tua. Penggunaan zat pengatur tumbuh (ZPT) diperlukan untuk merangsang perakaran stek pucuk jambu air MDH. Alternatif ZPT yaitu pemberian ekstrak bawang merah dan air kelapa sebagai pengganti auksin sintetis yang memiliki harga relatif mahal. Penelitian ini bertujuan untuk mengetahui kombinasi pengaruh konsentrasi ekstrak bawang merah dan air kelapa terhadap pertumbuhan stek pucuk jambu air MDH, serta mengetahui konsentrasi ekstrak bawang merah dan air kelapa yang paling berpengaruh terhadap pertumbuhan stek pucuk jambu air MDH. Konsentrasi ekstrak bawang merah yang digunakan antara lain kontrol, 0,5%, 1% dan 1,5%. Konsentrasi air kelapa yang digunakan antara lain kontrol, 20%, 30%, dan 40%. Data yang diperoleh selanjutnya dianalisis dan diuji menggunakan DMRT α 5%. Hasil penelitian menunjukkan kombinasi perlakuan terbaik untuk konsentrasi ekstrak bawang merah dan air kelapa adalah konsentrasi 0,5% dan air kelapa 20%. Kata Kunci: jambu air madu deli hijau, stek pucuk, ekstrak bawang merah, air kelapa
Site Specific Nitrogen Management Simulated by CropSyst Model under Different Inputs of Nitrogen Fertilizer Yagus Wijayanto
JOURNAL OF TROPICAL SOILS Vol 15, No 3: September 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i3.229-235

Abstract

Site Specific Nitrogen Management Simulated by CropSyst Model under Different Inputs of Nitrogen Fertilizer (Y Wijayanto): Site Specific Nutrient Management (SSNM) has been suggested as the only means for increasing productivity of crops and minimizing the environmental impacts. Despite of this, it is also widely recognized that compared to uniform application, SSNM provides a significant challenges related to the level of management. This is due to the fact that SSNM relates to the management of field / site (or fields / sites) and considers also the spatial and temporal component of factors leading to crop production. A method is urgently required and the most appropriate one is crop model. This study was aimed at using  CropSyst to model yields due to the difference in N applications  and its implementation for SSNM. The study area was located at Jenggawah Village, Sub-District Jenggawah, Jember Regency. Thirty soil samples were taken and six farmer’s fields were chosen for the purpose of modeling. Interview was conducted to obtain the information about the management of farmer’s fields. Yields in each farmer’s fields were used as an integrated indicator. The results suggested that the predicted yields at farmer’s fields were in agreement with those in reality. Simulated yields  based on  different amount of N inputs showed yields were proportional with different N inputs. This study concluded that there do exist a significant amount of potential applications of CropSyst for Site Specific Nitrogen Management
Non-Destructive Measurement of Rice Amylose Content Based on Image Processing and Artificial Neural Networks (ANN) Model Tri Wahyu Saputra; Yagus Wijayanto; Suci Ristiyana; Ika Purnamasari; Wildan Muhlison
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.231-241

Abstract

The purpose of this study was to develop a method of measuring the amylose content of rice using image processing techniques and an Artificial Neural Network (ANN) model. The rice samples came from six varieties, namely Way Apo Buru, Mapan P05, IR-64, Cibogo, Inpari IR Nutri Zinc, and Inpari 33. The amylose content was measured by laboratory tests and the color intensity was measured based on the RGB (Red, Green, Blue). The ANN model will correlate the RGB color intensity as input with the amylose content as the output. The ANN model used is backpropagation type with 3 input layer nodes and 2 hidden layers with 3-5-5-1 architecture. Variations in the training model used are 27 variations of the activation function. The amount of data used for model training of 30 data while for validation of 12 data. The best ANN model is determined from the high value of accuracy (100%-MAPE) and the value of coefficient of determination (R2). The results showed the best network architecture on the activation function purelin-logsig-tansig. The R2 value on the best training and validation results of 0.98 and 0.66 while the accuracy values for the best training and validation results of 98.15 and 66.82. The validation results show that the developed non-destructive method can be used to quickly and accurately measure the amylose value of rice based on RGB color value. The test results show that the non-destructive method developed cannot be used to measure the amylose content of rice quickly and accurately based on the RGB color intensity, so it needs further development. Keywords:   Amylose, Artificial neural networks, Image processing, Rice
Processing Pengolahan Limbah Kotoran Sapi Menjadi Pupuk Organik untuk Perbaikan Kualitas Lingkungan Desa Seputih Kecamatan Mayang Kabupaten Jember Ika Purnamasari; Suci Ristiyana; Yagus Wijayanto; Tri Wahyu Saputra
Jurnal Pengabdian Magister Pendidikan IPA Vol 5 No 1 (2022): Januari - Maret
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.701 KB) | DOI: 10.29303/jpmpi.v5i1.1357

Abstract

Seputih Village is one of the villages in Mayang District, Jember Regency. In addition to the agricultural sector, the livestock sector is also the mainstay of the village, namely cattle with almost 70% of households owning livestock. The high number of cattle in the community causes an increase in the amount of livestock manure produced. One solution that can be applied to reduce this waste is by processing manure into solid organic fertilizer so that the community service program implemented in Seputih Village is the manufacture of solid organic fertilizer from cow dung that can be utilized by the community on agricultural land. Activities carried out to achieve the objectives include coordination meetings of the lecturer team with village heads, farmers and ranchers; potential survey; training on the manufacture of solid organic fertilizers as well as monitoring and evaluation. The community service activity was enthusiastically welcomed. The community directly received information on the importance of handling cow dung waste and had experience in making organic fertilizer workshops. Solid organic fertilizer can be used after two weeks of the fermentation process.
Perlindungan Buah Jambu Kristal dari Serangan Lalat Buah Sebagai Optimalisasi Kualitas di Desa Tamanagung Kecamatan Cluring Kabupaten Banyuwangi Tri Wahyu Saputra; Wildan Muhlison; Suci Ristiyana; Ika Purnamasari; Yagus Wijayanto
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 4 (2022): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v6i4.10602

Abstract

Tamanagung Village, Cluring District, Banyuwangi Regency is one area that cultivates crystal guava fruit for markets in areas in East Java and even big cities in Indonesia. However, one of the difficulties for farmers is to maintain good quality crystal guava and meet market criteria such as crunchy texture, sweetness, slightly runny, no spots, not rotten and free from maggots. Crystal guava fruit can be sold for Rp. 5,000.00 to Rp. 6,000.00 per kilogram but can drop dramatically if there is a decrease in fruit quality. In this service, fruit cover was chosen as this technology to protect crystal guava fruit (Psidium guajava) from fruit fly (Bactrocera spp.) attacks. The focus of this service program is the use of technology that is simple but can be applied quickly by farmers and has a real impact on cultivation results. Protection provides better yields such as avoiding fruit defects, is of higher quality and will increase the selling value of crystal guava fruit. In the end, this program will be able to increase the economic welfare of crystal guava farmers. It is hoped that the positive impact felt by farmers in community service locations can also be felt by farmers in other areas.
Inovasi Polybag Ramah Lingkungan Anti Pindah Tanam Dari Kompos Kotoran Sapi Di Desa Seputih Kabupaten Jember Suci Ristiyana; Ahmad Ilham Tanzil; Tri Wahyu Saputra; Ika Purnamasari; Yagus Wijayanto; Ummi Sholikhah
Jurnal Pengabdian Magister Pendidikan IPA Vol 5 No 3 (2022): Juli - September
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (920.519 KB) | DOI: 10.29303/jpmpi.v5i3.2147

Abstract

Desa Seputih merupakan salah satu desa di Kecamatan Mayang Kabupaten Jember yang terdiri dari enam Dusun antara lain Dusun Krajan, Pandian, Sumberjeding, Sumberwadung, Tetelan, dan Dusun Wetan Kali. Kondisi geografis yang mendukung seperti kondisi tanah, iklim, kebudayaan masyarakat lokal dengan mayoritas sebagai petani menjadikan wilayah Seputih memiliki keunggulan di bidang pertanian. Sektor peternakan juga menjadi unggulan desa yaitu ternak sapi dengan jumlah hampir 70% kepala keluarga yang memiliki ternak. Tingginya ternak sapi masyarakat juga akan menyebabkan meningkatnya limbah yang dihasilkan seperti kotoran ternak. Salah satu solusi yang dapat diterapkan guna mengurangi limbah tersebut yaitu dengan mengolah limbah kotoran sapi menjadi kompos yang nantinya dapat dimanfaatkan oleh masyarakat di lahan pertanian.. Harapan dari program ini dapat memberikan solusi bagi masyarakat dalam pengelolaan limbah kotoran ternak secara terpadu sehingga dapat memberikan dampak positif baik lingkungan, ekonomi, maupun sosial budaya
Project-Based Learning Using Virtual Group in Implementation of Geography Learning Strategy at Curriculum 2013 Yagus Wijayanto; Elan Artono Nurdin; Bejo Apriyanto; Fahmi Arif Kurnianto; Fahrudi Ahwan Ikhsan
Pancaran Pendidikan Vol 6, No 3 (2017)
Publisher : The Faculty of Teacher Training and Education The University of Jember Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (318.057 KB) | DOI: 10.25037/pancaran.v6i3.55

Abstract

This study aims to test the model of project based learning by using a virtual group on the results of learning geography of high school students. The subjects of this study were students of Class X Senior High School 1 Lumajang even semester of academic year 2016/2017 consisting 2 classes. The X-IIS 1 class is set as the experiment class and the X-IIS 2 class as the control class. This is because students in both classes have the same or equivalent abilities based on middle test scores. This research is a quasi-experiment research with Non-Equivalent Control Group Design design. Instrument assessment of learning outcomes using essay tests. Assessment results data that are then analyzed using test-test with the help of SPSS 16.0 for Windows program.The results of this study indicate that there is a significant effect of project-based learning model using the virtual group to the students' geography learning outcomes. Based on pretest and post test differences shows that the mean score of the experimental class gain score (45,63) is higher than control class (30,02). The result of data analysis using independent sample t test showed that project based learning model obtained probability score (p-level) smaller than 0.05 with sign 0,00. The conclusion in this study that the learning model of project-based learning using the virtual group on the results of learning geography of high school students.
Perbedaan Karakteristik Sebaran Spasial Hujan di Kabupaten Jember Menggunakan Metode Inverse Distance Weighted (IDW) dan Poligon Thiessen Roni Bahtiar; Yagus Wijayanto; Subhan Arif Budiman; Tri Wahyu Saputra
Berkala Ilmiah Pertanian Vol 5 No 1 (2022): Februari
Publisher : Jember University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.326 KB) | DOI: 10.19184/bip.v5i1.34423

Abstract

Rain is one of the elements that make up the climate. Rainfall in an area can be influenced by many factors. The rainfall data at a point in the rain station only represents the area at that point. Interpolation is done to present the rainfall data so that it can be easily understood. This study was conducted to determine the characteristics of the spatial distribution of rain in Jember Regency using the Thiessen Polygon and Inverse Distance Weigthed (IDW) methods and to determine the best method between the two. The data used in this study are the annual average rainfall data that has been obtained Perusahaan Daerah Perkebunan (PDP) Kahyangan Jember, Dinas PUPR Sumber Daya Air, and PTPN XII. Data processing is carried out using the ArcGIS program, and then a rainfall distribution map is made. The RMSE (Root Mean Square Error) calculation was carried out using the IDW method using 5 power levels, namely 0.5, 1, 2, 3, and 4. The results of calculations using the Thiessen polygon method produce a characteristic distribution of rainfall in which the rainfall decreases with the area moving south towards the coast. The Inverse Distance Weighted (IDW) method shows diversity with the lowest value being 94.71 mm and the highest being 406.92 mm per year. The power value 4 shows the RMSE calculation result of 0.00026 which is the lowest value.
Co-Authors Agung Sih Kurnianto Ahmad Ilham Tanzil Arthur Frans Cesar Regar Arthur Frans Cesar Regar Ati Kusmiati Bambang Hermiyanto Bambang Kusmanadhi Bejo Apriyanto Distiana Wulanjari Edy Prastyanto Elan Artono Nurdin Fahmi Arif Kurnianto Fahrudi Ahwan Ikhsan Ika Purnamasari Ika Purnamasari Indah Ibanah Lenny Widjayanthi Moch. Reza Wahyu Abdilah Muhammad Aldian Dwi Kustianto Nabila Nur Aisyah Al Ayyubi Ristiyana, Suci Roni Bahtiar Sigit PRASTOWO Subhan Arif Budiman Subhan Arif Budiman Tri Agus Siswoyo Tri Ratnasari Tri Wahyu Saputra Ummi Sholikah Ummi Sholikhah Wildan Muhlison, Wildan Yoni Cahyono