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All Journal Journal of Tropical Soils AGRIKA Plumula : Berkala Ilmiah Agroteknologi Journal of Degraded and Mining Lands Management Jurnal Solum Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Tropical Horticulture Jurnal Pembelajaran dan Biologi Nukleus Agro Bali: Agricultural Journal Jurnal Agrotropika Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Agrocentrum
Bakti Wisnu Widjajani
Program Studi Agroteknologi, Fakultas Pertanian, UPN “Veteran” Jawa Timur
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Public Health Other

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IDENTIFIKASI POTENSI LONGSOR MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS DI KECAMATAN SALEM KABUPATEN BREBES Isbakhul Lail; Bakti Wisnu Widjajani; Kemal Wijaya
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 2 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (952.624 KB) | DOI: 10.33005/plumula.v7i2.24

Abstract

Based on BNPB, victims of landslides on February 22, 2018 a total of 11 people died and 7 people were missing. Landslides occur due to steep slope and geological material form in the form of marl so that it can be used as a field of sliding ground movements. Data processing Geological maps and land cover in the form of shapefiles were cliped in the study area. Determination of the level of vulnerability of landslides in the study area is based on the estimation model of landslide prone areas by the Directorate of Volcanology and Geological Disaster Mitigation / DVMBG (2004). Score = (30% x rainfall class factor) + (20% x geology) + (20 % x class Erodibility factor) + (15% x land use) + (15% x slope class factor). Based on the research carried out, the highest landslide prone areas were in the village of Ciputih with an area of 943 Ha and wanoja with an area of 684 Ha, the area under control was landslide in the village of the balance area of 893 Ha and wanoja covering an area of 708.37 Ha. While the low landslide area is in Salem village covering an area of 1193 Ha. The most influential factors were slope 46 % and erodibility 35 %. Both of them potential landslide happen.
The Effect of Rice Husk Biochar and Cow Manure on Some Soil Characteristics, N and P Uptake and Plant Growth of Soybean in Alfisol Slamet Supriyadi; Bakti Wisnu Widjajani; Eko Murniyanto
JOURNAL OF TROPICAL SOILS Vol 27, No 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.59-66

Abstract

The effect of biochar on dryland in Madura has not been fully assessed. The objective of this study was to investigate the effect of biochar and animal manure on some soil characteristics, namely water content at field capacity, CEC, N total, available P, and N and P absorption, and plant growth of soybean in Alfisol. The research was arranged on a Randomized Completely Block Design (RCBD) with four replications. Rice husk biochar was mixed with cow manure and applied at the range of 2.5 - 10 Mg ha-1. The result showed that biochar (2.5 Mg ha-1) and cow manure (7.5 Mg ha-1) improved soil characteristics, plant growth, and soybean yield by 22%. Cow manure in this study would function as a source of nutrients while rice husk biochar acted as storage of nutrients that were then released slowly to soil solution for plant uptake. It was concluded that the mixture of 2.5 Mg rice husk biochar ha-1 and 7.5 Mg cow manure ha-1 could be the best combination of soil amendments to apply in an Alfisol in Madura.
PEMBERDAYAAN PETANI MELALUI TEKHNOLOGI PENYEDIAAN DAN APLIKASI APH Streptomyces sp., Trichoderma sp. DI DESA WATES TULUNGAGUNG PADA MASA PANDEMIC COVIC 19 Penta Suryaminarsih; Tri Mujoko; Bakti Wisnu Widjajani
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol 1 (2020): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.791 KB)

Abstract

Abstract The farmers main problem in planting horticultural crops, especially chilies, is the attack of anthracnose, wilt ,pests of ground beetles and fruit flies which can often reduce crop production. Farmers in this village of Wates Tulungagung still frequently use inorganic fertilizers and chemical pesticides to control diseases and pests that attack these horticultural crops. The purpose of the Farmers Empowerment Program in Wates Village is to increase knowledge in the field of sustainable agriculture and empowerment of farmers through the technology of providing and applying Biologicals Control Agents (BCAs) Streptomyces sp., Trichoderma sp. The Participatory Action Research (PAR) method was used to encourage transformative action, by involving community members as PAR implementers in describing the types of plants treated and applying them during the Covid-19 pandemic in Wates Village, Tulungagung District. The description of the farmer groups shows that because of the decline in the price of chilies and tomatoes, they chose shallot plants to be tested. The results of socialization, training, planting of demonstration plots and monitoring evaluation show that with the Innovation method and PAR, farmers know that sustainable agriculture uses BCAs Streptomyces sp., Trichoderma sp. but have not implemented them properly, still controlling plant pests using chemical pesticides periodically, farmer groups can make and applying APH with the active ingredient Streptomyces sp., Trichoderma sp. Abstrak Masalah utama yang dihadapi petani dalam penanaman tanaman hortikultura terutama cabai adalah serangan penyakit layu .antraknosa dan hama kumbang tanah serta lalat buah yang sering dapat menurunkan produksi tanaman. Petani di desa ini masih sering menggunakan pupuk anorganik dan pestisida kimia untuk mengendalikan penyakit dan hama yang menyerang tanaman hortikultur tersebut Tujuan dari Program Pemberdayaan Petani di Desa Wates adalah meningkatnya pengetahuan di bidang pertanin berkelanjutan dan pemberdayaan petani melalui tekhnologi penyediaan dan aplikasi Agens Pengendali Hayarti (APH) Streptomyces sp., Trichoderma sp. di desa Wates Tulungagung.. Metode inovasi dan Partisipatory Action Research (PAR) digunakan untuk mendorong aksi transformatif, dengan melibatkan anggota masyarakat sebagai pelaksana PAR dalam mendeskripsikan jenis tanaman yang diobati dan mengaplikasikannya pada saat pandemi Covid-19 di Desa Wates Kecamatan Tulungagung. Gambaran kelompok tani menunjukkan bahwa karena penurunan harga cabai dan tomat, mereka memilih tanaman bawang merah untuk diuji coba ,.Hasil sosialisasi, pelatihan , penanaman bawang merah pada demplot dan monitoring evaluasi menunjukkan bahwa dengan metode Inovasi dan PAR petani mengetahui pertanian berkelanjutan menggunakan APH Streptomyces sp., Trichoderma sp. tetapi belum melaksanakan dengan benar, pengendalian hama penyakit tanaman masih menggunakan pestisida kimia secara periodic, kelompok tani sudah dapat membuat dan mengaplikasikan APH berbahan aktif Streptomyces sp., Trichoderma sp.
The potential of organomineral amendments in increasing the adsorption of lead (Pb) and cadmium (Cd) in a sandy loam soil M Ghufron Chakim; Wanti Mindari; Bakti Wisnu Widjajani
Journal of Degraded and Mining Lands Management Vol 9, No 4 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.094.3753

Abstract

Sandy loam soils contain low organic carbon and have low ion adsorption capacity. Under certain conditions, the soils contain heavy metals that are harmful to plants. Soil amendments such as biosilica and humic acid from natural sources are expected to increase the soil adsorption capacity to heavy metals. A simulation experiment consisting of two factors was conducted to explore the effectiveness of humic and biosilica, as soil amendments, in adsorbing heavy metals from soils. The first factor was biosilica dose composing 0 t ha-1 (S0), 0.5 t ha-1 (S1), 1 t ha-1 (S2), and 1.5 t ha-1 (S3). The second factor was the humic acid dose composing 0 kg ha-1 (H0), 20 kg ha-1 (H1), 40 kg ha-1 (H2), and 60 kg ha-1 (H3). The humic acid and biosilica were applied to soil contaminated with Pb and Cd. The results showed that the combination of 0.5 t biosilica ha-1 (S1) and 20 kg humic acid ha-1 (H1) significantly increased soil pH, organic C content, cation exchange capacity, and reduced the availability of Pb and Cd at 90 days after treatment. The Pb and Cd contents in plant tissue decreased from roots to grains. Humic acid treatment was more effective in absorbing Pb of 86.89-90.49% and Cd of 71.47-76.33% than other treatments.
Utilization of Anthocyanin Extracted from Pletekan (Ruellia tuberosa L.) in Determination Soil pH Putri, Olivia Damayanti; Pertiwi, Dharmi Wimi; Widjajani, Bakti Wisnu
Journal of Tropical Horticulture Vol 2, No 2 (2019): October 2019
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1571.668 KB) | DOI: 10.33089/jthort.v2i2.19

Abstract

Pletekan (Ruelliatuberosa L.) is a flowering plant that grows wild. Pletekan has blue-purple flowers, containing the anthocyanin as its specific color. Anthocyanin is an organic material that can be used as an indicator of natural acid alkali, because the color of anthocyanin can ensure specific color changes when it reacts with materials at a certain pH as well. This research aimed to utilize anthocyanin extracted from pletekan as a determinant of soil pH. The used method was maceration extraction by soaking fresh pletekan flowers using maceration solvent (methanol acidified by HCl 1%) for 2-3 days. Concentrated anthocyanin extracts needed to be diluted with extracts that had not been concentrated so that the resulted color changes were more specific. The anthocyanin mixture was applied to pH 1-12 buffer solution and in acid and alkaline soil samples. The soil was dissolved using aquadest at a ratio of 1: 2, the soil was left to settle to get water. The color change in the tested water of soil sample was adjusted to the color of the buffer solution and pH meter. Results showed that color change of soil sediment-water which was dropped by natural pH indicators needed more indicator drops such as 2-3 levels than was color changes caused by the buffer solution.
Sifat Fisik Tanah Pada Lahan Bawang Merah Di Kecamatan Gondang Nganjuk dan Kecamatan Kedungadem Bojonegoro Nugroho, Muhammad Vedo Prasetyo; Arifin, Moch.; Widjajani, Bakti Wisnu
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.20-28.2023

Abstract

Soil physical properties are those soil properties that affect plant growth and production, determining root penetration into the soil, soil water-holding capacity, drainage, soil aeration, and soil nutrient availability. Shallots prefer fertile soil, loose, and rich in organic matter. Loose and fertile soil produces large tubers. This research was conducted to determine and study the physical properties of the soil on shallots in Kecamatan Gondang, Nganjuk and Kecamatan Kedungadem, Bojonegoro. Undisturbed and disturbed soil samples were taken at depths of 0-20 cm and 20-40 cm. Determination of the sampling point using the Purposive Random Sampling method based on the type of soil and land use as well as surveying the location of observations. The selected soil types are Vertisols and Inceptisols. Each soil type is represented by 3 sampling points. The results showed that the physical properties of the various shallot fields studied had a soil texture dominated by clay and silt with a silty clay texture class, moderate bulk density, good soil porosity, soil permeability has various classifications from slow to fast, very stable. aggregate stability, and has low C-Organic material. Several parameters of the physical properties of the soil are suitable for growing shallots. However, the C-Organic content is still in the low category and it cannot meet the need for organic matter for shallot cultivation.Key words : soil physical, shallot, Vertisols, Inceptisols
Penilaian Kualitas Air pada Berbagai Penggunaan Lahan di Subsub DAS Kali Gunting Bagian Hulu Jombang Diyaurrachman, Diyaurrachman; Widjajani, Bakti Wisnu; Priyadarshini, Rossyda
Plumula : Berkala Ilmiah Agroteknologi Vol. 11 No. 2 (2023): Plumula : Berkala Ilmiah Agroteknologi
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v11i2.203

Abstract

Subsub DAS Kali Gunting merupakan bagian hilir dari DAS Brantas yang mengalir di dua Kabupaten yaitu Kabupaten Mojokerto dan Kabupaten jombang. Kegiatan pertanian memberikan masukan bahan organik yang dapat meningkatkan kandungan bahan kimia dalam air sungai sehingga diperkirakan memengaruhi kualitas air sungai. Penurunan kualitas air ditandai dengan perubahan warna air dan bau padahal sebagian masyarakat di pinggiran sungai masih memanfaatkan air di kawasan Subsub DAS Kali Gunting untuk kebutuhan sehari-hari. Penelitian ini bertujuan untuk mengkaji kualitas air untuk lahan pertanian di Subsubdas Kali Gunting bagian hulu jombang sesuai dengan Peraturan Pemerintah Nomor 82 tahun 2001 tentang Pengelolaan Kualitas Air dan Pengendalian Pencemaran Air. Wilayah pengambilan sampel dilakukan di Subsubdas Kali Gunting. Penelitian ini menggunakan metode purposive sampling (sampel tanah) dan grab sampling (sampel air). Pada pengambilan sampel tanah diambil sampel tanah utuh menggunakan ring setiap per penggunaan lahan dengan kedalaman 0-20 cm dan tanah terganggu sebanyak 3 titik per penggunaan lahan yang dikomposit sesuai kedalaman. Pengambilan sampel air 3 titik sampling. Parameter antara lain tekstur, permeabilitas, C-organik, porositas tanah, pH, DO, COD, BOD, TSS, TDS, N-amonia, N-nitrat, dan PO4-. Analisis data menggunakan uji korelasi dan regresi linear berganda. Hasil penelitian menunjukkan mutu air di Subsub DAS K. Gunting berdasarkan indeks pencemaran terendah (4,57) terdapat pada pada penggunaan lahan hutan yang termasuk dalam kategori cemar ringan. Indeks pencemaran tertinggi berkisar (5,45) terdapat pada penggunaan lahan kebun masuk dalam kategori cemar sedang. Hasil uji regresi linier berganda menunjukkan parameter BOD dan COD paling berpangaruh terhadap penurun kualitas air di Subsub DAS K. Gunting.
Analisis Kelas Kerawanan Longsor di Desa Jatiarjo, Kecamatan Prigen, Kabupaten Pasuruan Rizki, Fiorentina Cahaya; Widjajani, Bakti Wisnu; Purwadi
Plumula : Berkala Ilmiah Agroteknologi Vol. 13 No. 1: Januari 2025
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v13i1.231

Abstract

Tanah longsor adalah gerakan lapisan tanah, batuan, dan material lainnya di suatu lereng menurun ke bawah secara tiba-tiba. Kabupaten Pasuruan termasuk dalam kategori 3 besar daerah rawan longsor di Jawa Timur. Kerugian materiil akibat longsor di Kecamatan Prigen pada Februari 2019 menjadi dasar diperlukannya analisis kerawanan longsor sebagai dasar pengambilan keputusan untuk pencegahan dan mitigasi. Penelitian ini disusun untuk mengetahui dan memetakan tingkat kerawanan longsor di Desa Jatiarjo, Kecamatan Prigen, Kabupaten Pasuruan. Metode yang digunakan dalam penelitian ini adalah metode overlay di mana hasil pembobotan dari setiap parameter dihitung untuk menentukan kelas kerawanan longsor di daerah yang terdapat pada peta. Parameter penentu tingkat kerawanan longsor meliputi kemiringan lereng, curah hujan, tutupan/penggunaan lahan, jenis tanah, dan jenis batuan. Hasil menunjukkan bahwa wilayah di Desa Jatiarjo, Kecamatan Prigen dengan penggunaan berupa kebun campuran, tegalan dan semak belukar dan kelas kelerengan 25%-45% memiliki potensi kerawanan longsor. Potensi kerawanan longsor tertinggi terdapat pada wilayah dengan semua jenis penggunaan lahan dan kelas kelerengan lebih dari 45%.
Pemetaan Tingkat Bahaya Erosi Menggunakan Metode USLE di Desa Jatiarjo, Kecamatan Prigen, Kabupaten Pasuruan: Mapping of Erosion Hazard Levels Using the USLE Method in Jatiarjo Village, Prigen District, Pasuruan Regency Krisna Ananta, Kevin; Widjajani, Bakti Wisnu; Siswanto, Siswanto
Agrocentrum Vol. 3 No. 1 (2025): Agrocentrum
Publisher : Agriculture Faculty - UPN "Veteran Jawa Timur

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

Abstract

The Erosion Hazard Level is one of the important indicators of land productivity capability in agriculture. This study was conducted from July to October 2023, aiming to determine the erosion hazard level (TBE) in Jatiarjo Village, Prigen District, Pasuruan Regency, using the Universal Soil Loss Equation (USLE) method implemented in a geographic information system (GIS) with the weighted overlay method. The research results show that the TBE in this area varies from very light to very heavy scales, with the location of Erosion Hazard Levels as follows: Very Low 87.64 ha, Low 410.25 ha, Medium 393.86 ha, High 205.06 ha, and Very High 453.53 ha. Shrubland has a very high erosion value compared to other land uses, as the shrub cover is not strong enough to withstand the rain energy, causing very high erosion.
Analisis Status dan Kelas Kemampuan Kesuburan Tanah pada Beberapa Lahan Tebu di Kecamatan Japah Kabupaten Blora Siswanto, Dwi; Widjajani, Bakti Wisnu; Siswanto, Siswanto
JURNAL AGROTROPIKA Vol. 23 No. 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.8326

Abstract

Sugarcane commodity is one of the important commodities in Indonesia. The relationship with the advanced industry of sugarcane is also very close, about 20% in the form of liquid sugar produced from this plant. This study was led to analyze the status and classification of soil fertility capabilities on sugarcane fields in the Japah Area. This study used a survey method with sugarcane fields selected from 9 selected villages and soil sampling depths of 0-20 and 20-40. The fertility status in sugarcane fields in Japah District is included in the Very Low (SR) and Low (R) criteria with C-Organic limiting factors, Potassium reserves, P reserves and low Base Saturation. The fertility ability classification is (T1) Ngiyono K is low, acidic and P is low, (T2) Sumberjo availability K and P are low, acidic, (T3) Wotbakah P is low, (T4) Bogem availability K and P is low, (T5) Gaplokan K and P are low, (T6) Kalinanas K and P are low, (T7) Tlogowungu availability K and low P, (T8) Dologan K and low P, (T9) Ngapus K and low P.Keywords : status, fertility capability, sugarcane land
Co-Authors Ahaddiyah, Nur Aini Diyaurrachman, Diyaurrachman Dwi Siswanto Eko Murniyanto Eko Murniyanto Haq, Thariq Naufal Isbakhul Lail Krisna Ananta, Kevin M Ghufron Chakim MOCH ADITYAWARDANA Moch. Arifin Nugroho, Muhammad Vedo Prasetyo Penta Suryaminarsih Pertiwi, Dharmi Wimi Priyadarshini, Rossyda Purwadi Purwadi Purwadi Putri, Olivia Damayanti Riski, Aqilla Wulan Rizki, Fiorentina Cahaya S Siswanto Slamet Supriyadi Tri MUJOKO Wanti Mindari Wanti Mindari Wijaya, Kemal